City of Stockton – Municipal Utilities Department
Sewer System Management Plan
City of Stockton
Sewer System
Management Plan
(SSMP)
2025-2031
EXHIBIT 1
T
able of Contents
1 Chapter 1 - Sewer System Management Goal And
Introduction .................................................................................... 7
1.1 Regulatory Context ........................................................................ 7
1.2 Sewer System Management Plan Update Schedule .................... 8
1.3 Sewer System Asset Overview ...................................................... 8
1.4 Supporting Documents ............................................................... 10 2 Chapter 2 - Organization ........................................................ 11
2.1 Regulatory Requirements ............................................................ 11
2.2 Authorized Representative .......................................................... 11
2.3 Responsibility for SSMP Development and Implementation .... 11
2.4 SSO Response and Reporting Chain of Communication .......... 13
2.5 Supporting Documents ............................................................... 15 3 Chapter 3 – Legal Authority .................................................... 16
3.1 Regulatory Requirements ............................................................ 16
3.2 Illicit Discharge Prevention.......................................................... 16
3.3 Agreements with Other Agencies ................................................ 17
3.3.1 Country Club Sanitary District ............................................................................ 17
3.3.2 San Joaquin County Utility Maintenance Division ............................................ 17
3.3.3 Port of Stockton ................................................................................................... 17
3.3.4 California Health Care Facility ........................................................................... 17
3.4 Sewer Construction Standards ................................................... 18
3.5 Collection System Access ........................................................... 18
3.6 Fats, Oils and Grease Discharge Limitations ............................. 18
3.7 Enforcement ................................................................................ 19 4 Chapter 4 – Operation and Maintenance Program ............. 21 EXHIBIT 1
Regulatory Requirements ..................................................................... 21
4.1 Updated Map of Sanitary Sewer System ..................................... 21
4.1.1 Map Corrections .................................................................................................. 21
4.1.2 Map Additions ...................................................................................................... 21
4.2 Preventative Operation and Maintenance Activities .................. 22
4.2.1 Inspection and Condition Assessment .............................................................. 22
4.2.2 Gravity Mains ........................................................................................................ 22
4.2.3 Pump Stations ...................................................................................................... 23
4.3 Training Program .......................................................................... 23
4.3.1 Health and Safety Training .................................................................................. 23
4.3.2 Equipment Training .............................................................................................. 23
4.3.3 Ad Hoc Training .................................................................................................... 24
4.3.4 SSO Training ......................................................................................................... 24
4.4 Equipment and Replacement Part Inventories .......................... 24
4.4.1 Pump Station Redundancy ................................................................................. 24
4.5 Supporting Documents ............................................................... 24 5 Chapter 5 – Design and Performance Provisions ................ 25
5.1 Regulatory Requirements ............................................................ 25
5.1.1 Design and Construction Standards .................................................................. 25
5.1.2 Rehabilitation and Replacement Plan ............................................................... 25
5.1.3 Engineering Judgment Disclaimer ...................................................................... 26
5.1.4 Sanitary Sewer ..................................................................................................... 26
5.1.5 Pump Stations ...................................................................................................... 26
5.2 Procedures and Standards .......................................................... 26
5.3 Supporting Documents ............................................................... 27 6 Chapter 6 – Spill Emergency Response Plan ....................... 28
6.1 Regulatory Requirements ............................................................ 28
6.2 Spill Detection .............................................................................. 29 EXHIBIT 1
6. 3 Spill Response ............................................................................. 29
6.3.1 Investigation and Assessment ............................................................................ 29
6.3.2 Notify Response Personnel ................................................................................. 29
6.3.3 Stop and Contain Spill ......................................................................................... 29
6.3.4 Traffic and Crowd Control ................................................................................... 30
6.3.5 Cleanup and Remediation .................................................................................. 30
6.3.6 Water Quality Monitoring Procedures ................................................................ 30
6.4 SSO Documentation and Reporting ............................................ 31
6.4.1 Internal SSO Reporting ........................................................................................ 31
6.4.2 External SSