HomeMy WebLinkAboutCC_2018_11_13_Amended AgendaPacket
CITY OF ATASCADERO
CITY COUNCIL
AGENDA
Tuesday, November 13, 2018
City Hall Council Chambers, 4th floor
6500 Palma Avenue, Atascadero, California
(Entrance on Lewis Ave.)
REGULAR SESSION – CALL TO ORDER: 6:00 P.M.
PLEDGE OF ALLEGIANCE: Council Member Bourbeau
ROLL CALL: Mayor O’Malley
Mayor Pro Tem Fonzi
Council Member Bourbeau
Council Member Moreno
Council Member Sturtevant
APPROVAL OF AGENDA: Roll Call
Recommendation: Council:
1. Approve this agenda; and
2. Waive the reading in full of all ordinances appearing on this agenda, and the
titles of the ordinances will be read aloud by the City Clerk at the first reading,
after the motion and before the City Council votes.
PRESENTATIONS:
1. Proclamation proclaiming November National Hospice Palliative Care Month
A. CONSENT CALENDAR: (All items on the consent calendar are considered to be
routine and non-controversial by City staff and will be approved by one motion if no
member of the Council or public wishes to comment or ask questions. If comment or
discussion is desired by anyone, the item will be removed from the consent calendar
and will be considered in the listed sequence with an opportunity for any member of
the public to address the Council concerning the item before action is taken.)
City Council Regular Session: 6:00 P.M.
Page 1 of 252
1. City Council Draft Action Minutes – October 23, 2018
Recommendation: Council approve the City Council Draft Action Minutes
of the October 23, 2018, City Council meeting. [City Clerk]
2. September 2018 Accounts Payable and Payroll
Fiscal Impact: $2,540,118.93
Recommendation: Council approve certified City accounts payable, payroll
and payroll vendor checks for September 2018. [Administrative Services]
3. September 2018 Investment Report
Fiscal Impact: None.
Recommendation: Council receive and file the City Treasurer’s report for
quarter ending September 2018. [Administrative Services]
4. Accept Parcel Map AT 17-0135 - 3355 Chico Road (FMP 18-0051, Erwin & Wingo)
Fiscal Impact: None.
Recommendations: Council:
1. Accept Parcel Map AT 17-0135.
2. Accept, on behalf of the public, the offer of dedication for a Public
Utility Easement as shown on Parcel Map AT 17-0135.
3. Authorize and direct the City Clerk to endorse the Council’s approval
on the Map. [Public Works]
5. Completion of Subdivision Improvements for Tract 2802 (Erica Court)
Fiscal Impact: None.
Recommendations: Council:
1. Accept and certify the satisfactory completion of subdivision
improvement work for Tract 2802.
2. Authorize the City Engineer to release and/or decrease subdivision
improvement security on behalf of the City Council.
3. Accept the Erica Court public sewer main extension constructed with
Tract 2802 into the City of Atascadero Wastewater Collection System.
[Public Works]
6. Chicago Grade Landfill Agreement
Fiscal Impact: None.
Recommendation: Council authorize the City Manager to execute a new
agreement with Chicago Grade Landfill, Inc., for exclusive depositing of
City waste collections into Chicago Grade Landfill. [Public Works]
UPDATES FROM THE CITY MANAGER: (The City Manager will give an oral report on
any current issues of concern to the City Council.)
COMMUNITY FORUM: (This portion of the meeting is reserved for persons wanting to
address the Council on any matter not on this agenda and over which the Council has
jurisdiction. Speakers are limited to three minutes. Please state your name for the record
before making your presentation. Comments made during Community Forum will not be a
subject of discussion. A maximum of 30 minutes will be allowed for Community Forum,
unless changed by the Council. Any members of the public who have questions or need
information may contact the City Clerk’s Office, between the hours of 8:30 a.m. and 5:00
p.m. at 470-3400, or cityclerk@atascadero.org.)
Page 2 of 252
B. PUBLIC HEARINGS: None.
C. MANAGEMENT REPORTS:
1. Approve Local Agency Management Plan for Onsite Wastewater
Treatment (Septic) Systems Standards
Fiscal Impact: Approving staff recommendations will result in an increase
of $15,000 in General Fund reserves toward the LAMP document
development for a total LAMP budget of $65,000.
Recommendations: Council:
1. Authorize staff to submit the final draft Local Agency Management Plan
to Regional Water Quality Control Board for approval.
2. Adopt Draft Resolution adopting the City of Atascadero Local Agency
Management Program (LAMP) as the new City standards for Onsite
Wastewater Treatment Systems effective the day after approval of the
LAMP by the Regional Water Quality Control Board.
3. Authorize the Administrative Services Director to appropriate an
additional $15,000 in General Fund reserves toward the LAMP
development budget to cover additional costs associated with LAMP
completion for a total budget of $65,000. [Public Works]
COUNCIL ANNOUNCEMENTS AND REPORTS: (On their own initiative, Council
Members may make a brief announcement or a brief report on their own activities.
Council Members may ask a question for clarification, make a referral to staff or take
action to have staff place a matter of business on a future agenda. The Council may
take action on items listed on the Agenda.)
D. COMMITTEE REPORTS: (The following represent standing committees.
Informative status reports will be given, as felt necessary):
Mayor O’Malley
1. City / Schools Committee
2. County Mayors Round Table
3. SLO Council of Governments (SLOCOG)
4. SLO Regional Transit Authority (RTA)
Mayor Pro Tem Fonzi
1. Air Pollution Control District
2. SLO Local Agency Formation Commission (LAFCo)
3. City of Atascadero Design Review Committee
4. Atascadero Basin Ground Water Sustainability Agency (GSA)
Council Member Bourbeau
1. City of Atascadero Design Review Committee
2. Homeless Services Oversight Council
3. City of Atascadero Finance Committee
4. SLO County Water Resources Advisory Committee (WRAC)
5. Integrated Waste Management Authority (IWMA)
Page 3 of 252
I, Amanda Muther, Deputy City Clerk of the City of Atascadero, declare under penalty of perjury that the foregoing agenda for the
November 13, 2018 Regular Session of the Atascadero City Council was posted on November 7, 2018 at the Atascadero City Hall, 6500
Palma Avenue, Atascadero, CA 93422 and was available for public review at that location.
Signed this 7th day of November 2018, at Atascadero, California.
Amanda Muther, Deputy City Clerk
City of Atascadero
Council Member Moreno
1. California Joint Powers Insurance Authority (CJPIA) Board
2. City of Atascadero Finance Committee (Chair)
3. Economic Vitality Corporation, Board of Directors (EVC)
Council Member Sturtevant
1. City / Schools Committee
2. League of California Cities – Council Liaison
E. INDIVIDUAL DETERMINATION AND / OR ACTION:
1. City Council
2. City Clerk
3. City Treasurer
4. City Attorney
5. City Manager
F. ADJOURN
Please note: Should anyone challenge any proposed development entitlement listed on this Agenda in court, that
person may be limited to raising those issues addressed at the public hearing described in this notice, or in written
correspondence delivered to the City Council at or prior to this public hearing. Correspondence submitted at this
public hearing will be distributed to the Council and available for review in the City Clerk's office.
Page 4 of 252
City of Atascadero
WELCOME TO THE ATASCADERO CITY COUNCIL MEETING
The City Council meets in regular session on the second and fourth Tuesday of each month at 6:00 p.m.
Council meetings will be held at the City Hall Council Chambers, 6500 Palma Avenue, Atascadero.
Matters are considered by the Council in the order of the printed Agenda. Regular Council meetings are
televised live, audio recorded and videotaped for future playback. Charter Communication customers
may view the meetings on Charter Cable Channel 20 or via the City’s website at www.atascadero.org.
Meetings are also broadcast on radio station KPRL AM 1230. Contact the City Clerk for more information
(470-3400).
Copies of the staff reports or other documentation relating to each item of business referred to on the
Agenda are on file in the office of the City Clerk and are available for public inspection during City Hall
business hours at the Front Counter of City Hall, 6500 Palma Avenue, Atascadero, and on our website,
www.atascadero.org. Contracts, Resolutions and Ordinances will be allocated a number once they are
approved by the City Council. The minutes of this meeting will reflect these numbers. All documents
submitted by the public during Council meetings that are either read into the record or referred to in their
statement will be noted in the minutes and available for review in the City Clerk's office .
In compliance with the Americans with Disabilities Act, if you need special assistance to participate in
a City meeting or other services offered by this City, please contact the City Manager’s Office or the
City Clerk’s Office, both at (805) 470-3400. Notification at least 48 hours prior to the meeting or time
when services are needed will assist the City staff in assuring that reasonable arrangements can be
made to provide accessibility to the meeting or service.
TO SPEAK ON SUBJECTS NOT LISTED ON THE AGENDA
Under Agenda item, “COMMUNITY FORUM”, the Mayor will call for anyone from the audience having
business with the Council to approach the lectern and be recognized.
1. Give your name for the record (not required)
2. State the nature of your business.
3. All comments are limited to 3 minutes.
4. All comments should be made to the Mayor and Council.
5. No person shall be permitted to make slanderous, profane or negative personal remarks
concerning any other individual, absent or present
This is the time items not on the Agenda may be brought to the Council’s attention. A maximum of 30
minutes will be allowed for Community Forum (unless changed by the Council). If you wish to use a
computer presentation to support your comments, you must notify the City Clerk's office at least 24 hours
prior to the meeting. Digital presentations must be brought to the meeting on a USB drive or CD. You
are required to submit to the City Clerk a printed copy of your presentation for the record. Please check
in with the City Clerk before the meeting begins to announce your presence and turn in the printed copy.
TO SPEAK ON AGENDA ITEMS (from Title 2, Chapter 1 of the Atascadero Municipal Code)
Members of the audience may speak on any item on the agenda. The Mayor will identify the subject,
staff will give their report, and the Council will ask questions of staff. The Mayor will announce when the
public comment period is open and will request anyone interested to address the Council regarding the
matter being considered to step up to the lectern. If you wish to speak for, against or comment in any
way:
1. You must approach the lectern and be recognized by the Mayor
2. Give your name (not required)
3. Make your statement
4. All comments should be made to the Mayor and Council
5. No person shall be permitted to make slanderous, profane or negative personal remarks
concerning any other individual, absent or present
6. All comments limited to 3 minutes
The Mayor will announce when the public comment period is closed, and thereafter, no further public
comments will be heard by the Council.
Page 5 of 252
ITEM NUMBER: A-1
DATE: 11/13/18
Atascadero City Council
October 23, 2018
Page 1 of 5
CITY OF ATASCADERO
CITY COUNCIL
DRAFT MINUTES
Tuesday, October 23, 2018
City Hall Council Chambers, 4th floor
6500 Palma Avenue, Atascadero, California
(Entrance on Lewis Ave.)
REGULAR SESSION – CALL TO ORDER: 6:00 P.M.
Mayor O’Malley called the meeting to order at 6:05 p.m. and Mayor Pro Tem Fonzi led
the Pledge of Allegiance.
ROLL CALL:
Present: Council Members Bourbeau, Moreno, Sturtevant, Mayor Pro Tem
Fonzi and Mayor O’Malley
Absent: None
Others Present: City Treasurer Gere Sibbach
Staff Present: Public Works Director Nick DeBar, Police Chief Jerel Haley,
Administrative Services Director Jeri Rangel, Community
Development Director Phil Dunsmore, Fire Chief Casey Bryson,
City Attorney Brian Pierik and Deputy City Clerk Amanda Muther
APPROVAL OF AGENDA:
MOTION: By Council Member Moreno and seconded by Council Member
Sturtevant to:
1. Approve this agenda; and,
2. Waive the reading in full of all ordinances appearing on this
agenda, and the titles of the ordinances will be read aloud
by the City Clerk at the first reading, after the motion and
before the City Council votes.
Motion passed 5:0 by a roll-call vote.
City Council Regular Session: 6:00 P.M.
Page 6 of 252
ITEM NUMBER: A-1
DATE: 11/13/18
Atascadero City Council
October 23, 2018
Page 2 of 5
PRESENTATIONS:
1. Employee Recognition
City Manager Rickard presented the following employees with Service Awards:
5 Years: Katie Mulder, Zookeeper
Diego Segovia, Police Officer
Ryan Sloan, Police Officer
10 Years: Christopher Hester, Police Officer
15 Years: Jason Carr, Police Lieutenant
20 Years: Jeff Wilshusen, Police Sergeant
Lori Brickey, Finance Technician
A. CONSENT CALENDAR: (All items on the consent calendar are considered to be
routine and non-controversial by City staff and will be approved by one motion if no
member of the Council or public wishes to comment or ask questions. If comment or
discussion is desired by anyone, the item will be removed from the consent calendar
and will be considered in the listed sequence with an opportunity for any member of
the public to address the Council concerning the item before action is taken.)
1. City Council Draft Action Minutes – October 9, 2018
Recommendation: Council approve the City Council Draft Action Minutes
of the October 9, 2018, City Council meeting. [City Clerk]
2. 2018-2019 Citywide Salary Schedule and Memorandums of Understanding
for Service Employees International Union Local 620, Atascadero
Professional Firefighters Local 3600, Mid-Management/Professional
Employees Association, and Resolution for Non-Represented
Professional and Management Workers and Confidential Employees
Fiscal Impact: Changes to the MOUs and Resolution will result in an
estimated $286,000 cost increase for 2018-2019 and an estimated
$505,000 - $540,000 annually for future years.
Recommendation: Council:
1. Approve the Memorandum of Understanding for Service Employees
International Union Local 620.
2. Approve the Memorandum of Understanding for Atascadero
Professional Firefighters Local 3600.
3. Approve the Memorandum of Understanding for, Mid -Management/
Professional Employees Association.
4. Adopt Draft Resolution for Non-Represented Professional and
Management Workers and Confidential Employees.
5. Approve the Salary Schedule for Fiscal Year 2018 -2019.
[City Manager]
MOTION: By Mayor Pro Tem Fonzi and seconded by Council Member
Sturtevant to approve the Consent Calendar. (#A-2: Contract Nos.
2018-013, 2018-014 & 2018-015) (#A2: Resolution No. 2018-063)
Motion passed 5:0 by a roll-call vote.
Page 7 of 252
ITEM NUMBER: A-1
DATE: 11/13/18
Atascadero City Council
October 23, 2018
Page 3 of 5
UPDATES FROM THE CITY MANAGER:
City Manager Rachelle Rickard gave an update on projects and issues within the City.
COMMUNITY FORUM:
The following citizens spoke during Community Forum: Susan Warren and Mark Russo
Mayor O’Malley closed the COMMUNITY FORUM period.
B. PUBLIC HEARINGS: None.
C. MANAGEMENT REPORTS:
1. Procurement for Joy Playground Equipment at Colony Park
Fiscal Impact: $536,709.54
Recommendation: Council:
1. Award a contract for $536,709.54 to PlayCore Wisconsin, Inc. (dba
GameTime) to furnish and install playground equipment and
rubberized surfacing for the Joy Playground project at Colony Park
(City Project No. C2016P01).
2. Authorize the City Manager to execute a contract for $565,061
$536,709.54 with PlayCore Wisconsin, Inc. (dba GameTime) to furnish
and install playground equipment and rubberized surfacing for the Joy
Playground project at Colony Park.
3. Authorize the Director of Public Works to file a Notice of Completion
with the County Recorder upon satisfactory completion of the project.
[Public Works]
Public Works Director Nick DeBar gave the staff report and answered questions from the
Council.
PUBLIC COMMENT:
The following citizens spoke on this item: Geoff Auslen
Mayor O’Malley closed the Public Comment period.
MOTION: By Mayor O’Malley and seconded by Council Member Sturtevant to:
1. Award a contract for $536,709.54 to PlayCore Wisconsin, Inc.
(dba GameTime) to furnish and install playground equipment
and rubberized surfacing for the Joy Playground project at
Colony Park (City Project No. C2016P01).
Page 8 of 252
ITEM NUMBER: A-1
DATE: 11/13/18
Atascadero City Council
October 23, 2018
Page 4 of 5
2. Authorize the City Manager to execute a contract for
$536,709.54 with PlayCore Wisconsin, Inc. (dba GameTime) to
furnish and install playground equipment and rubberized
surfacing for the Joy Playground project at Colony Park.
3. Authorize the Director of Public Works to file a Notice of
Completion with the County Recorder upon satisfactory
completion of the project. (Contract No. 2018-016)
Motion passed 5:0 by a roll-call vote.
2. Del Rio Road Commercial Area Specific Plan – Potential Land Uses
Fiscal Impact: None.
Recommendation: Council receive informational report on land use trends
and potential land uses for the Del Rio Specific Plan Area and provide
input on potential additional scenarios to be analyzed. [Community
Development]
Community Development Director Phil Dunsmore gave the staff report and answered questions
from the Council. City Manager Rickard, Public Works Director DeBar and City Attorney Pierik
also answered questions from the Council.
PUBLIC COMMENT:
The following citizens spoke on this item: Susan Funk, Mark Dariz and Geoff Auslen
Mayor O’Malley closed the Public Comment period.
Council received the informational report on the Del Rio Specific Plan Area.
COUNCIL ANNOUNCEMENTS AND REPORTS: None.
D. COMMITTEE REPORTS:
The following Council Members gave brief update reports on their committees since
their last Council meeting:
Mayor Pro Tem Fonzi
1. SLO Local Agency Formation Commission (LAFCo)
Council Member Bourbeau
1. Homeless Services Oversight Council
Council Member Moreno
1. Economic Vitality Corporation, Board of Directors (EVC)
E. INDIVIDUAL DETERMINATION AND / OR ACTION: None.
Page 9 of 252
ITEM NUMBER: A-1
DATE: 11/13/18
Atascadero City Council
October 23, 2018
Page 5 of 5
F. ADJOURN
Mayor O’Malley adjourned the Regular Meeting at 8:13 p.m.
MINUTES PREPARED BY:
______________________________________
Amanda Muther
Deputy City Clerk
APPROVED:
Page 10 of 252
ITEM NUMBER: A-2DATE: 11/13/18Page 11 of 252
Check
Number
Check
Date Vendor Description Amount
City of Atascadero
Disbursement Listing
For the Month of September 2018
157959 09/06/2018 ATASCADERO MID MGRS ORG UNION 80.00Payroll Vendor Payment
157960 09/06/2018 ATASCADERO POLICE OFFICERS 1,362.50Payroll Vendor Payment
157961 09/06/2018 ATASCADERO PROF. FIREFIGHTERS 993.60Payroll Vendor Payment
157962 09/06/2018 MASS MUTUAL WORKPLACE SOLUTION 9,365.50Payroll Vendor Payment
157963 09/06/2018 NATIONWIDE RETIREMENT SOLUTION 783.86Payroll Vendor Payment
157964 09/06/2018 NAVIA BENEFIT SOLUTIONS 1,237.31Payroll Vendor Payment
157965 09/06/2018 SEIU LOCAL 620 827.94Payroll Vendor Payment
157966 09/06/2018 VANTAGEPOINT TRNSFR AGT 106099 337.31Payroll Vendor Payment
157967 09/06/2018 VANTAGEPOINT TRNSFR AGT 304633 3,617.33Payroll Vendor Payment
3071 09/07/2018 STATE DISBURSEMENT UNIT 209.54Payroll Vendor Payment
3072 09/07/2018 HEALTHEQUITY, INC.10,721.70Payroll Vendor Payment
3073 09/07/2018 CALIF PUBLIC EMPLOYEES RETIREMENT SYSTEM 21,854.49Payroll Vendor Payment
3074 09/07/2018 CALIF PUBLIC EMPLOYEES RETIREMENT SYSTEM 35,380.51Payroll Vendor Payment
3075 09/07/2018 CALIF PUBLIC EMPLOYEES RETIREMENT SYSTEM 744.43Payroll Vendor Payment
3076 09/07/2018 CALIF PUBLIC EMPLOYEES RETIREMENT SYSTEM 2,006.61Payroll Vendor Payment
3077 09/07/2018 CALIF PUBLIC EMPLOYEES RETIREMENT SYSTEM 2,533.82Payroll Vendor Payment
3078 09/07/2018 CALIF PUBLIC EMPLOYEES RETIREMENT SYSTEM 4,107.19Payroll Vendor Payment
3079 09/07/2018 CALIF PUBLIC EMPLOYEES RETIREMENT SYSTEM 5,271.52Payroll Vendor Payment
3080 09/07/2018 CALIF PUBLIC EMPLOYEES RETIREMENT SYSTEM 9,777.05Payroll Vendor Payment
157968 09/10/2018 WEX BANK - 76 UNIVERSL 11,733.16Accounts Payable Check
157969 09/10/2018 WEX BANK - WEX FLEET UNIVERSAL 7,724.89Accounts Payable Check
3081 09/11/2018 RABOBANK, N.A.55,697.24Payroll Vendor Payment
3082 09/11/2018 EMPLOYMENT DEV DEPARTMENT 17,164.85Payroll Vendor Payment
3083 09/11/2018 EMPLOYMENT DEV. DEPARTMENT 2,168.77Payroll Vendor Payment
3084 09/14/2018 BANK OF NEW YORK MELLON 612,292.38Accounts Payable Check
157970 09/14/2018 29TONIGHT, CO.327.79Accounts Payable Check
157971 09/14/2018 4LEAF,INC.7,289.35Accounts Payable Check
157972 09/14/2018 A & J REFRIGERATION 233.00Accounts Payable Check
157973 09/14/2018 ACCESS PUBLISHING 400.00Accounts Payable Check
157974 09/14/2018 ALLSTAR FIRE EQUIPMENT, INC.507.77Accounts Payable Check
157975 09/14/2018 AMERICAN WEST TIRE & AUTO INC 214.85Accounts Payable Check
157976 09/14/2018 AT&T 290.53Accounts Payable Check
157977 09/14/2018 AT&T 33.17Accounts Payable Check
157978 09/14/2018 ATASCADERO PICKLEBALL CLUB 178.80Accounts Payable Check
157979 09/14/2018 AURORA WORLD, INC.365.90Accounts Payable Check
157980 09/14/2018 KEITH R. BERGHER 450.00Accounts Payable Check
157981 09/14/2018 BIG RED MARKETING, INC.3,500.00Accounts Payable Check
ITEM NUMBER: A-2
DATE: 11/13/18
ATTACHMENT: 1
Page 12 of 252
Check
Number
Check
Date Vendor Description Amount
City of Atascadero
Disbursement Listing
For the Month of September 2018
157982 09/14/2018 JUSTIN BLACK 44.56Accounts Payable Check
157983 09/14/2018 BREZDEN PEST CONTROL, INC.99.00Accounts Payable Check
157984 09/14/2018 SHIRLEY R. BRUTON 559.20Accounts Payable Check
157985 09/14/2018 CA PARKS & RECREATION 775.00Accounts Payable Check
157986 09/14/2018 CALLBACK STAFFING SOLUTION,LLC 189.46Accounts Payable Check
157987 09/14/2018 JASON F. CARR 281.00Accounts Payable Check
157988 09/14/2018 CCI OFFICE TECHNOLOGIES 349.29Accounts Payable Check
157989 09/14/2018 CDCE, INC.31,520.18Accounts Payable Check
157990 09/14/2018 CENTRAL COAST CAFE 130.00Accounts Payable Check
157991 09/14/2018 CHARTER COMMUNICATIONS 99.98Accounts Payable Check
157992 09/14/2018 KATHLEEN J. CINOWALT 199.50Accounts Payable Check
157993 09/14/2018 JEREMY L. CLAY 46.00Accounts Payable Check
157994 09/14/2018 CLEVER CONCEPTS, INC.60.00Accounts Payable Check
157995 09/14/2018 CO OF SAN LUIS OBISPO SART PRG 563.00Accounts Payable Check
157996 09/14/2018 COAST LINE DISTRIBUTING 233.58Accounts Payable Check
157997 09/14/2018 CRYSTAL SPRINGS WATER 73.00Accounts Payable Check
157998 09/14/2018 CULLIGAN/CENTRAL COAST WTR TRT 70.00Accounts Payable Check
157999 09/14/2018 NICHOLAS DEBAR 300.00Accounts Payable Check
158000 09/14/2018 DESTINATION TRAVEL NETWORK 190.00Accounts Payable Check
158001 09/14/2018 DMV RENEWAL 128.00Accounts Payable Check
158002 09/14/2018 DOC BURNSTEIN'S ICE CREAM LAB 1,864.08Accounts Payable Check
158003 09/14/2018 DRIVE CUSTOMS 250.00Accounts Payable Check
158004 09/14/2018 PHILIP DUNSMORE 300.00Accounts Payable Check
158005 09/14/2018 EARTH SYSTEMS PACIFIC 3,587.00Accounts Payable Check
158006 09/14/2018 ED'S FLYMEAT LLC 46.20Accounts Payable Check
158007 09/14/2018 JENNIFER S. EICKEMEYER 28.80Accounts Payable Check
158008 09/14/2018 FERRAVANTI GRADING & PAVING 95,503.74Accounts Payable Check
158009 09/14/2018 FIESTA MAHAR MANUFACTURNG CORP 323.70Accounts Payable Check
158010 09/14/2018 FIRST AMERICAN TITLE 18,000.00Accounts Payable Check
158011 09/14/2018 FOOD FOR LESS 89.76Accounts Payable Check
158012 09/14/2018 GAS COMPANY 135.16Accounts Payable Check
158013 09/14/2018 KELLY GLEASON 22.89Accounts Payable Check
158014 09/14/2018 GLOBAL EYEWEAR 216.94Accounts Payable Check
158015 09/14/2018 GUEST HOUSE GRILL, LLC 150.00Accounts Payable Check
158016 09/14/2018 BRADLEY A. HACKLEMAN 282.00Accounts Payable Check
158017 09/14/2018 HAMNER, JEWELL & ASSOCIATES 516.82Accounts Payable Check
158018 09/14/2018 HOME DEPOT CREDIT SERVICES 882.63Accounts Payable Check
158019 09/14/2018 INGRAM & GREENE, INC.115.32Accounts Payable Check
158020 09/14/2018 EVELYN R. INGRAM 420.48Accounts Payable Check
158021 09/14/2018 IRON MOUNTAIN RECORDS MGMNT 89.27Accounts Payable Check
ITEM NUMBER: A-2
DATE: 11/13/18
ATTACHMENT: 1
Page 13 of 252
Check
Number
Check
Date Vendor Description Amount
City of Atascadero
Disbursement Listing
For the Month of September 2018
158022 09/14/2018 BRITTNEY L. JONES 105.00Accounts Payable Check
158023 09/14/2018 K & M INTERNATIONAL 485.35Accounts Payable Check
158024 09/14/2018 NORMAN M. KATZ, PSY.D.450.00Accounts Payable Check
158025 09/14/2018 KNECHT'S PLUMBING & HEATING 8,902.50Accounts Payable Check
158026 09/14/2018 KTU+A 7,375.00Accounts Payable Check
158027 09/14/2018 LANTERN PRESS 310.53Accounts Payable Check
158028 09/14/2018 THOMAS LITTLE 921.82Accounts Payable Check
158029 09/14/2018 LOOMIS REFRIGERATION, INC.2,516.16Accounts Payable Check
158030 09/14/2018 CRAIG C. LOWRIE 100.00Accounts Payable Check
158031 09/14/2018 MARSTON'S 101 66.80Accounts Payable Check
158032 09/14/2018 SAMUEL HENRY MCMILLAN, JR.50.00Accounts Payable Check
158033 09/14/2018 SAMUEL H. MCMILLAN, SR.50.00Accounts Payable Check
158034 09/14/2018 MEDPOST URGENT CARE-ATASCADERO 120.00Accounts Payable Check
158035 09/14/2018 MID-COAST GEOTECHNICAL, INC.190.00Accounts Payable Check
158036 09/14/2018 MID-COAST MOWER & SAW, INC.17.00Accounts Payable Check
158037 09/14/2018 MINER'S ACE HARDWARE 74.05Accounts Payable Check
158038 09/14/2018 MISSION UNIFORM SERVICE 165.00Accounts Payable Check
158039 09/14/2018 RAYMOND ROBERT MOLLE 281.00Accounts Payable Check
158040 09/14/2018 MORGAN R. MONROE 450.00Accounts Payable Check
158041 09/14/2018 MV TRANSPORTATION, INC.20,943.87Accounts Payable Check
158042 09/14/2018 NASSAU-SOSNICK DISTRIBUTION CO 164.15Accounts Payable Check
158043 09/14/2018 OASIS EQUIPMENT RENTAL 884.00Accounts Payable Check
158044 09/14/2018 OFFICE DEPOT INC.691.97Accounts Payable Check
158045 09/14/2018 O'REILLY AUTOMOTIVE, INC.43.60Accounts Payable Check
158046 09/14/2018 PACIFIC GAS AND ELECTRIC 36,934.64Accounts Payable Check
158047 09/14/2018 PASO ROBLES GLASS 11,340.00Accounts Payable Check
158048 09/14/2018 ROBIN K. PENDLEY 46.00Accounts Payable Check
158049 09/14/2018 PERRY'S ELECTRIC MOTORS & CTRL 3,740.73Accounts Payable Check
158050 09/14/2018 PRO TOW 80.00Accounts Payable Check
158051 09/14/2018 QUINCY ENGINEERING, INC.12,798.89Accounts Payable Check
158052 09/14/2018 JERI RANGEL 300.00Accounts Payable Check
158053 09/14/2018 RICK ENGINEERING COMPANY 437.50Accounts Payable Check
158054 09/14/2018 RACHELLE RICKARD 543.00Accounts Payable Check
158055 09/14/2018 MICHELLE R. ROGERS 278.60Accounts Payable Check
158056 09/14/2018 SAFETY DRIVERS ED., LLC.27.30Accounts Payable Check
158057 09/14/2018 GERE SIBBACH 250.00Accounts Payable Check
158058 09/14/2018 SLO COUNTY SHERIFF'S OFFICE 212.00Accounts Payable Check
158059 09/14/2018 SLOCOG 5,516.00Accounts Payable Check
158060 09/14/2018 SMART AND FINAL 74.88Accounts Payable Check
158061 09/14/2018 SOUTH COAST EMERGENCY VEH SVC 2,370.27Accounts Payable Check
ITEM NUMBER: A-2
DATE: 11/13/18
ATTACHMENT: 1
Page 14 of 252
Check
Number
Check
Date Vendor Description Amount
City of Atascadero
Disbursement Listing
For the Month of September 2018
158062 09/14/2018 SOUZA CONSTRUCTION, INC.208,297.19Accounts Payable Check
158063 09/14/2018 SPEAKWRITE, LLC.1,064.23Accounts Payable Check
158064 09/14/2018 STANLEY CONVERGENT SECURITY 392.64Accounts Payable Check
158065 09/14/2018 STAPLES CREDIT PLAN 347.52Accounts Payable Check
158066 09/14/2018 STONEAGE ARTS, INC.312.09Accounts Payable Check
158067 09/14/2018 SWANK MOTION PICTURES, INC.770.00Accounts Payable Check
158068 09/14/2018 THRIVE TRAINING CENTER 264.60Accounts Payable Check
158074 09/14/2018 U.S. BANK 22,432.17Accounts Payable Check
158075 09/14/2018 ULTREX BUSINESS PRODUCTS 64.14Accounts Payable Check
158076 09/14/2018 ULTREX LEASING 260.76Accounts Payable Check
158077 09/14/2018 IWINA M. VAN BEEK 138.00Accounts Payable Check
158078 09/14/2018 THOMAS F. VELASQUEZ 261.00Accounts Payable Check
158079 09/14/2018 VERDIN 13,957.83Accounts Payable Check
158080 09/14/2018 VERIZON WIRELESS 3,671.26Accounts Payable Check
158081 09/14/2018 VINO VICE, INC.1,612.50Accounts Payable Check
158082 09/14/2018 WEST COAST AUTO & TOWING, INC.2,215.34Accounts Payable Check
158083 09/14/2018 BRIAN WESTERMAN 1,034.63Accounts Payable Check
158084 09/14/2018 WESTERN JANITOR SUPPLY 216.20Accounts Payable Check
158085 09/14/2018 WISHPETS CO.160.12Accounts Payable Check
158086 09/14/2018 KAREN B. WYKE 751.20Accounts Payable Check
158087 09/14/2018 ZOOM IMAGING SOLUTIONS, INC.899.50Accounts Payable Check
158088 09/14/2018 DEPARTMENT OF FORESTRY & FIRE 913.60Accounts Payable Check
158089 09/14/2018 ALEX GENTILLY 350.00Accounts Payable Check
158090 09/14/2018 ZACHARIAH JACKSON 255.00Accounts Payable Check
158091 09/14/2018 COLETTE LAYTON 1,600.00Accounts Payable Check
158092 09/14/2018 JACKSON LIGHT 350.00Accounts Payable Check
158093 09/14/2018 ANDREW LUERA 255.00Accounts Payable Check
158094 09/14/2018 TOM PETERSON 412.00Accounts Payable Check
158095 09/14/2018 REVENUE & COST SPECIALISTS LLC 7,000.00Accounts Payable Check
158096 09/14/2018 BRANDON ROBERTS 255.00Accounts Payable Check
158097 09/14/2018 CHRISTOPHER R. ROBINSON 255.00Accounts Payable Check
158098 09/14/2018 SLO COUNTY SHERIFF'S OFFICE 106.00Accounts Payable Check
158099 09/14/2018 THOMAS F. VELASQUEZ 46.00Accounts Payable Check
3091 09/20/2018 CALIF PUBLIC EMPLOYEES RETIREMENT SYSTEM 2,573.94Payroll Vendor Payment
158100 09/20/2018 ATASCADERO MID MGRS ORG UNION 80.00Payroll Vendor Payment
158101 09/20/2018 ATASCADERO POLICE OFFICERS 1,238.75Payroll Vendor Payment
158102 09/20/2018 ATASCADERO PROF. FIREFIGHTERS 993.60Payroll Vendor Payment
158103 09/20/2018 MASS MUTUAL WORKPLACE SOLUTION 8,315.50Payroll Vendor Payment
158104 09/20/2018 NATIONWIDE RETIREMENT SOLUTION 1,184.23Payroll Vendor Payment
158105 09/20/2018 NAVIA BENEFIT SOLUTIONS 1,076.27Payroll Vendor Payment
ITEM NUMBER: A-2
DATE: 11/13/18
ATTACHMENT: 1
Page 15 of 252
Check
Number
Check
Date Vendor Description Amount
City of Atascadero
Disbursement Listing
For the Month of September 2018
158106 09/20/2018 VOID 0.00Payroll Vendor Payment
158107 09/20/2018 SEIU LOCAL 620 834.32Payroll Vendor Payment
158108 09/20/2018 VANTAGEPOINT TRNSFR AGT 106099 337.31Payroll Vendor Payment
158109 09/20/2018 VANTAGEPOINT TRNSFR AGT 304633 3,759.09Payroll Vendor Payment
3085 09/21/2018 STATE DISBURSEMENT UNIT 335.95Payroll Vendor Payment
3086 09/21/2018 HEALTHEQUITY, INC.6,896.70Payroll Vendor Payment
3087 09/21/2018 CALIF PUBLIC EMPLOYEES RETIREMENT SYSTEM 22,081.44Payroll Vendor Payment
3088 09/21/2018 CALIF PUBLIC EMPLOYEES RETIREMENT SYSTEM 33,802.04Payroll Vendor Payment
3089 09/21/2018 CALIF PUBLIC EMPLOYEES RETIREMENT SYSTEM 731.39Payroll Vendor Payment
3090 09/21/2018 CALIF PUBLIC EMPLOYEES RETIREMENT SYSTEM 1,076.58Payroll Vendor Payment
3092 09/21/2018 CALIF PUBLIC EMPLOYEES RETIREMENT SYSTEM 3,931.04Payroll Vendor Payment
3093 09/21/2018 CALIF PUBLIC EMPLOYEES RETIREMENT SYSTEM 5,470.71Payroll Vendor Payment
3094 09/21/2018 CALIF PUBLIC EMPLOYEES RETIREMENT SYSTEM 9,951.86Payroll Vendor Payment
3095 09/25/2018 RABOBANK, N.A.50,410.88Payroll Vendor Payment
3096 09/25/2018 EMPLOYMENT DEV DEPARTMENT 14,815.15Payroll Vendor Payment
3097 09/25/2018 EMPLOYMENT DEV. DEPARTMENT 2,123.04Payroll Vendor Payment
158110 09/27/2018 ANTHEM BLUE CROSS HEALTH 159,227.61Payroll Vendor Payment
158111 09/27/2018 LINCOLN NATIONAL LIFE INS CO 1,591.95Payroll Vendor Payment
158112 09/27/2018 MEDICAL EYE SERVICES 1,725.46Payroll Vendor Payment
158113 09/27/2018 PREFERRED BENEFITS INSURANCE 8,893.10Payroll Vendor Payment
158114 09/28/2018 ATASCADERO PROF. FIREFIGHTERS 1,439.76Accounts Payable Check
158115 09/28/2018 CITY OF ATASCADERO 1,844.32Accounts Payable Check
158116 09/28/2018 CITY OF ATASCADERO 280.14Accounts Payable Check
158117 09/28/2018 DIVERSIFIED PROJECT SERVICES 2,106.25Accounts Payable Check
158118 09/28/2018 FGL ENVIRONMENTAL 179.00Accounts Payable Check
158119 09/28/2018 JOANN HEAD LAND SURVEYING 1,417.50Accounts Payable Check
158120 09/28/2018 MEDPOST URGENT CARE-PASO ROBLE 1,345.00Accounts Payable Check
158121 09/28/2018 MONSOON CONSULTANTS 3,797.50Accounts Payable Check
158122 09/28/2018 VOID 0.00Accounts Payable Check
158123 09/28/2018 PAUL JEFFREY ZEHNER 1,200.00Accounts Payable Check
158124 09/28/2018 A & J REFRIGERATION 3,123.63Accounts Payable Check
158125 09/28/2018 A & T ARBORISTS & VEGETATION 3,600.00Accounts Payable Check
158126 09/28/2018 MATTHEW R. AANERUD 40.00Accounts Payable Check
158127 09/28/2018 AGM CALIFORNIA, INC.2,031.00Accounts Payable Check
158128 09/28/2018 AGP VIDEO, INC.1,962.50Accounts Payable Check
158129 09/28/2018 AIRGAS USA, LLC 165.62Accounts Payable Check
158130 09/28/2018 ALLIANT INSURANCE SERVICES INC 173.00Accounts Payable Check
158131 09/28/2018 AMERICAN MARBORG 676.52Accounts Payable Check
ITEM NUMBER: A-2
DATE: 11/13/18
ATTACHMENT: 1
Page 16 of 252
Check
Number
Check
Date Vendor Description Amount
City of Atascadero
Disbursement Listing
For the Month of September 2018
158132 09/28/2018 AMERICAN WEST TIRE & AUTO INC 1,424.63Accounts Payable Check
158133 09/28/2018 ANTECH DIAGNOSTICS 173.85Accounts Payable Check
158134 09/28/2018 ASSOCIATED TRAFFIC SAFETY 1,128.68Accounts Payable Check
158136 09/28/2018 AT&T 974.38Accounts Payable Check
158137 09/28/2018 AT&T 886.93Accounts Payable Check
158138 09/28/2018 ATASCADERO HAY & FEED 2,205.44Accounts Payable Check
158139 09/28/2018 ATASCADERO NEWS 3,563.80Accounts Payable Check
158140 09/28/2018 AURORA WORLD, INC.765.20Accounts Payable Check
158141 09/28/2018 AXON ENTERPRISE, INC.975.00Accounts Payable Check
158142 09/28/2018 BANK OF NEW YORK MELLON 2,025.00Accounts Payable Check
158143 09/28/2018 BASSETT'S CRICKET RANCH,INC.418.40Accounts Payable Check
158144 09/28/2018 BELL'S PLUMBING REPAIR, INC.313.00Accounts Payable Check
158145 09/28/2018 BENJAMIN FRANKLIN PLUMBING 414.00Accounts Payable Check
158146 09/28/2018 BERRY MAN, INC.865.65Accounts Payable Check
158147 09/28/2018 TOM BIRKENFELD 204.00Accounts Payable Check
158148 09/28/2018 BURKE,WILLIAMS, & SORENSON LLP 14,695.03Accounts Payable Check
158149 09/28/2018 CAL-COAST REFRIGERATION, INC 987.66Accounts Payable Check
158150 09/28/2018 CALPORTLAND CONSTRUCTION 132.33Accounts Payable Check
158151 09/28/2018 CARQUEST OF ATASCADERO 37.94Accounts Payable Check
158152 09/28/2018 JASON F. CARR 20.00Accounts Payable Check
158153 09/28/2018 CDCE, INC.237.50Accounts Payable Check
158154 09/28/2018 CED CONSOLIDATED ELECTRICAL 1,643.19Accounts Payable Check
158155 09/28/2018 CENTRAL VALLEY TOXICOLOGY,INC.395.00Accounts Payable Check
158156 09/28/2018 CHARTER COMMUNICATIONS 4,171.01Accounts Payable Check
158157 09/28/2018 COAST ELECTRONICS 3,123.67Accounts Payable Check
158158 09/28/2018 COAST LINE DISTRIBUTING 544.29Accounts Payable Check
158159 09/28/2018 COASTAL COPY, INC.452.56Accounts Payable Check
158160 09/28/2018 COASTLINE EQUIPMENT 444.97Accounts Payable Check
158161 09/28/2018 SETH COLEBROOK 15.00Accounts Payable Check
158162 09/28/2018 NICHOLAS E. COUGHLIN 5.00Accounts Payable Check
158163 09/28/2018 CRYSTAL SPRINGS WATER 345.49Accounts Payable Check
158164 09/28/2018 RONALD R. DALZELL, D.V.M.103.00Accounts Payable Check
158165 09/28/2018 CALEB M. DAVIS 20.00Accounts Payable Check
158166 09/28/2018 DEPARTMENT OF JUSTICE 939.00Accounts Payable Check
158167 09/28/2018 DEPENDABLE FIRE PROTECTION 274.57Accounts Payable Check
158168 09/28/2018 DOCUTEAM 138.96Accounts Payable Check
158169 09/28/2018 ASHLEY DONOVAN 107.73Accounts Payable Check
158170 09/28/2018 MARIBETH DONOVAN 5.00Accounts Payable Check
158171 09/28/2018 ED'S FLYMEAT LLC 46.20Accounts Payable Check
158172 09/28/2018 EL CAMINO BUILDING SUPPLY 30.12Accounts Payable Check
ITEM NUMBER: A-2
DATE: 11/13/18
ATTACHMENT: 1
Page 17 of 252
Check
Number
Check
Date Vendor Description Amount
City of Atascadero
Disbursement Listing
For the Month of September 2018
158173 09/28/2018 EL CAMINO VETERINARY HOSP 67.00Accounts Payable Check
158174 09/28/2018 JULIE R. EMPEY 66.00Accounts Payable Check
158175 09/28/2018 ESCUELA DEL RIO 646.00Accounts Payable Check
158176 09/28/2018 FARM SUPPLY COMPANY 182.81Accounts Payable Check
158177 09/28/2018 FAST TRAX RECORDING STUDIO 1,167.75Accounts Payable Check
158178 09/28/2018 FENCE FACTORY ATASCADERO 10.51Accounts Payable Check
158179 09/28/2018 FERRELL'S AUTO REPAIR 41.70Accounts Payable Check
158180 09/28/2018 FGL ENVIRONMENTAL 420.00Accounts Payable Check
158181 09/28/2018 FIESTA MAHAR MANUFACTURNG CORP 344.25Accounts Payable Check
158182 09/28/2018 FOOD FOR LESS 105.18Accounts Payable Check
158183 09/28/2018 GAS COMPANY 383.81Accounts Payable Check
158184 09/28/2018 GLENN'S REPAIR & RENTAL, INC.34.12Accounts Payable Check
158185 09/28/2018 CHRISTOPHER HALL 120.00Accounts Payable Check
158186 09/28/2018 HAMNER, JEWELL & ASSOCIATES 88.94Accounts Payable Check
158187 09/28/2018 HANLEY AND FLEISHMAN, LLP 3,977.50Accounts Payable Check
158188 09/28/2018 HARRIS STAGE LINES, LLC 500.00Accounts Payable Check
158189 09/28/2018 HART IMPRESSIONS PRINTING 358.89Accounts Payable Check
158190 09/28/2018 ANDREW HAWKINS 102.00Accounts Payable Check
158191 09/28/2018 JK2 APPAREL 308.89Accounts Payable Check
158192 09/28/2018 JK'S UNLIMITED 2,691.85Accounts Payable Check
158193 09/28/2018 JOANN HEAD LAND SURVEYING 2,881.00Accounts Payable Check
158194 09/28/2018 JON JONES 357.00Accounts Payable Check
158195 09/28/2018 K & M INTERNATIONAL 1,909.42Accounts Payable Check
158196 09/28/2018 KNECHT'S PLUMBING & HEATING 3,535.40Accounts Payable Check
158197 09/28/2018 WADE S. KNOWLES 77.00Accounts Payable Check
158198 09/28/2018 KPRL 1230 AM 1,210.00Accounts Payable Check
158199 09/28/2018 KSBY COMMUNICATIONS, LLC 1,140.00Accounts Payable Check
158200 09/28/2018 COLETTE LAYTON 999.00Accounts Payable Check
158201 09/28/2018 LEHIGH HANSON 676.93Accounts Payable Check
158202 09/28/2018 LIFE ASSIST, INC.600.50Accounts Payable Check
158203 09/28/2018 MADRONE LANDSCAPES, INC.8,111.00Accounts Payable Check
158204 09/28/2018 NICHOLAS MATTSON 58.09Accounts Payable Check
158205 09/28/2018 SAMUEL HENRY MCMILLAN, JR.125.00Accounts Payable Check
158206 09/28/2018 SAMUEL H. MCMILLAN, SR.50.00Accounts Payable Check
158207 09/28/2018 MICHAEL'S WINDOW CLEANING 350.00Accounts Payable Check
158208 09/28/2018 MINER'S ACE HARDWARE 763.45Accounts Payable Check
158209 09/28/2018 MISSION UNIFORM SERVICE 456.91Accounts Payable Check
158210 09/28/2018 RAYMOND ROBERT MOLLE 20.00Accounts Payable Check
158211 09/28/2018 MONSOON CONSULTANTS 1,001.25Accounts Payable Check
158212 09/28/2018 MOSS, LEVY, & HARTZHEIM LLP 7,500.00Accounts Payable Check
ITEM NUMBER: A-2
DATE: 11/13/18
ATTACHMENT: 1
Page 18 of 252
Check
Number
Check
Date Vendor Description Amount
City of Atascadero
Disbursement Listing
For the Month of September 2018
158213 09/28/2018 MOTOROLA 173.06Accounts Payable Check
158214 09/28/2018 AMANDA MUTHER 15.00Accounts Payable Check
158215 09/28/2018 MWI ANIMAL HEALTH 93.99Accounts Payable Check
158216 09/28/2018 NCI AFFILIATES, INC 240.00Accounts Payable Check
158217 09/28/2018 NEOPOST USA, INC.692.55Accounts Payable Check
158218 09/28/2018 OFFICE DEPOT INC.210.67Accounts Payable Check
158219 09/28/2018 PACIFIC GAS AND ELECTRIC 8,260.44Accounts Payable Check
158220 09/28/2018 ROBIN K. PENDLEY 92.00Accounts Payable Check
158221 09/28/2018 PERRY'S PARCEL & GIFT 20.58Accounts Payable Check
158222 09/28/2018 PETERSON U-CART 127.15Accounts Payable Check
158223 09/28/2018 PHILADELPHIA ZOO 1,017.25Accounts Payable Check
158224 09/28/2018 PHILLIPS INTERNATIONAL, INC.1,056.96Accounts Payable Check
158225 09/28/2018 PLACEWORKS, INC.7,148.04Accounts Payable Check
158226 09/28/2018 PRAXAIR DISTRIBUTION, INC.49.60Accounts Payable Check
158227 09/28/2018 JENNIFER PRINCE 115.00Accounts Payable Check
158228 09/28/2018 PROCARE JANITORIAL SUPPLY,INC.1,004.28Accounts Payable Check
158229 09/28/2018 PROGRESSIVE SOLUTIONS, INC.3,172.90Accounts Payable Check
158230 09/28/2018 QUALITY CODE PUBLISHING 1,212.65Accounts Payable Check
158231 09/28/2018 QUINN RENTAL SERVICES 2,331.69Accounts Payable Check
158232 09/28/2018 RANGE MASTER 86.57Accounts Payable Check
158233 09/28/2018 RECOGNITION WORKS 43.10Accounts Payable Check
158234 09/28/2018 REPUBLIC ELEVATOR COMPANY 1,904.00Accounts Payable Check
158235 09/28/2018 SCOTT O'BRIEN FIRE & SAFETY CO 266.72Accounts Payable Check
158236 09/28/2018 SHARPLINE SOLUTIONS, INC.1,333.79Accounts Payable Check
158237 09/28/2018 THE SHERWIN-WILLIAMS COMPANY 154.78Accounts Payable Check
158238 09/28/2018 SHORE-TEK, INC.436.03Accounts Payable Check
158239 09/28/2018 JOHN C. SIEMENS 494.20Accounts Payable Check
158240 09/28/2018 SITEONE LANDSCAPE SUPPLY, LLC 150.22Accounts Payable Check
158241 09/28/2018 DAVID L. SMAW 75.00Accounts Payable Check
158242 09/28/2018 SOFTWAREONE, INC.28,765.38Accounts Payable Check
158243 09/28/2018 SPECTRUM REACH 1,000.00Accounts Payable Check
158244 09/28/2018 STANLEY CONVERGENT SECURITY 761.86Accounts Payable Check
158245 09/28/2018 STATEWIDE TRAFFIC SAFETY&SIGNS 533.71Accounts Payable Check
158246 09/28/2018 JAMIE STRIEGEL 653.91Accounts Payable Check
158247 09/28/2018 SUNLIGHT JANITORIAL, INC.2,661.00Accounts Payable Check
158248 09/28/2018 TRIBUNE 1,719.04Accounts Payable Check
158249 09/28/2018 UNITED STAFFING ASSC., INC.2,614.57Accounts Payable Check
158250 09/28/2018 IWINA M. VAN BEEK 230.00Accounts Payable Check
158251 09/28/2018 THOMAS F. VELASQUEZ 100.00Accounts Payable Check
158252 09/28/2018 VERIZON WIRELESS 1,260.72Accounts Payable Check
ITEM NUMBER: A-2
DATE: 11/13/18
ATTACHMENT: 1
Page 19 of 252
Check
Number
Check
Date Vendor Description Amount
City of Atascadero
Disbursement Listing
For the Month of September 2018
158253 09/28/2018 VINO VICE, INC.180.00Accounts Payable Check
158254 09/28/2018 W.A. DAVIDSON OF JAX, INC.900.00Accounts Payable Check
158255 09/28/2018 WARM FUZZY TOYS 342.20Accounts Payable Check
158256 09/28/2018 WEST COAST AUTO & TOWING, INC.70.97Accounts Payable Check
158257 09/28/2018 WHITLOCK & WEINBERGER TRANS.1,052.50Accounts Payable Check
158258 09/28/2018 WILKINS ACTION GRAPHICS 19.70Accounts Payable Check
158259 09/28/2018 TORINA WILSON 31.75Accounts Payable Check
158260 09/28/2018 PAUL JEFFREY ZEHNER 800.00Accounts Payable Check
158261 09/28/2018 ZOETIS US, LLC 250.66Accounts Payable Check
158262 09/28/2018 ZOO MED LABORATORIES, INC.679.92Accounts Payable Check
$1,915,886.42
ITEM NUMBER: A-2
DATE: 11/13/18
ATTACHMENT: 1
Page 20 of 252
ITEM NUMBER: A-3DATE: 11/13/18Page 21 of 252
ITEM NUMBER: A-3DATE: 11/13/18Page 22 of 252
ITEM NUMBER: A-3DATE: 11/13/18Page 23 of 252
ITEM NUMBER: A-3
DATE: 11/13/18
Page 24 of 252
ITEM NUMBER: A-3
DATE: 11/13/18
Page 25 of 252
ITEM NUMBER: A-3
DATE: 11/13/18
Page 26 of 252
ITEM NUMBER: A-3
DATE: 11/13/18
Page 27 of 252
ITEM NUMBER: A-3
DATE: 11/13/18
Page 28 of 252
ITEM NUMBER: A-3
DATE: 11/13/18
Page 29 of 252
ITEM NUMBER: A-3DATE: 11/13/18Page 30 of 252
ITEM NUMBER: A-3DATE: 11/13/18Page 31 of 252
ITEM NUMBER: A-3DATE: 11/13/18Page 32 of 252
City of Atascadero
Investment Yield vs. 2-Year Treasury Yield
For the Quarter Ended September 30, 2018
City Yield
2-Yr
Treasury
Weighted
Portfolio
Yield
September 2016 1.26%0.63%
December 2016 1.26%0.80%
March 2017 1.32%0.88%
June 2017 1.41%0.99%
September 2017 1.54%0.97%
December 2017 1.61%1.14%
March 2018 1.72%1.33%
June 2018 1.88%1.64%
September 2018 2.00%1.66%
0.00%
0.50%
1.00%
1.50%
2.00%
2.50%
City Yield 2-Yr Treasury Weighted Portfolio Yield
Page 13 of 13
ITEM NUMBER: A-4
DATE: 11/13/18
Atascadero City Council
Staff Report – Public Works Department
Accept Parcel Map AT 17-0135
3355 Chico Road (FMP 18-0051, Erwin & Wingo)
RECOMMENDATIONS:
Council:
1. Accept Parcel Map AT 17-0135.
2. Accept, on behalf of the public, the offer of dedication for a Public Utility
Easement as shown on Parcel Map AT 17-0135.
3. Authorize and direct the City Clerk to endorse the Council’s approval on the Map.
DISCUSSION:
Tentative Parcel Map AT 17-0135 was approved by the Planning Commission (PC) on
April 3, 2018 by PC Resolution No. 2018-0014. The Tentative Parcel Map authorized
the subdivision of two (2) existing parcels into four (4) single-family residential parcels.
Staff has determined that Parcel Map AT17-0135 is in substantial conformance with the
approved Tentative Parcel Map AT 17-0135 (City file # TMP 2017-0108). Pursuant to
California Government Code Section 66474.1, the approving legislative body (City
Council) shall not deny a Parcel Map provided it finds the Parcel Map is in substantial
conformance with the previously approved Tentative Parcel Map.
Both Chico Road and Traffic Way are presently constructed to full -width roadways
consistent with City design standards. The off-site (public) improvements required of
this subdivision are limited to new utility services and driveway approaches to serve
each parcel. These required improvements are already installed or currently under
construction in association with active construction permits issued for the subject
property.
Page 33 of 252
ITEM NUMBER: A-4
DATE: 11/13/18
The Public Works Director/City Engineer, Community Development Director, and City
Surveyor have reviewed the Parcel Map and Conditions of Approval and find that the
Conditions of Approval have been satisfied.
An offer of dedication for a Public Utility Easement is included on the Parcel Map. Staff
recommends that this offer of a public utility easement be accepted by the City Council.
Acceptance of this easement benefits all public utility companies and has no impact on
or imparts any liability upon the City of Atascadero.
FISCAL IMPACT:
None.
ATTACHMENT:
Parcel Map AT 17-0135
Page 34 of 252
ITEM NUMBER: A-4DATE: 11/13/18ATTACHMENT: 1Page 35 of 252
ITEM NUMBER: A-5
DATE: 11/13/18
Atascadero City Council
Staff Report – Public Works Department
Completion of Subdivision Improvements for Tract 2802 (Erica Court)
RECOMMENDATIONS:
Council:
1. Accept and certify the satisfactory completion of subdivision improvement work for
Tract 2802.
2. Authorize the City Engineer to release and/or decrease subdivision improvement
security on behalf of the City Council.
3. Accept the Erica Court public sewer main extension constructed with Tract 2802 into
the City of Atascadero Wastewater Collection System.
DISCUSSION:
The Final Map and the Subdivision Improvement Agreement (SIA) were approved by the City
Council on May 9, 2017 for Tract 2802. The Final Map and SIA were subsequently recorded
on June 27, 2017 in the Office of the San Luis Obispo County Recorder. A copy of the Final
Map for Tract 2802 is attached for reference.
The Atascadero Municipal Code (AMC) currently requires the City Council to accept and
certify completion of subdivision improvements upon report by the City Engineer. The City
Engineer’s office has inspected the subdivision improvement work associated with Tract
2802 and the City Engineer has determined said improvements to be acceptable and in
substantial conformance with the approved plans and specifications. A warranty bond will be
retained until satisfactory completion of the one-year gurantee and warranty period, including
any corrective work identified at the 10-month warranty inspection.
The City Engineer also recommends that the Council accept into the City’s wastewater
collection system the new public sewer main extended into Erica Court that serves the
parcels of Tract 2802. Only the public sewer main is being recommended for acceptance into
the City’s systems while all other subdivision improvements, including Erica Court roadway
maintenance, will be maintained by the property owners of Tract 2802.
FISCAL IMPACT:
None.
Page 36 of 252
ITEM NUMBER: A-5
DATE: 11/13/18
ATTACHMENT:
Final Map for Tract 2802
Page 37 of 252
ITEM NUMBER: A-5 DATE: ATTACHMENT: 11/13/18 1 Page 38 of 252
ITEM NUMBER: A-6
DATE: 11/13/18
Atascadero City Council
Staff Report – Public Works Department
Chicago Grade Landfill Agreement
RECOMMENDATION:
Council authorize the City Manager to execute a new agreement with Chicago Grade Landfill,
Inc., for exclusive depositing of City waste collections into Chicago Grade Landfill .
DISCUSSION:
The garbage collection, processing and disposal for properties located with the City is
provided through three vendors, namely:
1. Atascadero Waste Alternatives (AWA) – waste collection;
2. North County Recycling, Inc. – recycling;
3. Chicago Grade Landfill (CGL) – landfill disposal.
Chicago Grade Landfill (CGL) first opened in 1970 and has been accepting solid waste for
Atascadero residents since that time. Approximately 20% of the annual tonnage of trash
deposited at the CGL is generated within the City of Atas cadero, which does not include the
amount of trash hauled directly to the landfill by Atascadero homeowners, contractors and
others from within the City. The City of Atascadero is considered the “anchor tenant” of the
landfill operation; and we consider having a local, environmentally safe and reliable location
to recycle and dispose of solid waste for the residents of Atascadero to be very important.
In 2000, CGL and the City of Atascadero entered into an agreement for the exclusive
depositing of City waste collections into CGL. Several contract renewals and extensions have
been negotiated, reviewed and approved since that time. The current agreement between the
City and CGL was executed in September, 2012 and is effective through September 1, 2019.
In September 2017, the City approved the sale of the landfill to Allos Environmental, Inc., who
assumed the agreement. Staff has met with and has been negotiating with CGL
representatives to discuss the terms of the new agreement.
Key provisions of the newly negotiated agreement are:
Landfill Base Rate: $44.43 per ton effective January 1, 2019 (no change from
current contract)
Tipping Fee Paid to City: $ 1.00 per ton (no change)
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Term: 10 years (December 1, 2018 – December 1, 2028,
inclusive); thereafter, this Agreement may be extended for
an additional 5-year term
Rate Guarantee: City guaranteed lowest “per ton” disposal rate for
compacted solid waste. Added language allowing CGL to
offer a lower rate for remediated soil and other beneficial
re-use materials with City permission
CPI adjustments: 70% of current CPI on January 1, 2020 and annually
thereafter (changed from 50%)
No Charge: CGL accepts from the City for disposal all Wastewater
Treatment Plant sludge and road kill, at no charge. (no
change)
Collection Terms: All solid waste collected within City limits must be
delivered to CGL.
New Provisions: A provision to allow CGL to apply for an extraordinary rate
increase in specific circumstances was added.
Other Changes: Elimination of the language related to requirements around
the residual waste generated by the Materials Re covery
Facility.
In summary, throughout the history of our relationship with CGL, they have consistently been
a cooperative partner with the City and we fully expect that type of relationship to continue.
The base rate proposed by CGL is equal to the rate in their current contract and the proposed
increase from 50% to 70% CPI adjustments in this new agreement is reasonable and is on
par with the City’s other waste agreements. CGL’s request for the addition of language
related to a potential extraordinary rate increase in specific circumstances is also reasonable
in light of the frequency of significant regulation changes affecting waste processing.
ALTERNATIVES:
The Council may direct staff to go back and further negotiate any or all items of the
agreement or direct staff to not enter into an agreement with CGL for exclusive depositing of
City waste collections.
FISCAL IMPACT:
None.
ATTACHMENT:
Draft Contract with Chicago Grade Landfill (Showing redline changes from existing contract)
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AGREEMENT BETWEEN THE CITY OF ATASCADERO AND CHICAGO
GRADE LANDFILL, INC. FOR EXCLUSIVE DEPOSITING OF CITY WASTE
COLLECTIONS INTO CHICAGO GRADE LANDFILL
This Agreement for Exclusive Depositing of City Waste Collections Into Chicago Grade Landfill (the
"Agreement") is made and entered into, effective as of December 1, 2018 (the "Effective Date"), with reference
to the facts recited below by and between the CITY OF ATASCADERO, a municipal corporation, organized and
existing under the laws of the State of California ("City"), and CHICAGO GRADE LANDFILL, INC., a
California corporation ("Chicago Grade") Chicago Grade and the City may be collectively referred to as the
“Parties”.
RECITALS
A. Chicago Grade operates a landfill located at 2290 Homestead Road in Templeton, California (the
"Chicago Grade Landfill"), from which Chicago Grade has provided and is capable of providing solid waste
disposal services;
B. The Parties previously executed that certain Agreement for Exclusive Depositing of City Waste
Collections Into Chicago Grade Landfill executed in or about September 2012 (the "Prior Agreement"), pursuant
to which City designated the Chicago Grade Landfill as its exclusive location for the disposal of solid waste
collected by City's Franchised Waste Hauler, and Chicago Grade provided solid waste disposal services;
C. City has duly adopted Ordinance No. 56 which requires contractors providing solid waste
handling services for solid waste generated in the City to dispose of all refuse or garbage and rubbish at a disposal
site approved by the San Luis Obispo County Department of Health;
D. The Chicago Grade Landfill is approved for solid waste disposal by CalRecycle ;
E. Chicago Grade can and will furnish all personnel, equipment, and supplies necessary to
accept disposal of solid waste from all premises within the City;
F. City is authorized under its agreements with its franchised waste hauler to designate a specific
landfill into which waste collected within the City will be deposited; and
G. The City Council has determined that the grant of an exclusive agreement for disposal of waste
collected within the City into Chicago Grade Landfill is in the public interest.
AGREEMENTS:
NOW, THEREFORE, CITY AND CHICAGO GRADE DO HEREBY AGREE AS FOLLOWS:
1. DESIGNATION OF THE CHICAGO GRADE LANDFILL AS EXCLUSIVE LOCATION FOR
THE DISPOSAL OF SOLID WASTE COLLECTED BY CITY'S FRANCHISED WASTE HAULER.
Pursuant to Section 13(H) of its Solid Waste Collection Franchise Agreement, City designates the Chicago Grade
Landfill as the exclusive location for the disposal of compacted solid waste collected within the City of Atascadero
by its franchised waste hauler.
1.1 As used herein, the term "compacted solid waste" shall mean municipal solid waste that is
collected in the City of Atascadero pursuant to a franchise agreement with the City of Atascadero and delivered
in compactor trucks, provided that such term also shall include residual waste generated from all Materials
Recovery Facilities under contract with the City. The City shall enforce the provisions of current contracts between
the City and any Materials Recovery Facility (“MRF”) or other recycling facilities (collectively “Facilities”). The
City shall require provisions in all future contracts executed between the City and any MRF” or other Facilities”
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that (1) all residual waste generated by such Facilities shall be delivered solely to Chicago Grade Landfill; and
(2) all such Facilities shall submit to City quarterly written reports describing the quantities of waste delivered to
the Facilities by the City’s franchised waste hauler, and the overall percentage of residual waste generated by the
facility, during the prior quarter, and the manner in which and place where the facility disposed of such residuals;
and (3) Chicago Grade is a third party beneficiary of such provision in any such contract. Upon written request
from time to time, Chicago Grade may inspect the City's records relating to any Facilities under contract with the
City in order to confirm that all residual waste generated at such Facilities is being delivered to Chicago Grade
Landfill. For the purposes of this section, the terms “residual waste” and “residuals” shall mean material that
cannot be economically recycled and must be sent to a landfill.
1.2 During the term of this Agreement, City shall not designate or approve the disposal of such
compacted solid waste at any other landfill.
2. TERM OF AGREEMENT. Subject to Section 12 of this Agreement, the term of this Agreement
shall be from December 1, 2018, to December 1, 2028 inclusive. Thereafter, this Agreement may be extended for
a period of up to five years by the mutual agreement of the Parties, and City approval shall be at the discretion of
the City Manager. In the event this Agreement is terminated, in accordance with its terms, earlier than December
1, 2028, the status of Chicago Grade Landfill as the exclusive disposal site for compacted solid waste kept,
accumulated or generated in the City of Atascadero granted hereby shall terminate as of the date of termination of
the Agreement.
3. DEFINITIONS. Unless otherwise defined, or if the use or context clearly requires a different definition,
all words, terms and phrases in this Agreement and the derivations thereof shall have the meanings set forth in
Section 6-4.01 of the Atascadero Municipal Code.
4. CHARGES AND FEES
4.1 During the term of this Agreement, Chicago Grade shall charge City and City's
franchised waste hauler for accepting for disposal in the Chicago Grade Landfill compacted solid waste kept,
accumulated, or generated in the City of Atascadero. Charges shall be in the following amounts:
(a) During the term of this Agreement, Chicago Grade shall charge a maximum of Forty-
Two Dollars and Eighty Eight Cents ($42.0088) per ton of solid waste kept, accumulated, or generated in the City
of Atascadero that Chicago Grade accepts from City's franchised waste hauler for disposal in the Chicago Grade
Landfill (such rate, as increased pursuant to Sections 4. 1(a)(i) and (ii), the "Base Rate").
(i) Effective on January 1, 2019, such Base Rate in effect under this Section 4.1(a)
shall be increased by of the to $44.43. This is equal to fifty percent (50%) of the change in the CPI Index (as
defined in Section 4.2(a)(ii), below) from (A) the month of September 2016 (the "Base Month"), to (B) the month
of September 2018 (the "Adjustment Month").
Effective on January 1, 2020, and on January 1st of every year thereafter during the remaining Term of
this Agreement or any extension period (the “Adjustment Date”), such Base Rate then in effect under this Section
4.1(a) shall be increased by seventy percent (70%) of the percentage change in the CPI Index (as defined in Section
4.2(a)(ii), below) for the most recent twelve month period ending in the month of September immediately prior to
the Adjustment Date. For example, the CPI adj ustment to take effect on January 1, 2020 will be based on the
change in the CPI Index for the period from September 2018 through September 2019. And the CPI adjustment
to take effect on January 1, 2021 will be based on the change in the CPI Index for the period from September 2019
through September 2020.
Effective on January 1, 2019, such Base Rate in effect under this Section 4.1(a) shall be increased by fifty
percent (50%) of the change in the CPI Index (as defined in Section 4.2(a)(ii), below) from (A) the month of
September 2016 (the "Base Month"), to (B) the month of September 2018 (the "Adjustment Month").
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Effective on January 1 of very odd numbered year of the extension, if any, of the term of this Agreement
beyond the current term, the Base Rate shall be increased by fifty percent (50%) of the change in the CPI Index
(as defined in Section 4.2(a)(ii), below)utilizing the same designation for Base Month and Adjustment Month as
for the increases permitted on January 1, 2015 and January 1, 2017 and January 1, 2019. For example, the Base
Rate increase to effective on January 1, 2021 will use September 2018 as the Base Month and September 2020 as
the Adjustment Month.
On November 1 of each year in advance of any increase in the Base Rate, Chicago Landfill will provide
written notice to the City of the proposed amount of the increase and the calculations supporting the increase.
(ii) For purposes of this Agreement, the term "CPI Index" means the official
Consumer's Price Index for Urban Wage Earners and Clerical Workers, All Items, for the Los Angeles-Riverside-
Orange CountyLong Beach- Anaheim, CA area, 1982-1984=100 as published by the United States Department
of Labor, Bureau of Labor Statistics. If the CPI Index is no longer published in the Adjustment Month, then
appropriate reference figures for the CPI Index for the Base Month and the Adjustment Month shall be derived
from any successor comparable index mutually agreed upon by the Parties to be authoritat ive. If the Parties are
unable to agree, then the substituted index shall be selected by the then-presiding judge of the Superior Court for
San Luis Obispo County, California (the "County") upon application of either City or Chicago Grade.
(b) In the event Chicago Grade shall reduce its landfill disposal charges below Forty-two
($42.00) per ton to any customer depositing solid waste at Chicago Grade Landfill below the then-current amounts
charged for solid waste kept, accumulated or generated in the City of Atascadero as set forth in Section 4.1(a) ,
Chicago Grade shall at the same time reduce its landfill disposal charge in a like amount for the solid waste kept,
accumulated, or generated in the City of Atascadero that Chicago Grade accepts for disposal in its landfill, except
that this subparagraph shall not apply in the following instances:
(iii)(i) when Chicago Grade, upon prior written notice to City, grants a discounted
disposal charge up to 100% of the disposal charge that Chicago Grade is then
charging City, to customers that Chicago Grade considers to be charitable cases
(‘Charity Discount”), provided that Chicago Grade shall not provide a Charity
Discount more frequently than two (2) times per year to the same applicant., or
(ii) when Chicago Grade shall periodically receive material such as remediated soil,
or other materials categorized as beneficial reuse, Chicago Grade shall provide
advance written notice to the City prior to receipt of such material. In no instance
shall this exception apply to new or existing municipal, commercial or industrial
sold waste streams destined for disposal. The notice shall include a description
of the materials, the beneficial re-use, the proposed rate, the estimated dates, and
the proposed rate to be charged. The City shall have 10 working days to file a
challenge to the proposed lower rate. Any challenge filed by the City after the
10 working days shall be effective as of the date of the challenge and the City
may not seek restitution for any material deposited prior to the challenge
provided that Chicago Grade gave proper notice. If the City does protest the
lower rate, Chicago Grade and the City staff shall meet and if Chicago Grade
and City staff do not agree, the matter shall be submitted to the City Council for
a determination. The City Council determination shall be final.
4.2 During the term of this Agreement, Chicago Grade shall pay to City fees for the privilege of
accepting for disposal in its landfill compacted solid waste kept, accumulated, or generated in the City of
Atascadero and delivered to the landfill by City's franchised waste hauler. Fees shall be in the following amounts:
(a) Chicago Grade shall pay to the City not less than One Dollar and No Cent ($1.00) per ton
of compacted solid waste kept, accumulated, or generated in the City of Atascadero that Chicago Grade accepts
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for disposal from City's franchised waste hauler at the Chicago Grade Landfill, except that Chicago Grade
shall not be required to pay to the City this sum, or any other amount, f or solid waste that qualifies for the
Charity Discount described above. Chicago Grade shall also pay to the City an annual fee of $25,498
beginning with a first payment on September 1, 2012 and subsequent annual payments every September 1 with
the last pa yment due on September 1, 2018. Chicago Grade shall also pay directly to Atascadero Waste
Alternatives a one -time sum of $103,874 on or before November 27, 2012.
(b) Except for the annual payments and one-time payment described in Paragraph 4.2(a)
above, feeFee payments shall be paid quarterly and shall be computed and paid on the basis of tonnage of solid
waste kept, accumulated, or generated in the City of Atascadero that Chicago Grade accepts for disposal at the
Chicago Grade Landfill.
(c) Chicago Grade shall transmit all required fees to:
Administrative Services Director City of Atascadero
6500 Palma Avenue
Atascadero, California 93422
4.3 Except for the annual payments and one -time payment described in Paragraph 4.2(a) above,
feeFee payments shall be due and payable on the twentieth (20th) day of the month following the end of each
quarter. If fees are not paid by Chicago Grade when due, then in addition to the fees, Chicago Grade shall pay a
single late payment penalty for each such unpaid fee in an amount equal t o ten percent (10%) of the fee that was
not timely paid by Chicago Grade, and Chicago Grade also shall pay interest on the outstanding balance of all
unpaid fees at the rate of ten percent (10%) per annum or the maximum legal rate allowed, whichever is les s,
from the date the fees were due and payable to the date actually paid. If Chicago Grade remits fees by personal
delivery to City, such fees shall be deemed timely paid only if delivered on or before the due date. If Chicago
Grade remits fees by mail or other delivery service, such fees shall be deemed timely only if (1) the envelope
containing the fee payment bears a postmark or receipt showing that the payment was mailed or sent on or before
the due date or (2) Chicago Grade submits proof satisfactory to the Administrative Services Director that the
fee payment was in fact deposited in the mail or sent on or before the due date.
4.4 In the event Chicago Grade believes that it has paid fees in excess of the fees due to City, Chicago
Grade may submit a request for refund to the Administrative Services Director on a form provided by the
Director. If proof of overpayment is satisfactory to the Director, the Director s hall refund to Chicago Grade any
overpayment. Chicago Grade shall not apply any overpayment as a credit against any other amounts payable to
City unless specifically so authorized by the Administrative Services Director in writing. All sums due and
payable from City to Chicago Grade shall be due and payable monthly. If any sum is not paid by City when due,
then in addition to the fees, City shall pay a late fee of ten percent (10%) of the outstanding balance, and City shall
also pay interest on the outstanding balance at the rate of ten percent (10%) per annum, or the maximum legal rate
of interest, which is less, from the date the fees were due and payable to the date actually paid.
4.5 EXTRAORDINARY RATE INCREASE. The rates set by this Agreement are calculated to
pay certain expenses and costs that are of a contingent and uncertain nature. Therefore, in addition to the annual
rate adjustment provided by Section 4.1(i), the rates under this Agreement may, upon written request of Chicago
Grade or City, be further adjusted on an interim basis for increased or decreased expenses associated with
performance of the services hereunder due to any one or more of the following causes:
(a) material changes in Chicago Grade’s costs resulting from a Force Majeure event;
(b) changes to Chicago Grade’s operations or the City fee in Section 4.2(a) or other fees
required or initiated by City;
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(c) Chicago Grade desires to provide additional new services or the City requests the Chicago
Grade to provide any additional new services, or Chicago Grade desires or the City requests the Chicago Grade
to change the method of providing, or the technology used to provide, existing services under this Agreement;
(d) any change in law, statute, rule, regulation, ordinance, order or requirement of any
federal, state, regional or local government that occurs after the Effective Date of this Agreement and that directly
affects the expenses associated with performance of the services hereunder.
If Chicago Grade and City staff cannot agree on terms and conditions of such extraordinary rate adjustments the
matter shall be submitted to the City Council for a determination of whether an extraordinary rate adjustment
would be allowed and the amount of the adjustment. The City Council’s determination shall be final.
5. DISPOSAL OF SOLID WASTE
5.1 Chicago Grade shall accept disposal of all solid waste collected or transported by City's franchised
waste hauler to Chicago Grade Landfill. Chicago Grade shall, during the term of this Agreement, maintain
sufficient landfill capacity to accept disposal of all solid waste collected or transported by City's franchised
waste hauler to Chicago Grade landfill.
5.2 During the term of this Agreement, City shall direct all franchised waste haulers permitted
to collect solid waste within City to deliver such solid waste to Chicago Grade Landfill. City shall not, during the
term of this Agreement, direct that solid waste hauled pursuant to the City's franchise agreement be delivered to
a disposal site other than Chicago Grade Landfill. In the event City is currently party to a contract with a contractor
to collect and dispose of solid waste kept, accumulated or generated within City, City shall endeavor to
immediately amend such contract to specify that the contractor shall deliver solid waste collected under such
contract to Chicago Grade Landfill for disposal.
5.3 During the term of this Agreement, Chicago Grade shall accept free of charge (other than pick-
up and delivery charges) for disposal (a) all non-hazardous "sludge" generated by City, and (b) all non-hazardous
biosolids generated by City's Wastewater Treatment Plant, and (c) free of charge any dead deer or other animals
killed on City streets as may be acquired by the City Operations Staff.
6. REPORTS
6.1 Chicago Grade shall submit to City quarterly reports stating the total amount of solid
waste that Chicago Grade accepted for disposal from within the City during the reportable quarter; the total weight
(in tons) of all other solid waste accepted by Chicago Grade during the reportable quarter; and the total weight
and the weight by material category (in tons) of solid waste accepted by Chicago Grade during the reportable
quarter. Such quarterly reports shall be prepared in the form required by the Public Works Director. Each quarterly
report shall be submitted on or before the 15th day of the month following the end of the quarter (i.e., report due
April 15 for first quarter of the year) and submitted to:
Public Works Director
City of Atascadero
6500 Palma Avenue
Atascadero, California 93422
6.2 If the report required under Section 6.1 is not filed by the due date specified above, the report
shall be deemed delinquent. If the report remains delinquent for more than five (5) days after Chicago Grade's
receipt of a written notice from City, Chicago Grade shall pay to City a delinquent report charge in the amount of
One Hundred Dollars ($100.00). If the report remains delinquent for more than forty-five (45) days, Chicago
Grade shall pay to City a delinquent report charge in the amount of Five Hundred Dollars ($500.00). Such
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delinquent report charges shall be in addition to any fees or other charges payable by Chicago Grade under
this Agreement.
7. CHICAGO GRADE'S RECORDS AND CITY’S RECORDS
7.1 Chicago Grade shall keep and maintain books of account, income statements and
supporting documents of all business transactions conducted by Chicago Grade in connection with the solid waste
landfill disposal services of Chicago Grade under this Agreement. Such records shall be kept at Chicago Grade's
place of business for a period of three (3) years after the end of the calendar year to which such records relate.
7.2 The books of account, income statements and supporting documents shall be made
available to City at Chicago Grade's place of business during normal business hours upon request or demand of
the City Manager, Public Works Director, or other City officer, employee or consultant authorized by any of these
officers. The purpose of such inspection and/or audit shall be for verification of the fees paid by Chicago Grade
under this Agreement, the accuracy thereof; charges made to others for disposal at the Chicago Grade Landfill
and for verification of the amounts of solid waste reported by Chicago Grade pursuant to this Agreement. To the
extent authorized by law, Chicago Grade's books of account, incomes statements and other documents accessed
by City shall be kept confidential.
7.3 Chicago Grade shall reimburse City for City's costs in performan ce of an audit if, as a result of
the audit it is determined:
(a) There was any intentional misrepresentation by Chicago Grade with respect to the
amount of fees due to the City; or
(b) There is a one thousand dollars ($1,000.00) or greater discrepancy in the amount of fees
due to the City. Such reimbursement shall be paid by Chicago Grade WITHIN THIRTY (30) days of the date City
notifies Chicago Grade in writing of the amount of City's costs.
7.4 City shall keep and maintain books of account, income statements and supporting documents of
all business transactions conducted by City and its franchised waste haulers in connection with the solid waste
disposal services. Such records shall be kept at City’s place of business for a period of three (3) years after the
end of the calendar year to which such records relate.
7.5 The waste tonnage records for all solid waste kept, accumulated, or generated in the City of
Atascadero shall be made available to Chicago Grade at City’s place of business during normal business hours
upon request or demand of any representative of Chicago Grade. The purpose of such inspection and/or audit shall
be for verification of the solid waste generated and the sums paid by City and its franchised waste hauler under
this Agreement, as well as the residual waste generated by any MRF or other recycling facility doing business
with City..
8. INSURANCE REQUIREMENTS. Without limiting the indemnification provided in Section 9, Chicago
Grade shall obtain and shall maintain throughout the term of this Agreement, at Chicago Grade's sole cost and
expense, insurance against claims for injuries to persons or damages to property which may arise from or in
connection with the solid waste disposal services provided under this Agreement by Chicago Grade, its agents,
representatives, employees or contractors.
8.1 MINIMUM SCOPE AND LIMITS OF INSURANCE. Chicago Grade shall maintain at least
the following minimum insurance coverages:
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(a) COMMERCIAL GENERAL LIABILITY: $1,000,000 combined single limit per
occurrence for bodily injury, personal injury, and property damage. The Commercial General Liability insurance
limit shall apply separately to this Agreement or the general aggregate limit shall be twice the required occurrence
limit. The Commercial General Liability insurance shall be written on a "claims made" basis. Following the
expiration or termination of this Agreement, Chicago Grade shall include City as an additional insured under
the policy for three (3) years to protect City from claims filed after said expiration or termination. In the event
that the Chicago Grade Landfill closes during said three-year period, Chicago Grade shall obtain "tail coverage"
protecting City from said claims.
(b) POLLUTION LEGAL LIABILITY: $1011,000,000 per occurrence on a claims-made
basis for pollution releases. Following the expiration or termination of this Agreement, Chicago Grade shall
include City as an additional insured under the policy for four (4) years to protect City from claims filed after said
expiration or termination. In the event that the Chicago Grade Landfill closes during said four (4) year period,
Chicago Grade shall obtain "tail coverage" protecting City from said claims for the remainder of such four-year
period if commercially available. If four (4) years is not commercially available, then Chicago Grade will
maintain such insurance for such period, not to exceed four (4) years, for which such insurance is commercially
available. In addition, Chicago Grade will comply with all CalRecycle obligations relating to closure, post-closure
and corrective action bonding, surety, and/or insurance requirements for the Chicago Grade Landfill.
(c) AUTOMOBILE LIABILITY: $1,000,000 combined single limit per occurrence for
bodily injury and property damage, and shall include sudden and accidental coverage.
(d) WORKERS' COMPENSATION AND EMPLOYERS LIABILITY: Workers'
Compensation statutory limits as required by the California Labor Code and Employer s Liability limits of
$1,000,000 per accident.
8.2 DEDUCTIBLES AND SELF-INSURED RETENTIONS. Any deductibles or self-insured
retentions must be declared to and approved by City. At the option of City either:
(a) The insurer shall reduce or eliminate such deductibles or self-insured retentions as
respects City, its officers, employees, agents and contractors; or
(b) Chicago Grade shall procure a bond guaranteeing payment of losses and related
investigations, claim administration and defense expenses in an amount specified by City.
8.3 ENDORSEMENTS. The required insurance policies are to contain, or be endorsed to contain,
the following provisions:
(a) GENERAL LIABILITY AND AUTOMOBILE LIABILITY COVERAGES
(i) The City of Atascadero, its officers, elected officials, employees, agents and
contractors are to be covered as an additional insured as respects: liability arising out of activities performed by,
or on behalf of Chicago Grade; products and completed operations of Chicago Grade; premises owned, leased or
used by Chicago Grade; and automobiles owned, leased, hired or borrowed by Chicago Grade. The coverage shall
contain no special limitations on the scope of protection afforded to City, its officers, elected officials, employees
and agents and contractors.
(ii) Chicago Grade's insurance coverage shall be primary insurance as respects City,
its officers, elected officials, employees, agents and contractors. Any insurance or self -insurance maintained by
City, its officers, elected officials, employees, agents or contractors shall be excess o f Chicago Grade's insurance
and shall not contribute with it.
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(iii) Coverage shall state that Chicago Grade's insurance shall apply separately to each
insured against whom claim is made or suit is brought, except with respect to the limits of the insurer's liability.
(b) ALL COVERAGES. Each insurance policy required by this Agreement shall be
endorsed to state that coverage shall not be suspended, voided, canceled, or reduced in limits except after thirty
(30) days' prior written notice has been given to the City.
8.4 PLACEMENT OF INSURANCE. Insurance shall be placed with an insurance company
certified to do business in the State of California, with Best's rating A-VII or better.
8.5 PROOF OF INSURANCE. Chicago Grade shall furnish City with certificates of
insurance and with original endorsements affecting coverage required by this Agreement. The certificates and
endorsements for each insurance policy are to be signed by a person authorized by that insurer to bind coverage
on its behalf. Proof of insurance shall be mailed or p ersonally delivered to the following address or to such
other address as may be directed in writing by the City:
Deputy City Manager/City Clerk
City of Atascadero
6500 Palma Ave.
Atascadero, California 93422
8.6 SUBCONTRACTORS. Chicago Grade shall include all subcontractors as insureds under
Chicago Grade's policies or shall obtain separate certificates and endorsements for each subcontractor.
8.7 FAILURE TO PROVIDE INSURANCE. Chicago Grade agrees that if any policy of
insurance required by this Agreement is not maintained in full force and effect, the City Manager may, in his sole
discretion, suspend this Agreement, immediately, until such time as the required insurance is in effect and the
required certificates and endorsements are delivered to the City.
9. INDEMNIFICATION. Chicago Grade shall indemnify the City as follows:
9.1 GENERAL LIABILITY: Chicago Grade, as a condition of this agreement, shall indemnify,
defend with counsel approved by City, protect and hold harmless the City, its officers, elected officials, employees
and agents, with respect to any loss, liability, injury or damage that arises out of or is in any way related to, the
acts or omissions of Chicago Grade, its employees, officers and agents in the performance of any activity,
function or duty authorized by, or required under the terms of, this Agreement, or that arises out of or is in
any way related to Chicago Grade's operation of its Chicago Grade Landfill, except Chicago Grade shall not be
required to indemnify City in connection with the sole negligence or willful acts or omissions of the City, its
officers, elected officials, agents or employees.
9.2 HAZARDOUS SUBSTANCES INDEMNIFICATION: Chicago Grade shall indemnify,
defend with counsel approved by City, protect and hold harmless City, its officers, elected officials, employees,
agents, assigns, and any successor or successors to City's interest from and against all claims, actual damages
including, but not limited to, special and consequential damages, natural resource damage, punitive damages,
injuries, costs, response, remediation, and removal costs, losses, demands, debts, liens, liabilities, causes of
action, suits, legal or administrative proceedings, interest, fines, ch arges, penalties and expenses, attorneys' and
expert witness fees and costs incurred in connection with defending against any of the foregoing or in enforcing
this indemnity of any kind whatsoever paid, incurred or suffered by, or asserted against City or its officers, elected
officials, employees, agents or Chicago Grade arising from or attributable to Chicago Grade's activities under this
Agreement, or that arises out of or is in any way related to Chicago Grade's operation of its Chicago Grade
Landfill, concerning any hazardous substances or hazardous waste at any place where Chicago Grade stores or
disposes of solid or hazardous waste pursuant to this Agreement, or preceding agreements between City and
Chicago Grade. The foregoing indemnity is intended t o operate as an agreement pursuant to the
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Comprehensive Environmental Response, Compensation and Liability Act 42 U.S.C. Section 9607(e) and any
amendments thereto; California Health and Safety Code Section 25364, to insure, protect, hold harmless, and
indemnify City from liability.
9.3 City agrees to give notice to Chicago Grade when the City receives a claim for damages
or other liability for which Chicago Grade has provided indemnification under this Section.
10. COMPLIANCE WITH LAW
10.1 Chicago Grade shall perform all solid waste services under this Agreement in accordance with
applicable federal, state, and local law, and in accordance with the terms and conditions of this Agreement.
10.2 Over the course of the term of this Agreement, Chicago Grade and City agree that th e City's
ordinances may be amended as necessary to permit the City to comply with changes to federal, state, and local
legislative regulatory requirements, which may affect or alter City's solid waste handling obligations or
requirements for solid waste management. Chicago Grade agrees to comply with any such amendment of the
City's ordinances.
11. PERMITS AND LICENSES. Chicago Grade shall obtain and maintain, at Chicago Grade's sole cost
and expense, all permits and licenses applicable to Chicago Grade's operations under the Agreement which are
required of Chicago Grade by any governmental agency.
12. TERMINATION
12.1 Upon an Event of Default by Chicago Grade, the City shall have the right to terminate this
Agreement. City shall provide written notice of termination setting forth with specificity the event of default upon
which the termination is based. The termination shall become effective within ten (10) days of Chicago Grade's
receipt of notice unless within said period it serves on City a written demand for binding arbitration as provided
in Section 13 herein. As used herein, an "Event of Default" includes the following events:
(a) Chicago Grade fails to perform its obligations under this Agreement, or any present or
future supplement or amendment to this Agreement, and fails to cure such breach within thirty (30) days of
receiving notice from the City specifying the breach;
(b) Any representation or disclosure made to City by Chicago Grade in connection with or
as an inducement to entering into this Agreement or any future supplement or amendment to this Agreement,
which proves to be false or misleading in any material respect as of the time such representation or disclosure
is made, whether or not any such representation or disclosure appears as part of this Agreement;
(c) CalRecycle revokes or otherwise terminates Chicago Grade's permit to operate a sanitary
landfill at the Chicago Grade Landfill;
(d) There is any termination or suspension of the transaction of business by Chicago Grade,
including without limit, due to labor unrest including strike, work stoppage or slowdown, sickout, picketing, or
other concerted job action lasting more than two (2) days;
(e) Chicago Grade files a voluntary petition for debt relief under any applicable bankruptcy,
insolvency, debtor relief or other similar law now or hereafter in effect, or shall consent to the appointment of or
taking of possession by a receiver, liquidator, assignee, trustee, custodian, sequestrator (or similar official) of
Chicago Grade for any part of Chicago Grade's operating assets or any substantial part of Chicago Grade's
property, or shall make any general assignment for the benefit of Chicago Grade's creditors, or shall fail generally
to pay Chicago Grade's debts as they become due or shall take any action in furtherance of any of the foregoing;
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(f) A court having jurisdiction shall enter a decree or order for relief in respect of the Chicago
Grade, in any involuntary case brought under any bankruptcy, insolvency, debtor relief, or similar law now or
hereafter in effect, or Chicago Grade shall consent to or shall fail to oppose any such proceeding, or any such
court shall enter a decree or order appointing a receiver, liquidator, assignee, custodian, trustee, sequestrator (or
similar official) of the Chicago Grade or for any part of C hicago Grade's operating equipment or assets, or
orders the winding up or liquidation of the affairs of Chicago Grade.
12.2 In the event the Agreement is terminated pursuant to Section 12.1 above or the term of this
Agreement expires:
(a) Chicago Grade shall remain liable to City for any and all fees that would otherwise
be payable by Chicago Grade, for any and all late payment charges and interest assessed pursuant to Section 4 of
this Agreement, and for any and all delinquent report charges assessed pursuant to Section 6 of this Agreement.
(b) Chicago Grade shall have a continuing obligation to submit to City all reports required
by Section 6 of this Agreement which relate to the acceptance of solid waste kept, accumulated or generated in
the City of Atascadero by Chicago Grade up to and including the date of termination, suspension, or expiration.
(c) Chicago Grade agrees to continue to provide the indemnification required in this
Agreement after its suspension or termination. Such indemnification includes, but is not limited to, the hazardous
materials indemnification in Section 9.
13. MEDIATION
13.1 Prior to filing any legal action in connection with, or relating in any way to, this Agreement, the
Parties agree to submit any dispute to a mediator to be selected by mutual agreement of the Parties.
13.2 The cost of the mediator shall be split evenly between the Parties.
13.3 The rules for the mediation shall be set by the mediator.
13.4 Any party requesting mediation (“Requesting Party”) shall do so in writing to the other party
(“Responding Party”) with the names of three proposed mediators and the Responding Party shall have ten (10)
calendar days to either (1) select one of the mediators to serve as the mediator or (2) propose three different
mediators to the Requesting Party.
13.5 If, after the exchange of proposed mediators as provided herein, the Parties are unable to agree
upon a mediator and the dispute between the Parties is not otherwise settled, then the Requesting Party shall file
a Petition with the San Luis Obispo Superior requesting the Court to appoint a mediator.
13.6 The Parties agree that if mediation is not completed within forty -five (45) days from the date of
the written request for mediation by the Requesting Party, the Requesting Party has the right, but not the
obligation, to file a lawsuit.
14. ASSIGNMENT. Chicago Grade shall not assign, sell, subcontract, transfer or otherwise delegate its
authority to perform any obligations under the Agreement without prior express written consent of the City
Council, which consent shall not be unreasonably withheld. This prohibition includes any transfer of ownership
or control of Chicago Grade in any one transaction or series of related transaction (other than (i) transfers among
persons who are beneficial owners of Chicago Grade as of the Effective Date of this Agreement, and (ii) transfers
from such persons to their heirs upon the death of those persons who are beneficial owners of Chicago Grade as
of the Effective Date of this Agreement), or the conveyance of a majority of Chicago Grade's stock to a new
controlling interest. In the event City authorizes Chicago Grade to assign, sell, subcontract, transfer or otherwise
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delegate its authority to perform any obligations under the Agreement, the provisions of this Agreement shall
inure to the benefit of and be binding on the successors and permitted assigns of the Parties.
15. MISCELLANEOUS PROVISIONS
15.1 NOTICES. All notices required by this Agreement shall be given (a) by deposit in the United
States mail, postage prepaid and return receipt requested and (b) by email, addressed to the Parties as follows:
If to City: If to Chicago Grade:
To: Lara Christensen
Deputy City Manager/City Clerk
City of Atascadero
6500 Palma Ave
Atascadero, California 93422
Email: [lchristensen @atascadero.org]
With a copy to Brian A. Pierik
Email: bpierik@bwslaw.com
To: Chicago Grade Landfill, Inc.
Attn: Elizabeth Ann Garner, CEO
2290 Homestead Road
Templeton, California 93465
Email:ann.garner@allosenv.com
With a copy to Van Katzman
Email: vkatzman@ascentllp.com
Notice shall be deemed effective on the date personally served or, if mailed, three (3) days after the date deposited
in the mails by certified or registered mail, return of receipt requested, or, if transmitted by email, on the date
on which transmitted.
15.2 AMENDMENTS. This Agreement supersedes the Prior Agreement and all other prior
agreements and understandings between the Parties and all obligations of the Parties under the Prior Agreement
and all other prior agreements and understandings, regarding the subject matter hereof, and may not be modified
or terminated orally, and no modification, termination or attempted waiver of any of the provisions hereof shall
be binding unless in writing and signed by the party against whom the same is sought to be enforced.
15.3 APPLICABLE LAW. This Agreement and the transactions herein contemplated shall be
construed in accordance with and governed by the applicable laws of the State of California and of the United
States.
15.4 AUTHORITY. The Parties signing below represent and warrant that they have the requisite
authority to bind the entities on whose behalf they are signing.
15.5 SEVERABILITY. If any provision of this Agreement is determined by a court of
competent jurisdiction to be invalid or unenforceable, the remaining provisions shall not be affected unless their
enforcement under the circumstances would be unreasonable, inequitable or would otherwise frustrate the
purposes of this Agreement.
15.6 WAIVER. The waiver by either party of any breach or violation of any provisions of this
Agreement shall not be deemed to be a waiver of any breach or violation of any other provision nor of any
subsequent breach of violation of the same or any other provision. The subsequent acceptance by either party of
any monies which become due hereunder shall not be deemed to be a waiver of any preexisting or concurrent
breach or violation by the other party of any provision of this Agreement.
15.7 COUNTERPARTS. This Agreement may be executed in counterparts, each of which shall
be considered an original and all of which, taken together, shall be one and the same instrument, binding upon
each signatory.
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15.8 SECTION HEADINGS. The section headings in this Agreement are for convenience of
reference only and are not intended to be used in the construction of this Agreement nor to alter or affect any of
its provisions.
15.9 INTERPRETATION. This Agreement shall be interpreted and construed reasonably and
neither for nor against either party, regardless of the degree to which either party partici pated in its drafting.
15.10 ENTIRE AGREEMENT. This Agreement represents the full and entire Agreement between the
Parties with respect to the matters covered herein, and supersedes and replaces all prior and contemporaneous
understandings and agreements, including the Prior Agreement.
[Signatures appear on the following page.]
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WITNESS THE EXECUTION OF THIS AGREEMENT ON THE DATE WRITTEN BELOW
EACH SIGNATURE:
ATTEST
_______________________________________
Lara Christensen,
City Clerk
DATE: _________________________________
"CITY"
CITY OF ATASCADERO, a Municipal
Corporation
By:__________________________________
Mayor Tom O’Malley
DATE:
______________________________
APPROVED AS TO FORM:
_______________________________________
Brian A. Pierik
City Attorney
DATE: _________________________________
APPROVED AS TO FORM:
Van Katzman
Attorney for Chicago Grade Landfill, Inc.
DATE: __________________________________
CHICAGO GRADE LANDFILL, INC.,
a California Corporation
By: _____________________________
Elizabeth Ann Garner, CEO
DATE: __________________________
Page 53 of 252
ITEM NUMBER: C-1
DATE: 11/13/18
Atascadero City Council
Staff Report – Public Works Department
Approve Local Agency Management Plan for Onsite Wastewater
Treatment (Septic) Systems Standards
RECOMMENDATIONS:
Council:
1. Authorize staff to submit the final draft Local Agency Management Plan to
Regional Water Quality Control Board for approval.
2. Adopt Draft Resolution adopting the City of Atascadero Local Agency
Management Program (LAMP) as the new City standards for Onsite Wastewater
Treatment Systems effective the day after approval of the LAMP by the Regional
Water Quality Control Board.
3. Authorize the Administrative Services Director to appropriate an additional
$15,000 in General Fund reserves toward the LAMP development budget to
cover additional costs associated with LAMP completion for a total budget of
$65,000.
DISCUSSION:
Background:
In June 2012, the State Water Resources Control Board adopted the Water Quality
Control Policy for Siting, Design, Operation, and Maintenance of Onsite Wastewater
Treatment Systems (OWTS Policy) which mandates local permitting agencies to comply
with the new requirements. The OWTS Policy significantly alters the allowable use and
design of Onsite Wastewater Treatment Systems (OWTS)/Septic Systems in
Atascadero. The OWTS Policy adopted by the State Water Resources Control Board
sets forth specific requirements for the repair, maintenance and construction of septic
systems. The OWTS Policy states:
The purpose of this Policy is to allow the continued use of OWTS, while
protecting water quality and public health. This Policy recognizes that
responsible local agencies can provide the most effective means to manage
OWTS on a routine basis.
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The OWTS Policy allows local agencies the option of developing a Local Agency
Management Plan (LAMP) to establish their own septic system design requirements;
however, review and approval of LAMPs has been delegated to the local Regional
Water Quality Control Boards (RWQCB). If a local agency does not adopt a LAMP, it
must follow the requirements set forth in the OWTS Policy and all design review and
permitting for new and replacement septic systems that cannot meet Tier 1 siting and
sizing requirements are under the jurisdiction of the RWQCB until a LAMP is approved.
Council approved funding in October 2016 for staff to contract with a consultant to
prepare a City LAMP document. Monsoon Consultants of San Luis Obispo was
selected to prepare the LAMP through an informal proposal process pursuant to the City
Purchasing Policy. The LAMP process has included the following milestones:
October 25, 2016 Council approved funding for LAMP preparation
November 21, 2016 Executed contract with Monsoon Consultants
Sept. 26, 2017 Draft LAMP presented to City Council
December 7, 2017 First draft LAMP submitted to RWQCB
March 7, 2018 Received RWQCB comments
March 27, 2018 Second draft LAMP submitted to RWQCB
April 6, 2018 Third draft LAMP submitted to RWQCB
May 13, 2018 Deadline for approval of an agency’s LAMP passes
and the City can no longer approve septic systems
that do not comply with Tier 1 standards
July 2, 2018 Received RWQCB comments
August 28, 2018 Fourth draft LAMP submitted to RWQCB
October 5, 2018 Fifth draft LAMP submitted to RWQCB
City and RWQCB staff have met and discussed the LAMP document many times during
the past year, and the attached final draft LAMP is ready to be considered for
implementation. To be implemented, the LAMP needs to be adopted by City Council
and approved by the RWQCB (not at the staff level). At this time City staff believes the
LAMP will be on the December 6-7, 2018 RWQCB meeting agenda in San Luis Obispo.
However, the agenda has not yet been finalized.
Analysis:
The City of Atascadero has a unique position within the County, being the least densely
populated incorporated area, and particularly well suited for septic systems. In addition
to large lot sizes, all residents are served with domestic water from Atascadero Mutual
Water Company, which removes the risk of cross-contamination of individual domestic
drinking wells that can occur with poor siting and design of septic systems on a parcel.
The City has a total of 9,890 residential parcels, of which 4,610 are served by the City
municipal sanitary sewer system. The remaining parcels are served by septic.
Adoption of the LAMP will require adjustments to previous City standards for septic
siting and design. These LAMP components are requirements mandated by the OWTS
Policy, but to the greatest extent possible City staff has tailored them to fit the City’s
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unique conditions. Staff has outlined several of the most significant impacts the LAMP
will have on new and replaced septic design in the following sections:
Subdivision Minimum Lot Sizes:
Previously, the City followed State regulations identified in the Water Quality Control
Plan for the Central Coast Basin (Basin Plan) for minimum lot sizes and septic system
design for subdivisions and previously entitled parcels. In general, this results in one
acre minimum lot sizes for new non-sewered subdivisions. This regulatory framework
also permits secondary units provided a minimum lot size of 1 -acre is achieved. Site
specific conditions are reviewed and an approved engineering design is required to
receive permits for new or replacement systems.
Under the OWTS Policy, minimum lot sizes for subdivisions with OWTS’s are
determined based upon average annual rainfall. This requirement does not pertain to
existing lots of record or replacement systems. Based upon an analysis of existing
subdividable parcels and minimum lots sizes allowed by land use, the changes to
minimum lot sizes is expected to impact a very small handful of parcels, likely less than
ten parcels total. For future subdivisions not connected to sewer, the average annual
rainfall will be determined, (based upon modeled PRISM data), and minimum lot sizes
established from rainfall data. Higher average annual rainfall allows for smaller
minimum lot sizes. Based upon rainfall data, minimum lot sizes could range from
approximately one to two acres in higher and lower rainfall locations, respectively.
There may also remain opportunities to cluster development into smaller parcels if
overall density complies with the LAMP, although this is uncertain.
Conventional OWTS Sizing:
It should be noted that the OWTS Policy, and subsequently the LAMP, pertains only to
the portion of an OWTS from the septic tank outward. All interior plumbing and exterior
plumbing out to the septic tank, fixtures, and generally the septic tank itself will continue
to be governed by the California Plumbing Code and under the purview of the Building
Department.
The OWTS Policy and LAMP deal almost entirely with the siting and design of the septic
distribution system, or leach field. Previously, the City utilized the California Plumbing
Code to determine the sizing of traditional leach fields and seepage pit dispersal
systems. However, the LAMP will now control sizing for these “conventional” systems.
Since the existing sizing calculations were conserva tive, the new sizing will not differ
significantly under most scenarios.
While seepage pits are considered a “conventional” system, in order to meet RWQCB
requirements, the LAMP will require supplemental treatment systems for new systems
proposing seepage pits. When seepage pits are used for replacement systems,
supplemental treatment will not be required but may be necessitated under certain site
conditions.
Alternative OWTS:
The LAMP does allow Alternative OWTS’s when a site will not accommodate a
conventional septic system. Alternative OWTS’s include Mound Systems, Raised Sand
Filter Beds, Shallow Pressure Distribution Systems, and Drip Dispersal Systems.
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Based on minimum vertical separation to groundwater these systems may require the
use of a supplemental treatment system and have other design parameters specified.
These type of systems are not used often, but may become more common as
constrained lots reach the end of serviceable life on existing systems and replacement
alternatives sought.
Supplemental Treatment Systems:
Based on separation to groundwater and OWTS type, supplemental treatment may be
required. The LAMP does not identify specific supplemental treatment types, but rather,
defines treatment minimum parameters that must be met. Supplemental treatment
systems are typically installed in-line and consist of aeration chambers, media filters or
other similar components. Supplemental treatment systems are generally proprietary
products, may be costly to install and maintain, and will require maintenanc e and
operations agreements that are recorded on parcel deed.
OWTS in Degraded Basins:
One item specific to the Central Coast RWQCB is the requirement that the agencies
with LAMPs commit to developing an Advanced Groundwater Protection Management
Program (AGPMP) should a groundwater basin be identified as degraded due to OWTS
septic activities at some future time. (See Section 4.13 of LAMP Document) City staff
has discussed this item extensively with RWQCB staff, and developed language that
protects the City from possible overreach by the RWQCB and providing protection of
groundwater resources.
Annual Reporting:
The OWTS Policy requires that all agencies developing LAMP’s are to submit annual
reports including: number and location of complaints related to OWTS; number,
location, tier and description of permits issued for new and replacement OWTS’s;
number, location and results of septage pumper reports; list of applications and
registrations issued to local septage pumpers; number and location of supplemental
treatment systems and their performance.
Additionally, the City will compile and submit any collected water quality data sources,
including from studies, monitoring wells, domestic water well te sting, public water
systems testing data, and stream sampling.
Finally, every fifth year the City will be required to prepare and submit a Water Quality
Assessment Report that will analyze the data from the water quality sources to
determine if there is water quality degradation attributable to OWTS’s.
Next Steps:
Below are the expected next steps and timeline for final adoption of the LAMP and
related Municipal Code changes:
1. LAMP present to Central Coast Water Board for approval. (anticipate December
6-7, 2018, San Luis Obispo)
2. Once approved by the Central Coast Water Board, the LAMP becomes effective
as new City standards for siting and design of new and replacement OWTS’s.
(December 7, 2018)
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3. Staff will identify proposed revisions to the Municipal Code that may be in
discrepancy with the final draft LAMP. (January-March, 2019)
4. Resolution to adopt changes to Municipal Code before Council for approval.
(April-June 2019)
Conclusion:
The LAMP document prepared by Monsoon Consultants and completed by City staff is
comprehensive and provides a reasonable approach to managing, siting, and design of
septic within the City of Atascadero. The final draft LAMP provides new septic
standards and allows the City to retain local control to permit and manage all existing
and new septic within the City. Without a LAMP, the City will only be allowed to permit
Tier 1 (conventional leach fields) septic that meet the OWTS Policy, with all other septic
permitted through the RWQCB. Currently, OWTS permitted through the RWQCB
require annual permit fees of approximately $1,100. Additionally, the LAMP provides
detailed design parameters, applicable to all parcels within the City, which will continue
to protect environmental and groundwater resources.
The process to work through the LAMP approval with RWQCB staff was a tedious one
and required much more time and effort than initially anticipated by City staff. There
entailed many more meetings, communications, supplemental analysis, compiling data
and information, and various revisions to the LAMP document beyond the initial
development of the LAMP document. As such, staff is requesting an additional $15,000
in General Fund reserves to cover the additional costs of consultant fees for a total
LAMP budget of $65,000. For comparison purposes, San Luis Obispo County has likely
spent over $150,000 toward their LAMP development, which is still months away from
obtaining approval.
FISCAL IMPACT:
Approving staff recommendations will result in an increase of $15,000 in General Fund
reserves toward the LAMP document development for a total LAMP budget of $65,000.
ATTACHMENTS:
1. Draft Resolution
2. Final Draft of Atascadero Local Agency Management Plan (LAMP)
Page 58 of 252
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DRAFT RESOLUTION
RESOLUTION OF THE CITY COUNCIL
OF THE CITY OF ATASCADERO, CALIFORNIA,
ADOPTING THE CITY OF ATASCADERO LOCAL AGENCY
MANAGEMENT PROGRAM (LAMP) FOR THE SITING, DESIGN,
OPERATION, MAINTENANCE, AND MANAGEMENT OF ONSITE
WASTEWATER TREATMENT SYSTEMS
WHEREAS, the State Water Resources Control Board adopted, on June 19, 2012, the
Water Quality Control Policy for Siting, Design, Operation, and Maintenance of Onsite Wastewater
Treatment Systems (OWTS Policy); and
WHEREAS, the OWTS Policy establishes a statewide, risk-based, tiered approach for the
regulation and management of OWTS (sanitary septic system) installations and replacements, and
sets the level of performance and protection expected from OWTS based upon a single set of
generalized statewide geological and climatic data and conditions; and
WHEREAS, the OWTS Policy allows local agencies to develop OWTS standards for new
or replacement systems by means of a Local Agency Management Program (LAMP) that supersedes
the OWTS Policy to account for the unique geological and climatic characteristics of the agency’s
jurisdiction and provide local agency control for OWTS management and permitting; and
WHEREAS, the Atascadero City Council directed staff to pursue development of a LAMP
for the City of Atascadero on October 25, 2016 and authorized a contract with Monsoon Consultants
to prepare the LAMP on November 21, 2016; and
WHEREAS, a draft LAMP was presented and reviewed by the City Council on September
26, 2017 and was subsequently revised based upon City Council input and regular meetings and
discussions between City staff and Central Coast Regional Water Quality Control Board (RWQCB)
staff; and
WHEREAS, a final draft LAMP document was presented and reviewed by the City Council
on November 13, 2018 and requires approval by the Central Coast RWQCB prior to implementation;
and
WHEREAS, the City of Atascadero LAMP is scheduled to be considered for approval by
the Central Coast RWQCB at their December 6-7, 2018 regular board meeting.
NOW, THEREFORE BE IT RESOLVED, by the City Council of the City of Atascadero:
SECTION 1. The City of Atascadero Local Agency Management Program (LAMP) for the
siting, design, operation, maintenance, and management of onsite wastewater treatment systems
(OWTS) dated November 13, 2018 is hereby adopted and will supersede all previous City standards
for sanitary septic systems.
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ATTACHMENT:
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SECTION 2. The City of Atascadero LAMP will become effective the day after the date
approved by the Central Coast Regional Water Quality Control Board.
PASSED AND ADOPTED at a regular meeting of the City Council held on the 13th day of
November, 2018.
On motion by Council Member ___________ and seconded by Council Member
___________, the foregoing Resolution is hereby adopted in its entirety on the following roll call vote:
AYES:
NOES:
ABSENT:
ABSTAIN:
CITY OF ATASCADERO
______________________________
Tom O’Malley, Mayor
ATTEST:
______________________________
Lara K. Christensen, City Clerk
APPROVED AS TO FORM:
______________________________
Brian A. Pierik, City Attorney
Page 60 of 252
CITY OF ATASCADERO
Local Agency Management Program (LAMP)
Prepared by: Monsoon Consultants
breely@monsoonconsultants.com
A comprehensive policy for the management of Onsite Wastewater Treatment Systems
November 13, 2018
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
Page 61 of 252
Contents
PART 1 INTRODUCTION & BACKGROUND ......................................................................................................... 1
1.1 INTRODUCTION .......................................................................................................................................... 11
1.2 BACKGROUND ............................................................................................................................................ 12
1.3 STATE & LOCAL REQUIREMENTS ................................................................................................................ 13
1.4 GEOGRAPHIC AREA .................................................................................................................................... 15
1.5 OVERVIEW OF EXISTING ONSITE WASTEWATER TREATMENT SYSTEMS .................................................... 15
1.6 EXISTING MUNICIPAL SANITARY SEWER COLLECTION SYSTEM .................................................................. 16
1.7 AREAS OF POTENTIAL EXPANSION OF THE EXISTING SANITARY SEWER COLLECTION SYSTEM .................. 17
1.8 ORGANIZATION OF THIS LAMP ................................................................................................................... 17
PART 2 ENVIRONMENTAL CONDITIONS ............................................................................................................. 18
2.1 OVERVIEW .................................................................................................................................................. 18
2.2 GEOGRAPHICAL EXTENTS ........................................................................................................................... 18
2.3 TOPOGRAPHY ............................................................................................................................................. 19
2.4 SOILS........................................................................................................................................................... 19
Sand-Gravelly Soils .............................................................................................................................................. 19
Silt-Clay Soils ....................................................................................................................................................... 20
Soil Veneer/Rock Outcrop ................................................................................................................................... 20
2.5 GEOLOGY .................................................................................................................................................... 20
2.6 GROUNDWATER ......................................................................................................................................... 22
2.7 SURFACE WATER ........................................................................................................................................ 23
2.8 VULNERABLE RESOURCES .......................................................................................................................... 24
Public Water Supply ............................................................................................................................................ 24
Private Wells ....................................................................................................................................................... 24
Impaired Streams ................................................................................................................................................ 26
Areas Susceptible to Historic Localized Flooding ................................................................................................ 26
Areas with Native Oak Trees or Woodlands ....................................................................................................... 28
2.9 KEY SITE SPECIFIC ENVIRONMENTAL CONDITIONS CONTROLLING OWTS DESIGN & CONSTRUCTION ....... 28
PART 3 LOCAL AGENCY REQUIREMENTS & RESPONSIBILITIES ......................................................................... 32
3.1 PROGRAM ADMINISTRATION & RECORD KEEPING .................................................................................... 32
3.2 LOCAL REGULATIONS, CODES & ORDINANCES ........................................................................................... 34
3.3 WATER QUALITY ASSESSMENT PROGRAM ................................................................................................. 35
3.4 REPORTING TO THE REGIONAL WATER BOARD .......................................................................................... 36
Annual Report ..................................................................................................................................................... 36
Five-Year Water Quality Assessment Report to Regional Water Board .............................................................. 36
3.5 PERMITTING ............................................................................................................................................... 37
3.6 VARIANCES & PROHIBITIONS ..................................................................................................................... 37
Variances............................................................................................................................................................. 37
Prohibitions ......................................................................................................................................................... 38
3.7 PROFESSIONAL, CONTRACTOR & MAINTENANCE PROVIDER QUALIFICATIONS ......................................... 39
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
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PART 4 OWTS REQUIREMENTS & PROCEDURES .............................................................................................. 41
4.1 PROJECTS REQUIRING PLAN REVIEW & FEASIBILITY REPORTS ................................................................... 41
4.2 DOCUMENTS & INFORMATION REQUIRED FOR OWTS PLAN REVIEW ........................................................ 42
Service Request Application ................................................................................................................................ 42
Feasibility Report ................................................................................................................................................ 43
Floor Plan ............................................................................................................................................................ 43
Grading Plan ....................................................................................................................................................... 43
Plot Plan .............................................................................................................................................................. 44
Cross Sectional View of the Dispersal Field or Seepage Pit ................................................................................. 46
Site Identification ................................................................................................................................................ 46
Additional Information Required Depending on the Project ............................................................................... 46
4.3 SETBACKS & OTHER CONSIDERATIONS ...................................................................................................... 47
Setbacks .............................................................................................................................................................. 47
General Project Requirements ............................................................................................................................ 48
4.4 SEPTIC TANK CAPACITY & REQUIREMENTS ................................................................................................ 49
Capacity of Septic Tanks ..................................................................................................................................... 49
Structural Requirements for Septic Tanks ........................................................................................................... 50
4.5 DISPERSAL METHODS FOR CONVENTIONAL OWTS .................................................................................... 51
General Dispersal System Requirements............................................................................................................. 51
Leach Bed ............................................................................................................................................................ 52
Leach Line............................................................................................................................................................ 52
Infiltrative Chamber ............................................................................................................................................ 52
Seepage Pit ......................................................................................................................................................... 53
Gravel-packed Pit ................................................................................................................................................ 53
4.6 FUTURE EXPANSION AREA REQUIREMENTS ............................................................................................... 53
4.7 PROCEDURES FOR DETERMINING DEPTH OF SUBSURFACE WATER ........................................................... 55
Known or Observed High Subsurface Water ....................................................................................................... 55
4.8 REQUIREMENTS APPLICABLE TO ALL PERCOLATION TESTING TYPES ......................................................... 56
4.9 PERCOLATION TESTING FOR LEACH LINES AND LEACH BED DISPERSAL SYSTEMS ...................................... 57
Requirements ...................................................................................................................................................... 57
Percolation Test Procedures for Leach Beds and Leach Lines. ............................................................................ 57
4.10 PERCOLATION TESTING FOR SEEPAGE PIT AND GRAVEL PACKED PIT DISPERSAL SYSTEMS ........................ 59
Requirements ...................................................................................................................................................... 59
Procedures .......................................................................................................................................................... 60
Calculation .......................................................................................................................................................... 61
4.11 ALTERNATIVE ONSITE WASTEWATER TREATMENT SYSTEMS ..................................................................... 62
Vertical Separation to Groundwater ................................................................................................................... 62
Horizontal Setback Distances for Alternative OWTS ........................................................................................... 63
Alternative OWTS Installation Requirements.................................................................................................... 635
Subsurface Drip Systems ..................................................................................................................................... 65
Use of Proprietary Alternative OWTS .................................................................................................................. 66
Supplemental Treatment Systems Maintenance Contract ................................................................................. 67
Alternative OWTS Deed Restriction .................................................................................................................... 67
Alternative OWTS Operating Permit ................................................................................................................... 67
4.12 LIMITATIONS ON SUB-DIVISIONS PROPOSING TO UTILIZE OWTS ............................................................... 67
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4.13 ONSITE WASTEWATER TREATMENT SYSTEMS IN DEGRADED BASINS………………………………………………..69
PART 5 REPAIR / REPLACEMENT OF EXISTING OWTS ...................................................................................... 69
5.1 EXISTING FUNCTIONING OWTS .................................................................................................................. 69
5.2 FAILED OWTS .............................................................................................................................................. 69
5.3 OWTS REPAIRS & UPGRADES...................................................................................................................... 70
5.4 EXISTING ONSITE OWTS EVALUATION / MODIFICATION ............................................................................ 70
5.5 OWTS ABANDONMENT STANDARDS .......................................................................................................... 71
PART 6 SPECIAL OWTS MANAGEMENT ISSUES ................................................................................................ 71
6.1 EDUCATION AND OUTREACH ..................................................................................................................... 71
Direct Staff Contact ............................................................................................................................................. 71
City of Atascadero Website ................................................................................................................................. 72
Stakeholder/Community Meetings ..................................................................................................................... 72
Ongoing Education .............................................................................................................................................. 72
6.2 ENFORCEMENT .......................................................................................................................................... 73
Failure to Obtain a Permit ................................................................................................................................... 74
Surface Effluent ................................................................................................................................................... 74
Inspection/Maintenance ..................................................................................................................................... 75
6.3 SEPTAGE MANAGEMENT ........................................................................................................................... 75
6.4 CESSPOOL DISCONTINUANCE AND PHASE-OUT ......................................................................................... 76
LIST OF TABLES
2.5.1 Active Faults Near Atascadero
4.3.1 Minimum Vertical Separation to Groundwater for Conventional OWTS Dispersal Systems
4.11.1 Minimum Vertical Separation to Groundwater for Alternative OWTS Dispersal Systems and
Required Wastewater Constituents Treated
4.11.2 Effluent Consituent Limitations for Supplemental Treatment Systems
4.12.1 Allowable Average Densities Per Subdivision
LIST OF EXHIBITS
1.2.1 Atascadero Mutual Water Company Service Area
1.4.1 City of Atascadero Service Area
1.6.1 Parcels Served by Sanitary Sewer (2017)
1.6.1 Parcels Served by OWTS (2017)
1.7.1 Potential Areas for Possible Future Sanitary Sewer System Expansion – Overview
1.7.2 – 1.7.6 Possible Future Sanitary Sewer System Expansion – Area Nos. 1-5
2.3.1 Average Parcel Topographic Slope
2.4.1 NRCS Soils Map
2.4.2 Generalized Soil Type Map
2.5.1 Geology Map
2.6.1 Parcels Overlying Atascadero Groundwater Sub-Basin
2.7.1 Parcels in Proximity to Surface Water Courses
2.8.1 Parcels in Proximity to Public Water Supply Wells
2.8.2 Private Water Well Location Map
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2.8.3 Parcels in Proximity to Pricate Water Wells
2.8.5 Areas of Potential Flood Risk
2.8.6 Parcels in Proximity to Potential Flood Risk
2.9.1 Soil Depth Map
2.9.2 Parcels in Proximity to Surface Water Bodies
2.9.3 Parcel Size Spatial Distribution
LIST OF APPENDICES
A SWRCB OWTS Policy
B Central Coast RWQCB Onsite Wastewater Management Plan Guidance
C OWTS Design / Construction Comparison Table
D Preliminary Cost Estimates for Potential Expansion of Sanitary Sewer Collection System
E OWTS Easement Requirements
F OWTS Setback Requirements
G OWTS Evaluation Form
H OWTS Septic Tank / Flow Design Criteria
I Alternative OWTS Soil Replacement Requirements
J Future OWTS Expansion Area Requirements
K OWTS Septic Tank Inspection Form
J OWTS Informational Handout
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DEFINITIONS
“303(d) list” means the same as “Impaired Water Bodies.”
“5:1 Slope” means 20% slope. It refers to horizontal run over rise, in this case 5 feet of horizontal
distance over 1 foot of vertical difference.
Alternative Onsite Wastewater Treatment System. Alternative onsite wastewater treatment
system is a type of OWTS that utilizes either supplemental treatment and/or a method of
wastewater dispersal other than a conventional leachfield, leach bed or seepage pit for the purpose
of producing a higher quality wastewater effluent and improved performance of and siting options
for effluent dispersal.
Aquifer. A body of rock or sediment that is sufficiently porous and permeable to store, transmit,
and yield significant or economic quantities of groundwater to wells and springs, as defined in
Bulletin 118, 2003 Update. For purposes of this LAMP, it is understood that this definition is limited
to alluvial aquifers
Basin plan. Basin plan means the same as “water quality control plan” as defined in Division 7
(commencing with Section 13000) of the California Water Code. Basin plans are adopted by each
Regional Water Quality Control Board, approved by the State Water Board and the Office of
Administrative Law, and identify surface water and groundwater bodies within each Region’s
boundaries and establish, for each, its respective beneficial uses and water quality objectives.
Bedrock. Bedrock means the rock, usually solid, that underlies soil or other unconsolidated, surficial
material.
Biological Oxygen Demand (BOD). BOD, measures the oxygen required for biochemical
degradation of organic and inorganic material. High BOD causes an increased biological demand
on downstream OWTS components and may shorten the life of the system.
California Environmental Data Exchange Network (CEDEN). California Environmental Data
Exchange Network is a website operated by the State Water Resource Control Board that serves as
a central location to find and share information about California’s water bodies, including streams,
lakes, rivers and the coastal ocean. www.ceden.org
Central Coast Regional Water Quality Control Board (Central Coast RWQCB). Central Coast RWQCB
means Region 3 of the Regional Water Quality Control Boards as designated by Water Code Section
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13200. Any reference to an action of the Regional Water Board in this LAMP also refers to an action
of its Executive Officer, including the conducting of public hearings, pursuant to any general or
specific delegation under Water Code Section 13223.
Cesspool. Cesspool means an excavation in the ground receiving domestic wastewater, designed
to retain the organic matter and solids, while allowing the liquids to seep into the soil. Cesspools
differ from seepage pits because cesspool systems are not preceded by a septic tank and are not
authorized under this LAMP. The term cesspool does not include pit-privies and out-houses which
are not regulated under this Policy.
Clay. Clay is a kind of soil particle; the term also refers to a type of soil texture. As a soil particle,
clay consists of individual rock or mineral particles in soils having diameters <0.002 mm. As a soil
texture, clay is the soil material that is comprised of 40 percent or more clay particles, not more
than 45 percent sand and not more than 40 percent silt particles using the USDA soil
classification system.
Cobbles. Cobbles mean rock fragments 76 mm or larger using the USDA soil classification
systems.
Cut Slope. A Cut Slope means any slope greater than 60% or a man-made excavation that exposes
the vertical soil profile.
Conventional OWTS. Conventional OWTS means an OWTS consisting of a septic tank with the
effluent discharging into a subsurface leachfield, leach bed, infiltrative chamber, seepage pit or
gravel-packed pit.
Day-lighting. Day-lighting within this LAMP refers to the horizontal distance from a subsurface
structure or leach field projected out to an adjacent slope. Within this LAMP, day-lighting does
not refer to wastewater effluent reaching the ground surface, which is referred to as “surfacing
effluent.”
Dispersal system. Dispersal system means a leachfield, seepage pit, mound, subsurface drip
field, evapotranspiration and infiltration bed, or other type of system for final wastewater
treatment and subsurface discharge.
Domestic wastewater. Domestic wastewater means wastewater with a measured strength less
than high-strength wastewater and is the type of wastewater normally discharged from, or similar
to, that discharged from plumbing fixtures, appliances and other household devices including, but
not limited to toilets, bathtubs, showers, laundry facilities, dishwashing facilities, and garbage
disposals. Domestic wastewater may include wastewater from commercial buildings such as office
buildings, retail stores, and some restaurants, or from industrial facilities where the domestic
wastewater is segregated from the industrial wastewater. Domestic wastewater may include
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incidental recreational vehicle (RV) holding tank dumping but does not include wastewater
consisting of a significant portion of RV holding tank wastewater such as at RV dump stations.
Domestic wastewater does not include wastewater from industrial processes.
Domestic well. Domestic well means a groundwater well that provides water for human
consumption and is not regulated by the California Water Board – Division of Drinking Water.
Drainageway. Drainageway means a natural or artificial channel that is not a watercourse as
defined by this LAMP. Examples of a drainageway include irrigation and drainage ditches that flow
only for hours or days following rainfall, grass-lined swales, concrete-lined canals, and storm water
runoff devices.
Dump Station. Dump Station means a facility intended to receive the discharge of wastewater
from a holding tank installed on a recreational vehicle. A dump station does not include a full hook-
up sewer connection similar to those used at a recreational vehicle park.
Dwelling Unit. Dwelling unit means a single unit providing complete independent living facilities
for one or more persons, including permanent provisions for living, sleeping, eating, cooking or
sanitation, conforming with the edition of the California Residential Code (Title 24) in place at the
time of construction.
Effective Depth. Effective depth means the depth of the useable, permeable layers of soil below
the bottom of the distribution pipe in a dispersal system.
Effluent. Effluent means sewage, water, or other liquid, partially or completely treated or in its
natural state, flowing out of a septic tank, supplemental treatment unit, dispersal system, or other
OWTS component.
Electronic Deliverable Format (EDF). EDF is a comprehensive data standard designed to facilitate
the transfer of electronic files between data producers and data users. The EDF may be used for
the production of hard copy reports, electronic data review, or data summaries,
Existing OWTS. Existing OWTS means an OWTS that was constructed and operating prior to the
effective date of this Policy, and OWTS for which an OWTS construction permit has been issued
prior to the effective date of this LAMP.
Fats, Oils and Grease (FOG). FOG measures biological lipids and mineral hydrocarbons. The
analytical test for FOG does not measure an absolute quantity, but is useful in making comparisons
of wastewater.
Gray Water. Gray water means untreated wastewater that has not been contaminated by any toilet
discharge, and has not been affected by infectious, contaminated, or unhealthy bodily wastes, and
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does not present a threat from contamination by unhealthful processing, manufacturing, or
operating wastes (Health and Safety Code section 17922.12). Gray water includes used water from
bathtubs, showers, bathroom wash basins, clothes washing machines and laundry tubs. Gray water
does not include waste water from kitchen sinks or dishwashers.
Gray Water System. Gray water system is a disposal system that disposes of gray water
subsurface and conforms with the latest edition of the California Plumbing Code.
Groundwater. Groundwater means water below the land surface that is at or above atmospheric
pressure and is located below the water table elevation within the saturated zone.
Groundwater Basin. Groundwater Basin refers to an “…alluvial aquifer or stacked series of alluvial
aquifers with reasonably well-defined boundaries in a lateral direction, based on features that
significantly impede groundwater flow, and a definable bottom…”, as defined in Title 23, Division 2,
Chapter 1.5, Subchapter 1, Article 2, Section 341(g)(1) of the California Code of Regulations, and
referenced in Bulletin 118, 2003 and 2016 Updates. Within the context of this LAMP, reference to
Groundwater Basin refers to the Paso Robles Groundwater Basin, as defined in Bulletin 118, 2003
Update and the Paso Robles Groundwater Management Plan.
Groundwater Basin Degredation. Groundwater Basin Degredation refers to a substantiated
decrease in groundwater quality, such that the trend line of measureable constituent(s) exceeds
specified limits for maximum concentration.
Groundwater Subbasin. Groundwater Subbasin refers to a portion of a Groundwater Basin
determined by geologic or hydrologic barriers, as defined in Bulletin 118, 2003 Update. Within the
context of this LAMP, reference to Groundwater Subbasin refers to the Atascadero Subbasin, as
defined in Bulletin 118, 2016 Update and the Paso Robles Groundwater Management Plan, as that
portion of the Paso Robles Formation basin west of the Rinconada fault.
Guesthouse. Guesthouse means the same as described in City of Atascadero Municipal Code and
is considered a detached bedroom(s) for purposes of sizing the OWTS.
Health Department. Health Department means the San Luis Obispo County Health Department.
High Strength Wastewater. High strength wastewater means wastewater having a 30-day
average concentration of biochemical oxygen demand (BOD) greater than 300 milligrams-per-
liter (mg/L) or of total suspended solids (TSS) greater than 330 mg/L or a fats, oil, and grease
(FOG) concentration greater than 100 mg/L prior to the septic tank or other OWTS treatment
component.
IAPMO. IAPMO means the International Association of Plumbing and Mechanical Officials
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Impaired water bodies. Impaired water bodies means those surface water bodies or segments thereof
that are identified on a list approved first by the State Water Board and then approved by US EPA
pursuant to Section 303(d) of the federal Clean Water Act.
Impervious layer or material. Impervious layer or material is characterized as having a percolation
rate slower than one hundred twenty (120) minutes per inch or having clay content of sixty (60)
percent or greater.
Infiltrative Area. Infiltrative area means the surface area of the sidewalls below the effluent
distribution pipe where the dispersal field media makes direct contact with the soil or permeable
rock. The surface area of the bottom of the dispersal system can be included in specific
circumstances.
Local Agency Management Program for Onsite Wastewater Treatment Systems (LAMP).
LAMP means this document, which conforms to all of the applicable Tier 2 criteria listed in the
OWTS Policy, including adherence to the prohibitions specified in Section 9.4 of the Policy.
Leach bed. A Leach Bed is equivalent to a leachfield except that multiple distribution pipes are
installed within a single excavation with a common underlying mat of gravel.
Leach field. Leach field means a system of trenches or beds filled with drain rock, or other
approved aggregate material, and overlain by a perforated pipe that distributes treated sewage
effluent for subsurface dispersal into the soil. A leachfield is also known as a “drainfield” or a “soil
absorption system”.
Local Agency. Local agency means any subdivision of state government that has responsibility for
permitting the installation of and regulating OWTS within its jurisdictional boundaries; typically a
county, city, or special district. Within the context of this LAMP, Local agency refers to the City of
Atascadero.
Major repair. Major repair means either: (1) for a dispersal system, repairs required for an OWTS
dispersal system due to surfacing wastewater effluent from the dispersal field and/or wastewater
backed up into plumbing fixtures because the dispersal system is not able to percolate the design flow
of wastewater associated with the structure served, or (2) for a septic tank, repairs required to the tank
for a compartment baffle failure or tank structural integrity failure such that either wastewater is
exfiltrating or groundwater is infiltrating.
Maximum Contaminant Level. Maximum Contaminant Level (MCL) refers to the highest level of a
contaminant that is allowed in drinking water. Primary MCL’s are set as close to the Public Health Goal
(PHG) as is economically and technologically feasible. Secondary MCLs are set to protect the odor,
taste and appearance of drinking water.
Mottling. Mottling means a soil condition that results from oxidizing or reducing minerals due to
soil moisture changes from saturated to unsaturated over time. Mottling is characterized by spots
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or blotches of different colors or shades of color (grays and reds) interspersed within the dominant
color as described by the USDA soil classification system. This soil condition can be indicative of
historic seasonal high groundwater level, but the lack of this condition may not demonstrate the
absence of groundwater.
Mound system. Mound system is a type of alternative OWTS dispersal system consisting of an
aboveground, covered sand bed with effluent leachfield elevated above original ground surface
inside, used to enhance soil treatment, dispersal, and absorption of effluent discharged from an
OWTS treatment unit such as a septic tank. Mound systems have a subsurface discharge.
NSF. NSF is an acronym for National Sanitation Foundation (also known as NSF International), a not
for profit, non-governmental organization that develops health and safety standards and performs
product certification.
New OWTS. New OWTS means an OWTS permitted after the effective date of this LAMP. A new
OWTS is any new system installed to serve a new structure or an elective rebuild of an existing
structure. For example, a rebuild of a fire damaged structure is not considered a New OWTS.
Nitrogen. Nitrogen is of concern due to its impact on groundwater and surface water. Nitrogen
acts as a potentially limiting nutrient for photosynthetic autotrophs in surface water and as a
potential health risk in groundwater. The principal forms of nitrogen found in wastewater are
organic nitrogen (Organic-N), ammonia nitrogen (NH3-N), ammonium nitrogen (NH4-N), nitrite
nitrogen (NO2-N), and nitrate nitrogen (NO3-N). These forms of nitrogen are expressed either
individually or as components of the following:
1. Total Kjeldahl Nitrogen (TKN), which is the sum of (Organic-N) + (NH3-N)
2. Total Inorganic Nitrogen (TIN), which is the sum of (NH3-N) + (NO2-N) + (NO3-N)
3. Total Nitrogen (TN), which is the sum of (TKN) + (NO2-N) + (NO3-N)
Oil/Grease interceptor means a passive interceptor that has a rate of flow exceeding 50 gallons-
per-minute and that is located outside a building. Oil/grease interceptors are used for separating
and collecting oil and grease from wastewater.
Onsite Wastewater Treatment System (OWTS). OWTS means individual wastewater disposal
systems, community collection and disposal systems, and alternative collection and disposal
systems that use subsurface disposal. The short form of the term may be singular or plural. OWTS
do not include gray water systems pursuant to Health and Safety Code Section 17922.12.
OWTS Policy. OWTS Policy is the Water Quality Control Policy for Siting, Design, Operation, and
Maintenance of Onsite Wastewater Treatment Systems as adopted by the State Water Resources
Control Board on June 19, 2012.
Pathogens. Pathogens mean disease-causing microorganisms. Their presence is indicated by
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sampling wastewater for coliform bacteria.
Perched Water. Perched water, which includes sheetwater, means subsurface drainage or
groundwater that flows in a relatively thin sheet upon an impervious or very slowly permeable
soil layer, such as clay.
Percolation test. Percolation test is a method of testing water absorption of the soil. The test is
conducted with clean water and test results can be used to establish the dispersal system design.
Percolation rate. Percolation rate means the speed at which water moves through soil, usually
reported in minutes per inch.
Permeable Rock. Permeable rock means decomposed granite, shale or other weathered bedrock
formations. For the purposes of this LAMP, permeable rock may be considered a viable substrate
to accommodate a dispersal system provided stabilized percolation rates and vertical separation
requirements as determined by this LAMP to groundwater, consolidated bedrock or another
impervious layer have been met.
Permit. Within the context of this LAMP, permit means a document issued by a local agency that
allows the installation and use of an OWTS, or waste discharge requirements or a waiver of waste
discharge requirements that authorizes discharges from an OWTS.
Person. Person means any individual, firm, association, organization, partnership, business trust,
corporation, company, State agency or department, or unit of local government who is, or that is,
subject to this LAMP or the OWTS Policy.
Privy. Privy means a structure (portable or fixed) and excavation used for the disposal of human
wastes without the aid of water or chemical toilets (portable or fixed) which are subsequently
pumped and disposed of in an approved facility.
Public Health Goal. Public Health Goal refers to the level of a contaminant in drinking water
below which there is no known or expected risk to health. PHGs are set by the California EPA.
Public water system. “Public water system” means a system for the provision of water for
human consumption through pipes or other constructed conveyances that has 15 or more
service connections or regularly serves at least 25 individuals daily at least 60 days out of the
year. (California Health and Safety Code Section 116275)Within the context of this LAMP, this
refers to the water system within the City of Atascadero owned and operated by the independent
Atascadero Mutual Water Company.
Public water well. A public water well is a ground water well serving a public water system. A spring
which is not subject to the California Surface Water Treatment Rule (SWTR), CCR, Title 22, sections
64650 through 64666 is a public well. Within the context of this LAMP, public water wells refer to the
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water wells within the City of Atascadero owned and operated by the independent Atascadero Mutual
Water Company.
Regional Water Board means any of the Regional Water Quality Control Boards designated by Water
Code Section 13200. Any reference to an action of the Regional Water Board in this Policy also refers to
an action of its Executive Officer, including the conducting of public hearings, pursuant to any general
or specific delegation under Water Code Section 13223. Within the context of this LAMP, Regional
Water Board generally refers to the Central Coast Regional Water Quality Control Board.
Repair. Repair means either: (1) for a dispersal system, repairs to an existing OWTS dispersal
system that are installed in a “like-for-like” configuration to maintain the design specifications and
location of the dispersal field; (2) for a septic tank, patching cracks that do not degrade the tank
structural integrity and do not allow wastewater to exfiltrate or allow groundwater to infiltrate the
tank.
Reserve Area. Reserve area means an accessible area that shall be available to accommodate a
minimum of one replacement dispersal system without utilization or disruption of the initial
installation(s).
Replacement OWTS means an OWTS that has its treatment capacity expanded, or its dispersal system
replaced or added onto, after the effective date of this Policy.
Reservoir. Reservoir means a pond, lake, basin or other space either natural or created in whole
or in part by the building of engineering structures, which is used for storage, regulation and
control of water, recreation, power, flood control or drinking. A detention pond designed to meter
runoff water during a storm event is not considered a reservoir.
Sand. Sand is a kind of soil particle; this term also refers to a type of soil texture. As a soil particle,
sand consists of individual rock or mineral particles in soils having diameters ranging from 0.05 to
2.0 millimeters. As a soil texture, sand is soil that is comprised of 85 percent or more sand
particles, with the percentage of silt plus 1.5 times the percentage of clay particles comprising
less than 15 percent.
Sanitary sewer. Sanitary sewer means a system for collecting residential or municipal
wastewater and directing the collected wastewater to a treatment works prior to dispersal.
Seepage pit. Seepage pit means a drilled or dug excavation, four to six feet in diameter and gravel
filled, that receives the effluent discharge from a septic tank or other OWTS treatment unit for
dispersal.
Septage. Septage means solid residue with low water content from septic tanks, privies, or
wastewater treatment facilities.
Septic tank. Septic tank means a watertight, covered receptacle designed for primary treatment
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of wastewater and constructed to:
1. Receive wastewater discharged from a building;
2. Separate settleable and floating solids from the liquid;
3. Digest organic matter by anaerobic bacterial action;
4. Store digested solids; and
5. Clarify wastewater for further treatment with final subsurface discharge.
Shallow Pressure-Distribution Trench. Shallow pressure-distribution trench is a type of alternative
OWTS dispersal field, similar to a conventional gravity leachfield except that it uses a pump and
small-diameter pressure piping to achieve broad, uniform distribution of wastewater in the shallow
soil zones for improved soil absorption and enhanced treatment of percolating effluent.
Silt. Silt is a kind of soil particle; this term also refers to a type of soil texture. As a soil particle, silt
consists of individual rock or mineral particles in soils having diameters ranging from between 0.05
and 0.002 mm. As a soil texture, silt is soil that is comprised as approximately 80 percent or more
silt particles and not more than 12 percent clay particles using the USDA soil classification system.
Site means the location of the OWTS and, where applicable, a reserve dispersal area capable of
disposing of 100% of the design flow from all sources the OWTS is intended to serve.
Site evaluation means an assessment of the characteristics of the site sufficient to determine its
suitability for an OWTS to meet the requirements of this Policy.
Soil. Soil means the naturally occurring body of porous mineral and organic materials on the land
surface, which is composed of unconsolidated materials, including sand-sized, silt-sized, and clay-
sized particles mixed with varying amounts of larger fragments and organic material. The various
combinations of particles differentiate specific soil textures identified in the soil textural triangle
developed by the United States Department of Agriculture (USDA) as found in Soil Survey Staff,
USDA; Soil Survey Manual, Handbook 18, U.S. Government Printing Office, Washington, DC, 1993,
p. 138. For the purposes of this LAMP, soil shall contain earthen material of particles smaller than
0.08 inches (2 mm) in size.
Soil Structure. Soil structure means the arrangement of primary soil particles into compound
particles, peds, or clusters that are separated by natural planes of weakness from adjoining
aggregates.
Soil Texture. Soil texture means the soil class that describes the relative amount of sand, clay, silt and
combinations thereof as defined by the classes of the soil textural triangle developed by the United
States Department of Agriculture.
State Water Board is the State Water Resources Control Board.
Subsurface drip dispersal. Subsurface drip dispersal is a type of alternative OWTS dispersal system
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consisting of small diameter flexible plastic tubing manufactured with emitters spaced uniformly
along its length that releases treated wastewater to the soil for final treatment and dispersal; the
drip field is designed and installed such that the drip tubing is installed in the shallow surface soils,
typically 8 to 12 inches below finished grade.
Supplemental Treatment System. Supplemental treatment system means any OWTS or component of
an OWTS, except a septic tank or dosing tank that performs additional wastewater treatment so that
the effluent meets a predetermined performance requirement prior to discharge of effluent into the
dispersal field.
Surface Water Ambient Monitoring Program (SWAMP). SWAMP is a comprehensive surface
water monitoring and assessment program managed by the State Water Resources Control
Board. https://www.waterboards.ca.gov/water_issues/programs/swamp/
TMDL is the acronym for "total maximum daily load." Section 303(d)(1) of the Clean Water Act requires
each State to establish a TMDL for each impaired water body to address the pollutant(s) causing the
impairment. In California, TMDLs are usually adopted as Basin Plan amendments and contain
implementation plans detailing how water quality standards will be attained.
Total Suspended Solids (TSS). TSS are a constituent of total solids. TSS is residue retained on a
filter after drying the sample and is a measure of the level of treatment being achieved.
United States Geological Survey (USGS). USGS is a scientific agency for natural sciences, including
earth science and biology and maintains topographic maps of blue-line streams.
Waste discharge requirement or “WDR” means an operation and discharge permit issued for the
discharge of waste pursuant to Section 13260 of the California Water Code.
Wastewater. Wastewater includes sewage, gray water, and any and all other contaminated
liquid waste substances associated with human habitation.
Water Quality Objectives. Water Quality Objectives are measurable constituent level limits, as
defined in the Central Coast Water Board Basin Plan, necessary for the reasonable protection of
beneficial uses and for the prevention of nuisance.
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PART 1 INTRODUCTION & BACKGROUND
1.1 INTRODUCTION
In California, the authority for the regulation of Onsite Wastewater Treatment Systems (OWTS) belongs
to the State Water Resources Control Board (SWRCB). The policies of the SRWCB are implemented locally
through nine regional water quality control boards (RWQCB). Historically, each regional board developed
“basin plans” that outlined water quality objectives in their respective jurisdictions as well as policies and
programs to achieve those objectives.
General guidelines for the siting, design, and construction of new OWTS were part of each basin plan.
While the regional boards retain primacy over large and some specialized systems, direct regulatory
authority for individual OWTS has been delegated to local agencies.
In June 2012, the SWRCB adopted the Water Quality Control Policy for Siting, Design, Operation and
Maintenance of Onsite Wastewater Treatment Systems, hereinafter referred to as the OWTS Policy. The
OWTS Policy became effective in May 2013 and for the first time, established a statewide, risk-based
tiered approach for the regulation and management of OWTS. A complete copy of the OWTS Policy is
included in Appendix A.
The SWRCB OWTS Policy provides a multi-tiered strategy for management of OWTS in California. This
document presents the proposed Local Agency Management Program (LAMP) pertaining to the oversight
of OWTS within the City.
It is the intent of the Atascadero City Council, in adopting this LAMP, to ensure that OWTS are constructed,
modified, repaired, abandoned, operated, maintained, inspected and serviced in a manner that prevents
environmental degradation and protects the health, safety and general welfare of the people of the City
of Atascadero.
The OWTS Policy provides a multi-tiered strategy for management of OWTS in California. Five tiers were
created:
Tier 0 – existing OWTS that are properly functioning.
Tier 1 – minimum standards for low risk new or replacements OWTS.
Tier 2 – allows customized management programs (“Local Agency Management Programs”) that
address conditions specific to the local jurisdiction.
Tier 3 – applies special, enhanced standards to OWTS located near a water body listed as
impaired pursuant to Section 303(d) of the Clean Water Act.
Tier 4 – applies to OWTS that require corrective action.
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The purpose of the LAMP is to allow the continued use of OWTS within the jurisdiction of the City as well
as to expand the local program to permit and regulate alternative OWTS while protecting water quality
and public health.
The LAMP is designed to protect groundwater sources and surface water bodies from contamination
through the proper design, placement, installation, maintenance, and assessment of individual OWTS.
This plan sets forth minimum standards for the treatment and ultimate disposal of sewage though the use
of OWTS in the City of Atascadero. The LAMP does not include the following which require individual
waste discharge authorization or a waiver of individual waste discharge requirements issued by the
RWQCB.
The City of Atascadero’s LAMP does not include the following:
• Any OWTS with projected wastewater flow of 10,000 gallons per day or more.
• Any OWTS that has above ground surface discharge.
• Any OWTS that receives high-strength wastewater, unless the waste stream is from a commercial
food service facility. “High-strength wastewater” means wastewater having a 30-day average
concentration of biochemical oxygen demand (BOD) greater than 300 milligramsper-liter (mg/L)
or of total suspended solids (TSS) greater than 330 mg/L or a fats, oil, and grease (FOG)
concentration greater than 100 mg/L prior to the septic tank or other OWTS treatment
component.
• Any OWTS used for winery production. (All wineries not connected to the municipal sewer
system shall apply separately to the Water Board under the General Winery WDR Order No. R3-
2017-0020.
• Any OWTS that receives high-strength wastewater from a commercial food service facility:
o with a BOD higher than 900 mg/l or
o that does not have a properly sized and functioning oil/grease interceptor.
• OWTS dedicated to receiving significant amounts of wastes dumped from RV holding tanks.
1.2 BACKGROUND
The City of Atascadero (the City) is a unique community both from a historical perspective and the
environmental setting within which it is situated. The area surrounding the City was originally home to
the Salinas and Chumash Indians. In the half century between 1769 and 1823, the Spanish Franciscans
established 21 missions along the California coast, including the nearby Mission’s San Miguel Archangel,
and San Luis Obispo de Tolosa. In 1821, Mexico won its independence from Spain, and California became
a Mexican province. Under Mexican rule, the land which includes what is now the City of Atascadero was
the 23,000-acre Rancho Atascadero. In 1848, California was ceded to the United States after the Mexican–
American War. In 1913, Edward Gardner Lewis, a successful magazine publisher from the East, assembled
a group of investors and acquired Rancho Atascadero and founded the Atascadero Colony in 1913 as a
planned colony. The entire Atascadero Colony was surveyed and subdivided in 1914 and shortly
thereafter, construction began on a system of roadways and a public water supply system. In 2017, with
over 29,000 residents, Atascadero is the third-largest city in San Luis Obispo County. Many of the very
principles that E.G. Lewis envisioned for his "utopian city" are ensured through the city's general plan,
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which includes preservation of open space, protection of trees and hillsides, and large lot sizes. In
conjunction with the formation of the Atascadero Colony, the Atascadero Mutual Water Company
(AMWC) was formed in 1913. The AMWC was deeded all water rights within its service area to hold in
trust for its shareholders (i.e. individual property owners). The AMWC service area comprises all land
within the City of Atascadero corporate boundaries. Exhibit 1.2.1 graphically depicts the AMWC service
area. As trustee, the AMWC has the authority and responsibility to manage these groundwater resources.
The AMWC's intent is to protect the groundwater resources of the shareholders and provide for the
equitable distribution of these resources. The AMWC allows the drilling and use of some private wells in
those areas where the wells are not likely to have significant impacts on the groundwater resources of
the AMWC. The AMWC prohibits the drilling and use of new wells in areas that overlie the Atascadero
Sub-basin, the alluvial deposits of the Salinas River, or other areas that could significantly impact the
quantity, quality, or recharge of groundwater.
1.3 STATE & LOCAL REQUIREMENTS
The California Water Code authorizes the SWRCB to regulate all discharges that could affect the quality of
the waters of the state. The SWRCB policies are implemented locally through nine regional water quality
control boards. The City of Atascadero lies within the jurisdiction of the Central Coast Regional Water
Quality Control board (Central Coast RWQCB).
Discharges are regulated through the use of Waste Discharge Requirements that act as discharge permits.
With regards to the regulation of wastewater in San Luis Obispo County, the Central Coast RWQCB issues
discharge permits to the municipalities and special districts that operate wastewater (sewage) treatment
plants in the county. In addition, they issue storm water permits to the incorporated cities and to the
County as well as permits for the use of recycled water.
The State’s regulatory authority extends to individual OWTS. Therefore, general guidelines for the siting,
design, and construction of new OWTS were part of each regional board’s basin plan. The SWRCB and the
regional boards recognized the advantages and efficiencies of regulation of such systems by local
agencies. Consequently, while the regional boards retained primacy over large and some specialized
systems, direct regulatory authority for individual OWTS has been delegated to individual agencies,
including the City of Atascadero, through a Memorandum of Understanding.
Under the tiered approach of the OWTS Policy, Tier 1 establishes minimum standards for low risk new or
replacement OWTS. Tier 2 allows local agencies to develop customized management programs that
address the conditions specific to that jurisdiction. These LAMPs must be approved by the appropriate
RWQCB. Tier 3 applies special, enhanced standards to both new and existing OWTS located near a water
body that has been listed as impaired due to nitrogen or pathogens pursuant to Section 303(d) of the
Clean Water Act. Once approved, the standards contained in an approved LAMP supersede the Tier 1
standards.
The City acknowledges that the Tier 1 standards afford an essential level of public health and water quality
protection. Accordingly, the City has enacted an OWTS Ordinance which includes a number of the Tier 1
standards including the site and soil evaluation requirements, effluent application rates and setbacks to
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groundwater. Additionally, the Tier 1 standards apply unless they are specifically addressed in the LAMP
or OWTS Ordinance.
There are however, certain elements in Tier 1 that would be problematic in the City. Examples would
include: limits on dispersal field depth, the 2½ acre minimum parcel size for new lots on which an OWTS
can be installed and the prohibition of the use of seepage pits. There are properties throughout the City
where these restrictions would preclude an individual from developing their property.
To reconcile these competing concerns, when conditions will not allow the use of a standard OWTS, the
OWTS Ordinance requires the use of supplemental treatment in conjunction with an operating permit to
remove the constituents of concern and provide an appropriate level of environmental protection.
Conditions of the operating permits include regular system inspection, maintenance and reporting.
Consequently, in those areas where the City’s requirements differs from Tier 1 in the OWTS Policy, the
required mitigation measures will result in an equal level of public health and groundwater protection.
In October 2016, the Atascadero City Council authorized the City of Atascadero to submit a letter to the
Central Coast RWQCB informing the Board of the City’s intent to develop a LAMP in lieu of implementing
Tier 1 standards. It is the intent of the City, in adopting this plan, to ensure that OWTS are constructed,
modified, repaired, abandoned, operated, maintained, inspected, and serviced in a manner that prevents
environmental degradation and protects the health, safety and general welfare of the people of the City.
This LAMP conforms to all of the applicable Tier 2 criteria listed in Section 9 of the OWTS Policy including
adherence to the “prohibitions” contained in Section 9.4. It is structured and organized in accordance
with the Onsite Wastewater Management Plan Guidance developed by the Central Coast RWQCB which
is included in Appendix B.
The actual standards for existing and new OWTS are specified in the OWTS Policy, the California Plumbing
Code, and in the City of Atascadero OWTS Ordinance. The OWTS Ordinance addresses conventional OWTS
(those systems using a standard tank and dispersal field as well as those utilizing supplemental treatment
or alternative systems such as mound and evapotranspiration systems).
OWTS, including conventional systems, require routine maintenance in order to ensure that they function
properly and to extend the life of the system. While this LAMP does not require mandatory maintenance
for conventional systems, operating permits with regular maintenance and reporting conditions, are
required for all other types of systems.
It is the intent of the City, as the Administrative Authority, to regulate all domestic waste flows up to peak
flows of 10,000 gallons per day, the maximum allowed under the state regulations.
While every effort was made to make this a comprehensive plan, it is likely that it will be necessary to
modify it in the future for several reasons. Section 9.3.3 of the OWTS Policy requires that a jurisdiction
complete an evaluation of its monitoring program every five years to determine if water quality is being
impacted by OWTS and whether modifications must be made to its LAMP to address any identified water
quality impacts. In addition, modifications or revisions will be needed as technology, conditions and
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experience change over time. When it has been determined changes are necessary, those changes will be
made after consultation with the Central Coast RWQCB and if changes are substantive, the proposed
modifications to the LAMP will be brought before the Atascadero City Council for approval.
1.4 GEOGRAPHIC AREA
The City of Atascadero contains approximately 26.1 square miles of land within its corporate boundaries.
In addition to this land area, the City adopted a comprehensive General Plan update in 2002. As part of
that process, the General Plan designated Eagle Ranch as “Development Area 11” and set forth policies
which contemplate annexation of the ranch. Following adoption of the General Plan, the San Luis Obispo
Local Agency Formation Commission (LAFCO) adjusted the City of Atascadero’s Sphere of Influence to
include Eagle Ranch, signifying that the ranch is ultimately expected to be annexed into the Atascadero
city limits within the next 20 years. In 2011, the San Luis Obispo LAFCO reaffirmed the City of Atascadero’s
Sphere of Influence. The Eagle Ranch property contains approximately 5.4 square miles, which results in
the area of the City of Atascadero’s Sphere of Influence to be approximately 31.5 square miles. For the
purposes of this LAMP, the proposed development associated with Eagle Ranch is included. In 2017, there
were approximately 12,220 individual property parcels within the City of Atascadero corporate limits and
an additional 587 parcels planned in the Eagle Ranch area to be annexed in the future. A location map
which graphically depicts the Atascadero Sphere of Influence is included as Exhibit 1.4.1.
The City of Atascadero Sphere of Influence is situated between the Santa Lucia Mountains to the west and
the Salinas River to the east. There are significant variations in topography within the region, with
elevations ranging from 2436 feet to 792 feet AMSL. In many areas, most notably within the western
portions of the community, the ground slopes are steep, often in excess of 30%. Soils in the area include
both the presence of fine-grained clayey & silty soils and coarse-grained sandy to gravelly soils. Soil depths
are shallow to absent in some of the rugged, mountainous areas in the western portions of the LAMP
area, as well as in the Spaghetti Hill, Chalk Mountain, and Pine Mountain areas which are located within
the eastern fringe of the area. The natural land cover of the regional landscape is predominately oak
woodland and oak savanna, with riparian zones within in the drainages and creeks. Surface water drainage
is generally from west to east, with the major creeks being Atascadero Creek, Graves Creek, Paloma Creek,
and Eagle Creek. Each of these creeks is fed by minor unnamed tributaries with their individual
watersheds. All surface water drainage features within the LAMP area ultimately discharge into the Salinas
River. The only significant groundwater basin sources that are present beneath the City of Atascadero
Sphere of Influence are the two distinct yet interrelated groundwater sources: the Salinas River Underflow
and the Atascadero Sub-basin of the Paso Robles Groundwater Basin. These groundwater supplies are
each located along the eastern fringe of the LAMP area. A more detailed discussion of the environmental
setting of the LAMP area is presented in Part 2.
1.5 OVERVIEW OF EXISTING ONSITE WASTEWATER TREATMENT SYSTEMS
Prior to the adoption of the LAMP and the new OWTS Ordinance, onsite sewage disposal systems which
exist within the corporate boundaries of the City of Atascadero are regulated by the City. The City of
Atascadero regulations for onsite sewage disposal systems were contained in Atascadero Municipal Code
Section 8‐6.102, which sets forth standards for the installation of new, replacement, or enlarged septic
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OWTS. These regulations have historically set forth specific requirements related to (a) permitting and
inspection of onsite systems; (b) septic tank design and construction; (c) drywell and disposal field
requirements; and (c) servicing, inspection, reporting and upgrade requirements. Standards pertaining to
system sizing and construction are contained in the California (Uniform) Plumbing Code. Additional
requirements for onsite systems in the City have been adopted as part of Community Plans or as project-
specific mitigation measures or conditions applied to development proposals lying within a designated
Special Problem Areas of the City.
Historically, City of Atascadero septic system requirements provided for use of conventional systems
including septic tanks for treatment and absorption trenches or seepage pits (dry wells) for disposal.
Absorption trenches have traditionally been the preferred method of disposal with seepage pits being
permissible only where the use of absorption trenches is infeasible. There are only a small number of
"alternative" systems in the City. These alternative systems provide additional treatment (beyond the
septic tank) or different methods of disposal (e.g. mounds, or pressure-dosing absorption trenches) are
designed to overcome specific soil or groundwater constraints. Design requirements for these systems
have historically been established on a “case by case” basis, based on the City review of engineering
documentation prepared by the permittee. The City required the permittee to address such factors as (a)
soil characteristics and depth; (b) percolation rates; (c) vertical separation to groundwater; (d) maximum
ground slope; (e) setback distances to wells and water features; (f) system sizing; and (g) reserve area for
future absorption trench replacement/expansion.
Older, non-conforming OWTS are present in several areas within the City of Atascadero Sphere of
Influence. Many of the properties are small (<1/2 acre in size), with OWTS constructed prior to the
modern codes. Some of these systems may be subject to failure in the future, and repairs/replacement
tend to be very challenging on these properties. Non-conformance with adopted setback requirements
(e.g. from structures, water features, cut banks, and sharp changes in slope, etc.) are also common. This
LAMP includes provisions for addressing the older, non-conforming OWTS, in subsequent sections of this
document.
For informational purposes, a comparison table was created to illustrate the principal differences
between the OWTS design and construction requirements, which were required under Atascadero
Municipal Code Section 8-6.102, and the new OWTS requirements, which are required under the provision
of this LAMP and the new OWTS Ordinance. The pre/post-LAMP comparison table is included in Appendix
C.
1.6 EXISTING MUNICIPAL SANITARY SEWER COLLECTION SYSTEM
The City of Atascadero serves a population of over 29,000 residents. Land uses include residential, office,
commercial, and light industrial developments. Sanitary sewer services are provided to approximately
45% of the residents and to a majority of the businesses within the City limits. Privately owned and
maintained OWTS are utilized by the remainder of the City. Of the more than 12,000 parcels within the
City of Atascadero corporate boundaries, approximately 5,360 parcels are currently connected to the
municipal sanitary sewer collection system. Exhibit 1.6.1 depicts parcels currently serviced by the sewer
systems and Exhibit 1.6.2 depicts those serviced by OWTS.
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The existing municipal sewer collection system consists of more than 303,600 lineal feet of laterals,
mains, trunks, and 44,500 feet of force mains, ranging in size from 4 to 24 inches in diameter. A series of
gravity collection system mains and 12 lift stations pump directly to the City-owned water reclamation
facility.
The water reclamation facility (WRF) is located east of the Chalk Mountain Golf Course. Groundwater
reclaimed from below the facility’s infiltration ponds is used for fairway irrigation. The WRF has a design
flow of 1.4 MGD and consists of an aerobic, facultative polishing lagoon, and six percolation ponds. In
addition, the WRF receives the final effluent discharged by the Atascadero State Hospital’s wastewater
treatment plant to the sixth and final percolation pond. The WRF also produces Class B biosolids.
Operations, maintenance, and environmental compliance staff ensure that the WRF is operated and
maintained in the most efficient manner possible and complies with all regulatory requirements.
A map depicting the location and size of the primary components of the Atascadero municipal sanitary
sewer collection system is included as Exhibit 1.6.3.
1.7 AREAS OF POTENTIAL EXPANSION OF THE EXISTING SANITARY SEWER
COLLECTION SYSTEM
The City of Atascadero has undertaken a preliminary study to identify those areas within its service area
that could potentially be served in the future with an expansion of the existing municipal sanitary sewer
collection system. Criteria considered in this study included the following:
o Proximity to existing sanitary sewer infrastructure.
o Number and size of parcels that could be serviced with the expanded infrastructure.
o The presence of existing rights-of-way and / or utility easements.
o The feasibility of gravity service vs service via force mains and lift stations.
o Estimated costs of system expansion vs probable benefits.
o Capacity of the existing water reclamation facility (WRF) to accommodate the additional
loading.
Based on the results of the subject study, the City of Atascadero identified 1,711 parcels which are
currently not served by the existing sanitary sewer collection system, which could potentially be served
through an expansion of the system. Each area’s location is graphically depicted in Exhibit 1.7.1 – 1.7.6. A
summary of the project costs for expansion of the existing sanitary sewer collection system for each of
these areas in included in Appendix D. The costs summarized are preliminary and based on a conceptual
level design effort.
1.8 ORGANIZATION OF THIS LAMP
This LAMP aims to illustrate the diversity of hydrogeologic conditions within the City of Atascadero and
create a comprehensive policy that protects groundwater and surface water resources from both new
and existing OWTS. Part 2 of this LAMP documents the results of an in-depth study on the geology, soil
conditions, and ground/surface water resources within the LAMP area. Part 3 lays out the local program
administration structure for the LAMP. Part 4 establishes code requirements for new OWTS and Part 5
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establishes requirements for the repair and replacement of existing systems. Finally, Part 6 deals with
education, outreach, and enforcement for all OWTS policies.
PART 2 ENVIRONMENTAL CONDITIONS
2.1 OVERVIEW
The City of Atascadero is unique not only in its founding, but also in the wide diversity of environmental
conditions. While the geographical extents make it the largest city in the San Luis Obispo County, it is the
topography that creates great variety among the City’s parcels. The City of Atascadero LAMP area has
over sixty soil types, creating a wide array of soil characteristics. From a hydrologic perspective, the LAMP
area is generally lacking in any significant groundwater resources, with the exception of the eastern fringe
which is underlain by the Atascadero Sub-basin of the Paso Robles Groundwater Basin and alluvial sub-
flow of the Salinas River. The Rinconada Fault defines a distinct boundary between the groundwater
supplies and the majority of the LAMP area.
The City’s environmental diversity makes it an ideal candidate for a LAMP where a localized approach can
better address unique conditions of the area and the most appropriate approach to OWTS permitting and
management.
2.2 GEOGRAPHICAL EXTENTS
The City of Atascadero is geographically the largest city in the San Luis Obispo - Atascadero - Paso Robles
metropolitan area. With an area of 26.1 sq. mi, the Atascadero Sphere of Influence comprises 98.13% land
area and 1.87% surface water. Only 9% of the LAMP area overlies the Atascadero Sub-basin of the Paso
Robles Groundwater Basin.
The City is situated in the southern section of the Salinas River Valley, bordered by hills and canyons with
open rolling hills surrounding the City center. The City is bordered in the west by the rugged ridges of the
Santa Lucia Coastal Range, in the east by the low hills of the La Panza and Temblor range, and in the north
by the low hills and flat terraces of the Diablo Range. The highest elevations are in the Santa Lucia Coastal
Range, where peaks can reach 2,000 to 3,400 feet AMSL.
The area has a Mediterranean climate with a wet season from October to April and a dry summer season
with low humidity. Rainfall numbers vary significantly across the City, generally increasing in relation to
elevation. For simplicity, the City utilizes available San Luis Obispo County data, with the entirely of the
City limits averaging a yearly rainfall total of greater than 20 inches. In the winter, the average high
temperatures range from the 50s to the 60s, with lows in the 30s. In the summer, the average daily highs
are in the 90s, with some days reaching into the 100s. Summertime lows are typically in the 60s and 70s.
The area comprising the City of Atascadero contains over twelve thousand parcels of land which range
from extremely small municipal right-of-way properties to the large state-owned Atascadero State
Hospital property. This variance in city-owned parcel size is also reflected in the diversity of residential
parcel size. Individual residential parcels range in size from less than half an acre in the urban township to
over fifty acres in the rural residential areas.
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2.3 TOPOGRAPHY
The Santa Lucia Range is a dominant topographic feature which extends almost the entire length of the
western portion of San Luis Obispo County. In the northern portion of the County, the Santa Lucia Range
rises sharply up from the Pacific Ocean. The City of Atascadero is located on the leeward side of this
mountain range in the north central part of the County.
Topographically, the LAMP area can be sub-divided into the western and eastern regions. The border
between these two regions generally follows a line parallel to and west of the US 101 corridor. The
western region is bounded on the west side by the rugged peaks of the Santa Lucia mountain range. The
eastern region is bounded on the east by the Salinas River.
Ground slopes are generally steeper in the western region, with the majority of the parcels exhibiting
slopes greater than 20% and many exceeding 30%. The land use in the western region is primarily rural
residential, with very limited access to the municipal sanitary sewer system.
As the Santa Lucia Range descends to the east, it flattens into rolling hills with the Salinas River, which
forms the eastern border of the LAMP area. The eastern region of the City is generally level, although
there are localized areas with steep terrain, including the Chalk Mountain, Pine Mountain, and Spaghetti
Hill areas.
The majority of parcels in this region have ground slopes which range from near level to approximately
20%. Very few parcels in this area have ground slopes that exceed 30%. The parcels with ground slopes
exceeding 30% are located primarily in the Pine Mountain and Chalk Mountain areas, with a few in the
Spaghetti Hill area. In these areas, there are approximately 537 lots that have at least a portion of the
individual parcel that has an average ground slope that exceeds 30% although there has been no OWTS
that has been constructed on the steeper (i.e. >30% slope) areas of these parcels.. A graphical depiction
of the average ground slope for all parcels in the LAMP area is included as Exhibit 2.3.1.
2.4 SOILS
Based on a review of the available soil mapping data, it was determined that there are sixty-one different
soils types within the City of Atascadero LAMP area. For the purposes of this LAMP, the soil formations
present were categorized into three general soil types: Sand-Gravelly Soils, Fine Silty Clay Soils, and Soil
Veneer/Rock Outcrop. A graphical depiction of the soils mapping, which was prepared by the USDA
Natural Resources Conservation Service (NRCS), is included as Exhibit 2.4.1. A generalized soils map for
the LAMP area is also included as Exhibit 2.4.2.
Sand-Gravelly Soils
This soil grouping consists of sands, sandy-loams, loams, loamy-sands, sandy-gravels, and gravelly soils.
These soil formations are typically located within the valley floors and floodplains. Approximately 43% of
parcels within the LAMP area are underlain by sandy-gravelly soils. These parcels generally have slopes
which range from near level to 15%, although in some areas exceeds 30%. These soils are typically
moderately well-drained and are generally the most conducive for supporting conventional OWTS
absorption trenches. In those areas where this soil type exists, the primary condition affecting OWTS
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design is soil depth. Soil depth to bedrock is variable from parcel to parcel and in some cases can be less
than 20 inches.
Silt-Clay Soils
This soil grouping consists of silt and clay soils, which are mainly located in the southwest and western
region of the LAMP area. The rural mountainous areas are dominated by this soil type, which are a result
of the weathering of underlying shale bedrock. There are approximately 9700 parcels that have silty
and/or clayey soils. These regions have slopes that range from 15-25%, with many areas exceeding 30%.
Silty-clay soils are moderate to poorly drained and typically have slower percolation rates when compared
to the coarser-grained sandy and gravelly soils. An important characteristic of this soil type is its shrink-
swell potential—as water penetrates these soils, it will swell and expand. The shrink-swell characteristic,
however, can vary widely by depth and distance, depending on the relative amount and type of clay. While
not all expansive soils have the same swell potential, the soil types with the highest shrink-swell potential
are located mainly in the Arbuckle-San Ysidro complex, Arbuckle-Positas complex, and Rincon clay loam.
Soil Veneer/Rock Outcrop
A soil veneer is a geomorphic formation in which rock fragments (clasts) of gravel or cobble size form a
thin cover over a surface or hillslope. Rock veneers are typically a few inches to several feet thick and may
partially or fully cover the ground surface. The presence of a thin soil veneer or outcropping bedrock on a
parcel will generally preclude the installation of a conventional OWTS. One exception may be those areas
where the bedrock is highly fractured and there is no groundwater or potential pathways to a surface
water feature present. Based on NRCS data, approximately 23% of the LAMP area is underlain by either a
thin soil veneer or exhibits outcropping bedrock. These parcels are also commonly characterized by steep
topographic slopes, with some slopes steeper than 75%. The majority of these parcels are located within
the western region of the LAMP area.
2.5 GEOLOGY
The City of Atascadero lies within the Salinas Valley, in the Coast Range Geomorphic Province of
California. The Coast Range Province is divided into two major blocks: the Salinian block and the Coastal
block. The City lies within the Salinian block, which consists of a crystalline basement complex of plutonic
and metamorphic blocks. The basement rock units are overlain by Miocene to early Pleistocene‐age
sedimentary rocks and surficial deposits. The Salinian block is separated from the Coastal block to the
west by the Nacimiento Fault zone and is bounded to the east by the San Andreas Fault. The Rinconada
Fault trends through the northern part of the central region of the block.
Mapped lateral faults in the vicinity of Atascadero include the potentially active Rinconada Fault and the
Nacimiento fault zone. The Rinconada Fault (and associated Jolon Fault) is mapped east of the Salinas
River trending northwest. The 6‐mile‐wide Nacimiento fault zone (trending northwest in the Santa Lucia
Range southwest of the City) is classified as inactive but appears to coincide with an historic earthquake
epicenter. A subsurface thrust fault (Black Mountain) is believed to lie a few miles east of the City. The
closest active faults nearest to Atascadero are summarized in Table 2.5.1 below.
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Table 2.5.1 Active Faults near Atascadero
The quaternary deposits, which are generally associated with the Salinas River, consist of historic to late
Holocene alluvial flood plain and channel deposits. These deposits consist of very young alluvial gravel,
cobbles, boulders, sand, silt, and clay. Young surficial deposits of unconsolidated sand, silt, and clay-
bearing alluvium are deposited on flood plains and valley floors. Old surficial deposits date from late to
middle Pleistocene and fluvial sediments are preserved above active flood plains and channels. These
units consist of interfingering beds and lenses of weakly-consolidated gravel, sands, silt, and clay. Terrace
surfaces, which are preserved along the Salinas River, Atascadero Creek and other drainages, are slightly
dissected and capped by moderate to well-developed pedogenic soils.
East of the Rinconada Fault line there are Tertiary rock formations. First is the Monterey Formation of the
upper to middle Miocene period which consists of the upper siliceous member of light gray and tan
rhythmically-bedded pocelinite, opaline chert, mudstone shale, siltstone, diatomite, and tuff. This unit
also includes white to light gray arkosic and locally pebble sandstone. Second is the Santa Margarita
Formation of the upper Miocene which consists of white, weakly-consolidated, coarse arkosic sandstone
and includes interbedded mudstone, siltstone, and diatomite. Resistant shell beds containing pectin and
oyster shells are locally present. Third is the Paso Robles Formation, which consists of poorly-sorted
conglomerate lenses set in a sandy and muddy matrix. Clasts range from sand-sized to boulders and
consist primarily of Monterey debris, including siliceous shale, chert, porcelinite, calcareous sandstone,
and dolomite.
West of the Rinconada Fault lies the Great Valley Sequence, which consists of the Atascadero and Toro
Formations of the Cretaceous to Jurassic period. The Atascadero Formation consists of thin to thick-
bedded turbidite sandstones with interbedded siltstone, mudstone, and conglomerate. There are four
subunits of the Atascadero Formation, which all consist of sandstone, siltstone, and mudstones, but differ
in bedding type and mineral composition. The Toro Formation consists of a thin-bedded, micaceous shale,
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interbedded with thin sandstone beds. The sandstone is rare, occurring in beds up to five meters thick
and containing calcareous lenses and concretions.
A geologic map of the LAMP area is included as Exhibit 2.5.1
2.6 GROUNDWATER
The vast majority of the Atascadero LAMP area does not overlay a groundwater basin, as defined by the
California Department of Water Resources (DWR) in Bulletin 118. The only designated groundwater basin
that is present within the LAMP area is the Atascadero Sub-basin of the Paso Robles Groundwater Basin.
The Atascadero Sub-basin is located to the east of the LAMP area and only the eastern fringe of the area
extends over the western boundary of the basin. Less than 9% of the 1,451 acres which comprise the
LAMP area overly the Atascadero Sub-basin. The portion of the area which does overly the Sub-basin
contains 621 parcels. Of these 621 parcels, 163 are currently served, or have access to, the City sanitary
sewer collection system. This basin is hydraulically connected to the overlying Salinas River Underflow
system which has been partially adjudicated. The locations of parcels overlying the Atascadero Sub-basin
are depicted in Exhibit 2.6.1.
The Atascadero Mutual Water Company (AMWC) is the exclusive water purveyor within the LAMP area
and provides potable water to all parcels. The AMWC is one of the largest retail mutual water companies
in the state and is responsible for meeting the water requirements of more than 30,000 people, with over
10,000 service connections. Since its formation in 1913, the AMWC has provided water for domestic and
irrigation purposes at cost to its shareholders. It is comprised of approximately 250 miles of pipeline
ranging in size from 4 inches to 24 inches and 9 storage tanks that range in size from 120,000 gallons to
4.8 million gallons. There are 17 active wells, 8 booster stations, 5 treatment buildings, and 20 pressure-
reducing stations located throughout the system. In addition, there are over 10,000 customer service
connections, 1,900 valves, and 1,700 fire hydrants. Elevations in the system vary from 800 feet at the well
fields along the Salinas River to 1,916 feet at the tank located in Summit Hills.
The AMWC obtains all of its water from two distinct yet interrelated groundwater sources: the Salinas
River Underflow and the Atascadero Sub-basin of the Paso Robles Groundwater Basin. Water from these
sources resides in the tiny spaces between sands and gravels until it is pumped to the surface by the
AMWC's wells. These sands and gravels act as natural filters, resulting in water that is clean and clear.
Wells which are perforated in the Salinas River Alluvium are typically less than 100 feet in total depth with
10 to 30 feet of well screens. Groundwater well production from these well generally ranges from less
than 100 up to 700 gallons per minute. Wells which are perforated in the Atascadero Sub-basin are
typically 150 to 600 feet in total depth with well screens ranging from 100 to 300 feet in length.
Groundwater well production from these wells generally ranges from 100 to 800 gallons per minute.
The Atascadero Sub-basin is located in the western portion of the Paso Robles Groundwater Basin and is
approximately 14,577 acres, about 3% of the total Paso Robles Basin. At the eastern boundary of the
Atascadero Sub-basin is the Rinconada Fault, which separates the Atascadero Sub-basin from the Paso
Robles Basin. The Rinconada Fault displaces the Paso Robles formation, and thus the hydraulic connection
between the aquifer across the Rinconada Fault is sufficiently restricted to deem the classification of the
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Atascadero Sub-basin. The northern boundary of the Atascadero Sub-basin is approximately the southern
end of the City of Paso Robles and the southern sub-basin boundary is located just south of the community
of Garden Farms.
Groundwater flows from areas of higher elevations to areas of lower elevations. The southern portion of
the Atascadero Sub-basin is 800 -1000 feet in elevation and the northern portion of the Sub-basin is 600
– 800 feet in elevation. Thus, the Salinas River flows north roughly paralleling the Highway 101. Outflow
through the sub-basin (primarily surface flow and Salinas River underflow) enters the Estrella Sub-area of
the Paso Robles Basin near the City of Paso Robles.
Fed by several creeks within the watershed, the Salinas River is the primary recharge source of the alluvial
aquifer of the Atascadero Sub-basin. This alluvial aquifer in turn recharges the deep water basin of the
Paso Robles Formation.
The Nacimiento Water Project (NWP) is the other source of recharge for the alluvial and deep water
aquifers. The AMWC discharges approximately 2,000 acre feet per year of water into a 1.6 acre recharge
basin over a 4-6 month period in summer/fall. Existing wells downstream from this discharge area draw a
blend of recharged surface water and groundwater for AMWC stakeholders.
2.7 SURFACE WATER
The primary surface water feature within the Atascadero LAMP area is the Salinas River. The Salinas River
drains a large watershed with a number of distinct tributaries. Although it is considered a single hydrologic
unit, geographic, political, land use, and groundwater divisions facilitate discussion of the Salinas River
watershed in terms of an upper and a lower watershed. The upper watershed begins at the headwaters
of the Salinas River in the La Panza Range southeast of Santa Margarita Lake in San Luis Obispo County
and flows to the narrows area near Bradley, just inside Monterey County. Within the LAMP area, the
Salinas River forms the eastern boundary. The Salinas River is an extremely important resource to the City
because, among other things, the river is an important source of recharge to the Atascadero Sub-Basin
and the Salinas River sub-flow groundwater supplies.
All regions in the LAMP area are located to the west of the Salinas River and are within one of three
contributory watersheds. These include the Paloma Creek, Atascadero Creek, and the Graves Creek
watersheds. Each of these creeks is fed by numerous other small tributaries. These drainage basins rise
to a maximum elevation of approximately 2,800 feet above mean sea level with steep topograp hy
categorizing much of the western portion of the watersheds. The watersheds contain a mix of urban and
rural residential land uses as well as agricultural land uses. A portion of the Los Padres National Forest is
also contained within the watershed along the western boundary.
Although there are very few parcels in direct proximity to the Salinas River, there is a hydraulic connection
between the main creeks and their contributing smaller tributaries with the Salinas River. This means that
anything that impacts the surface water quality within the Paloma Creek, Atascadero Creek, and Graves
Creek watersheds, can potentially impact the surface water quality of the Salinas River and subsequently
the underlying groundwater quality. For this reason, the City will require special requirements for OTWS
that are located within 100-ft of a surface watercourse. There are 1,223 parcels with OWTS located within
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100-ft of an existing surface watercourse. A graphical depiction of these parcels in included at Exhibit
2.7.1.
2.8 VULNERABLE RESOURCES
Public Water Supply
The AMWC is the only water purveyor that serves all parcels within the LAMP area. As described
previously in this document, sixteen of the AMWC’s seventeen production wells extract water from the
Salinas River alluvium and the deeper sub-basin formation. The location of these public water supply wells
are concentrated along a narrow band within the extreme eastern fringe of the LAMP area. In addition to
these sixteen wells along the Salinas River, the AMWC also operates a single, isolated public water supply
well which is located in the extreme western limits of the LAMP area. This isolated well produces
groundwater from the fractured bedrock of the Monterey shale formation.
The underflow of the Salinas River alluvium layer serves as a filter and shallow wells extract water viable
for community consumption. Wells tapping the Salinas River alluvial aquifer tend to be less than 100 feet
deep. The Salinas River alluvial aquifer is the primary source of recharge to the Paso Robles Formation.
About 73% of the water consumption in the AMWC is for residential use. The remaining water usage is
related to commercial and other non-residential use. The average daily water use for each resident for
the month of February 2017 was 51 gallons. The total water use for 2016 for the City of Atascadero was
approximately 1.47 billion gallons or 4511 acre-feet/year.
In the summer of 2012, the Nacimiento Pipeline began delivering surface water to the AMWC (up to 2,000
acre-feet per year) to offset the municipal groundwater pumping. The AMWC has contracted 2,000 AFY,
which will significantly improve its ability to meet the current and future water needs of its shareholders.
Given that the location of all existing public water supply wells within the LAMP area are located at the
extreme fringe of the area, there is very little risk of direct degradation of the public drinking water
supplies from either existing or future OWTS. This fact is supported by testing data which has been
accumulated by the AMWC over a period of approximately 100 years, which confirms that there has never
been any evidence of degradation in groundwater quality from sources associated with OWTS. IN an effort
to provided continued protection of the public drinking water sources, the AMWC has delineated
Wellhead Protected Areas (WHPA) for each of its production wells and diligently strives to ensure that no
activity is allowed within these areas that could result in adverse groundwater impacts. With regard to
OWTS proximity to the existing public water supplies, there are 39 parcels with OWTS located within 300
feet of a public water supply well.
Exhibit 2.8.1 graphically depicts the location of the AMWC service area and all public water supply wells
in Atascadero.
Private Wells
Under the covenants created when the original Atascadero Colony was established in 1913, a
commitment was made by the AMWC to provide a water supply to all parcels within the City of
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Atascadero. Therefore, under typical conditions, there is no incentive for a private property owner within
the LAMP area to construct a private well. This lack of incentive to construct private wells is further
reinforced by the hydrogeologic conditions within the vast majority of the LAMP area, which is not
underlain by a designated groundwater supply. The combined consequences of a lack of available
groundwater resource and a readily available water supply from the AMWC has resulted in the presence
of very few private water wells within the LAMP area.
Although all parcels within the LAMP area have access to municipal water service, the AMWC does allow
the drilling and use of some private wells in those areas where the wells are not likely to have significant
impacts on the groundwater resources of the AMWC. The AMWC prohibits the drilling and use of new
wells in areas that overlay the Atascadero Sub-basin, the alluvial deposits of the Salinas River, or other
areas that could significantly impact the quantity, quality, or recharge of groundwater. The water quality
from private (non-commercial) wells is not regulated or monitored by any outside agency or company. It
is the responsibility of the private well owner to ensure that their well water is safe. According to the
Environmental Health Services (EHS) of San Luis Obispo County, there were 69 domestic private well
permits approved within the Atascadero city limits. In addition, there were 41 private irrigation well
permits approved within the City limits of Atascadero. The majority of existing domestic private wells
within the City are located on parcels within land use areas requiring minimum lot sizes greater than 2.5
acres.
The locations of all known private wells within the LAMP area that were permitted with the San Luis
Obispo County EHS are graphically depicted in Exhibit 2.8.2. The locations of these wells are based on
information provided by the EHS. There are no known records of private wells constructed prior to 1990
or those wells that may have been completed without being recorded with the EHS. It is considered
unlikely that there are a significant number of additional, unreported, private wells due to the factors
described above.
Given the relatively small number of private wells that are present within the LAMP area, there is relatively
low risk of adverse impact to the water supply for these wells from OWTS. The majority of these private
wells provide irrigation water supplies for private parcels and the water is not used for human
consumption. When existing private wells are cross-referenced with parcels connected to AMWC service,
there are a total of 8 known parcels within the City which draw their domestic water for a private well. In
total there are 120 parcels that either are currently served by an OWTS that are located within 100 feet
of a private well.
A graphical depiction of these parcels is included as Exhibit 2.8.3.
In order to continue to verify private wells will not be constructed within setbacks from existing leachfields
or 100% expansion areas for new OWTS’s, the City of Atascadero reviews all well applications received by
the County of San Luis Obispo within City limits. Upon receipt of a well drilling application with the City
of Atascadero, County of San Luis Obispo EHS staff send the application to both City of Atascadero and
AMWC staff for review and approval. City staff reviews all well applications for all applicable setbacks,
including those for OWTS’s.
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Impaired Streams
Under Section 303(d) of the Clean Water Act; states, territories, and authorized tribes are required to
develop lists of impaired waters. These waters are considered polluted or otherwise degraded to meet
the water quality standards set by states, territories, or authorized tribes.
There are two such streams within the City of Atascadero. One impaired stream is Atascadero Creek,
which enters the LAMP area from the southern border and travels northeast to the Salinas River
confluence. Atascadero Creek is 5.4 miles in length and has 148 residential parcels that are within 100
feet of its bank full width. Atascadero Creek is listed for three constituents which include E. Coli, fecal
coliform, and low dissolved oxygen. None of the Atascadero Creek constituents are linked to urban or
OWTS sources.
The second impaired waterway is the Salinas River. This area is the lower confluence of the Salinas Valley
and originates at the Santa Margarita Reservoir. This reach of the Salinas River is impaired due to three
constituents which include chloride, sodium, and pH. As is the case with Atascadero Creek, none of the
constituents of concern in the Salinas River are linked to urban or OWTS sources.
The river is a major source of recharge for the Atascadero Sub-basin and the Paso Robles Groundwater
Basin. There are no residential parcels within 100 feet of its bank along the designated impaired section.
There are open spaces designated in this area that consist of buffer zones where deep and shallow wells
exist for groundwater.
Although the stream segments described above are classified as impaired by the RWQCB, under Section
303(d) they are not identified as impaired water bodies that are subject to Tier 3 requirements per the
OWTS Policy. Per the provision of the OWTS Policy, it is stipulated that if a water body in the Atascadero
LAMP area is designated by the Central Coast RWQCB as “impaired” or significantly degraded as a result
of the use of OWTS, the City will develop an Advanced Protection Management Program (APMP) in
accordance with the established TMDL. In the absence of an approved TMDL, the APMP will be developed
in close consultation with the Central Coast RWQCB and may include, but not be limited to, requirements
for supplemental treatment of existing systems in addition to mandatory, routine inspections as
determined by the Central Coast RWQCB in order to be consistent with the OWTS Policy. In the absence
of a TMDL or an APMP approved by the Central Coast RWQCB, the provisions of Tier 3 of the OWTS Policy
shall apply to OWTS adjacent to water body segments listed in Attachment 2 of the OWTS Policy in
Appendix A.
Areas Susceptible to Historic Localized Flooding
The City of Atascadero is a participant in the National Flood Insurance Program. The Atascadero CID# is
060700. The FIRM panel identification is 06079C0831G there are no repetitively flood-damaged structures
in Atascadero.
In Atascadero, the most common type of flooding event is riverine flooding, also known as overbank
flooding. Riverine floodplains range from narrow, confined channels in the steep valleys of mountainous
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and hilly regions, to wide, flat areas in plains and agricultural regions. The amount of water in the
floodplain is a function of the size and topography of the contributing watershed, the regional and local
climate, and land use characteristics. Flooding in steep, mountainous areas is usually confined, strikes
with less warning time, and has a short duration. Larger rivers typically have longer, more predictable
flooding sequences and broad floodplains.
In addition to riverine flooding, Atascadero is susceptible to flash flooding in smaller watersheds. Flash
flood is a term widely used by experts and the general population, but there is no single definition or clear
means of distinguishing flash floods from other riverine floods. Flash floods are generally understood to
involve a rapid rise in water level, are high velocity, and have large amounts of debris, which can lead to
significant damage that includes the tearing out of trees, undermining of buildings and bridges, and
scouring of new channels. The intensity of flash flooding is a function of the intensity and duration of
rainfall, steepness of the watershed, stream gradients, watershed vegetation, natural and artificial flood
storage areas, and configuration of the streambed and floodplain. Dam failure may also lead to flash
flooding. Urban areas are increasingly subject to flash flooding due to the removal of vegetation,
installation of impermeable surfaces over ground cover, and construction of drainage systems. Wildland
fires that strip hillsides of vegetation and alter soil characteristics may also create conditions that lead to
flash floods and debris flows. Debris flows are particularly dangerous due to the fact that they generally
strike without warning and are accompanied by extreme velocity and momentum.
Finally, localized flooding may occur outside of recognized drainage channels or delineated floodplains
due to a combination of locally heavy precipitation, increased surface runoff, and inadequate facilities for
drainage and storm water conveyance. Such events frequently occur in flat areas and in urbanized areas
with large impermeable surfaces. Local drainage may result in “nuisance flooding,” when streets or
parking lots are temporarily closed and results in minor property damage. Historically, the effects of
localized flooding are not widespread and damage is typically minimal.
The flood magnitude used as the standard for floodplain management in the United States is a flood
having a probability of occurrence of 1% in any given year, also known as the 100-year flood. The most
readily available source of information regarding the 100-year flood is the system of Flood Insurance Rate
Maps (FIRMs) prepared by FEMA. These maps are used to support the National Flood Insurance Program
(NFIP). The FIRMs show 100-year floodplain boundaries for identified flood hazards. These areas are also
referred to as Special Flood Hazard Areas (SFHAs) and are the basis for flood insurance and floodplain
management requirements. The FIRMs also show floodplain boundaries for the 500-year flood, which is
the flood having a 0.2% chance of occurrence in any given year. FEMA has prepared a FIRM for the City of
Atascadero, dated December 2012.
The FIRM for the City of Atascadero shows identified SFHAs for the following flooding sources:
• The Salinas River, which originates in southern San Luis Obispo County and flows northwesterly
into Monterey County along the eastern border of the City. The Salinas Dam, located on the
Salinas River upstream of Atascadero, has reduced the threat of flooding from smaller, more
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frequent flood events on the river but is not designed to provide complete protection from the
100-year flood.
• Atascadero Creek, the main tributary to the river within Atascadero, which bisects the City from
southwest to northeast and runs through the downtown area and several residential areas.
• Graves Creek, which parallels Atascadero Creek to the north and empties into the Salinas River at
the north end of the LAMP area.
• Paloma Creek, which traverses the southern end of the LAMP area.
Exhibit 2.8.5 graphically depicts the extent of the 100- and 500-year floodplains within Atascadero (high
risk and moderate risk, respectively). An area totaling 1.46 square miles within the City is within the 100-
year floodplain and an area totaling 2.40 square miles is located within the 500-year floodplain. The City
is prone to shallow flooding (1 to 3 feet) within the downtown area adjacent to Atascadero Creek, State
Route 41/Morro Road, the underpass at US 101 and State Route 41, and low-lying areas adjacent to the
Salinas River. Flooding in these areas generally occurs during the rainy season from October - April. There
are approximately 172 parcels located within the delineated 100-yr floodplain. Of these, there are 155
parcels that either are currently served or may be served by an OWTS in the future. The location of these
parcels is graphically depicted on Exhibit 2.8.6. To insure that the OWTS on parcels which are located
within floodprone areas are not operated while inundated by a storm or flood event, the City will include
specific restrictions in the OWTS permits which are issued for the affected parcels.
Areas with Native Oak Trees or Woodlands
The City has adopted Ordinance 350 § 2, 1998, which sets forth regulations for the installation,
maintenance, planting, preservation, protection and selected removal of native trees within the City
limits. In establishing these regulations, it is the City’s intent to encourage the preservation, maintenance
and regeneration of a healthy urban forest. The construction of new and / or replacement OWTS within
City jurisdictional areas shall adhere to the requirements of the subject Ordinance and applicable sections
of the City Code.
2.9 KEY SITE SPECIFIC ENVIRONMENTAL CONDITIONS CONTROLLING OWTS
DESIGN & CONSTRUCTION
The following summarizes how key site suitability, land use, and development factors have been
addressed in the OWTS requirements of Atascadero’s LAMP for protection of water quality.
Soil Conditions
Soil suitability is the single most critical aspect of onsite wastewater treatment and dispersal. The
soil provides the medium for the absorption and treatment of wastewater discharged through
sub-surface dispersal systems. This is accomplished mainly through a combination of physical
filtering, biological and chemical processes, and dilution. Protection of underlying groundwater
(where present) relies on provision of an adequate depth of permeable soil below the dispersal
field (zone of aeration) for absorption and treatment to occur.
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Soil type can generally be separated into three (3) groups: coarse grained soils (sands and gravels),
fine grained soils (silts and clays), and soil veneer/exposed bedrock. The coarse-grained soils are
considered most appropriate for OWTS installation, due to their inherent permeability
characteristics. The fine-grained soils are considered more restrictive due to decreased
permeability and the potential for moisture sensitivity. The least suitable soil group for OWTS
placement is the areas underlain by thin soil veneer or rock outcrop. A generalized soil map, which
depicts where each of these soil groups are located within the LAMP area, is included in Exhibit
2.4.2.
Consideration should also be given to the soil layer thickness. Data from the NRCS Web Soil Survey
can be utilized to estimate the depth to the nearest restrictive layer (lithic bedrock) for a specific
parcel. For this assessment, the soil depths which are greater than six feet should be considered
more suitable for OWTS siting. A map which graphically depicts soil depth is included as Exhibit
2.9.1.
The City requires detailed site evaluation to document suitable soil characteristics and depth for
each OWTS installation. The observed depth and percolation characteristics of the soil are used
to select the appropriate location, sizing, and design of the OWTS to achieve proper effluent
dispersal and groundwater protection.
Geologic Factors
Geology is important to the suitability and performance of OWTS due to its influence on
topography and landforms, the type and characteristics of soils that develop at the surface, the
occurrence and movement of sub-surface water, and slope stability. Geologic factors are
addressed for new OWTS based on information from basic site evaluations for all installations,
including information of percentage of slope, proximity to potential unstable land masses, and
depth to bedrock. A map which graphically depicts the average topographic slope of each parcel
is included as Exhibit 2.3.1.
Groundwater Conditions
The vast majority of the City’s parcels do not overly the groundwater sub-basin. A map depicting
those parcels which overlay the Atascadero Sub-basin is included as Exhibit 2.6.1. Although there
is very limited potential for adverse impacts to the public water supply aquifer from OWTS within
the LAMP, the City and the AMWC are extremely diligent with regard to protecting the Atascadero
Sub-basin and the Salinas River Sub-flow systems. The City maintains a close relationship with the
AMWC to ensure that drinking water supplies are closely monitored and that all existing or new
OWTS within close proximity to the groundwater supply are reviewed to ensure both appropriate
OWTS design and the maintenance of an appropriate vertical separation between the point of
effluent dispersal and the water table for protection against pathogen impacts. In addition, septic
systems have been utilized for on-site disposal since the early 1900’s with no indication of adverse
water quality impacts to public groundwater associated with septic use.
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While adverse effects to groundwater quality have not been observed to date, as part of the LAMP
development process, areas of unsewered parcels were evaluated with the intention of
identifying high priority areas for groundwater quality monitoring. Based upon the OWTS Policy,
the primary parameters for evaluation were lot density, soil type and proximity to the Atascadero
groundwater sub-basin. These areas are shown on Exhibit 1.7.1 as potential areas for future
expansion of sanitary sewer collection system. Additionally, each of the five identified areas is
hydrologically connected to the Salinas River underflow either directly or via the Atascadero Creek
watershed, and are all hydrologically upstream of the AMWC wells. As such, continued
monitoring of the AMWC shallow wells is expected to provide ongoing verification of groundwater
protection. For additional information regarding determination of basin degradation and
required protective measures, see Section 4.13, Advanced Groundwater Protection Management
Program.
Public Supply Wells
As previously described in this document, the AMWC is the only water purveyor for the City of
Atascadero. To ensure that the sole source drinking water supply is protected, the City of
Atascadero, in partnership with the AMWC, has implemented measures to assure protection of
existing public water supply wells from the effects of OWTS. These include minimum ho rizontal
setback distances between OWTS and any public supply well and the availability of alternative
non-standard treatment and dispersal technologies to mitigate documented or potential impacts
to groundwater in areas of public supply well usage. The setback distance established by the City
for OWTS proximity to a public water well is presented in Appendix F. No residential parcels are
located within 150 feet of any public water well. The setback distance established by the City for
OWTS proximity to a private water well is 100 feet. Exhibit 2.8.3 graphically depicts all parcels
within 100 feet of a known private water well. For the purposes of developing this Exhibit, setback
distances were measured from a parcel’s boundary (i.e. property line) to the private well location,
therefore an existing OWTS on a designated parcel may actually meet the setback criteria.
Minimum Watercourse/Water Body Setback Requirements
The primary measure of protection of surface water quality is the establishment of safe horizontal
setback distances between OWTS and various watercourse and waterbody features. The
minimum setback criteria for all watercourses and water bodies within the LAMP area are set
forth in this LAMP and/or City OWTS Ordinance and City Code.
The setback distance established by the City for OWTS proximity to a surface watercourse (e.g.
streams, creeks, rivers) is 100 feet. Exhibit 2.7.1 graphically depicts all parcels within 100 feet of
a surface watercourse. For the purposes of developing this Exhibit, setback distances were
measured from a parcel’s boundary (i.e. property line) to the private well location, therefore an
existing OWTS on a designated parcel may actually meet the setback criteria.
The setback distance established by the City for OWTS proximity to a surface water body (e.g.
lakes, ponds) is 200 feet. Exhibit 2.9.2 graphically depicts parcels within 200 feet of a surface water
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body. For the purposes of developing this Exhibit, setback distances were measured from a
parcel’s boundary (i.e. property line) to the watercourse / water body and, therefore an existing
OWTS on a designated parcel may actually meet the setback criteria.
Alternative Treatment and Dispersal Technologies
The City, in accordance with the provisions of this LAMP, the OWTS Ordinance and applicable
provisions of the City Code, provides for the use of alternative treatment and dispersal
technologies that provide flexibility options for system repairs and replacements. The use of
alternative technologies, which produce higher quality effluent, can compensate for reduced
amount of soil absorption area where the OWTS system on an older non-conforming
development site encroaches within the normal setback requirement. Section 4.11 of this
document describes the constituents to be treated and the corresponding effluent constituent
limits when supplemental treatment is required.
Additionally, alternative dispersal methods can reduce the amount of encroachment into the
setback area by making more portions of the property (e.g. shallow soils) potentially feasible for
wastewater dispersal, while also reducing the overall amount of land area needed for the
dispersal system.
Erosion Control Measures
The City requires that erosion control measures be implemented in connection with the
installation of OWTS under certain circumstances, based on the type and size of the system, the
prevailing ground slope conditions, and proximity to storm water drainage features.
Flood Protection Measures
During a flood event, OWTS could result in pollution of an adjacent surface water body that has
overreached the previously specified setback criteria. Therefore, additional setback requirements
are necessary for parcels with OWTS that lie within flood hazard areas. Flood Insurance Rate Maps
(FIRMs) created by FEMA identify Special Flood Hazards Areas (SFHA). A high risk flood hazard
area (Zone A / AE) lies within the limits of a 100-year flood (1% chance in any given year). The high
risk flood hazard areas within the LAMP area are Graves Creek, Paloma Creek, Atascadero Creek,
and the Salinas River. An OWTS setback criteria for OWTS within 100 feet of a FEMA Zone A/AE
boundary is established. Exhibit 2.8.5 graphically depicts parcels within the specified setback of
the mapped FEMA Zone A/AE. For the purposes of developing this Exhibit, setback distances were
measured from a parcel’s boundary (i.e. property line) to the flood zone boundary and, therefore
an existing OWTS on a designated parcel may actually meet the setback criteria.
High Density OWTS and Parcel Size
The size and configuration of the existing parcels within the LAMP area is extremely variable and
diverse. This wide range in parcel sizes is a direct consequence of the original master planning
undertaken during the formation of the Atascadero Colony. Existing parcels within the LAMP area
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range in size from less than 0.5 acre to exceeding 81 acres. Consideration of OWTS density and
parcel size will be addressed during the OWTS design and permitting process, and will require
different and/or addition requirements as deemed appropriate to protect water quality. The City
will consider requirements for parcel size and susceptibility to hydraulic mounding, organic or
nitrogen loading, and whether there is sufficient area for OWTS expansion in case of failure.
Exhibit 2.9.3 graphically depicts the general spatial distribution and location of the parcels of
varying size. For further discussion of OWTS siting and design as pertains to lot size, see Sections
4.12 and 4.13.
Proximity to Existing Sanitary Sewer Collection System
It is the goal of the City to provide sanitary sewer service to as many citizens as feasible. If an
existing inhabitable structure is located within 200 feet of an existing sanitary sewer, the City shall
require the owners of that parcel to extend the sewer to the parcel and connect to the system
unless it is determined that such a connection is physically and/or financially infeasible. Financial
infeasibility shall be a demonstrated cost to connect to sewer greater than twice the cost of OWTS
replacement and a determination by the City of protection of water quality. A finding of physical
infeasibility will be site specific and may be made by the City for reasons including, but not limited
to, increased environmental risks, risks to groundwater, public health risks or excessive
maintenance costs or concerns.
Exhibit 2.10.5 graphically depicts those parcels that are located within 200 feet of an existing
gravity sanitary sewer and are not currently connected to the sanitary sewer system. For the
purposes of developing this Exhibit, setback distances were measured from a parcel’s boundary
(i.e. property line) to the existing sanitary sewer collection pipeline and, therefore an existing
inhabitable structure on a designated parcel may actually be further than 200 feet.
PART 3 LOCAL AGENCY REQUIREMENTS & RESPONSIBILITIES
3.1 PROGRAM ADMINISTRATION & RECORD KEEPING
The City of Atascadero, as a Local Agency, has determined that a significant number of the land parcels
which are located within the Atascadero LAMP area could not meet the Tier 1 minimum requirements, as
set forth in the OWTS Policy, due to the conditions pertaining to the parcel size, soil, geology, topography,
and other conditions described in Part 2. Therefore, the City of Atascadero will implement a LAMP in
accordance with Tier 2. This LAMP establishes the minimum requirements and responsibilities for the
City of Atascadero as a Local Agency with an OWTS management program that provides an alternative to
Tier 1 (Sections 7 and 8 of the OWTS Policy) and achieves the same policy goal of protecting water quality
and public health. The submission of this LAMP for RWQCB approval shall serve as notice of the City of
Atascadero’s intent to regulate OWTS using alternative standards as contained in this document. The City
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of Atascadero’s program provides protection of water quality and public health equal to or better than
Tier 1 standards, as set forth in the OWTS Policy.
The primary entity within the City of Atascadero responsible for administering the provisions and
requirements of this LAMP is the Community Development Department. This department administers
the City's zoning and building regulations through the implementation of the General Plan, Zoning Code,
and the California Building Code. In addition, the department promotes development consistent with the
policies adopted in the General Plan and supports the City’s economic vitality. The Community
Development Department is headed by the Community Development Director and has two divisions:
Planning and Building.
The Planning Division is responsible for implementing the General Plan and ensures all development
projects are consistent with the goals, policies, and programs outlined in this LAMP, current local zoning
ordinances, and state codes. The Planning Division reviews all Use Permits, Subdivision Applications,
Planned Developments, and projects requiring environmental review. The Planning Division provides
technical analysis of entitlement projects and makes recommendations to the Planning Commission and
City Council on all land use issues that come before them for consideration.
The Building Division and Public Works Department are responsible for ensuring that all construction is
consistent with the applicable Building Codes, and coordinates the review of building permits with other
interested departments, such as the Fire Department, Planning Division, and Public Works Department.
With regard to the provisions and requirements of this LAMP, the Building Division and Public Works
Department shall be responsible for the following:
Issuing permits for new construction, replacement and repair of OWTS.
Reviewing plot plans for new and replacement OWTS.
Determining the level and type of site specific investigation requirements for each permit.
Reviewing percolation records and other site investigation reports.
Reviewing alternative treatment proposals for new and replacement alternative OWTS.
Retaining permit information regarding new construction, replacement systems, repairs, and plot
plans.
Complying with LAMP reporting requirements regarding issued permits for new, repaired and
replacement OWTS.
Notifying the AMWC and the California Department of Public Health within 72 hours upon
discovery of a failing OWTS within the setbacks from a public water supply well as identified in
Appendix F. Failing OWTS subject to this section shall be considered any OWTS that has pooling
effluent, discharges wastewater to the surface, or has wastewater backed up into plumbing
fixtures, because the dispersal system is no longer adequately percolating the wastewater, or, any
OWTS with a septic tank failure such that either wastewater is exfiltrating or groundwater is
infiltrating.
Investigating complaints for overflowing/failed septic tanks which includes:
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o Requiring property owners to obtain applicable permits from the Building Division for
repairs, or replacement of failing systems.
o Retaining information regarding complaints and investigations for overflowing or failed
septic systems, and subsequent actions taken.
Complying with the LAMP reporting requirements for complaint investigations, which includes:
o Providing information to the RWQCB annually pertaining to OWTS operation and
maintenance, including number, and location of the complaints.
o Identifying investigated complaints, and
o Determining how the complaints were resolved.
Reviewing applications and registrations issued as part of the liquid waste hauler program.
As part of the LAMP administration process, the City of Atascadero Building Division shall be responsible
for maintaining all OWTS permit related records including, but not limited to those records associated
with Site Reviews, Percolation Tests, Wet Weather Groundwater and/or Localized Flooding Inspections,
OWTS Plan Checks, New and Replacement Standard and Alternate OWTS Permits, Operational Permits for
Alternate OWTS, Abatement and Voluntary Repair Permits, Septic Tank Replacement, Septic Tank
Destruction, and Variance Requests. Additionally, the location of each new, repaired and replacement
OWTS will be field located to determine the GPS coordinates and included on a GIS database to be
maintained by the City GIS Department.
The Building Division will retain permanent records of LAMP required OWTS permitting actions and will
make those records available within 10 working days upon written request for review by the Central Coast
RWQCB. This includes:
Number, location, and description of installation permits issued for new, repaired and
replacement OWTS with Tier indicated.
OWTS variances and/or exemptions issued, including number, location and description.
Annual operating permits issued for Alternative OWTS or other OWTS where the Building
Department has determined the need for an operating permit.
Five year reporting for Standard OWTS without operating permits.
Number and location of complaints, complaint investigations and outcomes.
Permits issued for septic tank pumper and liquid waste hauler trucks.
3.2 LOCAL REGULATIONS, CODES & ORDINANCES
The City of Atascadero regulations for OWTS are contained in Atascadero Municipal Code, which sets forth
standards for the sizing, design, and installation of new, replacement, or enlarged septic OWTS. These
regulations have historically set forth specific requirements related to (a) permitting and inspection of
onsite systems, (b) septic tank design and construction, (c) disposal field requirements, and (c) servicing,
inspection, reporting, and upgrading requirements. Additional requirements for onsite systems in the
City of Atascadero may be adopted as part of Community Plans or as project-specific mitigation measures
or conditions applied to development proposals lying within a designated Special Problem Area of the
City.
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The City of Atascadero anticipates that the applicable sections of the Municipal Code, and local
ordinances, which are affected by this LAMP, may be revised or replaced in the future. If those changes in
the local requirements affect the provisions of this LAMP, then the City will modify this LAMP as required
to insure continuity between the various documents. Prior to adoption of any revision to this LAMP
(excluding typographical/or formatting edits), the City shall obtain the approval of the RWQCB.
3.3 WATER QUALITY ASSESSMENT PROGRAM
The general operational status of OWTS will be assessed through compilation and review of the following
types of information:
Septage pumper reports;
Complaints and abatement activities for failing OWTS;
Variances issued for new and/or repaired OWTS;
Performance evaluations of existing OWTS in connection with building permits, land use projects,
or property transactions;
Inspection of existing Standard OWTS without operating permits as reported under five year
reporting requirements;
Monitoring reports for alternative OWTS and other OWTS under an operating permit.
The City of Atascadero will implement an OWTS water quality assessment program with three primary
objectives: (1) to determine the general operational status of OWTS in the City; (2) assess possible impacts
of OWTS on groundwater and surface water quality, and their associated beneficial uses; and (3) identify
areas for changes to existing OWTS management practices.
The data review and assessment will focus on not only quantitative water quality data, but also on
apparent trends and areas for changes in practice. The assessment will maintain and update the existing
inventory records of OWTS in the City. Those records will be maintained by the Building Division.
The water quality assessment will include the following:
Water Quality Parameters of Concern
The initial focus of the water quality assessment program will be on two key water quality
parameters – pathogens, sodium, chloride, and nitrate-nitrogen. Other parameters of concern
may be added if warranted.
Water Quality Data Sources
Relevant water quality monitoring data for pathogens, sodium, chloride, and nitrate-nitrogen will
be compiled from available sources, anticipated to include:
o Water quality data from cumulative impact studies;
o Monitoring data and reports;
o Domestic water well potability testing or other;
o Public water system raw water quality data from AMWC monitoring reports;
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o Reservoir or stream water quality sampling data from Atascadero Lake, Salinas River,
Atascadero Creek, Graves Creek, and Palamo Creek;
o Receiving water sampling performed as part of a of a National Pollutant Discharge
Elimination system (NPDES) permit or waste discharge requirements (WDR);
o Groundwater sampling performed as part of WDR;
o Data from the California Water Quality Assessment Database; and
o Groundwater data collected as part of the Groundwater Ambient Monitoring and
Assessment Program available in the Geotracker Database.
Assessment
In addition to regularly evaluating the water quality data, it is anticipated that assessment of the
data will include a collaborative review with the AMWC to:
o Determine relevance of the various data to OWTS;
o Identification of any obvious water quality degradation attributable to OWTS warranting
follow-up investigation or action;
o Identification of any water quality degradation where OWTS may be implicated as a
possible source;
o Identification of water quality data/areas where no apparent issues of concern related to
OWTS.
3.4 REPORTING TO THE REGIONAL WATER BOARD
Annual Report
An annual report pertaining to OWTS activities in the City of Atascadero LAMP area will be submitted to
the Central Coast RWQCB by February 1st of each year. The annual report will, at a minimum, include the
following information, organized in a tabular spreadsheet format:
Number and location of complaints pertaining to OWTS operation and maintenance, and
identification of those which were investigated and how they were resolved;
Number, location, Tier and description of permits issued for new and replacement OWTS,
including any variances and/or exemptions issued;
Number, location and results of septage pumper reports;
List of applications and registrations issued as part of the local septage pumper registration
program pursuant to Section 117400 et seq. of the California Health and Safety Code;
Number and location of alternative OWTS and summary of their performance (I.e., effluent
concentrations).
The report will include: (a) a summary of whether any further actions related to OWTS are warranted to
protect water quality or public health; and (b) any other information deemed appropriate by the City.
Five-Year Water Quality Assessment Report to Regional Water Board
Every five years the annual report to the Central Coast RWQCB will be accompanied by a Water Quality
Assessment Report that summarizes the information and findings from the City’s Water Quality
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Assessment Program described above. The report will present an overall assessment regarding any
evidence of water quality impacts from OWTS along with any recommended changes in the LAMP to
address the identified impacts. Additionally, all groundwater water quality data collected by the City from
San Luis Obispo County, Atascadero Mutual Water Company, private well owners or other pertinent
parties will be submitted in electronic data format (EDF) for inclusion in Geotracker, and any surface water
quality data will be submitted to CEDEN in a SWAMP comparable format.
3.5 PERMITTING
The City of Atascadero Building Division shall issue permits for OWTS installation, repair, replacement,
and destruction, which are subject to the requirements set forth in this LAMP. Each permit will specify the
location, critical environmental site characteristics, OWTS specifications, property owner, and contractor
information. Permit applications can be submitted by the property owner or a contractor licensed with
the California State License Board (CSLB). The contractor must have an appropriate, current valid license
issued from the CSLB which is subject to verification by the City at the CSLB website at the time of permit
issuance. A list of acceptable licenses is provided in Section 3.7 of this LAMP. Permits shall be issued after
the Building Division and Public Works Department have completed a full review of the plans and
associated reports, (when required), and have determined the OWTS is compliant with the provisions of
this LAMP and applicable regulations and code requirements. Building Division staff shall perform an
appropriate level of site inspections at the time the OWTS is constructed to ensure the system was
installed as permitted. The Building Division will not finalize an OWTS permit until the installation is
complete and is in compliance with the issued permit requirements.
In addition to the initial design, construction, and permitting requirements, alternative (nitrogen reducing
ATU’s), experimental, and supplemental treatment systems which are installed within the City of
Atascadero will be required to obtain a special system operating permit. This category of OWTS will be
required to submit operating and monitoring reports, including at minimum annual effluent sampling
results.
3.6 VARIANCES & PROHIBITIONS
Variances
An exception (i.e. variance) to any provision of the requirements set forth in this LAMP may be authorized
when in the judgment of the City of Atascadero and based on sound scientific evidence and engineering
judgement, the application of such provisions are unnecessary, or impose additional requirements which
are deemed not necessary to protect the quality of the water resources, public health, and safety. Specific
conditions or exceptions will be prescribed on the variance permit. Examples of variances which may be
granted by the City include reduction of setbacks to property lines or structures where it can be shown
that all reduced setbacks do not negatively impact groundwater resources or public safety. Variance
requests shall be made to the Building Division and on a case by case basis; the City of Atascadero may
establish alternative OWTS siting and operational requirements where it is determined by the City that
the alternate requirements will provide a similar level of protection.
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Prohibitions
There will be situations, however, where variances are not granted. The following is a list of those
conditions that are prohibited:
OWTS with Surface Discharge
Permits will not be granted for any OWTS which utilizes any form of effluent disposal discharging
on, or above, the post installation ground surface; this includes, but is not limited to sprinklers,
exposed drip lines, free-surface wetlands, and ponds.
OWTS Over 10,000 gpd Capacity
If the volume of wastewater produced is 10,000 gpd or more, the method of treatment and
dispersal must be approved by the RWQCB.
Cesspools
Cesspools are not permitted in the City of Atascadero. However, there may be existing cesspools
that were installed prior to the requirement for permits. If a cesspool is discovered pursuant to a
complaint, malfunction or failure, or a building remodel and/or addition, the cesspool shall be
properly abandoned and a repair or replacement OWTS installed as soon as practicable.
Sewer Availability
It is the goal of the City to provide sanitary sewer service to as many citizens as feasible. If an
existing inhabitable structure is located within 200 feet of an existing sanitary sewer, the City shall
require the owners of that parcel to extend the sewer to the parcel and connect to the system,
unless it is determined that such a connection is physically and/or financially feasible . The City’s
OWTS Ordinance includes provisions which require such extensions and connections for new and
some replacement OWTS, subject to the feasibility of such connections. The City recognizes that
in many cases, site topography or other conditions may not make connection feasible In cases
where an existing OWTS has failed on a parcel that has the nearest inhabitable structure within
200 feet an existing public gravity sanitary sewer, then the failed OWTS must be abandoned and
a connection shall be made to the public sanitary sewer, unless it can be successfully
demonstrated to the City that such connection is unfeasible.
Ground Slope
If the installation of a standard OWTS dispersal field exceeds 30% slope, a geological engineering
report shall be prepared and submitted. The report, prepared by a registered civil engineer or
certified engineering geologist, shall demonstrate that the use of a conventional OWTS with a soil
absorption system will not create a public health hazard or otherwise jeopardize the proposed
building site or contiguous properties. For OWTS installation on slopes greater than or equal to
30%, pressure distribution of effluent is required.
Leaching Areas
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Reductions in design sewage flows may be granted where certain water saving devices are
incorporated permanently into the buildings being served. Otherwise, sizing reduction for
International Plumbing & Mechanical Officials (IAPMO) certified disposal systems is not allowed.
Under no condition, shall the maximum allowable decreased leaching area for IAPMO certified
dispersal systems be less than a multiplier of 0.70. No permits will be granted for systems using
a multiplier of less than 0.70.
Supplemental Treatment without Monitoring and Inspection
Supplemental treatment without monitoring and inspection is not allowed. All systems with
supplemental treatment require an annual Operating Permit and monitoring, as well as inspection
by the City of Atascadero.
RV Holding Tanks
The OWTS Policy defines domestic wastewater to include only incidental RV holding tank dumping
but does not include wastewater consisting of a significant portion of RV holding tank wastewater
such as an RV dump station. Pursuant to the OWTS Policy, OWTS dedicated to receiving significant
amounts of wastes dumped from RV holding tanks will not be permitted by the City of Atascadero
and is not subject to the provisions of this LAMP. Applications for OWTS proposed for this use
will be referred to the RWQCB.
Separation to Groundwater
The absolute minimum amount of native soil allowed for installation of a Standard OWTS leach
line or leach bed is five (5) feet between the bottom of the dispersal system and groundwater.
The absolute minimum amount of native soil allowed for installation of a Standard OWTS seepage
pit is ten (10) feet between the dispersal line and groundwater. The absolute minimum amount
of native soil allowed for installation of an Alternative OWTS is two (2) feet between the dispersal
line and groundwater.
3.7 PROFESSIONAL, CONTRACTOR & MAINTENANCE PROVIDER
QUALIFICATIONS
To ensure performance that is consistent with the goals and objectives of this LAMP, OWTS must be sited,
designed, and constructed properly. Once an OWTS is placed into operation, regular inspections and
maintenance are necessary to keep the system functioning as designed and to prolong its useful life.
Therefore, specific qualifications and licenses are required in order to design, construct, maintain, and/or
repair an OWTS within the City of Atascadero LAMP area. Design, construction, maintenance, and repair
of an OWTS shall be conducted by a qualified individual registered in the State of California and shall be
made in accordance with the following requirements. The following are considered Qualified
Professionals (QP):
A California Professional Geologist, a California Certified Engineering Geologist, a California
Registered Professional Engineer, a California Registered Professional Soil/Geotechnical Engineer
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or a California Registered Environmental Health Specialist who is not currently employed by the
City of Atascadero.
All above listed QP are qualified to design a new or replacement OWTS and to perform all
necessary soil and site evaluations where the treatment or dispersal system will be replaced or
expanded, except as noted below. The design of new and replacement OWTS shall be based on
influent wastewater quality and quantity, the site characteristics, and the required level of
treatment for protection of water quality as well as public health.
For a person to be considered a QP for the following activities, the individual must have one of
the qualifications noted next to the activity:
o A site evaluation of the property, including subsurface exploration to determine the depth
of groundwater, down-logging of a soil profile excavation hole and preparing a written
report of findings – California Professional Civil Engineer, California Professional
Geologist, or California Certified Engineering Geologist
o Determination of uniform geology where extreme geologic conditions do not exist –
California Professional Civil Engineer, Professional Geologist
o Preparation of soil profile of any test pits – California Professional Civil Engineer, California
Professional Geologist or California Certified Engineering Geologist
o Address potential for slope destabilization for any proposed hillside installation –
California Professional Civil Engineer, California Certified Engineering Geologist or a
California Registered Professional Soil/Geotechnical Engineer
o Prepare and certify a hydrological assessment to request a waiver of setback
requirements from a blue line stream or tributary confirming that neither the proposed
dispersal system nor the subject drainage course will ever generate sufficient lateral
infiltration that could negatively impact each other, declaring the location for the
proposed dispersal area suitable – California Professional Civil Engineer, Registered
Geologist, Hydro-geologist, or Engineering Geologist.
The QP who prepares the feasibility report shall sign the report. Additionally, he/she shall affix
a professional stamp on the plot plan and the report adjacent to the signature, acknowledging
the responsibility for the overall preparation of the report and agreeing to the following
declaration: “This submittal is intended to represent a complete feasibility report that conforms
with the applicable provisions of the feasibility report requirements of the City of Atascadero
Local Area Management Program (LAMP).”
• Qualified Installers (QI) construct, modify, repair, abandon, or demolish an OWTS. A qualified
installer shall be a contractor duly licensed by the California State License Board to install OWTS,
such as an A, C-36, C-42 or B license holder (provided the B license holder is installing the OWTS
in conjunction with a new construction project as appropriate under applicable State contractor’s
law. An owner/builder may abandon or demolish an OWTS septic tank under permit from the
City of Atascadero without a contractor’s license. The qualifying contractor under this definition
may perform all work related to installation of new and replaced OWTS, and repair of existing
OWTS in accordance with California Business and Professions Code and Title 16 of the California
Code of Regulations. For the purposes of certification inspection of existing OWTS, contractors
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who only possess a General Building Contractor (Class B) license are not qualified to perform the
required OWTS inspection.
• Qualified Service Providers (QSP) operate, maintain and service OWTS. A qualified service
provider shall be an individual or company certified by an alternative OWTS manufacturer to
conduct operation, maintenance and service activities specific to the subject OWTS, or other
qualified professional as approved by the City of Atascadero.
PART 4 OWTS REQUIREMENTS & PROCEDURES
4.1 PROJECTS REQUIRING PLAN REVIEW & FEASIBILITY REPORTS
Any of the following projects that will result in an increase in effluent discharge may require a plan review
and a feasibility report prepared by the appropriate qualified professional. A determination with regard
to the scope of any required investigation and / or report will be made by the City at the time of OWTS
permit application:
Land Development Projects
Conditional Use Permit and land Subdivision projects where a public sewer is not available.
• Building Construction
Any new construction, including secondary units, where a public sewer is not available within 200
feet of the building or property. It is the goal of the City to provide sanitary sewer service to as
many citizens as feasible. If an existing inhabitable structure is located within 200 feet of an
existing sanitary sewer, the City strongly encourages the owners of that parcel to extend the
sewer to the parcel and connect to the system. The City’s OWTS Ordinance includes provisions
which require such extensions and connections for new and some replacement OWTS, subject to
the feasibility of such connections. The City recognizes that in many cases, site topography or
other conditions may not make connection feasible
• Building Expansion
Any renovation of an existing building that entails expansion beyond the current footprint of the
permitted structures, the addition of a room, the addition of plumbing fixtures or a combination
of any of the above that will increase the design flow or demand a greater capacity than the
capacity indicated on the previous approval for the existing system.
• Addition of a Building or Structure on the Property
The addition of a new building or structure such as a garage, gazeebo, patio, deck, swimming pool,
spa, or driveway, whether or not it includes any plumbing or bedroom equivalents must be
evaluated to determine whether the new structure encroaches on the setbacks for the existing
system and to ensure that a tested and approved area remains for the 100% future expansion
area. The addition of a new building or structure that does not result in an increase in effluent
discharge requires plan submission but does not require a feasibility report.
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• OWTS and Alternative OWTS Replacement, Renovation or Repair
o The City will require a plan and feasibility report in the event that an existing OWTS has
failed. Per City regulations, a septic system has failed if public or environmental health is
jeopardized by (a) effluent or sewage escaping to the surface, or otherwise jeopardizing
ground or surface water, or (b) inadequate percolation results in sewage backup into
buildings, or (c) a public nuisance is caused by odor generation that results in formal
complaints, and the system cannot be repaired or replaced consistent with Appendix K of
the Uniform Plumbing Code within thirty (30) calendar days. The private disposal system
shall be abandoned in the manner prescribed by the City in accordance with the currently
adopted edition of the Uniform Plumbing Code. (Ord. 438 § 2, 2004)
o The City will not require that a plan and / or a feasibility study be submitted for minor
repairs to existing OWTS. Minor repairs shall include repair or replacement to failed septic
tanks, piping, appurtenances or system elements upstream of the dispersal system. Such
repairs are considered minor repairs.
o The City will require a plan and feasibility report for any repair, renovation or replacement
of the septic tank, supplemental treatment components, or dispersal system where it is
discovered that the existing system is nonconforming and does not meet the current
requirements.
o The City will require a plan and feasibility report for any repair, renovation or replacement
of a previously approved, existing septic tank, supplemental treatment components, or
dispersal system where geological conditions have been identified that may adversely
affect the operation of the system.
• Activation of the 100% Future Expansion Area
The feasibility of installing the 100% future expansion area shall be demonstrated if the previous
approval was based on soil category evaluation or where the 100% future expansion area was not
tested at the time of the original approval even if the plans or records refer or illustrate to a
location for the future expansion area.
4.2 DOCUMENTS & INFORMATION REQUIRED FOR OWTS PLAN REVIEW
Service Request Application
• The location of the property, including a legal description (state how the property is identified)
and the Assessor’s Parcel Number (APN).
• The property owner’s name, mailing address, phone number, and email address
• The contractor’s name, address, phone number and email address. The geologist’s name and
contact information is to be included with the feasibility report.
• The service requested.
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Feasibility Report
Feasibility reports may be required by the City for a project which will result in the construction of new or
replacement OWTS or a major repair / renovation to an existing OWTS. Feasibility reports will not be
required for minor repairs. Feasibility reports contain “proprietary information” and shall not be released
to the public or industry professionals. Copies of the Feasibility Report will be provided to the RWQCB
upon request. A determination with regard to the scope of any required investigation and / or feasibility
report will be made by the City at the time of OWTS permit application: The feasibility report shall clearly
identity the following:
• The property address, ownership information, the Qualified Professional’s information, the date
of the testing, and the description of the procedures.
• The name and the profession of the person(s) who performed the actual percolation testing
procedure and their working relationship with the QP who signed the report.
• A site-specific determination of seasonal and historical subsurface water levels, including
information regarding the methods utilized to reach the determination. This should include all
available historical data that supports the findings concluded by the QP.
• Percolation testing data including the failures of test holes.
• A general soil description and any features that may affect subsurface wastewater dispersal.
• A soil profile excavation down-logged by a QP. This report is to be included with the percolation
test data.
• For additional information on what is required to be included in the Feasibility Report, see Section
4.7—Procedures for Determining Depth of Subsurface Water, Section 4.8— Requirements
Applicable to all Percolation Tests, Section 4.9—Percolation Testing for Leach Lines and Leach Bed
Dispersal Systems, and Section 4.10—Percolation Testing for Seepage Pit and Gravel Packed Pit
Dispersal Systems.
Floor Plan
Floor plans may be required by the City for a project which will result in the construction of new or
replacement OWTS or a major repair / renovation to an existing OWTS. Floor plans will not be required
for minor repairs. When a floor plan is required to be submitted for the building(s), the plan shall illustrate
all rooms and may be required to provide a listing of all plumbing fixture units (for commercial properties).
A scale indicator shall be included on the map and shall not be subject to change due to reduction or
enlargement of the plan. For new construction the floor plan shall include all proposed rooms and their
designated use. For evaluation of existing systems required due to building expansion, addition of a new
building, OWTS repair, or activation of the future expansion area, the plans shall indicate all current rooms
and their designated use.
Grading Plan
Grading plans may be required by the City for a project which will result in the construction of new or
replacement OWTS or a major repair / renovation to an existing OWTS. Grading plans will not be required
for minor repairs. A copy of the rough grading geology review sheet approval for hillside properties that
is required by the department shall be submitted prior to final approval. The proposed system shall
conform to the rough grading approval by the City of Atascadero Building Division.
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Plot Plan
Plot plans may be required by the City for a project which will result in the construction of new or
replacement OWTS or a major repair / renovation to an existing OWTS. Plot plans will not be required for
minor repairs. A plot plan shall be submitted, professionally drawn to scale, not less than 1”= 20’ for
parcels of one acre or less, and 1”= 40’ for parcels over one acre, signed by a QP. A scale indicator shall
be included on the map and shall not be subject to change due to reduction or enlargement of the plan.
For very large parcels, insertion of the specific wastewater dispersal areas may also be required. The
typeface and size must remain legible when the plan is reduced to 11 x 17 inches. Multiple pages may be
used to clearly identify all relevant features of the site. Photographs may be included to illustrate site
conditions. The plot plan shall illustrate a northerly indicator and contain the following information:
1. The dimension of the lot including property lines, easements for roads, utilities, utility easements,
access to other lots, etc. (Submittal of easement documents with underlined dimensions that
match the dimensions shown on plans and the description of the purpose for each easement shall
be required).
See Appendix E for further information on easements, including conditions when an OWTS
or alternative OWTS may be installed in an easement.
2. All slopes and topographical features, including location of all down banks, man-made cuts, and
unstable land masses, on or off the property, affecting “day-lighting” requirements shall be
indicated. Typically, the day-lighting setback is measured from the point where wastewater is
being discharged within the dispersal system. The day-lighting setback for infiltrative chambers is
measured from the highest point on the interior arc of the infiltrative chamber; for leach lines, it
is measured from the bottom of the pipe where perforations are; and for seepage pits, it is
measured from the capping depth. The capping depth is defined as the depth below the natural
ground surface to the top of the seepage pit system where the infiltrative sidewall begins.
3. All vegetation and trees, especially oak trees and groundwater indicators such as willows, reeds,
cattails, and other hydrophilic plants shall be shown with clear indication of their trunk. A
minimum of 10 feet of horizontal setback from the trunk of non-native a tree to any part of OWTS
is required. No part of the OWTS shall be located within the dripline of an oak tree or other native
tree without an arborist report affirming the location.
The City has adopted Ordinance 350 § 2, 1998, which sets forth regulations for the installation,
maintenance, planting, preservation, protection and selected removal of native trees within the
City limits. In establishing these regulations, it is the City’s intent to encourage the preservation,
maintenance and regeneration of a healthy urban forest. The plot plan shall clearly show that all
components of the OWTS shall adhere to the requirements of the subject Ordinance and
applicable sections of the City Code.
4. All sources of water including, the proposed source of drinking water, all existing, abandoned,
or proposed water wells on or off the property within 200 feet of the dispersal system; all
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water mains, domestic onsite water lines and service connections, culverts, ripraps, French drains,
key- ways, and sub-drains on the subject property.
5. All flowing surface water bodies such as streams, springs, and drainage courses, watercourses,
and flood ways, whether year-round or ephemeral, within 200 feet of the OWTS. The site plan
shall illustrate the natural or levied bank.
6. All surface water bodies such as vernal pools, wetlands, and lakes or ponds within 200 feet where
the edge of the waterbody is the high water mark for lakes and reservoirs.
7. All horizontal set-back distances as required by either the LAMP or the City OWTS Ordinance.
Each setback distance should be indicated on the plan.
8. The location of all percolation tests, including failures, and their corresponding percolation rates;
all borings to establish current groundwater/subsurface water levels; and test locations and
borings shall be identified by numbers corresponding to the collected field data.
9. The location of rock outcroppings.
10. The location of all existing and proposed structures to include cesspools, tanks, out-buildings, car
ports, swimming pools, driveways, paved areas, retaining walls, steps, decks, patios, cantilevered
balconies, etc.
Note: Cesspools are not permitted by OWTS Ordinance and any existing cesspools must be
disconnected from a sewer line and filled in.
11. The location and components of the entire dispersal system to include:
a) The dimensions (length, width and depth) of the leach lines, depth and diameter of
seepage pits, or size of any other style of dispersal field, and the distances between
trenches and seepage pits.
b) The distribution box located at the head of the dispersal system when the dispersal system
is comprised of more than one leach line or seepage pit.
c) The required setbacks from the building are measured out from the vertical plane of
the closest edge of the building exterior, clear to sky, to include any protrusions, such as,
roof overhang, balcony, deck, etc.
d) Any supplemental treatment components and disinfection treatment components.
e) The required day-lighting setback applied to underground structures where the structure
is at or below the level of the point of discharge measured out from the vertical plane of
the closest edge of the structure.
12. The location, size and rating of the septic tank to be installed.
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13. The proposed area reserved for both the 100% future expansion and for repair/replacement of
existing systems. Where access to the future absorption area is compromised by the construction
of the dwelling or by any future use of the property, the 100% future expansion system shall be
installed with the present system. The 100% future expansion system installed with the present
system shall not be activated until the life of the present system has come to its end.
14. All supplemental information that may be requested by the City of Atascadero to facilitate a
comprehensive assessment of the proposed OWTS must also be included on the plot plans.
Cross Sectional View of the Dispersal Field or Seepage Pit
A cross-sectional view of the proposed installation of the entire dispersal field or seepage pit and its
components, illustrating setbacks to preclude day-lighting. Any extra gravel in excess of the required 12
inches below the distribution line(s) shall be indicated on cross sectional view.
Site Identification
The address of the job site is to be clearly posted at the construction site. Clearly visible residential
addresses meet this requirement. If an inspector attempting to conduct a site evaluation as part of the
plan approval process is unable to locate the property because the address is not properly posted, the
contractor may be required to pay additional fees for a second site evaluation.
Additional Information Required Depending on the Project
Additional investigations and / or reports may be required by the City for projects which will result in the
construction of new or replacement OWTS or a major repair / renovation to an ex isting OWTS when in
the judgment of the City they are warranted. The following will not be required for minor repairs.
An evaluation of the current system by a QI is required for existing systems without evidence of
prior approval and approved systems over 15 years whenever the project includes any of the
following:
o building expansions without additional bedrooms or plumbing fixtures;
o repairs of the existing system;
o the addition of new buildings or structures to the property, or;
o the activation of a future expansion area.
• A Slope Evaluation Report approved by a qualified professional is required whenever natural
ground slopes in dispersal areas are greater than 30%.
• A geotechnical report from a QP for any unstable land mass or area subject to earth slides when
proposed set back distance will be less than 100 feet.
• A report by a registered civil engineer indicating that the wastewater generated by the OWTS
will not surcharge and mound on any caisson, column, pillar or footing that is intended to support
an above ground structure, installed below grade extending down to or below the point of
discharge, even though it may be lesser in width than the dispersal system (i.e., smaller than the
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diameter of seepage pit or width of trench) with which it interfaces. Any such structures with
width equal to or wider than the interfacing dispersal system shall be considered an underground
structure and a 15-foot day-lighting setback requirement shall apply.
Identification of types of filler material such as rock, gravel, or alternative materials to be used in
the dispersal fields of leach lines and beds, or to line the outside of the seepage pit liners.
Documentation from the supplier attesting that all filler materials/rocks have been washed to be
reasonably free of fines shall be available at the time of installation.
4.3 SETBACKS & OTHER CONSIDERATIONS
Setbacks
All new OWTS and alternative OWTS installations and all replacement conventional OWTS shall
comply with the setback requirements of OWTS Ordinance or the LAMP, whichever is greater. A
table with all of the required setbacks is provided in Appendix F.
The setback requirements for an alternative OWTS that is replacing a currently installed OWTS
shall meet all of the setback requirements as is feasible. When setback requirements cannot be
met, the City shall specify the required level of treatment, if any, to be provided by the alternative
OWTS. Section 4.11 of this document describes the constituents to be treated and the
corresponding effluent constituent limits when supplemental treatment is required.The minimum
depth to the anticipated highest level of groundwater below the bottom of the leaching trench
shall not be less than prescribed in Table 4.3.1.
Table 4.3.1. Minimum Vertical Separation to Groundwater for Conventional OWTS Dispersal
Systems
When the percolation rate is either 1 minute per inch or faster, or slower htan 120 minutes per
inch, or when the minimum vertical separation to groundwater cannot be met, supplemental
Percolation Rate Minimum Vertical Separation
to Groundwater
Percolation Rate ≤ 1 MPI
Not Authorized without
Alternative OWTS with
Supplemental Treatment
1 MPI < Percolation Rate < 5 MPI Twenty (20) feet
5 MPI < Percolation Rate < 30 MPI Eight (8) feet
30 MPI < Percolation Rate < 120 MPI Five (5) feet
Percolation Rate ≥ 120 MPI
Not Authorized without
Alternative OWTS with
Supplemental Treatment
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treatment, including Total Nitrogen reduction, shall be incorporated into the proposed OWTS and
the vertical groundwater separation requirements specified by Table 4.11.1 shall apply.
A minimum of 10 feet separation shall exist between the bottom of a seepage pit and
groundwater.
The minimum setback for day-lighting is 15 feet and it’s considered the shortest horizontal
distance measured from the nearest point that wastewater is being discharged (i.e., closest side
wall of leach line or perimeter of seepage pit) to the edge of sloping grounds or to any
underground structure.
New OWTS and alternative OWTS shall not be located in FEMA Flood Zone A/AE unless no feasible
alternative location exists and shall be subject to a more stringent design review and approval by
the City.
General Project Requirements
With the exception of minor repairs, a city building permit is required for all septic tank and leach
system repairs, replacements, or installations.
All conditions of the City Building Code shall be complied with.
No plans will be accepted or approved for any new OWTS, alteration or repair of a failed OWTS,
for which a connection to the public sewer is available (as defined by the City Municipal Code),
unless the City determines that connection to the existing sanitary sewer is not feasible or creates
an undue hardship due to site specific conditions
All City issued documents, such as, plan correction response letters, inspection reports, approvals
and other related documents are considered public records and may be released upon request,
subject to the provisions and restrictions of applicable laws and regulations
Prior to conducting an evaluation of an existing OWTS, the qualified contractor shall notify the
City of the date and the time of the uncovering of the OWTS, at least one business day in advance,
for possible observation and verification by the City representative.
The evaluation of an existing system must be submitted on forms provided by the City. See
Appendix G for a copy of the form. The evaluation of an existing system must include whether the
existing system was properly installed, is currently functional, and structurally in good repair. The
qualified contractor shall submit to the City a signed report attesting to such capability for the
existing OWTS. The inspection report of the current system required in shall include:
o Verification that all components were installed/constructed in an acceptable manner (i.e.,
setbacks are met) and all components are intact and in good repair.
o Verification of the structural integrity of the entire system, to include tank, baffles,
plumbing lines, distribution box, diverter valves, and any other related component.
o The report shall attest to the current condition of the dispersal system. For example, the
extent which the perforated pipes for leach lines and the gravel below are clogged; the
presence of organic build up in the seepage pit; the observed level of standing wastewater
in seepage pit and if the wall of the seepage pit is stained due to constant contact with
wastewater that may have happened in the past, etc.
o The report shall include a plot plan that clearly identifies and illustrates the entire OWTS
to include the tank size and related details of the dispersal system.
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If the evaluation of an existing system determines that the septic tank is inadequate the tank shall
be upgraded to meet the current City requirements.
When a previously approved OWTS fails but the proposed expansion area does not meet the
current percolation rates, an alternative OWTS shall be required even though there are no
concurrent improvements planned for the structure.
When a previously approved OWTS fails and surface or subsurface water conditions are such that
the current setback requirements cannot be met, an alternative OWTS including disinfection shall
be required.
Secondary units may be combined with the primary units in the septic system providing the septic
tank and leach system are adequately sized. The City encourages separate systems wherever
feasible. When separate systems are constructed for secondary units, all siting and design criteria
for primary unit OWTS design apply. Pursuant to Section 4.1, approval of secondary units on sites
without sewer availability remain contingent upon viability of OWTS expansion or addition.
Recently enacted State policies regarding secondary units do not override OWTS feasibility
analysis.
4.4 SEPTIC TANK CAPACITY & REQUIREMENTS
The liquid capacity of all septic tanks shall conform to the requirements found in Appendix H.
Capacity of Septic Tanks
The determination of the capacity of a septic tank is subject to the following requirements:
• The capacity for a septic tank to be utilized for single or multiple family dwelling shall be
determined based on the number of bedrooms and bedroom equivalents.
• The septic tank capacity for commercial establishments shall be determined based on fixture units
count specified in Table 4.4.1 and in accordance with the type of the establishment indicated in
Table 4.4.2, whichever provides a greater capacity.
• When determining the septic tank size for establishments that are composed of both single or
multiple family dwelling units and commercial establishments, whether based on fixture unit
count or bedroom and bedroom equivalent or combination of both, the largest resulting capacity
shall be proposed.
• All rooms with the exception of core rooms shall be considered a bedroom or bedroom equivalent
when determining the minimum capacity for a septic tank and sizing of a dispersal system. As
noted in a previous section of this document, the application for construction of a new OWTS shall
include a detailed floor plan.
• Detached structures/rooms with windows that are greater than 70 square feet in area and are
not equipped with water lines or plumbing fixtures shall not be considered a bedroom or bedroom
equivalent. Plans for construction shall clearly describe the purpose of such structure/room and
indicate that the structure/room is not equipped with any plumbing fixtures.
• A guest house with kitchen may connect to an existing primary structure OWTS or connect to a
separate OWTS. Sizing of a separate OWTS for guesthouses with kitchen shall be computed based
on the number of bedrooms and bedroom equivalents. When a guesthouse with kitchen uses the
primary unit OWTS, an engineering report shall be prepared demonstrating the septic tank and
leach system are adequately sized. The construction of a guesthouse with kitchen requires
approval from both the Planning and Building Divisions.
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Note: Septic tanks and leach systems may be voluntarily oversized to improve the retention time. This
should be clearly noted on the plans.
Structural Requirements for Septic Tanks
• All new septic tanks shall comply with the most current version of the OWTS Ordinance.
• All new or replacement tanks shall be approved by IAPMO or stamped and certified by a California
registered civil engineer as meeting industry standards and their installation shall be according to
manufacturer’s recommendations.
• New and replacement tanks on conventional OWTS shall be equipped with an effluent filter to
prevent the solids in excess of 3/16th of an inch from passing to the dispersal area. All filters shall
meet NSF 46 certification standards. Filter sizes shall be increased as design flow rates are
increased.
• All joints between the septic tank and its components shall be watertight and constructed of solid,
durable materials to prevent excessive corrosion or decay.
• The inverts of all outlets shall be level and the invert of the inlet shall be at least one inch higher
than the outlets.
• Inlets to any gravity system distribution box shall be at least 6 inches higher than the distribution
box outlet.
• Leach system distribution piping shall be at least 6 inches lower than the septic tank or distribution
box outlet.
Example of an Aerobic Treatment Tank:
• All septic tank access points shall have watertight risers the tops of which are set not more than
six (6) inches below grade. Access openings at grade or above shall be locked or secured to prevent
unauthorized access.
• Aerobic systems may be used in place of conventional septic tanks provided they provide
equivalent treatment to a conventional system when the aeration unit is not operational.
• Any tank proposed to be installed within a driveway must be traffic-rated and equipped with
traffic-rated risers with traffic-rated covers set at grade. Non-traffic rated tanks shall not be
installed within 5 feet of any road or driveway.
• OWTS that utilize pumps to move effluent from the septic tank to the dispersal system shall be
equipped with one of the following: a visual, audible, or telemetric alarm that alerts the owner or
service provider in the event of pump failure. All pump systems shall, at minimum, provide
sufficient storage space in the pump chamber during a 24-hour power outage or pump failure and
shall not allow an emergency overflow discharge. The capacity for the storage space for pump
chamber shall be equal or greater than the sum of 300 gallons for first three bedrooms and 200
gallons for each additional bedrooms or bedroom equivalent rooms thereafter.
• When the existing system is required to be exposed to establish the size and capacity of the septic
tank and/or dispersal field or seepage pit, the City staff shall visit the site and verify the
dimensions with the QP/QI. The QP/QI shall notify the City of the date and the time of the
uncovering of the OWTS, at least one business day in advance for possible observation by the City
representative.
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4.5 DISPERSAL METHODS FOR CONVENTIONAL OWTS
General Dispersal System Requirements
If the percolation tests for a proposed leach bed or leach line results in an absorption rate that is
slower than 120 MPI, the soil conditions do not meet the minimum requirements of a
conventional system. Soil replacement as detailed in Appendix I is required.
If the percolation test for a proposed leach bed or leach line results in an absorption rate that is
faster than 1 MPI, the soil conditions do not meet the minimum requirements of a conventional
system. Soil replacement as detailed in Appendix I is required.
Rock fragment content of native soil surrounding the dispersal system shall not exceed 50 percent
by volume for rock fragments sized as cobbles or larger and shall be estimated using either the
point-count or line-intercept methods.
Leach bed or leach line dispersal systems shall not exceed a maximum depth of 10 feet as
measured from the ground surface to the bottom of trench unless Supplemental Treatment is
used.
No excavation for a leach line or leach bed, shall extend to within 5 feet of groundwater. No
excavation for a seepage pit shall extend to within 10 feet of groundwater.
Where two or more leach lines are installed, an approved distribution box of sufficient size to
receive lateral lines shall be installed at the head of the dispersal field. Similarly, two or more
seepage pits shall be connected by means of a distribution box and not in series.
Distribution boxes shall be of an approved type with protective coating on interior surfaces,
sufficient in size, designed to ensure equal flow and be installed on a level concrete slab in natural
or compacted soil.
There shall be at least three (3) feet of natural, continuous, undisturbed soil beneath the bottom
of a conventional dispersal system. When there is not 3 feet of natural, continuous, undisturbed
soil between the bottom of the dispersal system and fractured bedrock or bedrock, soil
replacement as detailed in Appendix I is required.
The dispersal area shall be configured to exclude all failed test holes. The minimum distances
between failed test holes to the nearest component of the proposed dispersal system shall be not
less than the required setback for the respective dispersal component.
Dispersal fields for leach lines and leach beds shall be installed at the shallowest practicable depth
to maximize elements critical to treatment of effluent in the soil. A depth of 12 to 18 inches of
earthen cover is required over leach lines. See Appendix I for reason for shallow dispersal system.
On sloping grounds, to compensate for excessive line slope, leach lines and leach beds shall be
stepped. The lines between each horizontal section shall be made with watertight joints and shall
be designed so each horizontal dispersal trench or bed shall be utilized to the maximum capacity
before the effluent shall pass to the next lower leach line or bed.
A slope stability report is required for any slope of 30% or greater. A California Certified
Engineering Geologist or a California Registered Professional Soil/Geotechnical Engineer shall
address whether the any unstable land mass or areas subject to earth slides require a setback of
100 feet or indicate other setbacks that should be allowed.
Leach lines on hillside properties shall be installed as level as possible with the contour of the
land.
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The dispersal field/area may not be covered or paved over and in no case may a vehicle be driven
or placed over the dispersal field/area. See Appendix I for additional information.
Leach Bed
This system consists of multiple perforated lines installed in an excavation with a minimum 48 inches in
width, maximum of 100 linear feet in length and containing a minimum of 12 inches of gravel beneath a
system of perforated distribution pipes through which sewage effluent seeps into the surrounding soil.
Perforated pipes shall neither be installed greater than 6 feet apart nor closer than 3 feet to the sidewall
of the leach bed.
Construction of a Leach Bed:
The surface area designated as a leach bed shall be at least 50% greater than the surface area
required for leach lines.
Gravel, stone, slag and similar materials used for filtration purposes shall be thoroughly washed
to be free of fines (small particles).
Due to confined space, if the slope exceeds 20%, 4 to 5 feet of filtration gravel is typically needed
and the trench depth can range from 6 to 8 feet.
On slopes greater than 30%, 3½ feet of clear cover is often needed to achieve 15 feet daylight.
Leach Line
A standard leach trench system consists of one or more trenches. Each trench shall be 36 inches in width,
maximum of 100 feet in length, and contain a minimum of 12 inches of gravel beneath a single perforated
distribution pipe through which sewage effluent seeps into the surrounding soil. Alternative leach trench
configurations may be approved by the City, based on a review of site specific conditions and information
provided by the QP.
Example of a Leach Field:
When more than 1 leach line is required to be installed, they shall equal in length and size and be
provided effluent from a distribution box rather than an overflow pipe connecting the leach lines
in series. See Appendix I for additional information regarding leach lines of uneven length or leach
lines required to bend.
The distance between trenches shall be a minimum of 4 feet, measured from closest sidewall to
sidewall. The distance between trenches shall be increased by 2 feet for every 1 foot of gravel
beneath the perforated lines.
Gravel, stone, slag and similar materials used for filtration purposes shall be thoroughly washed
to be free of fines (small particles).
Infiltrative Chamber
This system consists of semicircular chambers installed contiguously with open portion of the infiltrative
chambers on the ground. The infiltrative surface area credit shall be limited to the calculated floor area
beneath the open portion of the chamber, excluding the area beneath the base of walls where infiltrative
chamber is placed on the ground. The infiltrative surface area may be reduced up to a maximum of
seventy percent (70%) of the area that it would be required for a conventional leach field dispersal system
if the QP provides an engineering basis for such reduction in the Feasibility Report Use of gravel under the
infiltrative chambers is optional
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Seepage Pit
This system consists of one or more covered lined circular excavations, four to six feet in diameter with
an interior lining of six inches of gravel backfill allowing effluent to seep into the surrounding soil. Pit liners
shall be constructed of concrete, sewer brick, or an alternative material which is approved by the City.
The pit shall have a minimum effective sidewall of 10 feet below its sewer inlet pipe. The seepage pit(s)
must be sized to hold a volume of at least five (5) times the volume of the proposed size of the septic tank
divided by the amount of water absorbed during the percolation test. When groundwater depth prevents
a single pit from meeting this requirement, additional seepage pits must be constructed. Multiple seepage
pits shall have effluent delivered to them from a distribution box rather than connecting the pits in series.
The volume of storage for the seepage pit shall be computed based on its pore volume (i.e. excluding the
volume of the rock mass).
If the percolation tests for a replacement seepage pit or gravel packed pit results in an absorption rate
exceeding 5.12 gallons per square foot of dispersal area per 24 hours, Soil replacement as detailed in
Appendix I is required.
The installation of a seepage pit is only allowed as part of an existing, conventional OWTS when it is
required to install the future expansion area, the soil meets percolation rate requirements, and
inadequate surface area exists for leach lines or a leach field.
The installation of seepage pits for new construction requires the use of an alternative OWTS.
Gravel-packed Pit
Gravel packed pits are seepage pits that are filled with gravel of ¾ to 2 ½ inches in size up to the cap level,
allowing effluent to seep into the surrounding soil. The gravel must be washed and free of silt. All of the
limitations on seepage pits apply to gravel packed pits.
The gravel packed pit(s) must be sized to hold a volume of at least five (5) times the volume of the
proposed size of the septic tank divided by the amount of water absorbed during the percolation test. The
same requirements for percolation testing of a seepage pit apply to a gravel packed pit if the test is
performed without gravel pack being added.
Geosynthetic Aggregate Systems may be permitted by the City subject to review and approval of
supporting documentation from the QP. These engineered geosynthetic aggregate systems may be
considered in lieu of gravel-packed or infiltrative systems. In such cases, no reduction in geosynthetic
aggregare volume (compared to gravel volume) will be permitted.
4.6 FUTURE EXPANSION AREA REQUIREMENTS
• Every new OWTS and alternative OWTS, regardless of the type of the dispersal system, shall be
provided with a sufficient land area for an entirely new dispersal system (100% future expansion
area).
o When soil profile and percolation tests confirm alluvium geology and uniformity in
geology has been has been guaranteed by the judgement of the Professional Geologist,
the required percolation testing for the 100% future expansion area may be waived. The
uniformity in geology shall be established through both soil profile studies and
percolation testing of more than one hole.
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o Where proposed future expansion areas are in bedrock, hardpan or fractured rock
formation, the future pits shall be tested to establish percolation rates for each individual
pit.
• If the dispersal system proposed for the 100% future expansion area is installed concurrently with
the construction of a new system, the use of both the existing and new dispersal fields may be
placed in operation and their use alternated on a bi-annual basis to permit each dispersal field to
“rest” for six (6) months per year at the option of the property owner.
• Any expansions beyond the current footprint of the existing structure or addition of any new
detached structures, such as swimming pools, spas, patio, decks, stairs, walls or any permanently
constructed structures shall require the demonstration of the feasibility of installing the 100%
future expansion area, regardless of whether the proposed renovation will increase the design
flow or demand greater capacity than the existing OWTS.
o As a part of an approval for 100% future expansion, a previously approved existing OWTS
that has been in service for more than 15 years is required to be inspected by a Qualified
Contractor (see Section 3.7).
o If previous approval of the OWTS is not available or did not include approval of the 100%
future expansion area AND the renovation/expansion neither increases the design flow,
nor demands a greater capacity, the existing OWTS shall be evaluated by a Qualified
Contractor, in addition to proving out the 100% future expansion area by a Qualified
Professional (see Section 3.7).
• When the present dispersal system has failed and the 100% future expansion area is to be utilized,
a new 100% future expansion area shall be demonstrated through testing in accordance with the
provisions of this LAMP and be reserved for future use.
This requirement may be waived if one of the following conditions is met:
o When the 100% future expansion area (dispersal system) that is being activated is
equipped with supplemental treatment component;
o When the property is one acre or greater in size and the geology report prepared for the
100% future expansion area that is being activated confirms no unfavorable geological
conditions, such as, bedrock formation, etc. exist;
o Where the geology report for the existing present dispersal system, if available, concurs
with the geology report prepared for the 100% future expansion area that is being
activated, confirming uniform and favorable soil and geological conditions throughout the
property.
• An expansion of up to 10% of the current footprint may be allowed without requiring to prove
out the feasibility for the 100% future expansion area so long as the expansion:
o Does not increase the design flow or require greater capacity,
o Does not take up more than 10% of the remaining available undeveloped area on the
property, where no unfavorable geological conditions, such as, bedrock formation, etc.
exist,
o All required setbacks can be met,
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o The location and direction of the proposed expansion is in a manner that will not interfere
with the installation of the 100% future expansion area when needed in the future.
o Applicants who elect to utilize the exemption under 10% expansion rule, shall submit a
signed statement from a California Professional Civil Engineer, California Professional
Geologist, or a California Certified Engineering Geologist substantiating that there are
areas available on the property for the installation of the 100% future expansion area and
there are no unfavorable geological conditions, such as, bedrock formation, etc. exist
within the property that may prevent the installation of the 100% future expansion area
when needed in the future.
o Only one use of the 10% expansion rule will be granted to a property.
• Land area for future expansion may be acquired by a property owner through the acquisition of
an effluent disposal easement on an adjacent property, subject to the approval of the City. Under
this scenario, the perpetual easement shall be recorded with the titles of both properties.
• In situations where adequate land is not available for a second 100% future expansion area, the
dispersal system that is being installed shall be equipped with supplemental treatment
component.
• When approving a future expansion area for a system without prior approval, the approval issued
by the City will only encompass the 100% future expansion area, approving only the
renovation/expansion and not the existing OWTS. The City may require other additional
improvements to ensure that the minimum required standards have been met.
See Appendix J for additional considerations for a future expansion area.
4.7 PROCEDURES FOR DETERMINING DEPTH OF SUBSURFACE WATER
Known or Observed High Subsurface Water
In areas that are known to have high groundwater and/or where observation of mottling, oxidation,
staining, crystal buildup, seeps, weeps or other features that may indicate presence of groundwater in the
past or present or where groundwater or moisture seepage (seeps, perched-water, etc.) is present within
5 feet below the expected bottom of the dispersal field or seepage pit, the City may require that the QP
invesigate the presence of moisture and determine the depth to high groundwater through a groundwater
level observation well in a manner described below:
• A permit for a monitoring well is required from the San Luis Obispo County EHS. The QP shall
contact the EHS for information on applying for a permit to construct a monitoring well.
• The high groundwater determination exploration shall be conducted throughout the months of
December through May.
• The groundwater level shall be monitored and measured to determine the highest level that
water has reached during the monitoring period and the final static water level. The groundwater
level shall be measured by the QP at least once every two weeks, during the entire monitoring
period.
Typical Monitoring Well:
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When a minimum of 2 inches of rainfall has been recorded during a 10 day period within the area w here
the groundwater monitoring is being conducted, the interval between two monitoring events shall be
reduced to once a week, starting after 3 weeks from the last rainfall that constituted the 2-inch rainfall. If
rainfall continues to occur during the monitoring period, the monitoring intervals shall continue to remain
at least once a week.
The groundwater measurements could be achieved by physical observation or by using a piezometer or
any instrument intended for this purpose to record the groundwater level. The piezometer or instrument
may be a float device that mechanically or electrically records the highest groundwater level.
• The groundwater level observation well shall be installed to a minimum depth of 10 feet below
the anticipated depth of dispersal field or seepage pit, at the lowest possible elevation in the
vicinity of a proposed wastewater dispersal system.
If an impermeable layer is present at a depth of less than 10 feet below the anticipated bottom
of the dispersal field or seepage pit, the subsurface water level observation well shall not extend
beyond the impermeable layer.
• Seeps and perched-water are considered infiltration of water and are considered as evidence of
high groundwater being present. The QP shall monitor the excavated groundwater test hole
during the entire observation period as specified above to observe the presence of water,
continuation of seeps, increase/decrease in the seepage and any fluctuation of the water level or
if the water has been dissipated and the excavated test hole is completely dry. The professional
geologist shall interpret the observation in the geology report and substantiate that the
infiltration and presence of water no longer exists, if so.
4.8 REQUIREMENTS APPLICABLE TO ALL PERCOLATION TESTING TYPES
A sufficient number of percolation tests shall be conducted within the anticipated dispersal system on all
properties proposing to use an OWTS. The entire percolation test procedures, including presoak shall be
performed by a QP or individual(s) that are supervised by the QP.
• Prior to performing percolation testing, the QP shall notify the City of the date and time of all
percolation tests to be performed, at least one business day in advance. The City representative
may visit the site to observe the testing procedure. All QPs are strongly advised to consult with
the City, prior to performing the tests, to reach an agreement on the number of test holes
required when it’s anticipated that unusual circumstances may be encountered.
• When a minimum of 2 inches of rainfall has been recorded within a 10 day period in the area
where the percolation test is to be conducted, the start of percolation test, including the presoak
shall be delayed until such time that the QP determines that the site conditions are no longer
impacted from the recent rainfall events.
• All percolation testing shall be performed within the immediate proximity of the actual
anticipated dispersal area. All test holes, successful or failed, shall be clearly identified and labeled
by durable monuments and tags so that the correct locations for dispersal system (leach fields
and seepage pits), as established through successful tests, can be easily identified during the
construction.
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• Where extreme geological conditions (e.g., bedrock formation or variation in water table, etc.) do
not exist on a property and where uniform geology has been established by a QP within a certain
limited area on the property, the results of soil profile and percolation testing conducted in the
area may be accepted as a representation for a dispersal field or seepage pit as long as the test
holes are within a 35 feet radius of the proposed dispersal field or seepage pit.
• The distances between percolation test holes shall be the same as the setback required for the
respective dispersal system when constructed. An exception may be allowed when due to
extenuating circumstances test holes cannot meet minimum setback requirements.
• Results from previously conducted percolation testing may be accepted for a project, if the
proposed dispersal field or seepage pit is in the same location where tests were conducted and
referenced in updated geology reports, except when significant changes in geology (e.g., flood,
earthquake, significant groundwater recharge, etc.) have occurred or the City’s procedures for
percolation test has changed after the date of the testing. All plan approvals of the entire
construction proposal will expire one year from the date of the approval.
4.9 PERCOLATION TESTING FOR LEACH LINES AND LEACH BED DISPERSAL
SYSTEMS
Requirements
o There shall be a minimum of 3 test holes in the proposed present dispersal area and 3 test holes
in the proposed 100% future expansion area unless a waiver on testing the future expansion area
has been granted (see Section 4.6).
o Requiring only 3 test holes represents the most optimal situation with a minimum size system and
shall be authorized only when uniformity in geology and absorption rates has been demonstrated.
Larger dispersal fields, significant variation in absorption rates of percolation tests or less
favorable geological conditions, such as, hard rock formation require additional testing. It’s
recommended and may be necessary to excavate and test a sufficient number of percolation test
holes in the proposed present, and future dispersal areas to provide a complete and accurate
representation of the absorption rate for each proposed dispersal area.
o The location for percolation testing on each line shall be strategically selected so as to provide a
true representation of the entire leach line.
o The percolation test locations shall be evenly spaced along the proposed present and 100% future
expansion leach fields/lines in a manner that the test holes are not greater than 35 feet apart
from each other.
o During the percolation testing, the slowest percolation time observed among all tested holes shall
be considered for determining the size of the proposed dispersal field.
Percolation Test Procedures for Leach Beds and Leach Lines.
1. Prior to performing percolation tests, a determination of the topography and plumbing hydraulic
grade shall be made to appropriately determine the level of the dispersal field.
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2. An excavation shall be made at least 10 feet below the calculated depth of the trenches to
determine if seasonally high groundwater precludes the use of a conventional system. Based on
this information, the size of the system may be estimated and a determination made concerning
a representative number of test holes.
3. Excavation for the test holes shall be made at the same depth as the proposed depth for the leach
lines or leach bed. These test holes shall be at least 3 feet square and dug to the depth of not less
than 2.5 feet. A 1 cubic foot hole (1’ x 1’ x 1’) shall be provided at the bottom. All percolation tests
shall be performed so that the top of the 1 cubic foot test hole is at the same level as the
anticipated bottom of the trench.
4. The sides and bottom of the 1 cubic foot holes shall be scarified so as to remove the areas that
became smeared by the auger or other tool used to develop the hole.
5. The 1 cubic foot holes shall be thoroughly presoaked 24 hours prior to percolation test. If water
is found in any test holes after 24 hours of the presoak, that test hole is considered failed. This
procedure is to ensure that the soil is given ample opportunity to swell and to approach the
condition it will be in during the wettest season of the year.
The soaking must be done with clean water, and the water should be added carefully (to avoid
disturbing the sides of the test hole) to a minimum depth of twelve inches. There are three options
for conducting the presoak:
o 1st option: Maintain 12 inches of clear water for a minimum of 4 hours. After 4 hours,
allow the water column to drop overnight. Testing must be done within 15-30 hours after
the initial 4-hour presoak.
o 2nd option: The hole should be continuously soaked overnight, which may require
constant addition of water from a make-up reservoir, possibly by means of an automatic
siphon. The percolation measurements are made 24 hours after the start of the soaking
period.
o 3rd option: In sandy soils with little or no clay, no swelling of the soil will occur. If, after
filling the hole twice with 12 inches of water, the water seeps completely away in less
than ten minutes, the test can proceed immediately.
6. Following the presoak, the test holes shall be completely filled with water again and allowed
adequate time for the water level to drop. As the water level drops, each one inch of drop shall
be recorded as Minutes per Inch (MPI). The size of the dispersal field shall be determined by the
amount of time required for the water to drop from the 5th to the 6th inch. The slowest
acceptable elapsed time recorded on the property shall be used as the representative of the
percolation rate for the area being tested and utilized in the Ryon Formula calculation.
7. At or before 24 hours later, after a successful presoak, the test holes shall be completely filled
with water again and allowed adequate time for the water level to drop. As the water level drops,
the time of each one inch of drop shall be recorded. The size of the dispersal field shall be
determined by the amount of time required for the water to drop from the 5th to the 6th inch.
The slowest acceptable elapsed time recorded on the property shall be used as the representative
of the percolation rate for the area being tested and utilized in the Ryon Formula calculation.
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Ryon Formula:
𝐴=𝑇+6.24
29 ∗𝐶
2
Where A = sq. ft of 3’ wide trench dispersal area
T = Time in minutes for the 6th inch of water to drain
C = Proposed septic tank capacity
The resulting “A” must be divided by 3 to arrive at the length of a 3 foot wide trench with 1 foot
of filter material below the perforated pipe provided for the dispersal system. For trenches
proposing 2 feet of filter material below the pipe, “A” must be divided by 5 to arrive at the length
of trench. For trenches proposing 3 feet of filter material below the pipe, “A” must be divided by
7.
4.10 PERCOLATION TESTING FOR SEEPAGE PIT AND GRAVEL PACKED PIT
DISPERSAL SYSTEMS
Requirements
o The soil profile excavation hole shall be down-logged by a California Professional Civil Engineer,
California Professional Geologist, or California Certified Engineering Geologist unless reasonably
deemed unsafe by the QP. When reasonably deemed unsafe by the QP the required information
shall be obtained through alternative methods advised by the QP. When test holes are required
to be down-logged by the Building Division, a copy of the field data shall be submitted to the City.
o Results from the soil profile and percolation testing of different pits shall be accepted where the
proposed seepage pits locations are within 35 feet of the actual soil profile and percolation testing
area, where uniform geology has been established by a QP, except where the proposed seepage
pits are located in bedrock/hardpan/fractured rock formation.
o Every seepage pit located in bedrock, hardpan or fractured rock formation shall be tested to
establish percolation rates for each individual pit.
o Where proposed future expansion areas are in bedrock, hardpan or fractured rock formation, the
future pits shall be tested to establish percolation rates for each individual pit.
o When one pit is marginally dispersing water and it has to be supplemented with more pit(s) to
achieve the required septic tank capacity, each pit shall be tested for the entire 8 hours to assess
the exact capability of the pit(s) and to ensure 10-feet drop can be achieved at the end of the
tests.
o When proposing a cluster system comprised of numerous pits, the QP may request for
reconsideration of this requirement in light of sufficient data that might support an alternative
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scope of testing. Such data should be presented to the local office prior to commencing the test
procedure, in order to reach an agreement as to the scope of testing that will be required.
o The water metered in shall be under pressure and shall be metered in constantly through a hose
with a minimum of 1½ inch in diameter. A written certification, confirming that the water meter
used for the percolation test has been calibrated and certified within the last 12 months prior to
the date of the test shall be made available during the test for verification purposes and submitted
with the feasibility report.
o A decrease in the effective height of the seepage pit due to a cap level adjustment after
percolation test has been completed shall require an additional percolation test in order to
demonstrate adequate absorption and the 10 feet of drop can be successfully achieved.
o The covering and securing of any open test excavations/borings/pits shall be in conformance with
Building Division’s requirements.
Procedures
1. A circular boring with a minimum 2 foot diameter and maximum 6 foot diameter shall be
excavated to the anticipated depth of the seepage pit for percolation testing purposes. Approval
shall be obtained prior to construction of any pit having an excavated diameter greater than 6
feet. No pits shall be finished, bricked or capped, without prior authorization by the City. If a
seepage pit is to be installed, it will be necessary to secure a permit for the installation of a test
pit from Building Division.
2. Presoak the test pit by filling it with clear water up to the proposed level of the inlet and allow it
to permeate for 24 hours. The water drop after 24-hour presoak period shall equal or exceed 10
feet. Seepage pits shall not be permitted when the observed water drop is less than 10 feet in 24
hours
When percolation testing holes cannot be filled to presoak or to conduct a conventional
percolation test due to drainage of water from the hole, the test may be stopped once a volume
of water equal or greater than the nominal volume of the hole has been metered in during the
presoak test or a volume equal or greater than 5 times the required tank capacity has been
metered in during the percolation test. In this case the maximum absorption capacity allowed by
the OWTS Ordinance is considered to be exceeded and an alternative OWTS is required. The
feasibly report shall include the volume of water dispersed, the percolation rate and the required
calculations.
3. At or before 24 hours later, after a successful presoak achieving a minimum 10 feet drop, the level
of the water remaining in the pit is measured and considered the starting level for the percolation
testing (Zero Level). Then, clear water under constant pressure is continuously metered into the
test pit to the proposed cap level through a hose with a minimum diameter size, corresponding
with the water meter being used. The water is allowed to drop for equal intervals of 30 to 60
minutes. The water level shall be measured and documented after each equal interval during the
8-hour period. The pit is re-filled with water to the cap level after each drop. At the end of the 8-
hour testing, the pit is filled back up with water to the cap level for one final time.
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4. Twenty-four (24) hours after the start of the 8-hour testing period or 16 hours after the end of
percolation test, the water level in the test pit shall be measured to determine that there has
been at least a 10 feet drop in the water. The volume of water dispersed during the percolation
test is computed based on the “effective height”, which is measured by subtracting the height
(level) of the remaining water from the cap level. The total amount of water that percolated into
the soil is then calculated by subtracting the volume of water remaining in the test pit from the
total volume of water metered into the test pit over the 8-hour testing period.
5. After completion of the percolation test, where water is remaining at the bottom of the test pit,
the test pit shall be periodically monitored for the next 16 hours by a QP to observe the fluctuation
in water level, lack of absorption or any infiltration of the subsurface water into test pit to rule
out the possibility of mounding and to observe whether the remaining water has been partially
or completely dissipated. The geologist shall explain why the remaining water in the test pit after
24 hours from the start of the testing will not adversely affect the dispersal of expected
wastewater load and attest that mounding will not occur in future. For the intent of this section,
mounding is defined as any elevation in water level, above the level recorded after 24 hours from
the start of the 8 hour percolation test.
Calculation
The percolation rate is calculated by adding the sum of the surface area of the bottom of the pit and
sidewall area of the seepage pit that absorbed the water (total area of sidewall shall be calculated based
on the “effective height” as described under number 4 above). Then the total number of gallons of water
that the pit absorbed is divided by the sum of the areas; the result is the percolation rate.
The seepage pit(s) must have an interstitial storage volume large enough to hold five times the
capacity of the septic tank divided by the total volume of water absorbed. Available storage shall
exclude the volume of the rock particles (i.e. pore volume only). Seepage pit engineered plans
shall show calculations for interstitial volume capacity based on specified rock fill voids.
When volumetric determinations are being made for testing in a two foot boring, credit will be
given for 23.5 gallons per vertical foot that the water drops.
The volume of water absorbed by the 2 feet diameter test hole may be adjusted to a larger volume
based on the ratio of the side wall surface areas:
o A 4 feet diameter pit would be given credit for 2 times the volume percolated in a 2 feet
diameter test hole.
o A 5 feet diameter pit would be given credit for 2.5 times the volume percolated in a 2 feet
diameter test hole.
o A 6 feet diameter pit would be given credit for 3 times the volume percolated in a 2 feet
diameter test hole.
Sidewall determinations are based on the boring diameter. Volumetric calculations are based on
the liner diameter. The pilot hole for reaming out a pit is not calculated in the sizing of a pit and
shall not extend to within 10 feet of the level of groundwater.
Seepage pits shall be constructed with 6 inches of washed gravel between the pit lining and the
excavated sidewall and shall have an excavated diameter of not less than four 4 feet.
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4.11 ALTERNATIVE ONSITE WASTEWATER TREATMENT SYSTEMS
Alternative OWTS are used to overcome specific site constraints that limit the use of a conventional OWTS.
Typically, the most significant site constraint resulting in the need for alternative treatment is a lack of
adequate soil depth below the dispersal field. Alternative OWTS utilize either a method of wastewater
treatment other than a conventional septic tank and/or a method of wastewater dispersal other than a
conventional leach field or seepage pit for the purpose of producing a higher quality wastewater effluent
and improved effluent dispersal performance and siting options.
Alternative OWTS must be designed by a qualified professional in conformance with the provision set
forth on the LAMP, the City’s OWTS Ordinance and State guidelines.
Prior to final approval, the property owner shall be required to record a deed restriction indicating that
an alternative system has been installed on the property. This notification shall run with the land and will
act as constructive notice to any future property owner that the property is served by an alternative OWTS
and is therefore subject to an operating permit with regular maintenance, monitoring and reporting
requirements. A copy of the recorded document and an operation and maintenance contract with a QP
shall be provided to the City before final system approval.
To ensure that the system continues to function properly, a qualified service provider must inspect the
system at least annually. Maintenance frequencies will be directed based upon manufacturer
specifications or industry standards. Inspection reports must be submitted to the City by the QP detailing
the findings of the inspection within 30 days of its completion so that the City can track routine inspections
and document the owner conducting the required maintenance.
Vertical Separation to Groundwater
The minimum depth to the anticipated highest level of groundwater below the bottom of the leaching
trench, and the native soil depth immediately below the leaching trench, shall not be less than
prescribed in Table 4.11.1.
Table 4.11.1 Minimum Vertical Separation to Groundwater for Alternative OWTS Dispersal Systems
and required wastewater constituents treated
Type of Dispersal System Minimum Vertical Separation to Groundwater
2 feet* 3 feet* 5 feet* 10 feet*
Mound System BOD, TSS, TN,
Disinfection
Supplemental
Treatment Not
Required
Supplemental
Treatment Not
Required
At-Grade System
Supplemental
Treatment Not
Required
Supplemental
Treatment Not
Required
Type of Dispersal System Minimum Vertical Separation to Groundwater
2 feet* 3 feet* 5 feet* 10 feet*
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Conventional Dispersal
Trench more than 10
feet total depth
BOD, TSS, TN,
Disinfection BOD, TSS, TN BOD, TSS, TN
Raised Sand Filter Bed w/
Supplemental Treatment
BOD, TSS, TN,
Disinfection BOD, TSS, TN N/A N/A
Conventional Seepage Pit
for replacement systems - - -
Supplemental
Treatment Not
Required
Seepage Pit w/
Supplemental Treatment BOD, TSS, TN,
Disinfection BOD, TSS, TN
Shallow Pressure
Distribution - -
Supplemental
Treatment Not
Required
Supplemental
Treatment Not
Required
Shallow Pressure
Distribution w/
Supplemental Treatment
BOD, TSS, TN,
Disinfection BOD, TSS, TN N/A N/A
Shallow Drip Dispersal w/
Supplemental Treatment
BOD, TSS, TN,
Disinfection BOD, TSS, TN N/A N/A
* Measured from the bottom of the dispersal trench, bed or piping (in the case of drip dispersal).
Horizontal Setback Distances for Alternative OWTS
Horizontal setback distances for alternative OWTS should be the same as those specified for conventional
septic tanks and dispersal systems in Appendix F to the extent practical. The qualified professional
designing the alternative OWTS shall indicate how the proposed alternative OWTS component(s) will
allow for a horizontal setback reduction without compromising water quality and/or public health.
For new OWTS, installed on parcels of record existing at the time of the effective date of this LAMP that
cannot meet the above horizontal separation requirements, the OWTS shall meet the horizontal
separation to the greatest extent practicable and shall utilize supplemental treatment and any other
mitigation measures that are prescribed by the City if it is determined by the City Engineer that the
reduced setback may result in an increased risk to water quality and/or public health.Alternative OWTS
with Supplemental Treatment Systems
Supplemental treatment is generally required to be incorporated into an OWTS when effluent quality has
potential to impact groundwater or surface water, or when use of an alternative dispersal system is
necessary to overcome a limiting site constraint and requires an alternative dispersal system with clarified
effluent to prevent clogging of the system. A variety of supplemental treatment technologies are available
to meet specific objectives. In addition to meeting site and design requirements, alternative OWTS
utilizing supplemental treatment shall be designed to meet the minimum effluent constituent limitations
specified by Table 4.11.2.
Biological Oxygen Demand (BOD), Total Suspended Solids (TSS), Fats, Oils & Greases (FOG) and Total
Nitrogen (TN) are constituents in wastewater that can be measured to evaluate the relative strength of
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wastewater. High concentrations of BOD, TSS and FOG are known to contribute to increased OWTS failure
rates by creating a clogging mat along the infiltrative surface of the dispersal system. Total nitrogen is
first converted to ammonium in an OWTS, then to nitrite and finally nitrate. Hydrophilic, water-loving
nitrate bonds with water and is carried through the soil, eventually coming into contact with groundwater.
The maximum allowable concentration of BOD, TSS and TN varies depending upon the type dispersal
system proposed and the distance between the bottom of the dispersal system and groundwater and is
specified by Table 4.11.2. FOG is not commonly monitored in residential OWTS and therefore, no
standards are proposed with this LAMP.
Table 4.11.2 Effluent Constituent Limitations for Supplemental Treatment Systems
Type of Dispersal System
Average Effluent Concentrations (mg/L)
5-Day Biological
Oxygen Demand
(BOD)3
30-Day Average
Total Suspended
Solids (TSS)3
Total Nitrogen (TN)1,2,3
Conventional Dispersal
Systems with required
supplemental treatment,
including seepage pits
30 30 50% reduction or 25 mg/L,
whichever is lower
Drip Dispersal Systems 20 20
Not required when vertical
separation to groundwater
per Table 4.3.1 can be met,
otherwise 50% reduction or
25 mg/L, whichever is lower.
Alternative Dispersal Systems
Installed to Overcome
Minimum Horizontal
Setbacks to Groundwater,
per Table 4.3.1.
30 30 50% reduction or 25 mg/L,
whichever is lower
1 Determined as the sum of nitrate-nitrogen plus total kjeldahl
nitrogen
2 Unless specifically required by this LAMP, supplemental treatment systems are not required to meet
effluent limitations for Total Nitrogen.
3 Detection limits for constituents are as follows: BOD = 2 mg/L; TSS = 5 mg/L; TN = 1 mg/L
When disinfection is required, the add-on component to the supplemental treatment system shall be
designed to meet a minimum fecal coliform concentration of 200 Mean Probable Number (MPN) per 100
milliliters, log mean value. Disinfection units shall be operated in accordance with manufacturer
recommendations and NSF Standard 46. UV disinfection systems may require additional reduction of TSS
and BOD to meet manufacturer specifications.
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Alternative OWTS Installation Requirements
Any component of an alternative OWTS must be installed by a qualified professional that is
certified to install the specific alternative OWTS component proposed and the system must be
installed according to specifications for location, components, size and depth specified by the
qualified professional that designed the system.
An alternative OWTS treatment unit tank shall include a sample tap on the dosing pump discharge
line or other suitable location as agreed upon by the City for effluent sampling.
All components of the alternative OWTS shall be qualified in writing by the qualified professional
who designed the system that the installation was completed per the approved design. This
written qualification must meet the satisfaction of the City prior to final inspection of the system.
Subsurface Drip Systems
All wastewater discharged to a subsurface drip system shall have supplemental treatment. Subsurface
drip dispersal systems are a special category of pressure distribution. When site conditions warrant, a
subsurface drip system may be utilized in lieu of a standard dispersal field. Subsurface drip systems must
be designed and installed by a qualified professional. The maximum slope allowed for the installation of
a drip dispersal system shall be 50 percent.
The drip fields must be placed in native soil, unless fill material has been specifically engineered for that
purpose, and installed as level as possible and parallel to elevation contours. Up to 12 inches of fill may
be placed over the drip lines in order to meet the minimum cover requirements. The amount of soil cover
may be reduced to six inches if the wastewater has been treated to meet the STS requirements of this
document for Disinfection. The area of the drip dispersal system shall be designed, located and
maintained to prevent vehicular traffic over it and planted with appropriate vegetation upon installation
to allow for uptake of nutrients from the wastewater.
The setbacks for subsurface drip systems shall be the same as for conventional dispersal fields. Under no
circumstances shall a drip system be installed that will result in adverse effects to a building, structure, or
improvements which are located on the subject property or offsite. If a reduced tree setback is proposed,
an arborist or other qualified professional must prepare a report indicating that neither the tree nor the
subsurface drip system would be negatively impacted by the setback reduction.
Additional drip dispersal system design and installation standards that shall be required are as follows:
Head loss calculations shall be provided to ensure proper hydraulic pressure at the emitter since
drip dispersal systems are pressure distribution systems.
Emitter lines shall be designed as a continuous loop circuit with no dead-ends.
Vacuum release valves shall be installed at the highpoint of the emitter lines.
The maximum emitter longitudinal spacing on an emitter line shall be two feet. The maximum
spacing between adjacent emitter lines in an absorption bed configuration shall be two feet.
Emmitters on adjacent lines shall be staggered in position to achieve more uniform distribution
of the effluent.
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Drip dispersal systems shall be time dosed over a 24-hour period. Demand control dosing shall
override timed dosing in periods of flow where timed dosing cannot accommodate the excessive
flow.
Drip dispersal systems shall be designed to have a minimum operating pressure at the emitter
head of 10 pounds per square inch (“psi”), a maximum operating pressure of 45 psi, a maximum
system operation pressure of 60 psi, and a maximum discharge rate per emitter of 1.5 gallons per
hour.
All drip dispersal systems shall incorporate an automatic mechanism for backwashing or flushing
the drip lines and filters.
Because drip dispersal systems vary in design and operation among manufacturers, it is required
that all drip dispersal systems be designed, installed and operated in accordance with
manufacturers recommendations.
Use of Proprietary Alternative OWTS
The City must approve any proposed method of supplemental treatment prior to approval for use within
the City of Atascadero LAMP area. All supplemental treatment systems submitted for City approval must
be tested and certified by an independent testing organization such as NSF. Part of the testing must
include an evaluation of the system’s effectiveness in reducing TSS, BOD and TN. Any supplemental
treatment system shall be listed by the testing organization and treatment standard before being
considered for permitting. Listing standards include, but are not limited to:
• NSF Standard 40-Residential: Onsite Systems
• NSF Standard 41- Non-Liquid Systems (composting toilets)
• NSF Standard 245- Nitrogen Reduction
• NSF Standard 350 & 350-1: Onsite Water Reuse
• NSF Standard 46: Components and Devices
The treatment objectives dictated by the site limitations determines which standard or standards may be
applicable.
Advanced or alternative OWTS components designed to perform disinfection shall provide sufficient
pretreatment of the wastewater so that effluent from the supplemental treatment components does not
exceed a 30-day average total suspended solids of 30 milligrams per liter and shall further achieve an
effluent fecal coliform bacteria concentration less than or equal to 200 Most Probable Number (“MPN”)
per 100 millimeters.
A manufacturer, distributer or other applicant may request that the City review a particular proprietary
alternative OWTS for conformance with the City’s minimum requirements by submitting to the City a
“Request for Service” application with a deposit to cover staff time to review the application materials in
accordance with such fees as are adopted by the City Council. The application materials may include, but
are not limited to the following:
• NSF certification
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• Product specifications, design standards and treatment objectives
• Installation manual
• Sample Operation & Maintenance manual
• Sample Service Contract
• List of Qualified Service Providers in the City of Atascadero
• Parts and/or service distributor information
• List of jurisdictions where the system is currently approved for use
Supplemental Treatment Systems Maintenance Contract
Because supplemental treatment is used as a mitigation factor to overcome site constraints such as high
groundwater or shallow soils, it is essential that the treatment system receive regular maintenance by a
qualified professional to ensure that it is operating as designed. The City requires that a maintenance
contract be signed and in place prior to final inspection of the system. An agreement is to remain in
force for the life of the supplemental treatment system.
Alternative OWTS Deed Restriction
Prior to the City of Atascadero’s final inspection of an alternative dispersal systems or supplemental
treatment unit, the owner must record a notice of the installation of the system or component in the
Office of the Recorder of the County of San Luis Obispo. This notice shall run with the land and is intended
to serve as notice to all future owners that the property is served by an alternative OWTS that is subject
to operating permits as a well as maintenance, monitoring and reporting requirements. The owner must
provide a copy of the recorded document to the City of Atascadero as a prerequisite to the final inspection.
Alternative OWTS Operating Permit
Operating permits will be required for OWTS that utilize an alternative dispersal system or supplemental
treatment unit to ensure that they are functioning properly and as designed. Permit conditions would
require regular (at a minimum, annual) inspection of the system by a Qualified Professional at recurring
intervals. Water quality testing may be required for on-site potable water wells and/or community water
systems to monitor groundwater conditions as deemed necessary by the City of Atascadero. A report
detailing the findings of the inspection must be submitted to City of Atascadero for review in accordance
with the operating permit conditions. An OWTS inspection report, as required by the provisions of this
LAMP, should be developed and submitted for review and approval by the City of Atascadero.
4.12 LIMITATIONS ON SUB-DIVISIONS PROPOSING TO UTILIZE OWTS
Land development projects including Conditional Use Permits and parcel sub-division projects where
public sewer is not available and that are proposed after the effective date of the LAMP, as adopted by
the City of Atascadero and approved by the Central Coast RWQCB, shall not exceed a density of one (1)
OWTS per 0.5 acres and be supported by the findings of a QP which shall be documented in a Feasibility
Report.
Minimum lot size as shown in Table 1 of the OWTS Policy, is based upon protection of water resources
from nitrate and pathogen degradation. As noted in Section 2.8, Private Wells, the majority of private
domestic wells within the City of Atascadero are located on parcels which could not be subdivided to a
greater density than one (1) OWTS per 2.5 acres. There are currently no domestic wells on parcels less
than 1.0 acre in size within the City.
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Determination of maximum average lot density for new subdivisions proposing OWTS systems shall be
based upon PRISM parcel-level precipitation data. Precipitation data shall be obtained from the PRISM
Climate Group (http://www.prism.oregonstate.edu/explorer/), using the 30-year PRISM normal data
from the most recent 30-years data, with 800 meter resolution. Average lot densities are to be based
upon Table 4.12.1. When a subdivision is proposed within the City which would create an average lot
density greater than the density in 4.12.1, the City will require an additional OWTS analysis as part of the
feasibility report which provides technical justification (Fate and Transport analysis or equal as approved
by City Engineer) that the proposed OWTS system will not degrade water resources beyond the property
boundaries.
Table 4.12.1. Allowable Average Densities per Subdivision
4.13 ONSITE WASTEWATER TREATMENT SYSTEMS IN DEGRADED BASINS
If the City or Central Coast Water Board identifies a groundwater basin or sub-basin where the use of
OWTS in Atascadero is causing or contributing to significant degradation, the City will develop an
Advanced Groundwater Protection Management Program in close consultation with and approved by
the Central Coast Water Board. During development of the Advanced Groundwater Protection
Management Program, the City and the Central Coast Water Board shall work together to identify
geographical limits of OWTS’s contributing to groundwater degradation. The requirements of the
Advanced Groundwater Protection Management Program shall be limited to those OWTS’s
demonstrated to be significantly contributing to groundwater degradation. The Advanced Groundwater
Protection Management Program shall provide the same level of protection as Sections 10.9-10.6 of the
Tier 3 standards in the OWTS Policy and may include but not be limited to: supplemental treatment for
all new and replacement systems, mandatory, routine inspections and maintenance, connection to the
public sewer, shallow groundwater monitoring, or other appropriate actions. The requirements for
existing systems will be consistent with Tier 4 of the Policy. Supplemental treatment standards will be
equivalent to those contained in LAMP Section 4.11. Variances from the prohibitions specified in
sections 9.4.1 – 9.4.9 of the OWTS Policy are not allowed in areas covered by an Advanced Groundwater
Protection Management Program.
Average Annual Rainfall (in/yr) Allowable Density (acres/single family dwelling unit)
0 - 15 2.5
>15-20 2
>20-25 1.5
>25-35 1.0
>35-40 .75
>40 0.5
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PART 5 REPAIR / REPLACEMENT OF EXISTING OWTS
5.1 EXISTING FUNCTIONING OWTS
Consistent with the criteria outlined in Tier 0 of the OWTS Policy, systems that are functioning properly
will not be affected by this LAMP for as long for as they continue to function properly. Nevertheless,
regular inspection and maintenance is necessary to ensure that an OWTS continues to operate
satisfactorily and to extend the life of the system. OWTS that fail will be repaired consistent with the
criteria outlined in Tier 4 of the OWTS Policy and City standards.
The current practice of voluntary maintenance for standard systems will continue as the cornerstone of
an ongoing inspection program for the vast majority of systems. As in the past, whenever an OWTS is
serviced, a QP shall examine the tank to look for signs of deterioration, corrosion or evidence that the
dispersal field has failed or is in the process of failing. In conjunction with the service call, the QPshall
prepare a written report that includes the property owner’s name and address, a description of the system
and any deficiencies noted during the inspection. In the event that the QP determines that the OWTS
requires a major repair or replacement, then a report must be submitted to the City within 30 days of the
date of the servicing/inspection. A copy of the approved inspection form can be found in Appendix G. In
those cases where the inspection has found that the system has failed, the report must be submitted
within 24 hours.
When the report is received by the City, it will be reviewed and the information contained in the report
shall be entered into the City database. If the report identifies any deficiencies, a notice will be generated
and mailed to the property owner. Depending on the severity of the problem, the notice will either
recommend that corrective action be taken or direct that corrective action be taken. A list of the most
common tank deficiencies is provided in Appendix K.
5.2 FAILED OWTS
The primary functions of the voluntary inspection program are to assure that the individuals who service
and inspect OWTS are qualified to do so and that failing OWTS are identified and repaired. In addition to
failures, the inspection may identify conditions that would lead to a determination that the system is in a
state of failure. These conditions range from the most severe and obvious form of failure such as surfacing
effluent, to the less obvious sign of effluent backing up into a structure.
As with the installation of a new system, all repairs to an existing OWTS must be performed by a Qualified
Contractor and must meet current standards. In cases of a failure that creates a health & safety hazard
or nuisance where effluent is discharging to the surface of the ground, repairs must be made immediately.
When it has been determined that a system is failing or has failed and the City has a permit record, the
replacement dispersal field shall meet the requirements for a conventional dispersal system as described
in previous sections of this document. In the event that the replacement system cannot meet the subject
requirements, then an Alternative OWTS will be required and be subject to the requirements included in
this LAMP..
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A replacement system that meets the requirements of the provisions of this LAMP and the City’s OWTS
Ordinance shall be installed in those instances when the OWTS has failed and were previously permitted
or considered legal non-conforming but the site is severely constrained. If site conditions preclude the
installation of a new dispersal field that meets the adopted standards, supplemental treatment may be
required if necessary to provide treatment equivalent to the adopted standard.
For replacement OWTS that do not meet the specified horizontal separation requirements (Appendix F),
the replacement OWTS shall meet the horizontal separation to the greatest extent practicable. In such
cases, the replacement OWTS shall utilize supplemental treatment and other mitigation measures, unless
the City finds that there is no indication that the previous system is adversely affecting the public water
source, and there is limited potential that the replacement system could impact the water source based
on topography, soil depth, soil texture, and groundwater separation.
5.3 OWTS REPAIRS & UPGRADES
Certain corrective measures shall be taken when an inspection finds a substandard OWTS or a component
thereof that requires repair and or upgrade to meet current standards. Examples of typical failures or
conditions that lead to failure (or in some cases to threats to human safety) include:
Hollow (non-gravel filled) seepage pits and cesspools. These are a significant threat to ground
water and a physical threat due to the tendency to collapse. They shall be properly abandoned,
repaired or replaced upon discovery.
Severely damaged or deteriorated tanks, bottomless tanks, redwood tanks, brick tanks or
otherwise non-watertight tanks shall be replaced with one that meets the City and State
standards.
5.4 EXISTING ONSITE OWTS EVALUATION / MODIFICATION
Existing functioning OWTS that would otherwise be expected to continue to function properly may
become over taxed when homes are remodeled or expanded in a manner than increases the sewage flow
or changes the characteristics of the sewage generated. When a building remodel will increase the flow,
the OWTS should be upgraded so that the anticipated new flow can be received and managed reliably.
Examples of changes in a residence that would indicate an increased flow to the system include the
addition of a bedroom. Examples of changes in a commercial facility that would indicate an increased flow
would include increased building occupancy or fixtures. For information regarding addition of secondary
dwelling units, see Section 4.3.
Additionally, improvements on a property that intrude upon the physical location of the OWTS and the
expansion area for the dispersal system would trigger the need for review. The determination for the need
for a system modification is made as part of an evaluation of the existing system by the City. As part of
the evaluation the City reviews the proposed changes or project, any City records of the existing system
as well as any additional information/data provided by the applicant. If it is concluded that there is no
impact or that the existing system is adequate, no modification is required.
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5.5 OWTS ABANDONMENT STANDARDS
Unless properly abandoned, an out-of-service OWTS represents a safety hazard. The top and lids of a
septic tank or the cement cover of a hollow seepage pit deteriorate over time and may collapse should a
vehicle drive or an individual walk over it leading to a serious injury or death. Therefore, the City makes
it a priority to ensure that these structures are properly abandoned to prevent such accidents.
An existing OWTS or a portion thereof shall be properly abandoned, under the following conditions:
• Upon the discovery of a hollow seepage pit or cesspool
• When the structure is connected to the public sewer or
• When the structure served by the OWTS is demolished unless the owner demonstrates their
intention to use the system again.
The abandonment standards for a septic tank include:
• The tank or pit must be pumped to remove all contents.
• A tank may be removed entirely or, if left in place, the top is removed, the bottom punctured
or cracked to allow for drainage and the shell filled with inert material such as clean soil, sand,
cement, Pea-gravel, or drain rock..
Standards for abandoning the dispersal field include:
• Seepage pits are to be excavated to a depth of 2 feet below grade and the center pipe cut.
The center pipe and the excavation are then to be backfilled with clean soil or other approved
fill material.
• Leach lines composed of gravel and pipe may be abandoned in place by disconnecting from
the system and capping / filling the abandoned pipe..
• If hollow chambers were used, the chambers must be removed and backfilled with inert soil
or other suitable material to be approved by the City. Hollow leaching chambers may remain
in place with City approval.
PART 6 SPECIAL OWTS MANAGEMENT ISSUES
6.1 EDUCATION AND OUTREACH
An OWTS is a significant investment for the property owner and a potential health hazard to the public if
the system is poorly designed or fails. This is especially so with the increased costs of newer systems that
depend on supplemental treatment. Yet, there is a lot of myth and misinformation about how to take care
of and maintain OWTS. Education and outreach is vital to supporting an informed consumer who is better
able to assure proper maintenance that reduces the chance of failure.
Direct Staff Contact
The primary method of education and outreach is by direct interaction between City staff and the public.
The City routinely receives and responds to phone calls and office visits by private property owners,
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consultants and contractors with questions about the regulations and or the permit process. As part of
the City’s role in the planning process, we will regularly answer questions and provide information to
consultants, staff from other departments or agencies and occasionally directly to decision makers such
as members of the Planning Commission and the Atascadero City Council.
City of Atascadero Website
All OWTS permit application forms and instructions are available on the City website. In addition to the
forms, the City posts or provides links to the various regulations such as the applicable sections of the
Central Coast RWQCB’s Basin Plan and the City’s OWTS Ordinance. Additionally, there is general
information on the website about proper OWTS maintenance.
Stakeholder/Community Meetings
Stakeholder or community meetings are generally conducted as outreach efforts for significant or
important projects such as the writing/implementation of new regulations or for projects such as this
LAMP. The number of meetings will vary depending on the nature of the project that is being discussed
however a general protocol is usually followed.
• A meeting is convened at the outset to explain the goals and objectives of the project, answer
questions and to gather comments and concerns from the attendees. If the project is area
specific, the community meeting is held at a venue close to the area under discussion.
• Depending on the length of time that will be required to complete the project, status or progress
meetings will be held to update interested parties. In lieu or a meeting, progress or status reports
may be distributed electronically.
• When the project has been completed and a draft report prepared, a second round of meetings
are scheduled to present the findings and to take questions and comments.
• Occasionally, extensive modifications of the draft report are necessary due to volume and or
nature of the comments received. When this occurs, another round of meetings is convened to
again present the report, highlight the changes and take questions and listen to comments.
Ongoing Education
The City of Atascadero is committed to identifying and implementing opportunities to collaborate with
other interest groups such as the California Onsite Wastewater Association (COWA), homeowners’
organizations, real estate groups, and the building industry to provide reliable and accurate information
about septic system functioning and proper maintenance. See Appendix L for a sample OWTS educational
flyer.
The City has proposed using Supplemental Treatment as a mitigating measure when seepage pits are
used, for increasing OWTS density and in those instances when it is not possible to install a system that
meets City of Atascadero conventional OWTS standards. While the use of such systems will require
operating permits with routine, ongoing inspection and maintenance, owner education on how these
systems work and the importance of maintenance will be necessary. Therefore the City will work with
representatives from the industry to develop appropriate education materials that will be provided to the
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property owner when the operating permit is issued. These materials will be made available to the public
through links which are placed on the City’s website
The education and outreach program can be updated and expanded by the City over time, subject to
funding authorization from the Atascadero City Council, to include OWTS related actions such as:
• Emphasize the need to prevent fats, oil and grease from entering the OWTS. Include information
on how fats, oil and grease should be managed, avoiding discharge to the OWTS, and information
on where the resident may take such waste for proper disposal.
• Discourage the use of garbage disposal units and explain the reasons to system users, namely:
o they contribute substantial quantities of detrimental solids to the wastewater load,
increasing the rate of sludge and scum accumulation in the septic tank;
o this results in a greater need for and frequency of septage removal; and
o it results in higher amounts of solids and BOD discharged to disposal field, increasing the
potential for soil clogging and system failure.
• Maintain a current list of qualified septic tank pumper/haulers within the City of Atascadero, for
easy reference.
• Update description of OWTS maintenance, inspection and reporting requirements.
• Provide educational information on the environmental concerns related to disposal of unused
pharmaceuticals, including advice on appropriate handling and disposal practices. Discourage
disposal of unused pharmaceuticals into OWTS. Notify the public where such materials can be
taken to for proper disposal, including taking unused pharmaceuticals back to any local pharmacy.
• Provide information to residents not to flush items such as dental floss, feminine hygiene
products, condoms and other plastics, diapers, cotton swabs, cigarette butts, coffee grounds, cat
litter, paper towels, and hazardous chemicals.
• Provide information on the availability and benefits of low-flow plumbing fixtures and other high
efficiency water saving devices. This would be done in coordination with the AMWC.
• Inform the public of the benefits of fixing leaky plumbing, thus conserving water, saving on water
costs, and reducing load to the OWTS.
• Provide information on the environmental concerns related to water softener brine discharges,
including a list of suitable alternatives to conventional onsite self-regenerating water softeners.
• Advise the public to minimize or refrain from using caustic drain openers to un-clog drains. Such
chemicals are harmful to bacteria in the septic tank and can upset the biological system necessary
for sewage treatment.
6.2 ENFORCEMENT
The City of Atascadero has a well-established ordinance and procedure related to OWTS code
enforcement. It should be noted that the City’s OWTS Ordinance may be updated and revised periodically
in response to the City’s experience in applying the previsions set forth in this LAMP and to accommodate
the development of new technologies. Initiating enforcement action is generally used only when all other
means to correct a problem or a violation have failed. However there are situations such as when there
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is a threat to public health and safety, that enforcement action must be implemented immediately. The
circumstances or conditions that would result in the City initiating enforcement are described below.
Failure to Obtain a Permit
The OWTS Ordinance requires that a permit be obtained before an OWTS is constructed, repaired,
modified or abandoned. It further states that it is unlawful to cover, conceal or put into use an OWTS or
any part thereof, without having first obtained an inspection and final approval from the City.
Should the City be made aware of or discover that an OWTS is being installed, modified, repaired or
abandoned without a permit, the matter shall be referred to the City Code Enforcement Office for
appropriate action. All information required as part of the application as well as the established fee, must
be submitted before work may commence.
An OWTS that was installed, modified, repaired or abandoned without benefit of a permit and inspection
has no legal standing. Should the City discover or be made aware of a system that was constructed or
modified “after the fact” the property owner would be required to submit the standard application and
supporting documents (percolation tests, soil evaluation etc.) to obtain a permit. The owner would also
have to provide evidence that the work met current standards or repeat the work in order to satisfy the
City that system meets all applicable provisions of the OWTS Ordinance.
It is important to note that there was no requirement for a permit to construct an OWTS until the 1950’s.
While one would expect that a system that old would be in need of repair that may not be the case.
Consequently, OWTS installed before permits were required are considered as prior non-conforming and
may be used as long as it continues to function as intended except when it is determined that these
antiquated systems are using a cesspool or a hollow seepage pit. These excavations must be abandoned
or repaired immediately.
If an OWTS was repaired or abandoned without a permit, the property owner must provide sufficient
evidence that the work was completed to the satisfaction of the City. Such evidence might include a letter
from the QI that performed the work, QP, photographs of the work, bills for materials and supplies etc.
Surface Effluent
When the City responds to a confirmed complaint of surfacing sewage, the property owner is notified to
pump the tank immediately. The City may issue a Notice of Violation indicating that the septic tank must
be continually pumped as needed to prevent surfacing effluent until the necessary OWTS repair or
replacement is made under a valid permit from the City.
When a structure is tenant-occupied and the effluent is unable to be contained by either pumping the
tank or damming/berming the sewage to prevent negative impacts to water quality or the environment,
it may be necessary to prohibit occupancy and give a notice to vacate determined by the City. The tenant
is notified that water use in the structure should be strictly limited to prevent further contamination of
the surrounding environment. Every effort is made to contact the property owner to have the tank
pumped and initiate an OWTS repair permit application. In such situations, a Notice of Violation is posted
on the dwelling and a copy is mailed to the property owner’s address on file with the City of Atascadero.
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Notwithstanding the provisions of this LAMP, all code enforcement matters shall be implemented with
the existing City procedures.
Inspection/Maintenance
As described in previous sections of this LAMP, the City does not require ongoing, routine inspections of
standard (conventional) OWTS. However, it does require that any time an OWTS is serviced the tank is to
be inspected for signs of deterioration and other system deficiencies. In addition, a report detailing the
results of the inspection is to be submitted to the City within 30 days unless the system is in a state of
failure. Under those circumstances the report must be submitted within 24 hours.
If the report identifies any deficiencies, a tiered enforcement response is implemented. Initially, a notice
is generated and mailed to the property owner. Depending on the severity of the problem, the notice will
either recommend corrective action or direct that a repair of the OWTS be completed by a specified date.
If the property owner makes the necessary repairs, then no further action is taken. Should the property
owner not take the needed action, a second notice is sent.
The majority of property owners make the needed repairs after receiving the Second Notice. In those
cases when the property owner fails to comply with the Second Notice by the stated deadline, the City
will implement the next enforcement tier and issue a Notice of Violation. The Notice of Violation contains
essentially the same information as the previous notices but it more emphatically states that the property
owner is in violation of the provisions of this LAMP and the City’s OWTS Ordinance and corrective action
is necessary to avoid additional enforcement measures. If a property owner fails to take remedial action
after receiving a second Notice of Violation, the City will issue a Notice of Determination of Fine (NDF).
The NDF will list the violation(s) and the dates and types of the previous notices that were sent to the
owner. The NDF then states that as a result of the lack of compliance with those previous notices, an
administrative fine of a specified amount has been assessed. The NDF explains that the recipient has ten
days to appeal the assessment and outlines the steps to make an appeal. If no appeal is received by the
deadline, the Determination of Fine is final.
The goal of an enforcement action is to correct a violation. The assessment of a fine does not end the
matter as abatement of the violation is still required. A continued failure to correct the violation would
result in another enforcement action leading to a potential second fine or the initiation of civil action.
6.3 SEPTAGE MANAGEMENT
Septage is the partially treated waste from an OWTS. It generally consists of all the wastes that are
disposed of through a structure’s plumbing system that neither drain out into the soil nor are converted
to gases by the bacteria in the tank. In the septic tank where primary treatment takes place the waste
separates into three distinct layers; the upper scum layer, the middle clarified layer and the lower sludge
layer.
Over time the scum and sludge layers accumulates to the point where the biologically active clarified area
is minimized. When this occurs the tank should be pumped. The liquid waste pumped from the tank is
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referred to as septage. Septage is essentially sewage and like sewage must be disposed of in a manner
that protects public health.
The Septage Pumping Program is overseen by San Luis Obispo County Environmental Health Services
Department. All septic tank waste shall be handled, hauled and disposed of in accordance with County
Code Title 8, and all applicable State Laws. All septic pumpers in San Luis Obispo County shall have a
current permit with the Department of Environmental Health Services. Whenever a septic tank is
pumped, all septage shall be removed from both sides of the tank and transported to a facility approved
for the disposal of septage. Septage shall never be released on the surface of the ground, into any sewer
manway or cleanout, or into any storm drain.
6.4 CESSPOOL DISCONTINUANCE AND PHASE-OUT
The use of cesspools for sewage disposal is not authorized under the OWTS Ordinance. Cesspools are
deemed failing systems and must be immediately corrected. Due to the age of many homes in the City
(>50 years old) a number of cesspools still exist and continue to be discovered from time-to-time.
Historically, discovery and abandonment of existing cesspools has come about: (a) voluntarily by the
property owner, (b) in response to complaints, or (c) through OWTS inspections associated with property
transfers or building addition or remodeling projects. In the City, the Septage Pumper reporting
requirements is expected to accelerate the identification and gradual phase-out of the remaining
cesspools in the county.
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APPENDIX A
SWRCB OWTS POLICY
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State of California
Edmund G. Brown Jr., Governor
California Environmental Protection Agency
Matthew Rodriquez, Secretary
State Water Resources Control Board
http://www.waterboards.ca.gov
Charles R. Hoppin, Chair
Frances Spivy-Weber, Vice Chair
Tam M. Doduc, Member
Steven Moore, Member
Thomas Howard, Executive Director
Jonathan Bishop, Chief Deputy Director
Caren Trgovcich, Chief Deputy Director
Adopted by the State Water Resources Control Board on June 19, 2012
Approved by the Office of Administrative Law on November 13, 2012
Effective Date of the Policy: May 13, 2013
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Preamble – Purpose and Scope – Structure of the Policy
1
Preamble
Onsite wastewater treatment systems (OWTS) are useful and necessary structures that
allow habitation at locations that are removed from centralized wastewater treatment
systems. When properly sited, designed, operated, and maintained, OWTS treat
domestic wastewater to reduce its polluting impact on the environment and most
importantly protect public health. Estimates for the number of installations of OWTS in
California at the time of this Policy are that more than 1.2 million systems are installed
and operating. The vast majority of these are functioning in a satisfactory man ner and
meeting their intended purpose.
However there have been occasions in California where OWTS for a varied list of
reasons have not satisfactorily protected either water quality or public health. Some
instances of these failures are related to the OWTS not being able to adequately treat
and dispose of waste as a result of poor design or improper site conditions. Others
have occurred where the systems are operating as designed but their densities are
such that the combined effluent resulting from multiple systems is more than can be
assimilated into the environment. From these failures we must learn how to improve
our usage of OWTS and prevent such failures from happening again.
As California’s population continues to grow, and we see both increased rural housing
densities and the building of residences and other structures in more varied terrain than
we ever have before, we increase the risks of causing environmental damage and
creating public health risks from the use of OWTS. What may have been effective in
the past may not continue to be as conditions and circumstances surrounding particular
locations change. So necessarily more scrutiny of our installation of OWTS is
demanded of all those involved, while maintaining an appropriate balance of only the
necessary requirements so that the use of OWTS remains viable.
Purpose and Scope of the Policy
The purpose of this Policy is to allow the continued use of OWTS, while protecting water
quality and public health. This Policy recognizes that responsible local agencies can
provide the most effective means to manage OWTS on a routine basis. Therefore as
an important element, it is the intent of this policy to efficiently utilize and improve upon
where necessary existing local programs through coordination between the State and
local agencies. To accomplish this purpose, this Policy establishes a statewide, risk-
based, tiered approach for the regulation and management of OWTS installations and
replacements and sets the level of performance and protection expected from OWTS.
In particular, the Policy requires actions for water bodies specifically identified as part
this Policy where OWTS contribute to water quality degradation that adversely affect
beneficial uses.
This Policy only authorizes subsurface disposal of domestic strength, and in limited
instances high strength, wastewater and establishes minimum requirements for the
permitting, monitoring, and operation of OWTS for protecting beneficial uses of waters
ITEM NUMBER: C-1
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of the State and preventing or correcting conditions of pollution and nuisance. And
finally, this Policy also conditionally waives the requirement for owners of OWTS to
apply for and receive Waste Discharge Requirements in order to operate their systems
when they meet the conditions set forth in the Policy. Nothing in this Policy supersedes
or requires modification of Total Maximum Daily Loads or Basin Plan prohibitions of
discharges from OWTS.
This Policy also applies to OWTS on federal, state, and Tribal lands to the extent
authorized by law or agreement.
Structure of the Policy
This Policy is structured into ten major parts:
Definitions
Definitions for all the major terms used in this Policy are provided within this part and
wherever used in the Policy the definition given here overrides any other possible
definition.
[Section 1]
Responsibilities and Duties
Implementation of this Policy involves individual OWTS owners; local agencies, be they
counties, cities, or any other subdivision of state government with permitting powers
over OWTS; Regional Water Quality Control Boards; and the State Water Resources
Control Board.
[Sections 2, 3, 4, and 5]
Tier 0 – Existing OWTS
Existing OWTS that are properly functioning, and do not meet the conditions of failing
systems or otherwise require corrective action (for example, to prevent groundwater
impairment) as specifically described in Tier 4, and are not determined to be
contributing to an impairment of surface water as specifically described in Tier 3, are
automatically included in Tier 0.
[Section 6]
Tier 1 – Low-Risk New or Replacement OWTS
New or replacement OWTS that meet low risk siting and design requirements as
specified in Tier 1, where there is not an approved Local Agency Management Program
per Tier 2.
[Sections 7 and 8]
Tier 2 – Local Agency Management Program for New or Replacement OWTS
California is well known for its extreme range of geological and climatic conditions. As
such, the establishment of a single set of criteria for OWTS would either be too
restrictive so as to protect for the most sensitive case, or would have broad allowan ces
that would not be protective enough under some circumstances. To accommodate this
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extreme variance, local agencies may submit management programs (“Local Agency
Management Programs”) for approval, and upon approval then manage the installation
of new and replacement OWTS under that program.
Local Agency Management Programs approved under Tier 2 provide an alternate
method from Tier 1 programs to achieve the same policy purpose, which is to protect
water quality and public health. In order to address local conditions, Local Agency
Management Programs may include standards that differ from the Tier 1 requirements
for new and replacement OWTS contained in Sections 7 and 8. As examples, a Local
Agency Management Program may authorize different soil characteristics, usage of
seepage pits, and different densities for new developments. Once the Local Agency
Management Program is approved, new and replacement OWTS that are included
within the Local Agency Management Program may be approved by the Local Agency.
A Local Agency, at its discretion, may include Tier 1 standards within its Tier 2 Local
Agency Management Program for some or all of its jurisdiction. However, once a Local
Agency Management Program is approved, it shall supersede Tier 1 and all future
OWTS decisions will be governed by the Tier 2 Local Agency Management Program
until it is modified, withdrawn, or revoked.
[Section 9]
Tier 3 – Impaired Areas
Existing, new, and replacement OWTS that are near impaired water bodies may be
addressed by a TMDL and its implementation program , or special provisions contained
in a Local Agency Management Program. If there is no TMDL or special provisions,
new or replacement OWTS within 600 feet of impaired water bodies listed in Attachment
2 must meet the specific requirements of Tier 3.
[Section 10]
Tier 4 – OWTS Requiring Corrective Action
OWTS that require corrective action or are either presently failing or fail at any time
while this Policy is in effect are automatically included in Tier 4 and must follow the
requirements as specified.
[Section 11]
Conditional Waiver of Waste Discharge Requirements
The requirement to submit a report of waste discharge for discharges from OWTS that
are in conformance with this policy is waived.
[Section 12]
Effective Date
When this Policy becomes effective.
[Section 13]
Financial Assistance
Procedures for local agencies to apply for funds to establish low interest loan programs
for the assistance of OWTS owners in meeting the requirements of this Policy.
[Section 14]
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Attachment 1
AB 885 Regulatory Program Timelines.
Attachment 2
Tables 4 and 5 specifically identify those impaired water bodies that have Tier 3
requirements and must have a completed TMDL by the date specified.
Attachment 3
Table 6 shows where one Regional Water Board has been designated to review and, if
appropriate, approve new Local Agency Management Plans for a local agency that is
within multiple Regional Water Boards’ jurisdiction.
What Tier Applies to my OWTS?
Existing OWTS that conform to the requirements for Tier 0 will remain in Tier 0 as long
as they continue to meet those requirements. An existing OWTS will temporarily move
from Tier 0 to Tier 4 if it is determined that corrective action is needed. The existing
OWTS will return to Tier 0 once the corrective action is completed if the repair does not
qualify as major repair under Tier 4. Any major repairs conducted as corrective action
must comply with Tier 1 requirements or Tier 2 requirements, whichever are in effect for
that local area. An existing OWTS will move from Tier 0 to Tier 3 if it is adjacent to an
impaired water body listed on Attachment 2, or is covered by a TMDL implementation
plan.
In areas with no approved Local Agency Management Plan, new and replacement
OWTS that conform to the requirements of Tier 1 will remain in Tier 1 as long as they
continue to meet those requirements. A new or replacement OWTS will temporarily
move from Tier 1 to Tier 4 if it is determined that corrective action is needed. The new
or replacement OWTS will return to Tier 1 once the corrective action is completed. A
new or replacement OWTS will move from Tier 1 to Tier 3 if it is adjacent to an impaired
water body, or is covered by a TMDL implementation plan.
In areas with an approved Local Agency Management Plan, new and replacement
OWTS that conform to the requirements of the Tier 2 Local Agency Management Plan
will remain in Tier 2 as long as they continue to meet those requirements. A new or
replacement OWTS will temporarily move from Tier 2 to Tier 4 if it is determined that
corrective action is needed. The new or replacement OWTS will return to Tier 2 once
the corrective action is completed. A new or replacement OWTS will move from Tier 2
to Tier 3 if it is adjacent to an impaired water body, or is covered by a TMDL
implementation plan, or is covered by special provisions for impaired water bodies
contained in a Local Agency Management Program .
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Existing, new, and replacement OWTS in specified areas adjacent to water bodies that
are identified by the State Water Board as impaired for pathogens or nitrogen and listed
in Attachment 2 are in Tier 3. Existing, new, and replacement OWTS covered by a
TMDL implementation plan, or covered by special provisions for impaired water bodies
contained in a Local Agency Management Program are also in Tier 3. These OWTS
will temporarily move from Tier 3 to Tier 4 if it is determined that corrective action is
needed. The new or replacement OWTS will return to Tier 3 once the corrective action
is completed.
Existing, new, and replacement OWTS that do not conform with the requirements to
receive coverage under any of the Tiers (e.g., existing OWTS with a projected flow of
more than 10,000 gpd) do not qualify for this Policy’s conditional waiver of waste
discharge requirements, and will be regulated separately by the applicable Regional
Water Board.
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Definitions
6
1.0 Definitions. The following definitions apply to this Policy:
“303 (d) list” means the same as "Impaired Water Bodies."
“At-grade system” means an OWTS dispersal system with a discharge point located
at the preconstruction grade (ground surface elevation). The discharge from an at -
grade system is always subsurface.
“Average annual rainfall” means the average of the annual amount of precipitation for
a location over a year as measured by the nearest National Weather Service station
for the preceding three decades. For example the data set used to make a
determination in 2012 would be the data from 1981 to 2010.
“Basin Plan” means the same as “water quality control plan” as defined in Division 7
(commencing with Section 13000) of the Water Code. Basin Plans are adopted by
each Regional Water Board, approved by the State Water Board and the Office of
Administrative Law, and identify surface water and groundwater bodies within each
Region’s boundaries and establish, for each, its respective beneficial uses and water
quality objectives. Copies are available from the Regional Water Boards ,
electronically at each Regional Water Boards website, or at the State Water Board’s
Plans and Policies web page (http://www.waterboards.ca.gov/plans_policies/).
“Bedrock” means the rock, usually solid, that underlies soil or other unconsolidated,
surficial material.
“CEDEN” means California Environmental Data Exchange Network and information
about it is available at the State Water Boards website or
http://www.ceden.org/index.shtml.
“Cesspool” means an excavation in the ground receiving domestic wastewater,
designed to retain the organic matter and solids, while allowing the liquids to seep
into the soil. Cesspools differ from seepage pits because cesspool systems do not
have septic tanks and are not authorized under this Policy. The term cesspool does
not include pit-privies and out-houses which are not regulated under this Policy.
“Clay” means a soil particle; the term also refers to a type of soil texture. As a soil
particle, clay consists of individual rock or mineral particles in soils having diameters
<0.002 mm. As a soil texture, clay is the soil material that is comprised of 40
percent or more clay particles, not more than 45 percent sand and not more than 40
percent silt particles using the USDA soil classification system.
“Cobbles” means rock fragments 76 mm or larger using the USDA soil classification
systems.
“Dispersal system” means a leachfield, seepage pit, mound, at-grade, subsurface drip
field, evapotranspiration and infiltration bed, or other type of system for final
wastewater treatment and subsurface discharge.
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“Domestic wastewater” means wastewater with a measured strength less then high-
strength wastewater and is the type of wastewater normally discharged from, or
similar to, that discharged from plumbing fixtures, appliances and other household
devices including, but not limited to toilets, bathtubs, showers, laundry f acilities,
dishwashing facilities, and garbage disposals. Domestic wastewater may include
wastewater from commercial buildings such as office buildings, retail stores, and
some restaurants, or from industrial facilities where the domestic wastewater is
segregated from the industrial wastewater. Domestic wastewater may include
incidental RV holding tank dumping but does not include wastewater consisting of a
significant portion of RV holding tank wastewater such as at RV dump stations.
Domestic wastewater does not include wastewater from industrial processes.
“Dump Station” means a facility intended to receive the discharge of wastewater from
a holding tank installed on a recreational vehicle. A dump station does not include a
full hook-up sewer connection similar to those used at a recreational vehicle park.
“Domestic well” means a groundwater well that provides water for human
consumption and is not regulated by the California Department of Public Health.
“Earthen material” means a substance composed of the earth’s crust (i.e. soil and
rock).
“EDF” see “electronic deliverable format.”
“Effluent” means sewage, water, or other liquid, partially or completely treated or in its
natural state, flowing out of a septic tank, aerobic treatment unit, dispersal system,
or other OWTS component.
“Electronic deliverable format” or “EDF” means the data standard adopted by the
State Water Board for submittal of groundwater quality monitoring data to the State
Water Board’s internet-accessible database system Geotracker
(http://geotracker.waterboards.ca.gov/).
“Escherichia coli” means a group of bacteria predominantly inhabiting the intestines of
humans or other warm-blooded animals, but also occasionally found elsewhere.
Used as an indicator of human fecal contamination.
“Existing OWTS” means an OWTS that was constructed and operating prior to the
effective date of this Policy, and OWTS for which a construction permit has been
issued prior to the effective date of the Policy.
“Flowing water body” means a body of running water flowing over the earth in a
natural water course, where the movement of the water is readily discernible or if
water is not present it is apparent from review of the geology that when present it
does flow, such as in an ephemeral drainage, creek, stream, or river.
“Groundwater” means water below the land surface that is at or above atmospheric
pressure.
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Definitions
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“High-strength wastewater” means wastewater having a 30-day average
concentration of biochemical oxygen demand (BOD) greater than 300 milligrams-
per-liter (mg/L) or of total suspended solids (TSS) greater than 330 mg/L or a fats,
oil, and grease (FOG) concentration greater than 100 mg/L prior to the septic tank or
other OWTS treatment component.
“IAPMO” means the International Association of Plumbing and Mechanical Officials.
“Impaired Water Bodies” means those surface water bodies or segments thereof that
are identified on a list approved first by the State Water Board and then approved by
US EPA pursuant to Section 303(d) of the federal Clean Water Act.
“Local agency” means any subdivision of state government that has responsibility for
permitting the installation of and regulating OWTS within its jurisdictional boundaries;
typically a county, city, or special district.
“Major repair” means either: (1) for a dispersal system, repairs required for an OWTS
dispersal system due to surfacing wastewater effluent from the dispersal field and/or
wastewater backed up into plumbing fixtures because the dispersal system is not
able to percolate the design flow of wastewater associated with the structure served,
or (2) for a septic tank, repairs required to the tank for a compartment baffle failure
or tank structural integrity failure such that either wastewater is exfiltrating or
groundwater is infiltrating.
“Mottling” means a soil condition that results from oxidizing or reducing minerals due
to soil moisture changes from saturated to unsaturated over time. Mottling is
characterized by spots or blotches of different colors or shades of color (grays and
reds) interspersed within the dominant color as described by the USDA soil
classification system. This soil condition can be indicative of historic seasonal high
groundwater level, but the lack of this condition may not demonstrate the absence of
groundwater.
“Mound system” means an aboveground dispersal system (covered sand bed with
effluent leachfield elevated above original ground surface inside) used to enhance
soil treatment, dispersal, and absorption of effluent discharged from an OWTS
treatment unit such as a septic tank. Mound systems have a subsurface d ischarge.
“New OWTS” means an OWTS permitted after the effective date of this Policy.
“NSF” means NSF International (a.k.a. National Sanitation Foundation), a not for profit,
non-governmental organization that develops health and safety standards and
performs product certification.
“Oil/grease interceptor” means a passive interceptor that has a rate of flow exceeding
50 gallons-per-minute and that is located outside a building. Oil/grease interceptors
are used for separating and collecting oil and grease from wastewater.
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ATTACHMENT: 2
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Definitions
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“Onsite wastewater treatment system(s)” (OWTS) means individual disposal
systems, community collection and disposal systems, and alternative collection and
disposal systems that use subsurface disposal. The short form of the term may be
singular or plural. OWTS do not include “graywater” systems pursuant to Health and
Safety Code Section 17922.12.
“Percolation test” means a method of testing water absorption of the soil. The test is
conducted with clean water and test results can be used to establish the dispersal
system design.
“Permit” means a document issued by a local agency that allows the installation and
use of an OWTS, or waste discharge requirements or a waiver of waste discharge
requirements that authorizes discharges from an OWTS.
“Person” means any individual, firm, association, organization, partnership, business
trust, corporation, company, State agency or department, or unit of local government
who is, or that is, subject to this Policy.
“Pit-privy” (a.k.a. outhouse, pit-toilet) means self-contained waterless toilet used for
disposal of non-water carried human waste; consists of a shelter built above a pit in
the ground into which human waste falls.
“Policy” means this Policy for Siting, Design, Operation and Management of OWTS.
“Pollutant” means any substance that alters water quality of the waters of the State to
a degree that it may potentially affect the beneficial uses of water, as listed in a
Basin Plan.
“Projected flows” means wastewater flows into the OWTS determined in accordance
with any of the applicable methods for determining average daily flow in the USEPA
Onsite Wastewater Treatment System Manual, 2002, or for Tier 2 in accordance
with an approved Local Agency Management Program.
“Public Water System” is a water system regulated by the California Department of
Public Health or a Local Primacy Agency pursuant to Chapter 12, Part 4, California
Safe Drinking Water Act, Section 116275 (h) of the California Health and Safety
Code.
“Public Water Well” is a ground water well serving a public water system. A spring
which is not subject to the California Surface Water Treatment Rule (SWTR), CCR,
Title 22, sections 64650 through 64666 is a public well.
“Qualified professional” means an individual licensed or certified by a State of
California agency to design OWTS and practice as professionals for other
associated reports, as allowed under their license or registration . Depending on the
work to be performed and various licensing and registration requirements, this may
include an individual who possesses a registered environmental health specialist
certificate or is currently licensed as a professional engineer or professional
geologist. For the purposes of performing site evaluations, Soil Scientists certified by
the Soil Science Society of America are considered qualified professionals. A local
agency may modify this definition as part of its Local Agency Management Program.
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“Regional Water Board” is any of the Regional Water Quality Control Boards
designated by Water Code Section 13200. Any reference to an action of the
Regional Water Board in this Policy also refers to an action of its Executive Officer,
including the conducting of public hearings, pursuant to any general or specific
delegation under Water Code Section 13223.
“Replacement OWTS” means an OWTS that has its treatment capacity expanded, or
its dispersal system replaced or added onto, after the effective date of this Policy.
“Sand” means a soil particle; this term also refers to a type of soil texture. As a soil
particle, sand consists of individual rock or mineral particles in soils having
diameters ranging from 0.05 to 2.0 millimeters. As a soil texture, sand is soil that is
comprised of 85 percent or more sand particles, with the percentage of silt plus 1.5
times the percentage of clay particles comprising less than 15 percent.
“Seepage pit” means a drilled or dug excavation, three to six feet in diameter, either
lined or gravel filled, that receives the effluent discharge from a septic tank or other
OWTS treatment unit for dispersal.
“Septic tank” means a watertight, covered receptacle designed for primary treatment
of wastewater and constructed to:
1. Receive wastewater discharged from a building;
2. Separate settleable and floating solids from the liquid;
3. Digest organic matter by anaerobic bacterial action;
4. Store digested solids; and
5. Clarify wastewater for further treatment with final subsurface discharge.
“Service provider” means a person capable of operating, monitoring, and maintaining
an OWTS in accordance to this Policy.
“Silt” means a soil particle; this term also refers to a type of soil texture. As a soil
particle, silt consists of individual rock or mineral particles in soils having diameters
ranging from between 0.05 and 0.002 mm. As a soil texture, silt is soil that is
comprised as approximately 80 percent or more silt particles and not more than 12
percent clay particles using the USDA soil classification system.
“Single-family dwelling unit” means a structure that is usually occupied by just one
household or family and for the purposes of this Policy is expected to generate an
average of 250 gallons per day of wastewater.
“Site” means the location of the OWTS and, where applicable, a reserve dispersal area
capable of disposing 100 percent of the design flow from all sources the OWTS is
intended to serve.
“Site Evaluation” means an assessment of the characteristics of the site sufficient to
determine its suitability for an OWTS to meet the requirements of this Policy.
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“Soil” means the naturally occurring body of porous mineral and organic materials on
the land surface, which is composed of unconsolidated materials, including sand -
sized, silt-sized, and clay-sized particles mixed with varying amounts of larger
fragments and organic material. The various combinations of particles differentiate
specific soil textures identified in the soil textural triangle developed by the United
States Department of Agriculture (USDA) as found in Soil Survey Staff, USDA; Soil
Survey Manual, Handbook 18, U.S. Government Printing Office, Washington, DC,
1993, p. 138. For the purposes of this Policy, soil shall contain earthen material of
particles smaller than 0.08 inches (2 mm) in size.
“Soil Structure” means the arrangement of primary soil particles into compound
particles, peds, or clusters that are separated by natural planes of wea kness from
adjoining aggregates.
“Soil texture” means the soil class that describes the relative amount of sand, clay, silt
and combinations thereof as defined by the classes of the soil textural triangle
developed by the USDA (referenced above).
“State Water Board” is the State Water Resources Control Board
“Supplemental treatment” means any OWTS or component of an OWTS, except a
septic tank or dosing tank, that performs additional wastewater treatment so that the
effluent meets a predetermined performance requirement prior to discharge of
effluent into the dispersal field.
“SWAMP” means Surface Water Ambient Monitoring Program and more information is
available at: http://www.waterboards.ca.gov/water_issues/programs/swamp/
“Telemetric” means the ability to automatically measure and transmit OWTS data by
wire, radio, or other means.
“TMDL” is the acronym for "total maximum daily load." Section 303(d)(1) of the Clean
Water Act requires each State to establish a TMDL for each impaired water body to
address the pollutant(s) causing the impairment. In California, TMDLs are usually
adopted as Basin Plan amendments and contain implementation plans detailing how
water quality standards will be attained.
“Total coliform” means a group of bacteria consisting of several genera belonging to
the family Enterobacteriaceae, which includes Escherichia coli bacteria.
“USDA” means the U.S. Department of Agriculture.
“Waste discharge requirement” or “WDR” means an operation and discharge permit
issued for the discharge of waste pursuant to Section 13260 of the California Water
Code.
ITEM NUMBER: C-1
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ATTACHMENT: 2
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Responsibilities and Duties
2.0 OWTS Owners Responsibilities and Duties
2.1 All new, replacement, or existing OWTS within an area that is subject to a
Basin Plan prohibition of discharges from OWTS, must comply with the
prohibition. If the prohibition authorizes discharges under specified conditions,
the discharge must comply with those conditions and the applicable provisions
of this Policy.
2.2 Owners of OWTS shall adhere to the requirements prescribed in local codes
and ordinances. Owners of new and replacement OWTS covered by this
Policy shall also meet the minimum standards contained in Tier 1, or an
alternate standard provided by a Local Agency Management Program per Tier
2, or shall comply with the requirements of Tier 3 if near an impaired water
body and subject to Tier 3, or shall provide corrective action for their OWTS if
their system meets conditions that place it in Tier 4.
2.3 Owners of OWTS shall comply with any and all permitting conditions imposed
by a local agency that do not directly conflict with this Policy, including any
conditions that are more stringent than required by this Policy.
2.4 To receive coverage under this Policy and the included waiver of waste
discharges, OWTS shall only accept and treat flows of domestic wastewater. In
addition, OWTS that accept high-strength wastewater from commercial food
service buildings are covered under this Policy and the waiver of waste
discharge requirements if the wastewater does not exceed 900 mg/L BOD and
there is a properly sized and functioning oil/grease interceptor (a.k.a grease
trap).
2.5 Owners of OWTS shall maintain their OWTS in good working condition
including inspections and pumping of solids as necessary, or as required by
local ordinances, to maintain proper function and assure adequate treatment.
2.6 The following owners of OWTS shall notify the Regional Water Board by
submitting a Report of Waste Discharge for the following:
2.6.1 a new or replacement OWTS that does not meet the conditions and
requirements set forth in either a Local Agency Management Program if
one is approved, an existing local program if it is less than 60 months from
the effective date of the Policy and a Local Agency Management Program
is not yet approved, or Tier 1 if no Local Agency Management Program
has been approved and it is more than 60 months after the effective date
of this Policy;
2.6.2 any OWTS, not under individual waste discharge requirements or a waiver
of individual waste discharge requirements issued by a Regional Water
Board, with the projected flow of over 10,000 gallons-per-day;
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2.6.3 any OWTS that receives high-strength wastewater, unless the waste
stream is from a commercial food service building;
2.6.4 any OWTS that receives high-strength wastewater from a commercial
food service building: (1) with a BOD higher than 900 mg/L, or (2) that
does not have a properly sized and functioning oil/grease interceptor.
2.7 All Reports of Waste Discharge shall be accompanied by the required
application fee pursuant to California Code of Regulations, title 23, section 2200.
3.0 Local Agency Requirements and Responsibilities
3.1 Local agencies, in addition to implementing their own local codes and
ordinances, shall determine whether the requirements within their local
jurisdiction will be limited to the water quality protection afforded by the
statewide minimum standards in Tier 0, Tier 1, Tier 3, and Tier 4, or whether
the local agency will implement a Local Agency Management Program in
accordance with Tier 2. Except for Tier 3, local agencies may continue to
implement their existing OWTS permitting programs in compliance with the
Basin Plan in place at the effective date of the Policy until 60 months after the
effective date of this Policy, or approval of a Local Agency Management
Program, whichever comes first, and may make minor adjustments as
necessary that are in compliance with the applicable Basin Plan and this Policy.
Tier 3 requirements take effect on the effective date of this Policy. In the
absence of a Tier 2 Local Agency Management Program, to the extent that
there is a direct conflict between the applicable minimum standards and the
local codes or ordinances (such that it is impossible to comply with both the
applicable minimum standards and the local ordinances or codes), the more
restrictive standards shall govern.
3.2 If preferred, the local agency may at any time provide the State Water Board
and all affected Regional Water Board(s) written notice of its intent to regulate
OWTS using a Local Agency Management Program with alternative standards
as authorized in Tier 2 of this Policy. A proposed Local Agency Management
Program that conforms to the requirements of that Section shall be included
with the notice. A local agency shall not implement a program different than
the minimum standards contained in Tier 1 and 3 of this Policy after 60 months
from the effective date of this Policy until approval of the proposed Local
Agency Management Program is granted by either the Regional Water Board
or State Water Board. All initial program submittals desiring approval prior to
the 60 month limit shall be received no later than 36 months from the effective
date of this Policy. Once approved, the local agency shall adhere to the Local
Agency Management Program, including all requirements, monitoring, and
reporting. If at any time a local agency wishes to modify its Local Agency
Management Program, it shall provide the State Water Board and all affected
Regional Water Board(s) written notice of its intended modifications and will
continue to implement its existing Local Agency Management Program until the
modifications are approved.
ITEM NUMBER: C-1
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Responsibilities and Duties
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3.3 All local agencies permitting OWTS shall report annually to the Regional Water
Board(s). If a local agency’s jurisdictional area is within the boundary of
multiple Regional Water Boards, the local agency shall send a copy of the
annual report to each Regional Water Board. The annual report shall include
the following information (organized in a tabular spreadsheet format) and
summarize whether any further actions are warranted to protect water quality or
public health:
3.3.1 number and location of complaints pertaining to OWTS operation and
maintenance, and identification of those which were investigated and how
they were resolved;
3.3.2 shall provide the applications and registrations issued as part of the local
septic tank cleaning registration program pursuant to Section 117400 et
seq. of the California Health and Safety Code;
3.3.3 number, location, and description of permits issued for new and
replacement OWTS and which Tier the permit is issued.
3.4 All local agencies permitting OWTS shall retain permanent records of their
permitting actions and will make those records available within 10 working days
upon written request for review by a Regional Water Board. The records for
each permit shall reference the Tier under which the permit was issued.
3.5 A local agency shall notify the owner of a public well or water intake and the
California Department of Public Health as soon as practicable, but not later
than 72 hours, upon its discovery of a failing OWTS as described in sections
11.1 and 11.2 within the setbacks described in sections 7.5.6 through 7.5.10.
3.6 A local agency may implement this Policy, or a portion thereof, using its local
authority to enforce the policy, as authorized by an approval from the State
Water Board or by the appropriate Regional Water Board.
3.7 Nothing in the Policy shall preclude a local agency from adopting or retaining
standards for OWTS in an approved Local Agency Management Program that
are more protective of the public health or the environment than are contained
in this Policy.
3.8 If at any time a local agency wishes to withdraw its previously submitted and
approved Tier 2 Local Agency Management Program, it may do so upon 60
days written notice. The notice of withdrawal shall specify the reason for
withdrawing its Tier 2 program, the effective date for cessation of the program
and resumption of permitting of OWTS only under Tiers 1, 3, and 4.
4.0 Regional Water Board Functions and Duties
4.1 The Regional Water Boards have the principal responsibility for overseeing the
implementation of this Policy.
4.2 Regional Water Boards shall incorporate the requirements established in this
Policy by amending their Basin Plans within 12 months of the eff ective date of
this Policy, pursuant to Water Code Section 13291(e). The Regional Water
ITEM NUMBER: C-1
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Responsibilities and Duties
15
Boards may also consider whether it is necessary and appropriate to retain or
adopt any more protective standards. To the extent that a Regional Water
Board determines that it is necessary and appropriate to retain or adopt any
more protective standards, it shall reconcile those region -specific standards with
this Policy to the extent feasible, and shall provide a detailed basis for its
determination that each of the more protective standards is necessary and
appropriate.
4.2.1 Notwithstanding 4.2 above, the North Coast Regional Water Board will
continue to implement its existing Basin Plan requirements pertaining to
OWTS within the Russian River watershed until it adopts the Russian
River TMDL, at which time it will comply with section 4.2 for the Russian
River watershed.
4.3 The Regional Water Board designated in Attachment 3 shall review, and if
appropriate, approve a Local Agency Management Program submitted by the
local agency pursuant to Tier 2 in this Policy. Upon receipt of a proposed Local
Agency Management Program, the Regional Water Board designated in
Attachment 3 shall have 90 days to notify the local agency whether the submittal
contains all the elements of a Tier 2 program, but may request additional
information based on review of the proposed program. Approval must follow a
noticed hearing with opportunity for public comment. If a Local Agency
Management Program is disapproved, the Regional Water Board designated in
Attachment 3 shall provide a written explanation of the reasons for the
disapproval. A Regional Water Board may approve a Local Agency
Management Program while disapproving any proposed special provisions for
impaired water bodies contained in the Local Agency Management Program. If
no action is taken by the respective Regional Water Board within 12 months of
the submission date of a complete Local Agency Management Program, the
program shall be forwarded to the State Water Board for review and approval
pursuant to Section 5 of this Policy.
4.3.1 Where the local agency’s jurisdiction lies within more than one Regional
Water Board, staff from the affected Regional Water Boards shall work
cooperatively to assure that water quality protection in each region is
adequately protected. If the Regional Water Board designated in
Attachment 3 approves the Local Agency Management Program over the
written objection of an affected Regional Water Board, that Regional
Water Board may submit the dispute to the State Water Board under
Section 5.3.
4.3.2 Within 30 days of receipt of a proposed Local Agency Management
Program, a Regional Water Board will forward a copy to and solicit
comments from the California Department of Public Health regarding a
Local Agency Management Program’s proposed policies and procedures,
including notification to local water purveyors prior to OWTS permitting.
4.4 Once a Local Agency Management Program has been approved, any affected
Regional Water Board may require modifications or revoke authorization of a
local agency to implement a Tier 2 program, in accordance with the following:
ITEM NUMBER: C-1
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4.4.1 The Regional Water Board shall consult with any other Regional Water
Board(s) having jurisdiction over the local agency before providing the
notice described in section 4.4.2.
4.4.2 Written notice shall be provided to the local agency detailing the Regional
Water Board’s action, the cause for such action, remedies to prevent the
action from continuing to completion, and appeal process and rights. The
local agency shall have 90 days from the date of the written notice to
respond with a corrective action plan to address the areas of non -
compliance, or to request the Regional Water Board to reconsider its
findings.
4.4.3 The Regional Water Board shall approve, approve conditionally, or deny a
corrective action plan within 90 days of receipt. The local agency will have
90 days to begin implementation of a corrective action plan from the date
of approval or 60 days to request reconsideration from the date of denial.
If the local agency fails to submit an acceptable corrective action plan,
fails to implement an approved corrective action plan, or request
reconsideration, the Regional Water Board may require modifications to
the Local Agency Management Program, or may revoke the local
agency’s authorization to implement a Tier 2 program.
4.4.4 Requests for reconsideration by the local agency shall be decide d by the
Regional Water Board within 90 days and the previously approved Local
Agency Management Program shall remain in effect while the
reconsideration is pending.
4.4.5 If the request for reconsideration is denied, the local agency may appeal
to the State Water Board and the previously approved Local Agency
Management Program shall remain in effect while the appeal is under
consideration. The State Water Board shall decide the appeal within 90
days. All decisions of the State Water Board are final.
4.5 The appropriate Regional Water Board shall accept and consider any requests
for modification or revocation of a Local Agency Management Program
submitted by any person. The Regional Water Board will notify the person
making the request and the local agency implementing t he Local Agency
Management Program at issue by letter within 90 days whether it intends to
proceed with the modification or revocation process per Section 4.4 above, or is
dismissing the request. The Regional Water Board will post the request and its
response letter on its website.
4.6 A Regional Water Board may issue or deny waste discharge requirements or
waivers of waste discharge requirements for any new or replacement OWTS
within a jurisdiction of a local agency without an approved Local Agency
Management Program if that OWTS does not meet the minimum standards
contained in Tier 1.
4.7 The Regional Water Boards will implement any notifications and enforcement
requirements for OWTS determined to be in T ier 3 of this Policy.
ITEM NUMBER: C-1
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ATTACHMENT: 2
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Responsibilities and Duties
17
4.8 Regional Water Boards may adopt waste discharge requirements, or
conditional waivers of waste discharge requirements, that exempt individual
OWTS from requirements contained in this Policy.
5.0 State Water Board Functions and Duties
5.1 As the state agency charged with the development and adoption of this Policy,
the State Water Board shall periodically review, amend and/or update this
Policy as required.
5.2 The State Water Board may take any action assigned to the Regional Water
Boards in this Policy.
5.3 The State Water Board shall resolve disputes between Regional Water Boards
and local agencies as needed within 12 months of receiving such a request by
a Regional Water Board or local agency, and may take action on its own
motion in furtherance of this Policy. As part of this function, the State Water
Board shall review and, if appropriate, approve Local Agency Management
Programs in cases where the respective Regional Water Board has failed to
consider for approval a Local Agency Management Program. The State Water
Board shall approve Local Agency Management Programs at a regularly
noticed board hearing and shall provide for public participation, including notice
and opportunity for public comment. Once taken up by the State Water Board,
Local Agency Management Programs shall be approved or denied within 180
days.
5.4 A member of the public may request the State Water Board to resolve any
dispute regarding the Regional Water Board’s approval of a Local Agency
Management Program if the member of the public timely raised the disputed
issue before the Regional Water Board. Such requests shall be submitted
within 30 days after the Regional Water Board’s approval of the Local Agency
Management Program. The State Water Board shall notify the member of the
public, the local agency, and the Regional Water Board within 90 days whether
it intends to proceed with dispute resolution.
5.5 The State Water Board shall accept and consider any requests for modification
or revocation of a Local Agency Management Program submitted by any
person, where that person has previously submitted said request to the
Regional Water Board and has received notice from the Regional Water Board
of its dismissal of the request. The State Water Board will notify the person
making the request and the local agency implementing the Local Agency
Management Program at issue by letter within 90 days whether it intends to
proceed with the modification or revocation process per Section 4.4 above, or
is dismissing the request. The State W ater Board will post the request and its
response letter on its website.
5.6 The State Water Board or its Executive Director, after approving any Impaired
Water Bodies [303 (d)] List, and for the purpose of implementing Tier 3 of this
Policy, shall update Attachment 2 to identify those water bodies where: (1) it is
likely that operating OWTS will subsequently be determined to be a contributing
ITEM NUMBER: C-1
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Responsibilities and Duties
18
source of pathogens or nitrogen and therefore it is anticipated that OWTS
would receive a loading reduction, and (2) it is likely that new OWTS
installations discharging within 600 feet of the water body would contribute to
the impairment. This identification shall be based on information available at
the time of 303 (d) listing and may be further updated based on new
information. Updates to Attachment 2 will be processed as amendments to
this Policy.
5.7 The State Water Board will make available to local agencies funds from its
Clean Water State Revolving Fund loan program for mini-loan programs to be
operated by the local agencies for the making of low interest loans to assist
private property owners with complying with this Policy.
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
Page 162 of 252
Tier 0 – Existing OWTS
19
Tier 0 – Existing OWTS
Existing OWTS that are properly functioning and do not meet the conditions of failing
systems or otherwise require corrective action (for example, to prevent groundwater
impairment) as specifically described in Tier 4, and are not determined to be
contributing to an impairment of surface water as specifically described in Tier 3, are
automatically included in Tier 0.
6.0 Coverage for Properly Operating Existing OWTS
6.1 Existing OWTS are automatically covered by Tier 0 and the herein included
waiver of waste discharge requirements if they meet the following
requirements:
6.1.1 have a projected flow of 10,000 gallons-per-day or less;
6.1.2 receive only domestic wastewater from residential or commercial
buildings, or high-strength wastewater from commercial food service
buildings that does not exceed 900 mg/L BOD and has a properly sized
and functioning oil/grease interceptor (a.k.a. grease trap);
6.1.3 continue to comply with any previously imposed permitting conditions;
6.1.4 do not require supplemental treatment under Tier 3;
6.1.5 do not require corrective action under Tier 4; and
6.1.6 do not consist of a cesspool as a means of wastewater disposal.
6.2 A Regional Water Board or local agency may deny coverage under this Policy
to any OWTS that is:
6.2.1 Not in compliance with Section 6.1;
6.2.2 Not able to adequately protect the water quality of the waters of the State,
as determined by the Regional Water Board after considering any input
from the local agency. A Regional Water Board may require the
submission of a report of waste discharge to receive Region specific
waste discharge requirements or waiver of waste discharge requirements
so as to be protective.
6.3 Existing OWTS currently under waste discharge requirements or individual
waiver of waste discharge requirements will remain under those orders until
notified in writing by the appropriate Regional Water Board that they are
covered under this Policy.
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
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Tier 1 – Low Risk New or Replacement OWTS
20
Tier 1 – Low Risk New or Replacement OWTS
New or replacement OWTS meet low risk siting and design requirements as specified in
Tier 1, where there is not an approved Local Agency Management Program per Tier 2.
7.0 Minimum Site Evaluation and Siting Standards
7.1 A qualified professional shall perform all necessary soil and site evaluations for
all new OWTS and for existing OWTS where the treatment or dispersal system
will be replaced or expanded.
7.2 A site evaluation shall determine that adequate soil depth is present in the
dispersal area. Soil depth is measured vertically to the point where bedrock,
hardpan, impermeable soils, or saturated soils are encountered or an adequate
depth has been determined. Soil depth shall be determined through the use of
soil profile(s) in the dispersal area and the designated dispersal system
replacement area, as viewed in excavations exposing the soil profiles in
representative areas, unless the local agency has determined through historical
or regional information that a specific site soil profile evaluation is unwarranted.
7.3 A site evaluation shall determine whether the anticipated highest level of
groundwater within the dispersal field and its required minimum dispersal zone
is not less than prescribed in Table 2 by estimation using one or a combination
of the following methods:
7.3.1 Direct observation of the highest extent of soil mottling observed in the
examination of soil profiles, recognizing that soil mottling is not always an
indicator of the uppermost extent of high groundwater; or
7.3.2 Direct observation of groundwater levels during the anticipated period of
high groundwater. Methods for groundwater monitoring and
determinations shall be decided by the local agency; or
7.3.3 Other methods, such as historical records, acceptable to the local agency.
7.3.4 Where a conflict in the above methods of examination exists, the direct
observation method indicating the highest level shall govern.
7.4 Percolation test results in the effluent disposal area shall not be faster than one
minute per inch (1 MPI) or slower than one hundred twenty minutes per inch
(120 MPI). All percolation test rates shall be performed by presoaking of
percolation test holes and continuing the test until a stabilized rate is achieved.
7.5 Minimum horizontal setbacks from any OWTS treatment component and
dispersal systems shall be as follows:
7.5.1 5 feet from parcel property lines and structures;
7.5.2 100 feet from water wells and monitoring wells, unless regulatory or
legitimate data requirements necessitate that monitoring wells be located
closer;
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
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Tier 1 – Low Risk New or Replacement OWTS
21
7.5.3 100 feet from any unstable land mass or any areas subject to earth slides
identified by a registered engineer or registered geologist; other setback
distance are allowed, if recommended by a geotechnical report prepared
by a qualified professional.
7.5.4 100 feet from springs and flowing surface water bodies where the edge of
that water body is the natural or levied bank for creeks and rivers, or may
be less where site conditions prevent migration of wastewater to the water
body;
7.5.5 200 feet from vernal pools, wetlands, lakes, ponds, or other surface water
bodies where the edge of that water body is the high water mark for lakes
and reservoirs, and the mean high tide line for tidally influenced water
bodies;
7.5.6 150 feet from a public water well where the depth of the effluent dispersal
system does not exceed 10 feet;
7.5.7 Where the effluent dispersal system is within 1,200 feet from a public
water systems’ surface water intake point, within the catchment of the
drainage, and located such that it may impact water quality at the intake
point such as upstream of the intake point for flowing water bodies, the
dispersal system shall be no less than 400 feet from the high water mark
of the reservoir, lake or flowing water body.
7.5.8 Where the effluent dispersal system is located more than 1,200 feet but
less than 2,500 feet from a public water systems’ surface water intake
point, within the catchment of the drainage, and located such that it may
impact water quality at the intake point such as upstream of the intake
point for flowing water bodies, the dispersal system shall be no less than
200 feet from the high water mark of the reservoir, lake or flowing water
body.
7.6 Prior to issuing a permit to install an OWTS the permitting agency shall
determine if the OWTS is within 1,200 feet of an intake point for a surface water
treatment plant for drinking water, is in the drainage catchment in which the
intake point is located, and located such that it may impact water quality at the
intake point such as being upstream of the intake point for a flowing water body.
If the OWTS is within 1,200 feet of an intake point for a surface water treatment
plant for drinking water, is in the drainage catchment in which the intake point is
located, and is located such that it may impact water quality at the intake point :
7.6.1 The permitting agency shall provide a copy of the permit application to the
owner of the water system of their proposal to install an OWTS within
1,200 feet of an intake point for a surface water treatment. If the owner of
the water system cannot be identified, then the permitting agency will
notify California Department of Public Health Drinking Water Program.
7.6.2 The permit application shall include a topographical plot plan for the parcel
showing the OWTS components, the property boundaries, proposed
structures, physical address, and name of property owner.
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
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Tier 1 – Low Risk New or Replacement OWTS
22
7.6.3 The permit application shall provide the estimated wastewater flows,
intended use of proposed structure generating the wastewater, soil data,
and estimated depth to seasonally saturated soils.
7.6.4 The public water system owner shall have 15 days from receipt of the
permit application to provide recommendations and comments to the
permitting agency.
7.7 Natural ground slope in all areas used for effluent disposal shall not be greater
than 25 percent.
7.8 The average density for any subdivision of property made by Tentative Approval
pursuant to the Subdivision Map Act occurring after the effective date of this
Policy and implemented under Tier 1 shall not exceed the allowable density
values in Table 1 for a single-family dwelling unit, or its equivalent, for those
units that rely on OWTS.
Table 1: Allowable Average Densities per Subdivision under Tier 1.
Average Annual Rainfall Allowable Density
(in/yr) (acres/single family dwelling unit)
0 - 15 2.5
>15 - 20 2
>20 - 25 1.5
>25 - 35 1
>35 - 40 0.75
>40 0.5
8.0 Minimum OWTS Design and Construction Standards
8.1 OWTS Design Requirements
8.1.1 A qualified professional shall design all new OWTS and modifications to
existing OWTS where the treatment or dispersal system will be replaced
or expanded. A qualified professional employed by a local agency, while
acting in that capacity, may design, review, and approve a design for a
proposed OWTS, if authorized by the local agency.
8.1.2 OWTS shall be located, designed, and constructed in a manner to ensure
that effluent does not surface at any time, and that percolation of effluent
will not adversely affect beneficial uses of waters of the State.
8.1.3 The design of new and replacement OWTS shall be based on the
expected influent wastewater quality with a projected flow not to exceed
3,500 gallons per day, the peak wastewater flow rates for purposes of
sizing hydraulic components, the projected average daily flow for
purposes of sizing the dispersal system, the characteristics of the site, and
the required level of treatment for protection of water quality and public
health.
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
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Tier 1 – Low Risk New or Replacement OWTS
23
8.1.4 All dispersal systems shall have at least twelve (12) inches of soil cover,
except for pressure distribution systems, which must have at least six (6)
inches of soil cover.
8.1.5 The minimum depth to the anticipated highest level of groundwater below
the bottom of the leaching trench, and the native soil depth immediately
below the leaching trench, shall not be less than prescribed in Table 2.
Table 2: Tier 1 Minimum Depths to Groundwater and Minimum Soil
Depth from the Bottom of the Dispersal System
Percolation Rate Minimum Depth
Percolation Rate ≤1 MPI Only as authorized in a Tier 2 Local Agency
Management Program
1 MPI< Percolation Rate ≤ 5
MPI
Twenty (20) feet
5 MPI< Percolation Rate ≤ 30
MPI
Eight (8) feet
30 MPI< Percolation Rate ≤
120 MPI
Five (5) feet
Percolation Rate > 120 MPI Only as authorized in a Tier 2 Local Agency
Management Program
MPI = minutes per inch
8.1.6 Dispersal systems shall be a leachfield, designed using not more than 4
square-feet of infiltrative area per linear foot of trench as the infiltrative
surface, and with trench width no wider than 3 feet. Seepage pits and
other dispersal systems may only be authorized for repairs where siting
limitations require a variance. Maximum application rates shall be
determined from stabilized percolation rate as provided in Table 3, or from
soil texture and structure determination as provided in Table 4.
8.1.7 Dispersal systems shall not exceed a maximum depth of 10 feet as
measured from the ground surface to the bottom of the trench.
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
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Tier 1 – Low Risk New or Replacement OWTS
24
Table 3: Application Rates as Determined from Stabilized Percolation Rate
Percolation
Rate
(minutes
per Inch)
Application
Rate
(gallons
per day per
square
foot)
Percolation
Rate
(minutes
per Inch)
Application
Rate
(gallons
per day per
square
foot)
Percolation
Rate
(minutes
per Inch)
Application
Rate
(gallons
per day per
square
foot)
<1 Requires
Local
Manage-
ment
Program
31 0.522 61 0.197
1 1.2 32 0.511 62 0.194
2 1.2 33 0.5 63 0.19
3 1.2 34 0.489 64 0.187
4 1.2 35 0.478 65 0.184
5 1.2 36 0.467 66 0.18
6 0.8 37 0.456 67 0.177
7 0.8 38 0.445 68 0.174
8 0.8 39 0.434 69 0.17
9 0.8 40 0.422 70 0.167
10 0.8 41 0.411 71 0.164
11 0.786 42 0.4 72 0.16
12 0.771 43 0.389 73 0.157
13 0.757 44 0.378 74 0.154
14 0.743 45 0.367 75 0.15
15 0.729 46 0.356 76 0.147
16 0.714 47 0.345 77 0.144
17 0.7 48 0.334 78 0.14
18 0.686 49 0.323 79 0.137
19 0.671 50 0.311 80 0.133
20 0.657 51 0.3 81 0.13
21 0.643 52 0.289 82 0.127
22 0.629 53 0.278 83 0.123
23 0.614 54 0.267 84 0.12
24 0.6 55 0.256 85 0.117
25 0.589 56 0.245 86 0.113
26 0.578 57 0.234 87 0.11
27 0.567 58 0.223 88 0.107
28 0.556 59 0.212 89 0.103
29 0.545 60 0.2 90 0.1
30 0.533 >90 - 120 0.1
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
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Tier 1 – Low Risk New or Replacement OWTS
25
Table 4: Design Soil Application Rates
(Source: USEPA Onsite Wastewater Treatment Systems Manual, February 2002)
Soil Texture
(per the USDA soil classification
system)
Soil Structure Shape Grade Maximum Soil
Application
Rate(gallons per
day per square
foot) 1
Coarse Sand, Sand, Loamy Coarse
Sand, Loamy Sand
Single grain Structureless 0.8
Fine Sand, Very Fine Sand, Loamy
Fine Sand, Loamy Very Fine Sand
Single grain Structureless 0.4
Coarse Sandy Loam, Sandy Loam Massive Structureless 0.2
Platy Weak 0.2
Moderate, Strong Prohibited
Prismatic, Blocky,
Granular
Weak 0.4
Moderate, Strong 0.6
Fine Sandy Loam, very fine Sandy
Loam
Massive Structureless 0.2
Platy Weak, Moderate, Strong Prohibited
Prismatic, Blocky,
Granular
Weak 0.2
Moderate, Strong 0.4
Loam Massive Structureless 0.2
Platy Weak, Moderate, Strong Prohibited
Prismatic, Blocky,
Granular
Weak 0.4
Moderate, Strong 0.6
Silt Loam Massive Structureless Prohibited
Platy Weak, Moderate, Strong Prohibited
Prismatic, Blocky,
Granular
Weak 0.4
Moderate, Strong 0.6
Sandy Clay Loam, Clay Loam, Silty
Clay Loam
Massive Structureless Prohibited
Platy Weak, Moderate, Strong Prohibited
Prismatic, Blocky,
Granular
Weak 0.2
Moderate, Strong 0.4
Sandy Clay, Clay, or Silty Clay Massive Structureless Prohibited
Platy Weak, Moderate, Strong Prohibited
Prismatic, Blocky,
Granular
Weak Prohibited
Moderate, Strong 0.2
1 Soils listed as prohibited may be allowed under the authority of the Regional Water Board, or as allowed under an
approved Local Agency Management Program per Tier 2.
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
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Tier 1 – Low Risk New or Replacement OWTS
26
8.1.8 All new dispersal systems shall have 100 percent replacement area that is
equivalent and separate, and available for future use.
8.1.9 No dispersal systems or replacement areas shall be covered by an
impermeable surface, such as paving, building foundation slabs, plastic
sheeting, or any other material that prevents oxygen transfer to the soil.
8.1.10 Rock fragment content of native soil surrounding the dispersal system
shall not exceed 50 percent by volume for rock fragments sized as
cobbles or larger and shall be estimated using either the point -count or
line-intercept methods.
8.1.11 Increased allowance for IAPMO certified dispersal systems is not allowed
under Tier 1.
8.2 OWTS Construction and Installation
8.2.1 All new or replacement septic tanks and new or replacement oil/grease
interceptor tanks shall comply with the standards contained in Sections
K5(b), K5(c), K5(d), K5(e), K5(k), K5(m)(1), and K5(m)(3)(ii) of Appendix
K, of Part 5, Title 24 of the 2007 California Code of Regulations.
8.2.2 All new septic tanks shall comply with the following requirements:
8.2.2.1 Access openings shall have watertight risers, the tops of which shall be
set at most 6 inches below finished grade; and
8.2.2.2 Access openings at grade or above shall be locked or secured to
prevent unauthorized access.
8.2.3 New and replacement OWTS septic tanks shall be limited to those
approved by the International Association of Plumbing and Mechanical
Officials (IAPMO) or stamped and certified by a California registered civil
engineer as meeting the industry standards, and their installation shall be
according to the manufacturer’s instructions.
8.2.4 New and replacement OWTS septic tanks shall be designed to prevent
solids in excess of three-sixteenths (3/16) of an inch in diameter from
passing to the dispersal system. Septic tanks that use a National
Sanitation Foundation/American National Standard Institute (NSF/ANSI)
Standard 46 certified septic tank filter at the final point of effluent
discharge from the OWTS and prior to the dispersal system shall be
deemed in compliance with this requirement.
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
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27
8.2.5 A Licensed General Engineering Contractor (Class A), General Building
Contractor (Class B), Sanitation System Contractor (Specialty Class C-
42), or Plumbing Contractor (Specialty Class C-36) shall install all new
OWTS and replacement OWTS in accordance with California Business
and Professions Code Sections 7056, 7057, and 7058 and Article 3,
Division 8, Title 16 of the California Code of Regulations. A property owner
may also install his/her own OWTS if the as-built diagram and the
installation are inspected and approved by the Regional Water Board or
local agency at a time when the OWTS is in an open condition (not
covered by soil and exposed for inspection).
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
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Tier 2 – Local Agency OWTS Management Program
28
Tier 2 – Local Agency OWTS Management Program
Local agencies may submit management programs for app roval, and upon approval
then manage the installation of new and replacement OWTS under that program. Local
Agency Management Programs approved under Tier 2 provide an alternate method
from Tier 1 programs to achieve the same policy purpose, which is to protect water
quality and public health. In order to address local conditions, Local Agency
Management Programs may include standards that differ from the Tier 1 requirements
for new and replacement OWTS contained in Sections 7 and 8. As examples, a Local
Agency Management Program may authorize different soil characteristics, usage of
seepage pits, and different densities for new developments. Once the Local Agency
Management Program is approved, new and replacement OWTS that are included
within the Local Agency Management Program may be approved by the Local Agency.
A Local Agency, at its discretion, may include Tier 1 standards within its Tier 2 Local
Agency Management Program for some or all of its jurisdiction. However, once a Local
Agency Management Program is approved, it shall supersede Tier 1 and all future
OWTS decisions will be governed by the Tier 2 Local Agency Management Program
until it is modified, withdrawn, or revoked.
9.0 Local Agency Management Program for Minimum OWTS Standards
The Local Agency Management Program for minimum OWTS Standards is a
management program where local agencies can establish minimum standards that are
differing requirements from those specified in Tier 1 (Section 7 and Section 8), including
the areas that do not meet those minimum standards and still achieve this Policy’s
purpose. Local Agency Management Programs may include any one or combination of
the following to achieve this purpose:
Differing system design requirements;
Differing siting controls such as system density and setback requirements;
Requirements for owners to enter monitoring and maintenance agreements;
and/or
Creation of an onsite management district or zone.
9.1 Where different and/or additional requirements are needed to protect water quality
the local agency shall consider the following, as well as any other conditions
deemed appropriate, when developing Local Agency Management Program
requirements:
9.1.1 Degree of vulnerability to pollution from OWTS due to hydrogeological
conditions.
9.1.2 High Quality waters or other environmental conditions requiring enhanced
protection from the effects of OWTS.
9.1.3 Shallow soils requiring a dispersal system installation th at is closer to
ground surface than is standard.
9.1.4 OWTS is located in area with high domestic well usage.
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9.1.5 Dispersal system is located in an area with fractured bedrock.
9.1.6 Dispersal system is located in an area with poorly drained soils.
9.1.7 Surface water is vulnerable to pollution from OWTS.
9.1.8 Surface water within the watershed is listed as impaired for nitrogen or
pathogens.
9.1.9 OWTS is located within an area of high OWTS density.
9.1.10 A parcel’s size and its susceptibility to hydraulic mounding, organic or
nitrogen loading, and whether there is sufficient area for OWTS expansion in
case of failure.
9.1.11 Geographic areas that are known to have multiple, existing OWTS
predating any adopted standards of design and construction includ ing
cesspools.
9.1.12 Geographic areas that are known to have multiple, existing OWTS located
within either the pertinent setbacks listed in Section 7.5 of this Policy, or a
setback that the local agencies finds is appropriate for that area.
9.2 The Local Agency Management Program shall detail the scope of its coverage,
such as the maximum authorized projected flows for OWTS, as well as a clear
delineation of those types of OWTS included within and to be permitted by the
program, and provide the local site evaluation, siting, design, and construction
requirements, and in addition each of the following:
9.2.1 Any local agency requirements for onsite wastewater system inspection,
monitoring, maintenance, and repairs, including procedures to ensure that
replacements or repairs to failing systems are done under permit from the
local governing jurisdiction.
9.2.2 Any special provisions applicable to OWTS within specified geographic
areas near specific impaired water bodies listed for pathogens or nitrogen.
The special provisions may be substantive and/or procedural, and may
include, as examples: consultation with the Regional Water Board prior to
issuing permits, supplemental treatment, development of a management
district or zone, special siting requirements, additional inspection and
monitoring.
9.2.3 Local Agency Management Program variances, for new installations and
repairs in substantial conformance, to the greatest extent practicable.
Variances are not allowed for the requirements stated in sections 9.4.1
through 9.4.9.
9.2.4 Any educational, training, certification, and/or licensing requirements that
will be required of OWTS service providers, site evaluators, designers,
installers, pumpers, maintenance contractors, and any other person
relating to OWTS activities.
9.2.5 Education and/or outreach program including informational materials to
inform OWTS owners about how to locate, operate, and maintain their
ITEM NUMBER: C-1
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OWTS as well as any Water Board order (e.g., Basin Plan prohibitions)
regarding OWTS restrictions within its jurisdiction. The education and/or
outreach program shall also include procedures to ensure that alternative
onsite system owners are provided an informational maintenance or
replacement document by the system designer or installer. This document
shall cite homeowner procedures to ensure maintenance, repair, or
replacement of critical items within 48 hours following failure. If volunteer
well monitoring programs are available within the local agency’s
jurisdiction, the outreach program shall include information on how well
owners may participate.
9.2.6 An assessment of existing and proposed disposal locations for septage,
the volume of septage anticipated, and whether adequate capacity is
available.
9.2.7 Any consideration given to onsite maintenance districts or zones.
9.2.8 Any consideration given to the development and implementation of , or
coordination with, Regional Salt and Nutrient Management Plans.
9.2.9 Any consideration given to coordination with watershed management
groups.
9.2.10 Procedures for evaluating the proximity of sewer systems to new or
replacement OWTS installations.
9.2.11 Procedures for notifying the owner of a public water system prior to
issuing an installation or repair permit for an OWTS, if the OWTS is within
1,200 feet of an intake point for a surface water treatment plant for
drinking water, is in the drainage area catchment in which the intake point
is located, and is located such that it may impact water quality at the
intake point such as upstream of the intake point for a flowing water body,
or if the OWTS is within a horizontal sanitary setback from a public well.
9.2.12 Policies and procedures that will be followed when a proposed OWTS
dispersal area is within the horizontal sanitary setback of a public well or a
surface water intake point. These policies and procedures shall either
indicate that supplemental treatment as specified in 10.9 and 10.10 of this
policy are required for OWTS that are within a horizontal sanitary setback
of a public well or surface water intake point, or will establish alternate
siting and operational criteria for the proposed OWTS that would similarly
mitigate the potential adverse impact to the public water source.
9.2.13 Any plans for the phase-out or discontinuance of cesspool usage.
9.3 The minimum responsibilities of the local agency for management of the Local
Agency Management Program include:
9.3.1 Maintain records of the number, location, and description of permits
issued for OWTS where a variance is granted.
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9.3.2 Maintain a water quality assessment program to determine the general
operation status of OWTS and to evaluate the impact of OWTS
discharges, and assess the extent to which groundwater and local surface
water quality may be adversely impacted. The focus of the assessment
should be areas with characteristics listed under section 9.1. The
assessment program will include monitoring and analysis of water quality
data, review of complaints, variances, failures, and any information
resulting from inspections. The assessment may use existing water
quality data from other monitoring programs and/or establish the terms,
conditions, and timing for monitoring done by the local agency. At a
minimum this assessment will include monitoring data for nitrates and
pathogens, and may include data for other constituents which are needed
to adequately characterize the impacts of OWTS on water quality. Other
monitoring programs for which data may be used include but are not
limited to any of the following:
9.3.2.1. Random well samples from a domestic well sampling program.
9.3.2.2. Routine real estate transfer samples if those are performed and
reported.
9.3.2.3. Review of public system sampling reports done by the local agency
or another municipality responsible for the public system.
9.3.2.4. Water quality testing reports done at the time of new well
development if those are reported.
9.3.2.5. Beach water quality testing data performed as part of Health and
Safety Code Section 115885.
9.3.2.6. Receiving water sampling performed as a part of a NPDES permit.
9.3.2.7. Data contained in the California Water Quality Assessment
Database.
9.3.2.8. Groundwater sampling performed as part of Waste Discharge
Requirements.
9.3.2.9. Groundwater data collected as part of the Groundwater Ambient
Monitoring and Assessment Program and available in the
Geotracker Database.
9.3.3 Submit an annual report by February 1 to the applicable Regional Water
Board summarizing the status of items 9.3.1 through 9.3.2 above. Every
fifth year, submit an evaluation of the monitoring program and an
assessment of whether water quality is being impacted by OWTS,
identifying any changes in the Local Agency Management Program that
will be undertaken to address impacts from OWTS. The first report will
commence one year after approval of the local agency’s Local Agency
Management Program. In addition to summarizing monitoring data
collected per 9.3.2 above, all groundwater monitoring data generated by
the local agency shall be submitted in EDF format for inclusion into
ITEM NUMBER: C-1
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Geotracker, and surface water monitoring shall be submitted to CEDEN in
a SWAMP comparable format.
9.4 The following are not allowed to be authorized in a Local Agency Management
Program:
9.4.1 Cesspools of any kind or size.
9.4.2 OWTS receiving a projected flow over 10,000 gallons per day.
9.4.3 OWTS that utilize any form of effluent disposal that discharges on or
above the post installation ground surface such as sprinklers, exposed
drip lines, free-surface wetlands, or a pond.
9.4.4 Slopes greater than 30 percent without a slope stability report approved by
a registered professional.
9.4.5 Decreased leaching area for IAPMO certified dispersal systems using a
multiplier less than 0.70.
9.4.6 OWTS utilizing supplemental treatment without requirements for periodic
monitoring or inspections.
9.4.7 OWTS dedicated to receiving significant amounts of wastes dumped from
RV holding tanks.
9.4.8 Separation of the bottom of dispersal system to groundwater less than two
(2) feet, except for seepage pits, which shall not be less than 10 feet.
9.4.9 Installation of new or replacement OWTS where public sewer is available.
The public sewer may be considered as not available when such public
sewer or any building or exterior drainage facility connected thereto is
located more than 200 feet from any proposed building or exterior
drainage facility on any lot or premises that abuts and is served by such
public sewer. This provision does not apply to replacement OWTS where
the connection fees and construction cost are greater than twice the total
cost of the replacement OWTS and the local agency determines that the
discharge from the OWTS will not affect groundwater or surface water to a
degree that makes it unfit for drinking or other uses.
9.4.10 Except as provided for in sections 9.4.11 and 9.4.12, n ew or replacement
OWTS with minimum horizontal setbacks less than any of the following:
9.4.10.1 150 feet from a public water well where the depth of the effluent
dispersal system does not exceed 10 feet in depth.
9.4.10.2 200 feet from a public water well where the depth of the effluent
dispersal system exceeds 10 feet in depth.
9.4.10.3 Where the effluent dispersal system is within 600 feet of a public
water well and exceeds 20 feet in depth the horizontal setback
required to achieve a two-year travel time for microbiological
contaminants shall be evaluated. A qualified professional shall
conduct this evaluation. However in no case shall the setback be
less than 200 feet.
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
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9.4.10.4 Where the effluent dispersal system is within 1,200 feet from a
public water systems’ surface water intake point, within the
catchment of the drainage, and located such that it may impact
water quality at the intake point such as upstream of the intake
point for flowing water bodies, the dispersal system shall be no less
than 400 feet from the high water mark of the reservoir, lake or
flowing water body.
9.4.10.5 Where the effluent dispersal system is located more than 1,200 feet
but less than 2,500 feet from a public water systems’ surface water
intake point, within the catchment area of the drainage, and located
such that it may impact water quality at the intake point such as
upstream of the intake point for flowing water bodies, the dispersal
system shall be no less than 200 feet from the high water mark of
the reservoir, lake or flowing water body.
9.4.11 For replacement OWTS that do not meet the above horizontal separation
requirements, the replacement OWTS shall meet the horizontal separation
to the greatest extent practicable. In such case, the replacement OWTS
shall utilize supplemental treatment and other mitigation measures, unless
the permitting authority finds that there is no indication that the previous
system is adversely affecting the public water source, and there is limited
potential that the replacement system could impact the water source
based on topography, soil depth, soil texture, and groundwater separation.
9.4.12 For new OWTS, installed on parcels of record existing at the time of the
effective date of this Policy, that cannot meet the above horizontal
separation requirements, the OWTS shall meet the horizontal separation
to the greatest extent practicable and shall utilize supplemental treatment
for pathogens as specified in section 10.8 and any other mitigation
measures prescribed by the permitting authority.
9.5 A Local Agency Management Program for OWTS must include adequate detail,
including technical information to support how all the criteria in their program
work together to protect water quality and public health.
9.6 A Regional Water Board reviewing a Local Agency Management Program shall
consider, among other things, the past performance of the local program to
adequately protect water quality, and where this has been achieved with criteria
differing from Tier 1, shall not unnecessarily require modifications to the
program for purposes of uniformity, as long as the Local Agency Management
Program meets the requirements of Tier 2.
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
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Tier 3 – Impaired Areas
34
Tier 3 – Advanced Protection Management Programs for Impaired
Areas
Existing, new, and replacement OWTS that are near impaired water bodies may be
addressed by a TMDL and its implementation program, or special provisions contained
in a Local Agency Management Program. If there is no TMDL or special provisions,
new or replacement OWTS within 600 feet of impaired water bodies listed in Attachment
2 must meet the applicable specific requirements of Tier 3.
10.0 Advanced Protection Management Program
An Advanced Protection Management Program is the minimum required
management program for all OWTS located near a water body that has been listed
as impaired due to nitrogen or pathogen indicators pursuant to Section 303(d) of the
Clean Water Act. Local agencies are authorized to implement Advanced Protection
Management Programs in conjunction with an approved Local Agency Management
Program or, if there is no approved Local Agency Management Program, Tier 1.
Local agencies are encouraged to collaborate with the Regional Water Boards by
sharing any information pertaining to the impairment, provide advice on potential
remedies, and regulate OWTS to the extent that their authority allows for the
improvement of the impairment.
10.1 The geographic area for each water body’s Advanced Protection Management
Program is defined by the applicable TMDL, if one has been approved. If there
is not an approved TMDL, it is defined by an approved Local Agency
Management Program, if it contains special provisions for that water body. If it
is not defined in an approved TMDL or Local Agency Management Program, it
shall be 600 linear feet [in the horizontal (map) direction] of a water body listed
in Attachment 2 where the edge of that water body is the natural or levied bank
for creeks and rivers, the high water mark for lakes and reservoirs, and the
mean high tide line for tidally influenced water bodies, as appropriate. OWTS
near impaired water bodies that are not listed on Attachment 2, and do not
have a TMDL and are not covered by a Local Agency Management Program
with special provisions, are not addressed by Tier 3.
10.2 The requirements of an Advanced Protection Management Program will be in
accordance with a TMDL implementation plan, if one has been adopted to
address the impairment. An adopted TMDL implementation plan supersedes
all other requirements in Tier 3. All TMDL implementation plans adopted after
the effective date of this Policy that contain load allocations for OWTS shall
include a schedule that requires compliance with the load allocations as soon
as practicable, given the watershed-specific circumstances. The schedule shall
require that OWTS implementation actions for OWTS installed prior to the
TMDL implementation plan’s effective date shall commence within 3 years after
the TMDL implementation plan’s effective date, and that OWTS implementation
actions for OWTS installed after the TMDL implementation plan’s effective date
shall commence immediately. The TMDL implementation plan may use some
or all of the Tier 3 requirements and shall establish the applicable area of
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
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Tier 3 – Impaired Areas
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implementation for OWTS requirements within the watershed. For those
impaired water bodies that do have a n adopted TMDL addressing the
impairment, but the TMDL does not assign a load allocation to OWTS , no
further action is required unless the TMDL is modified at some point in the
future to include actions for OWTS. Existing, new, and replacement OWTS that
are near impaired water bodies and are covered by a Basin Plan prohibition
must also comply with the terms of the prohibition, as provided in Section 2.1.
10.3 In the absence of an adopted TMDL implementation plan, the requirements of
an Advanced Protection Management Program will consist of any special
provisions for the water body if any such provisions have been approved as
part of a Local Agency Management Program .
10.4 The Regional Water Boards shall adopt TMDLs for impaired water bodies
identified in Attachment 2, in accordance with the specified dates.
10.4.1 If a Regional Water Board does not complete a TMDL within two years of
the time period specified in Attachment 2, coverage under this Policy’s
waiver of waste discharge requirements shall expire for any OWTS that
has any part of its dispersal system discharging within the geographic
area of an Advanced Protection Management Program . The Regional
Water Board shall issue waste discharge requirements, general waste
discharge requirements, waivers of waste discharge requirements, or
require corrective action for such OWTS. The Regional Water Board will
consider the following when establishing the waste discharge
requirements, general waste discharge requirements, waivers of waste
discharge requirements, or requirement for corrective action:
10.4.1.1 Whether supplemental treatment should be required.
10.4.1.2 Whether routine inspection of the OWTS should be required.
10.4.1.3 Whether monitoring of surface and groundwater should be
performed.
10.4.1.4 The collection of a fee for those OWTS covered by the order.
10.4.1.5 Whether owners of previously-constructed OWTS should file a
report by a qualified professional in accordance with section 10.5.
10.4.1.6 Whether owners of new or replacement OWTS should file a report
of waste discharge with additional supporting technical information
as required by the Regional Water Board.
10.5 If the Regional Water Board requires owners of OWTS to submit a qualified
professional’s report pursuant to Section 10.4.1.5, the report shall include a
determination of whether the OWTS is functioning properly and as designed or
requires corrective actions per Tier 4, and regardless of its state of function ,
whether it is contributing to impairment of the water body.
10.5.1 The qualified professional’s report may also include, but is not limited to:
ITEM NUMBER: C-1
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ATTACHMENT: 2
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10.5.1.1 A general description of system components, their physical layout,
and horizontal setback distances from property lines, buildings, wells,
and surface waters.
10.5.1.2 A description of the type of wastewater discharged to the OWTS
such as domestic, commercial, or industrial and classification of it as
domestic wastewater or high-strength waste.
10.5.1.3 A determination of the systems design flow and the volume of
wastewater discharged daily derived from water use, either estimated
or actual if metered.
10.5.1.4 A description of the septic tank, including age, size, material of
construction, internal and external condition, water level, scum layer
thickness, depth of solids, and the results of a one-hour hydrostatic
test.
10.5.1.5 A description of the distribution box, dosing siphon, or distribution
pump, and if flow is being equally distributed throughout the dispersal
system, as well as any evidence of solids carryover, clear water
infiltration, or evidence of system backup.
10.5.1.6 A description of the dispersal system including signs of hydraulic
failure, condition of surface vegetation over the dispersal system,
level of ponding above the infiltrative surface within the dispersal
system, other possible sources of hydraulic loading to the dispersal
area, and depth of the seasonally high groundwater level.
10.5.1.7 A determination of whether the OWTS is discharging to the ground’s
surface.
10.5.1.8 For a water body listed as an impaired water body for pathogens, a
determination of the OWTS dispersal system’s separation from its
deepest most infiltrative surface to the highest seasonal groundwater
level or fractured bedrock.
10.5.1.9 For a water body listed as an impaired water body for nitrogen, a
determination of whether the groundwater under the dispersal field is
reaching the water body, and a description of the method used to
make the determination.
10.6 For new, replacement, and existing OWTS in an Advanced Protection
Management Program, the following are not covered by this Policy’s waiver but
may be authorized by a separate Regional Water Board order:
10.6.1 Cesspools of any kind or size.
10.6.2 OWTS receiving a projected flow over 10,000 gallons per day.
10.6.3 OWTS that utilize any form of effluent disposal on or above the ground
surface.
10.6.4 Slopes greater than 30 percent without a slope stability report approved by
a registered professional.
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
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10.6.5 Decreased leaching area for IAPMO certified dispersal systems using a
multiplier less than 0.70.
10.6.6 OWTS utilizing supplemental treatment without requirements for periodic
monitoring or inspections.
10.6.7 OWTS dedicated to receiving significant amounts of wastes dumped from
RV holding tanks.
10.6.8 Separation of the bottom of dispersal system to groundwater less than two
(2) feet, except for seepage pits, which shall not be less than 10 feet.
10.6.9 Minimum horizontal setbacks less than any of the following:
10.6.9.1 150 feet from a public water well where the depth of the effluent
dispersal system does not exceed 10 feet in depth;
10.6.9.2 200 feet from a public water well where the depth of the effluent
dispersal system exceeds 10 feet in depth:
10.6.9.3 Where the effluent dispersal system is within 600 feet of a public
water well and exceeds 20 feet in depth the horizontal setback
required to achieve a two-year travel time for microbiological
contaminants shall be evaluated. A qualified professional shall
conduct this evaluation. However in no case shall the setback be
less than 200 feet.
10.6.9.4 Where the effluent dispersal system is within 1,200 feet from a
public water systems’ surface water intake point, within the
catchment of the drainage, and located such that it may impact
water quality at the intake point such as upstream of the intake
point for flowing water bodies, the dispersal system shall be no less
than 400 feet from the high water mark of the reservoir, lake or
flowing water body.
10.6.9.5 Where the effluent dispersal system is located more than 1,200 feet
but less than 2,500 feet from a public water systems’ surface water
intake point, within the catchment of the drainage, and located such
that it may impact water quality at the intake point such as
upstream of the intake point for flowing water bodies, the dispersal
system shall be no less than 200 feet from the high water mark of
the reservoir, lake or flowing water body.
10.6.9.6 For replacement OWTS that do not meet the above horizontal
separation requirements, the replacement OWTS shall meet the
horizontal separation to the greatest extent practicable. In such
case, the replacement OWTS shall utilize supplemental treatment
and other mitigation measures.
10.6.9.7 For new OWTS, installed on parcels of record existing at the time of
the effective date of this Policy, that cannot meet the above
horizontal separation requirements, the OWTS shall meet the
horizontal separation to the greatest extent practicable and shall
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
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utilize supplemental treatment for pathogens as specified in section
10.10 and any other mitigation measures as prescribed by the
permitting authority.
10.7 The requirements contained in Section 10 shall not apply to owners of OWTS
that are constructed and operating, or permitted, on or prior to the date that the
nearby water body is added to Attachment 2 who commit by way of a legally
binding document to connect to a centralized wastewater collection and
treatment system regulated through WDRs as specified within the following
timeframes:
10.7.1 The owner must sign the document within forty-eight months of the date
that the nearby water body is initially listed on Attachment 2.
10.7.2 The specified date for the connection to the centralized community
wastewater collection and treatment system shall not extend beyond nine
years following the date that the nearby water body is added to
Attachment 2.
10.8 In the absence of an adopted TMDL implementation plan or Local Agency
Management Program containing special provisions for the water body, all new
or replacement OWTS permitted after the date that the water body is initially
listed in Attachment 2 that have any discharge within the geographic area of an
Advanced Protection Management Program shall meet the following
requirements:
10.8.1 Utilize supplemental treatment and meet performance requirements in
10.9 if impaired for nitrogen and 10.10 if impaired for pathogens,
10.8.2 Comply with the setback requirements of Section 7.5.1 to 7.5.5, and
10.8.3 Comply with any applicable Local Agency Management Program
requirements.
10.9 Supplemental treatment requirements for nitrogen
10.9.1 Effluent from the supplemental treatment components designed to
reduce nitrogen shall be certified by NSF, or other approved third party
tester, to meet a 50 percent reduction in total nitrogen when comparing
the 30-day average influent to the 30-day average effluent.
10.9.2 Where a drip-line dispersal system is used to enhance vegetative
nitrogen uptake, the dispersal system shall have at least six (6) inches
of soil cover.
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
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10.10 Supplemental treatment requirements for pathogens
10.10.1 Supplemental treatment components designed to perform
disinfection shall provide sufficient pretreatment of the wastewater so that
effluent from the supplemental treatment components does not exceed a
30-day average TSS of 30 mg/L and shall further achieve an effluent
fecal coliform bacteria concentration less than or equal to 200 Most
Probable Number (MPN) per 100 milliliters.
10.10.2 The minimum soil depth and the minimum depth to the anticipated
highest level of groundwater below the bottom of the dispersal system
shall not be less than three (3) feet. All dispersal systems shall have at
least twelve (12) inches of soil cover.
10.11 OWTS in an Advanced Protection Management Program with supplemental
treatment shall be designed to meet the applicable performance requirements
above and shall be stamped or approved by a Qualified Professional.
10.12 Prior to the installation of any proprietary treatment OWTS in an Advanced
Protection Management Program, all such treatment components shall be
tested by an independent third party testing laboratory.
10.13 The ongoing monitoring of OWTS in an Advanced Protection Management
Program with supplemental treatment components designed to meet the
performance requirements in Sections 10.9 and 10.10 shall be monitored in
accordance with the operation and maintenance manual for the OWTS or
more frequently as required by the local agency or Regional Water Board.
10.14 OWTS in an Advanced Protection Management Program with supplemental
treatment components shall be equipped with a visual or audible alarm as
well as a telemetric alarm that alerts the owner and service provider in the
event of system malfunction. Where telemetry is not possible, the owner or
owner’s agent shall inspect the system at least monthly while the system is in
use as directed and instructed by a service provider and notify the service
provider not less than quarterly of the observed operating parameters of the
OWTS.
10.15 OWTS in an Advanced Protection Management Program designed to meet
the disinfection requirements in Section 10.10 shall be inspected for proper
operation quarterly while the system is in use by a service provider unless a
telemetric monitoring system is capable of continuously assessing the
operation of the disinfection system. Testing of the wastewater flowing from
supplemental treatment components that perform disinfection shall be
sampled at a point in the system after the treatment components and prior to
the dispersal system and shall be conducted quarterly based on analysis of
total coliform with a minimum detection limit of 2.2 MPN. All effluent samples
must include the geographic coordinates of the sample’s location. Effluent
samples shall be taken by a service provider and analyzed by a California
Department of Public Health certified laboratory.
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
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10.16 The minimum responsibilities of a local agency administering an Advanced
Protection Management Program include those prescribed for the Local
Agency Management Programs in Section 9.3 of this policy, as well as
monitoring owner compliance with Sections 10.13, 10.14,and 10.15.
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
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Tier 4 – OWTS Requiring Corrective Action
41
Tier 4 – OWTS Requiring Corrective Action
OWTS that require corrective action or are either presently failing or fail at any time
while this Policy is in effect are automatically included in Tier 4 and must follow the
requirements as specified. OWTS included in Tier 4 must continue to meet applicable
requirements of Tier 0, 1, 2 or 3 pending completion of corrective action.
11.0 Corrective Action for OWTS
11.1 Any OWTS that has pooling effluent, discharges wastewater to the surface, or
has wastewater backed up into plumbing fixtures, because its dispersal
system is no longer adequately percolating the wastewater is deemed to be
failing, no longer meeting its primary purpose to protect public health, and
requires major repair, and as such the dispersal system must be replaced,
repaired, or modified so as to return to proper function and comply with Tier 1,
2, or 3 as appropriate.
11.2 Any OWTS septic tank failure, such as a baffle failure or tank structural
integrity failure such that either wastewater is exfiltrating or groundwater is
infiltrating is deemed to be failing, no longer meeting its primary purpose to
protect public health, and requires major repair, and as such shall require the
septic tank to be brought into compliance with the requirements of Section 8
in Tier 1 or a Local Agency Management Program per Tier 2.
11.3 Any OWTS that has a failure of one of its components other than those
covered by 11.1 and 11.2 above, such as a distribution box or broken piping
connection, shall have that component repaired so as to return the OWTS to
a proper functioning condition and return to Tier 0, 1, 2, or 3.
11.4 Any OWTS that has affected, or will affect, groundwater or surface water to a
degree that makes it unfit for drinking or other uses, or is causing a human
health or other public nuisance condition shall be modified or upgraded so as
to abate its impact.
11.5 If the owner of the OWTS is not able to comply with corrective action
requirements of this section, the Regional Water Board may authorize repairs
that are in substantial conformance, to the greatest extent practicable, with
Tiers 1 or 3, or may require the owner of the OWTS to submit a report of
waste discharge for evaluation on a case-by-case basis. Regional Water
Board response to such reports of waste discharge may include, but is not
limited to, enrollment in general waste discharge requirements, issuance of
individual waste discharge requirements, or issuance of waiver of waste
discharge requirements. A local agency may authorize repairs that are in
substantial conformance, to the greatest extent practicable, with Tier 2 in
accordance with section 9.2.3 if there is an approved Local Agency
Management Program, or with an existing program if a Local Agency
Management Program has not been approved and it is less than 5 years from
the effective date of the Policy.
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
Page 185 of 252
Tier 4 – OWTS Requiring Corrective Action
42
11.6 Owners of OWTS will address any corrective action requirement of Tier 4 as
soon as is reasonably possible, and must comply with the time schedule of
any corrective action notice received from a local agency or Regional Water
Board, to retain coverage under this Policy.
11.7 Failure to meet the requirements of Tier 4 constitute a failure to meet the
conditions of the waiver of waste discharge requirements contain ed in this
Policy, and is subject to further enforcement action.
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
Page 186 of 252
Waiver – Effective Date – Financial Assistance
43
Conditional Waiver of Waste Discharge Requirements
12.0 In accordance with Water Code section 13269, the State Water Board hereby
waives the requirements to submit a report of waste discharge, obtain waste
discharge requirements, and pay fees for discharges from OWTS covered by this
Policy. Owners of OWTS covered by this Policy shall comply with the following
conditions:
12.0.1 The OWTS shall function as designed with no surfacing effluent.
12.0.2 The OWTS shall not utilize a dispersal system that is in soil saturated with
groundwater.
12.0.3 The OWTS shall not be operated while inundated by a storm or flood
event.
12.0.4 The OWTS shall not cause or contribute to a condition of nuisance or
pollution.
12.0.5 The OWTS shall comply with all applicable local agency codes,
ordinances, and requirements.
12.0.6 The OWTS shall comply with and meet any applicable TMDL
implementation requirements, special provisions for impaired water
bodies, or supplemental treatment requirements imposed by Tier 3.
12.0.7 The OWTS shall comply with any corrective action requirements of Tier 4.
12.1 This waiver may be revoked by the State Water Board or the applicable Regional
Water Board for any discharge from an OWTS, or from a category of OWTS.
Effective Date
13.0 This Policy becomes effective six months after its approval by the Office of
Administrative Law, and all deadlines and compliance dates stated herein start at
such time.
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
Page 187 of 252
Waiver – Effective Date – Financial Assistance
44
Financial Assistance
14.0 Local Agencies may apply to the State Water Board for funds from the Clean
Water State Revolving Fund for use in mini-loan programs that provide low
interest loan assistance to private property owners with costs associated with
complying with this Policy.
14.1 Loan interest rates for loans to local agencies will be set by the State
Water Board using its policies, procedures, and strategies for
implementing the Clean Water State Revolving Fund program, but will
typically be one-half of the States most recent General Obligation bond
sale. Historically interest rates have ranged between 2.0 and 3.0 percent.
14.2 Local agencies may add additional interest points to their loans made to
private entities to cover their costs of administering the mini-loan program.
14.3 Local agencies may submit their suggested loan eligibility criteria for the
min-loan program they wish to establish to the State Water Board for
approval, but should consider the legislative intent stated in Water Code
Section 13291.5 is that assistance is encouraged for private property
owners whose cost of complying with the requirements of this policy
exceeds one-half of one percent of the current assessed value of the
property on which the OWTS is located.
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
Page 188 of 252
Attachment 1
45
Initial Waiver 2nd Waiver 3rd Waiver
2 yrs 1 yr 1 yr
Local Authorities Develop and submit ProgramRB review and approvalSB Dispute ResolutionPolicy and Waiver Adopted1 yr
Local Authority adjustment periodLocal Agency Annual ReportsOWTS Policy Time Lines
V7 6/4/2012
First report starts on 4th yearYear 5 Year 10 Year 15Effective DateRBs align Basin PlansWith Policy1 yr6
mth
Assessment report of OWTS impacts every fifth yearAssessment reportSB renews WaiverSB renews WaiverSB renews WaiverSB – State Water Board
RB – Regional Water Board End of initial period for OWTS owners to complete sewer connection (10.7)End of initial period for
OWTS owners to sign sewer
connection agreement (10.7)
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
Page 189 of 252
Attachment 2
46
The tables below specifically identify those impaired water bodies where: (1) it is likely that operating OWTS will subsequently be
determined to be a contributing source of pathogens or nitrogen and therefore it is anticipated that OWTS would receive a loading
reduction, and (2) it is likely that new OWTS installations discharging within 600 feet of the water body would contribute to the
impairment. Per this Policy (Tier 3, Section 10) the Regional Water Boards must adopt a TMDL by the date specified in the table. The
State Water Board, at the time of approving future 303 (d) Lists, will specifically identify those impaired water bodies that are to be
added or removed from the tables below.
Table 5. Water Bodies impaired for pathogens that are subject to Tier 3 as of 2012. REGION NO. REGION NAME WATERBODY NAME COUNTIES
TMDL
Completion
Date
1 North Coast Clam Beach Humboldt 2020
1 North Coast Luffenholtz Beach Humboldt 2020
1 North Coast Moonstone County Park Humboldt 2020
1 North Coast Russian River HU, Lower Russian River HA, Guerneville HSA,
mainstem Russian River from Fife Creek to Dutch Bill Creek
Sonoma 2016
1 North Coast Russian River HU, Lower Russian River HA, Guerneville HSA,
Green Valley Creek watershed
Sonoma 2016
1 North Coast Russian River HU, Middle Russian River HA, Geyserville HSA,
mainstem Russian River at Healdsburg Memorial Beach and
unnamed tributary at Fitch Mountain
Sonoma 2016
1 North Coast Russian River HU, Middle Russian River HA, mainstem
Laguna de Santa Rosa
Sonoma 2016
1 North Coast Russian River HU, Middle Russian River HA, mainstem Santa
Rosa Creek
Sonoma 2016
1 North Coast Trinidad State Beach Humboldt 2020
2 San Francisco
Bay
China Camp Beach Marin
2014
2 San Francisco
Bay
Lawsons Landing Marin
2015
2
San Francisco
Bay Pacific Ocean at Bolinas Beach Marin 2014
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
Page 190 of 252
Attachment 2
47
REGION NO. REGION NAME WATERBODY NAME COUNTIES
TMDL
Completion
Date
2 San Francisco
Bay
Pacific Ocean at Fitzgerald Marine Reserve San Mateo
2016
2 San Francisco
Bay
Pacific Ocean at Muir Beach Marin
2015
2 San Francisco
Bay
Pacific Ocean at Pillar Point Beach San Mateo
2016
2 San Francisco
Bay
Petaluma River Marin, Sonoma
2017
2 San Francisco
Bay
Petaluma River (tidal portion) Marin, Sonoma
2017
2 San Francisco
Bay
San Gregorio Creek San Mateo
2019
3 Central Coast Pacific Ocean at Point Rincon (mouth of Rincon Cr, Santa
Barbara County)
Santa Barbara
2015
3 Central Coast Rincon Creek Santa Barbara,
Ventura 2015
4 Los Angeles Canada Larga (Ventura River Watershed) Ventura 2017
4 Los Angeles Coyote Creek Los Angeles, Orange 2015
4 Los Angeles Rincon Beach Ventura 2017
4 Los Angeles San Antonio Creek (Tributary to Ventura River Reach 4) Ventura 2017
4 Los Angeles San Gabriel River Reach 1 (Estuary to Firestone) Los Angeles 2015
4 Los Angeles San Gabriel River Reach 2 (Firestone to Whittier Narrows
Dam
Los Angeles
2015
4 Los Angeles San Gabriel River Reach 3 (Whittier Narrows to Ramona) Los Angeles 2015
4 Los Angeles San Jose Creek Reach 1 (SG Confluence to Temple St.) Los Angeles 2015
4 Los Angeles San Jose Creek Reach 2 (Temple to I-10 at White Ave.) Los Angeles 2015
4 Los Angeles Sawpit Creek Los Angeles 2015
4 Los Angeles Ventura River Reach 3 (Weldon Canyon to Confl. w/ Coyote
Cr)
Ventura
2017
4 Los Angeles Walnut Creek Wash (Drains from Puddingstone Res) Los Angeles 2015
5 Central Valley Wolf Creek (Nevada County) Nevada, Placer 2020
5 Central Valley Woods Creek (Tuolumne County) Tuolumne 2020
7 Colorado River Alamo River Imperial 2017
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
Page 191 of 252
Attachment 2
48
REGION NO. REGION NAME WATERBODY NAME COUNTIES
TMDL
Completion
Date
7 Colorado River Palo Verde Outfall Drain and Lagoon Imperial, Riverside 2017
8 Santa Ana Canyon Lake (Railroad Canyon Reservoir) Riverside 2019
8 Santa Ana Fulmor, Lake Riverside 2019
8 Santa Ana Goldenstar Creek Riverside 2019
8 Santa Ana Los Trancos Creek (Crystal Cove Creek) Orange 2017
8 Santa Ana Lytle Creek San Bernardino 2019
8 Santa Ana Mill Creek Reach 1 San Bernardino 2015
8 Santa Ana Mill Creek Reach 2 San Bernardino 2015
8 Santa Ana Morning Canyon Creek Orange 2017
8 Santa Ana Mountain Home Creek San Bernardino 2019
8 Santa Ana Mountain Home Creek, East Fork San Bernardino 2019
8 Santa Ana Silverado Creek Orange 2017
8 Santa Ana Peters Canyon Channel Orange 2017
8 Santa Ana Santa Ana River, Reach 2 Orange, Riverside 2019
8 Santa Ana
Temescal Creek, Reach 6 (Elsinore Groundwater sub basin
boundary to Lake Elsinore Outlet) Riverside 2019
8 Santa Ana Seal Beach Orange 2017
8 Santa Ana Serrano Creek Orange 2017
8 Santa Ana Huntington Harbour Orange 2017
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
Page 192 of 252
Attachment 2
49
Table 6. Water Bodies impaired for nitrogen that are subject to Tier 3. REGION NO. REGION NAME WATERBODY NAME COUNTIES
TMDL
Completion
Date
1 North Coast
Russian River HU, Middle Russian River HA, mainstem
Laguna de Santa Rosa Sonoma 2015
2
San Francisco
Bay Lagunitas Creek Marin 2016
2
San Francisco
Bay Napa River Napa, Solano 2014
2
San Francisco
Bay Petaluma River Marin, Sonoma 2017
2
San Francisco
Bay Petaluma River (tidal portion) Marin, Sonoma 2017
2
San Francisco
Bay Sonoma Creek Sonoma 2014
2
San Francisco
Bay Tomales Bay Marin 2019
2
San Francisco
Bay Walker Creek Marin 2016
4 Los Angeles Malibu Creek Los Angeles 2016
4 Los Angeles San Antonio Creek (Tributary to Ventura River Reach 4) Ventura 2013
8 Santa Ana East Garden Grove Wintersburg Channel Orange 2017
8 Santa Ana Grout Creek San Bernardino 2015
8 Santa Ana Rathbone (Rathbun) Creek San Bernardino 2015
8 Santa Ana Summit Creek San Bernardino 2015
8 Santa Ana Serrano Creek Orange 2017
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
Page 193 of 252
Attachment 3
50
Regional Water Boards, upon mutual agreement, may designate one Regional Water
Board to regulate a person or entity that is under the jurisdiction of both (Water Code
Section 13228). The following table identifies the designated Regional Water Board for
all counties within the State for purposes of reviewing and, if appropriate, approving new
Local Agency Management Plans.
Table 7. Regional Water Board designations by County.
County
Regions with
Jurisdiction
Designated
Region
Alameda 2,5 2
Alpine 5,6 6
Amador 5 5
Butte 5 5
Calaveras 5 5
Colusa 5 5
Contra
Costa 2,5 2
Del Norte 1 1
El Dorado 5,6 5
Fresno 5 5
Glenn 5,1 5
Humboldt 1 1
Imperial 7 7
Inyo 6 6
Kern 3,4,5,6 5
Kings 5 5
Lake 5,1 5
Lassen 5,6 6
Los Angeles 4,6 4
Madera 5 5
Marin 2,1 2
Mariposa 5 5
Mendocino 1 1
Merced 5 5
Modoc 1,5,6 5
Mono 6 6
Monterey 3 3
Napa 2,5 2
Nevada 5,6 5
Orange 8,9 8
County
Regions with
Jurisdiction
Designated
Region
Placer 5,6 5
Plumas 5 5
Riverside 7,8,9 7
Sacramento 5 5
San Benito 3,5 3
San
Bernardino 6,7,8 6
San Diego 9,7 9
San
Francisco 2 2
San Joaquin 5 5
San Luis
Obispo 3,5 3
San Mateo 2,3 2
Santa
Barbara 3 3
Santa Clara 2,3 2
Santa Cruz 3 3
Shasta 5 5
Sierra 5,6 5
Siskiyou 1,5 1
Solano 2,5 5
Sonoma 1,2 1
Stanislaus 5 5
Sutter 5 5
Tehama 5 5
Trinity 1 1
Tulare 5 5
Tuolumne 5 5
Ventura 4,3 4
Yolo 5 5
Yuba 5 5
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
Page 194 of 252
APPENDIX B
CENTRAL COAST RWQCB
ONSITE WASTEWATER MANAGEMENT
PLAN GUIDANCE
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
Page 195 of 252
~ GUIDANCE ~
CENTRAL COAST WATER BOARD
CHECKLIST FOR DEVELOPING & REVIEWING
ONSITE WASTEWATER MANAGEMENT PLANS
GOAL: Implementation of onsite management plan will protect and enhance ground
and surface water. Each local agency is likely to have unique site limitations and
potential water quality issues associated with onsite systems, and management
measures to address those issues. Accordingly, the onsite management plan should be
flexible and agency-specific. The plan must address each component required in the
Basin Plan, however the means and degree to which each component is addressed is
flexible. Following is based upon the order in which requirements appear in the Basin
Plan, minus duplicative requirements (Chapter 4, Section VIII.D.)
Note: Many components of an effective onsite wastewater management plan may
already be implemented by the local permitting jurisdiction or other resource agencies.
To prevent duplicative efforts and maximize efficiency, such existing practices should be
utilized to the maximum extent practical and summarized in the plan. For example,
water quality monitoring data may be available from local health departments, water
purveyors, Central Coast Water Board programs, etc. Such data can be used to support
management plan activities providing the data is technically sound and adequately
summarized in the plan. Adequate documentation should also be included to address
any components omitted from a plan, such as those actions performed by other
agencies or not applicable due to specified local conditions. The following guidance is
based upon requirements adopted by the Central Coast Water Board on May 9, 2008,
and not yet approved by the State Water Board.
1. Survey and evaluation of existing onsite systems.
a. Identify areas served by existing onsite systems throughout jurisdiction. (Section
should establish a baseline, include maps or GIS layers, identify areas suitable
for conventional systems, summarize basis for suitability, etc.)
b. Identify problematic areas (site limitations, failure rates, water quality impacts).
c. Management measures 2, 3, 7 & 8 are implemented in problematic areas.
2. Water quality (ground and surface water) monitoring program.
a. Ground and/or surface water monitoring in areas likely to detect and prevent
degradation. (Include existing data sources and observations where available,
document data sources, and document the basis for determining areas likely to
be degraded.)
b. Monitoring locations/depth are representative and can characterize early effects.
c. Monitoring results support implementation measures and protection of water
quality and beneficial uses.
3. Projections of onsite disposal system demand and determination of methods to best
meet demand.
a. Documentation/details that demand will be met without degrading water quality.
(Section will reflect each agency’s existing and planned policies, include
feedback loops to ensure policies are working, and periodic reevaluation.)
APPENDIX B ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
Page 196 of 252
Onsite Wastewater Management Plan Guidance 2
b. If sewering is proposed, a realistic schedule is provided. (Include legal authority
to prohibit onsite systems within specified proximity of sewer or other tools,
summarize measures to prevent water quality impacts until sewer is provided.)
4. Recommendations and requirements for existing onsite wastewater system
inspection, monitoring, maintenance and repairs. (Consider different levels for
conventional vs. alternative systems.)
a. Recommendations & requirements are consistent with Basin Plan.
b. Recommendations & requirements are implemented in an effective manner.
(Include feedback loop to ensure effectiveness of policies described.)
c. Replacements/repairs comply with Basin Plan recommendations, requirements
and prohibitions. (Management proposed if repairs can not meet Basin Plan
standards, deed restrictions, etc.)
d. Method for informing onsite system owners is described and effective.
e. Tracking of system failures, pumping, or other means of identifying problems.
f. Implementation methods are supported by adequate resources. (Identify who
implements or will implement actions.)
5. Recommendations and requirements for new onsite wastewater systems.
a. Recommendations & requirements are consistent with Basin Plan.
b. Recommendations & requirements are implemented in effective manner.
(Include feedback loop to ensure effectiveness of policies described.)
c. Site suitability tests are performed and support design.
d. Permitting process ensures proper siting, design, construction & maintenance.
e. Permitting conditions reflect Basin Plan criteria and protects set-aside areas.
f. Property owners are notified of proper installation, operation & maintenance.
(Describe when and how notification will occur in the local permitting process.)
g. Alternative systems are prohibited unless consistent with specified criteria.
(Includes water quality protection criteria for alternative systems, if allowed.)
h. Alternative system criteria include means of verifying ongoing compliance
(performance monitoring and reporting).
i. Alternative system owners are provided maintenance or replacement document
by the system designer or installer, citing homeowner procedures to ensure
maintenance, repair, or replacement of critical items within 48 hours.
j. Provisions to ensure long-term performance of alternative systems (service
contract, deed restrictions, disclosures, etc.)
g. Implementation methods are supported by adequate resources. (Identify who
implements or will implement actions.)
6. Alternative means of disposing of sewage in the event of disposal system failure
and/or irreversible degradation from onsite disposal. (Define how local agency
characterizes system failure or irreversible degradation and how it will be detected.)
a. List of alternate disposal options. (Availability of capacity at each optional
disposal facility should be documented.)
b. Estimated cost of wastewater disposal alternatives.
7. Education and outreach program.
a. Sample information is fact-based, accurate, user-friendly, and lasting.
b. Provisions for public inquiry and assistance.
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
Page 197 of 252
Onsite Wastewater Management Plan Guidance 3
8. Enforcement options. (Including maintenance of alternative systems and
commitment to follow through).
a. Local ordinance reflects Basin Plan criteria.
b. Local enforcement tools are available and commitment is clearly stated.
(Describe escalation of enforcement and who will implement each action.)
9. Septage management.
a. Septage volume estimated.
b. Long-term disposal capacity (authorization if site not owned by same agency).
c. Septage disposal plans & schedule, if site not currently available.
d. Discussion of private hauling company coordination with local agencies.
10. Program administration, staffing, records keeping, installation and repairs tracking,
and financing (are adequate resources provided to support all activities).
a. Clear delegation of tasks, who does what.
b. Staff/contract inspectors use detailed checklist to verify construction compliance.
c. Periodic summary reports, contents of report, and feedback loop.
d. Local ordinance reflects Basin Plan criteria and supports management plan
implementation.
S:\WQ Control Planning\Onsite\MOUs\mgnt plan guidance.doc
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
Page 198 of 252
APPENDIX C
OWTS DESIGN / CONSTRUCTION
COMPARISON TABLE
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
Page 199 of 252
OWTS Policy Comparisons
RWQCB OWTS
POLICY SECTION Regional Atascadero LAMP
7.1 Qualified Professional Same Same
7.2 Depth of soil Same 3 feet (bottom of dispersal
system)
7.3 Depth to G.W. 10 feet 5ft (shallow dispersal system)
10ft ( bottom of seepage pit)
7.4 Perc Rates Exceed 120 min/in
(Lot must be > 2 acres) 0.83 to 5.12 gal/ft2/day
7.5 Minimum Setbacks Same LAMP or Plumbing Code
7.7 Maximum Slope 30% 30% (slope stability report
needed)
7.8 Allowable Average
Densities 2 acres 2 acres
8.1.1 Design: qualified
Profession Same Same
8.1.3 Maximum Waste Flow Same Same
8.1.4 Soil Cover 12 inches (minimum) 12 to 18 inches
(shall not exceed 24 inches)
8.1.5 Minimum Depth to G.W. Perc rate > 30 MPI = 5ft
5ft (shallow dispersal system)
10ft ( bottom of seepage pit)
8.1.6 Leach Field
Requirements Same Ryon Formula
8.1.7 Dispersal System
Maximum Depth Same Same
8.1.8 Expansion/Replacement
Area Same Same
8.1.9 Impermeable Surface Allowed Allowed
8.1.10 Rock Fragment Content Same Same
8.1.11 Alternative Systems Same Same
8.2 OTWS Construction and
Installation Qualified professionals Qualified professionals
APPENDIX C ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
Page 200 of 252
APPENDIX D
PRELIMINARY COST ESTIMATES
FOR POTENTIAL EXPANSION OF
SANITARY SEWER COLLECTION
SYSTEM
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
Page 201 of 252
ITEM UNIT QUANTITY UNIT PRICE ESTIMATED CONSTRUCTION COST
8" GRAVITY SEWER LF 5931 $200.00 $1,186,200
6" FORCE MAIN LF 1434 $125.00 $179,250
MANHOLE EA 14 $7,500.00 $105,000
LIFT STATION EA 1 $150,000.00 $150,000
SSCO EA 4 $4,500.00 $18,000
AREA TOTAL $1,638,450
52
$31,508.65
ITEM UNIT QUANTITY UNIT PRICE ESTIMATED CONSTRUCTION COST
8" GRAVITY SEWER LF 29335 $200.00 $5,867,000
6" FORCE MAIN LF 1312 $125.00 $164,000
MANHOLE EA 56 $7,500.00 $420,000
LIFT STATION EA 2 $150,000.00 $300,000
SSCO EA 26 $4,500.00 $117,000
AREA TOTAL $6,868,000
398
$17,256.28
ITEM UNIT QUANTITY UNIT PRICE ESTIMATED CONSTRUCTION COST
8" GRAVITY SEWER LF 19561 $200.00 $3,912,200
6" FORCE MAIN LF 131 $125.00 $16,375
MANHOLE EA 39 $7,500.00 $292,500
LIFT STATION EA 4 $150,000.00 $600,000
SSCO EA 23 $4,500.00 $103,500
AREA TOTAL $4,924,575
316
$15,584.10
ITEM UNIT QUANTITY UNIT PRICE ESTIMATED CONSTRUCTION COST
8" GRAVITY SEWER LF 22793 $200.00 $4,558,600
6" FORCE MAIN LF 21 $125.00 $2,625
MANHOLE EA 50 $7,500.00 $375,000
LIFT STATION EA 1 $150,000.00 $150,000
SSCO EA 20 $4,500.00 $90,000
AREA TOTAL $5,176,225
363
$14,259.57
ITEM UNIT QUANTITY UNIT PRICE ESTIMATED CONSTRUCTION COST
8" GRAVITY SEWER LF 40787 $200.00 $8,157,400
6" FORCE MAIN LF 0 $125.00 $0
MANHOLE EA 79 $7,500.00 $592,500
LIFT STATION EA 0 $150,000.00 $0
SSCO EA 39 $4,500.00 $175,500
AREA TOTAL $8,925,400
577
$15,468.63
TOTAL (ALL ZONES)$27,532,650
NUMBER OF PARCELS SERVED
ESTIMATED COST PER PARCEL SERVED
NUMBER OF PARCELS SERVED
ESTIMATED COST PER PARCEL SERVED
SANITARY SEWER EXPANSION AREA 5
Estimated Sewer Expansion Costs
SANITARY SEWER EXPANSION AREA 1
SANITARY SEWER EXPANSION AREA 2
SANITARY SEWER EXPANSION AREA 3
SANITARY SEWER EXPANSION AREA 4
NUMBER OF PARCELS SERVED
ESTIMATED COST PER PARCEL SERVED
NUMBER OF PARCELS SERVED
ESTIMATED COST PER PARCEL SERVED
NUMBER OF PARCELS SERVED
ESTIMATED COST PER PARCEL SERVED
APPENDIX D ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
Page 202 of 252
APPENDIX E
OWTS EASEMENT REQUIREMENTS
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
Page 203 of 252
APPENDIX E
Requirements for Easements
•The installation of septic systems in public road easements requires written authorization from
the Building Division.
•No part of a septic system shall be installed in an ingress/egress easement on a private road
intended to provide access to more than one property without a variance from the City and
written authorization from the Fire Department. When determined by the City that
through adequate tests conducted by QP throughout the property that no favorable area for
installation of an OWTS is available on the property, the City may authorize the installation of
OWTS or part thereof in the easement.
•The City will accept an easement that is completely dedicated for the purpose of installing
OWTS when it has been recorded through Assessor’s Office reflecting such use. An OWTS or
any part of the system may be installed within a utility easement, once it’s
demonstrated to the Department that there is no other area on the property that may be
feasible for the installation of the OWTS. However, there shall not be any overhead
obstructions, such as, electrical lines and all horizontal and vertical setbacks from other
utilities are maintained at all times, as required.
•The installation of OWTS within flood plain/hazard area shall be avoided. Where suitable sites
outside of flood hazard areas are not available, wastewater dispersal systems may be located in
flood hazard areas on sites where the effects of inundation, under conditions of the design, are
minimized. Applicants are advised to contact the Building Division to inquire whether additional
requirements apply.
•No dispersal systems or replacement areas shall be covered by an impermeable surface or other
material that prevents oxygen transfer to the soil.
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
Page 204 of 252
APPENDIX F
OWTS SETBACK REQUIREMENTS
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
Page 205 of 252
APPENDIX F
Setback Requirements
1. Including porches and steps, whether covered or uncovered, breezeways, roofed porte cocheres, roofed patios, carports, covered
walks, covered driveways, and similar structures or appurtenances.
2. Plus 2 feet for each additional 1 foot of depth in excess of 1 foot below the bottom of the drain line.
MINIMUM HORIZONTAL DISTANCE IN
CLEAR REQUIRED FROM
SEPTIC TANK DISPOSAL
FIELD
SEEPAGE PIT
Building or structures1 8 feet 8 feet 8 feet
Property line adjoining private property 5 feet 5 feet 8 feet
Private water supply wells or monitoring
well4
100 feet 100 feet 150 feet
Public water supply well public where
the depth of the effluent dispersal
system does not exceed 10 feet in
depth7
150 feet 150 feet 200 feet
Public water supply well where the
depth of the effluent dispersal system
exceeds 10 feet in depth7
200 feet 200 feet 200 feet
Streams, springs, and rivers4, 5 100 feet 100 feet3 150 feet
Vernal pools, wetlands, lakes, ponds,
reservoirs, and ocean5
200 feet 200 feet 200 feet
Trees6 10 feet 10 feet 10 feet
Seepage pits3 5 feet 5 feet 12 feet
Disposal field3 5 feet 4 feet2 5 feet
On-site domestic water service line 5 feet 5 feet 5 feet
Distribution box (Water meter) 5 feet 5 feet 5 feet
Pressure public water main 10 feet 10 feet 10 feet
Unstable land mass 100 feet 100 feet 100 feet
ITEM NUMBER: C-1
DATE: 11/13/18
ATTACHMENT: 2
Page 206 of 252
3.Where disposal fields, seepage pits, or both are installed in sloping ground, the minimum horizontal distance between any part of
the leaching system and ground surface shall be 15 feet.
4.Where special hazards are involved, the distance required shall be increased as may be directed by the Local Agency.
5.400 feet from the high water mark if within 1,200 feet of a of a public water system’s surface water catchment. 200 feet from the
high water mark if within >1,200 but <2,500 feet of a public surface water intake. For flowing bodies of water, the surface water
intake shall be upstream or the setback distance.
6.For oak trees the distance shall be 15 feet from the trunk or 5 feet beyond the estimated mature drip line of the branches.
7.Where the effluent dispersal system is within 600 feet of a public water well and exceeds 20 feet in depth the horizontal setback
required to achieve a two-year travel time for microbiological contaminants shall be evaluated. A qualified professional shall
conduct this evaluation. However in no case shall the setback be less than 200 feet.
Setback clearance for dispersal fields/pits shall be measured from the closest edge of the floodway as determined by the
Building Division.
Due to site constraints of a property, located within a flood hazard area, the applicant shall be required to
demonstrate that the proposed OWTS is designed with additional protective measures to prevent
contamination of surface water or runoffs and minimize other risks associated with flooding, such as, infiltration
into the dispersal system when the area is inundated by flood water or the potential of scour over and into the
dispersal system that could adversely impact the absorption capability of the dispersal system and the overall function
of the OWTS.
The City may waive the setback requirements in consideration of a hydrogeological assessment prepared and
certified by a registered Professional Civil Engineer, Geologist, Hydro-geologist, or Engineering Geologist confirming that
neither the proposed dispersal system nor the subject drainage course will ever generate sufficient lateral infiltration
that could negatively impact each other, declaring the location for the proposed dispersal area suitable. The
assessment shall be based on the wetted perimeter within the drainage course, and the zone of influence from the
dispersal system when they are active at their full potential.
The hydrogeological assessment shall be site specific and prepared for the specific dispersal system that is being
proposed. The assessment shall be based on a study of the interrelationship between the geologic conditions and
surface and subsurface waters, conducted in at least one excavation located directly between the dispersal system and
the subject drainage course to a depth not less than 10 feet below the anticipated bottom of the dispersal system.
The hydrogeological assessment shall describe the determining factors and examine the hydrogeological properties that
provided a basis for the conclusion. The assessment shall identify the existence of any hydrogeological elements that
could support the possibility of lateral infiltration, such as, high hydraulic gradients, high hydraulic conductivity of soil,
slow-permeable or impermeable layers, saturated zones, presence of perched water, elevation differential between
the dispersal system and the drainage course, potential inflow of surface and subsurface water and wastewater,
possibility of groundwater recharge, presence of vegetative growth, seasonal variations and climatic factors, etc.
In situations where hydraulic gradient suggests the possibility of effluent migration toward the drainage course, even
though the hydrogeological assessment has concluded that OWTS will not have any impact on the drainage course, the
City may require supplemental treatment and disinfection components.
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APPENDIX G
OWTS EVALUATION FORM
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APPENDIX H
OWTS SEPTIC TANK / FLOW
DESIGN CRITERIA
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APPENDIX I
ALTERNATIVE OWTS SOIL REPLACEMENT
REQUIREMENTS
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APPENDIX I
Soil Replacement Requirements for Alternative OWTS
When there is less than two (2) feet of continuous, natural, undisturbed soil between the bottom of a
proposed dispersal system and bedrock, fractured bedrock, or an impervious layer; the soil has an
absorption rate slower than 120 MPI; or there is inadequate soil depth to groundwater,
manufactured/engineered soil with similar composition characteristics of loamy sand may be added to
or replace the existing native soil so that the site conditions meet or exceed the specific depth and
absorption rate requirements. The compaction characteristics of the manufactured soil shall
correspond as close as possible to the native soil of the surrounding area.
An alternative system is required where engineered soil is used to improve percolation rates, comply
with the two (2) foot minimum soil requirement, or meet the requirements for minimum vertical
setback to groundwater. The total absorption surface area required for the pressurized distribution
system is determined in the manner as typical leach field. Additional effluent treatment including
disinfection shall be required where the possibility of groundwater contamination exists.
Engineered soil shall compensate for the lack of in-place soil or the replacement of poorly drained soil at
a ratio of 1.5 to 1; so that 1.5’ of engineered soil material is required for a 1’ deficiency in the soil
column. In no case shall engineered soil compensate for more than 2’ of the minimum native soil depth
requirements and ground may be built up by engineering/manufactured soil to a maximum of 3’ in
depth.
The manufactured/engineered soil shall be re-composed and re-graded uniformly to provide
homogenized absorption capability, equivalent to soil category of loamy sand. The
manufactured/engineered soil must be certified by a California Registered Professional
Soil/Geotechnical Engineer who shall prove through sieve analysis and other quantifying tests that the
desirable composition and compaction has been achieved.
Adequate number of percolation tests shall be conducted in the area where manufactured soil has been
provided to confirm that the percolation rates are in correlation with loamy sand soil category. The
results of the percolation tests conducted in the area shall affirm uniformity in soil composition and
compaction.
When deemed necessary, the City may require supplemental treatment systems and/or disinfection
component for any existing or new NOWTS to ensure the protection of the underlying groundwater
quality and public health.
ITEM NUMBER: C-1
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APPENDIX J
FUTURE OWTS EXPANSION AREA
REQUIREMENTS
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Future Expansion Area
When the original approval includes the previous percolation test results for 100% future expansion
area and the percolations rates are within the acceptable range of 0.83 to 5.12 gallons per sq. ft. per
day for seepage pits and 5 to 60 minutes per inch for leach fields, no additional percolation tests will
be required as long as the future dispersal fields/pits are installed as originally approved.
For the purposes of the 10% exemption, the current footprint is considered the area occupied by all
existing habitable structures that were permitted at the time when OWTS was initially approved,
i.e., the main house including garage as a one story building. This does not include roof overhangs,
balconies, patios, decks, driveways, carports, swimming pools/spas, storage structures, landscaping
and areas confined by the design of the permitted structures. Any existing detached structure,
habitable or otherwise (e.g., studio, workshop, barn, etc.), that was approved by the City (i.e., No
Impact approval).
The determination made by the professional geologist may be based on evaluations that were
previously conducted by a professional geologist within the area or upon reliable source provided
that the evaluations were conducted consistent with the current departmental guidelines. The
statement made by the professional geologist shall be supported by practical principles and
fundamentals of geology that are based on geological circumstances that exist at the site.
APPENDIX J ITEM NUMBER: C-1
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APPENDIX K
OWTS SEPTIC TANK INSPECTION FORM
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City of Atascadero
Septic Tank Inspection Report
SEPTIC TANK DEFICIENCIES REQUIRING FOLLOW-UP
Reference # Deficiency Typical Corrective Action Permit
Required
NOD-1 Inadequate access to both
compartments
Install risers &/or lids to meet current
code requirements No
NOD-2 Access ports deeper than 24 inches Install risers to within one foot of grade No
NOD-3 Deteriorated access lid(s) Replace lids No
NOD-4 Deteriorated top of tank Replace / repair No
NOD-5 Deteriorated baffle between
compartments Replace / repair No
NOD-6 Other
NTC-1 Severely damaged or deteriorated
septic tank Replace septic tank Yes
NTC-2 Unfilled seepage pit Fill w/ rock or abandon Yes
NTC-3 Cesspool
(permeable sides & bottom)
Abandon & replace with approved septic
tank and disposal field Yes
NTC-4 Failed disposal field with discharge to
surface
Add new field w/ diverter valve - match
or exceed existing field Yes
NTC-5 System constructed without required
permit Obtain permit Yes
NTC-6 Discharge of graywater to ground
surface or drainage course
Direct wastewater to approved disposal
field Yes
NTC-7 Septic tank constructed of metal or
wood Replace septic tank Yes
NTC-8 Septic tank located under structure
Requires abandonment and replacement
with an approved septic tank or removal
or relocation of structure
Yes
RTC-1 Disposal field not adequately
absorbing septic tank effluent
Clear blockage / repair pipe No
Replace / repair disposal field Yes
RTC-2 Inadequate tank capacity Replace with proper size tank Yes
RTC-3 Missing inlet / outlet tee(s) Replace missing tee(s) No
RTC-4 Other
NOD – Notice of Deficiency NTC – Notice to Correct RTC – Recommendation to Correct
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APPENDIX L
OWTS INFORMATIONAL HANDOUT
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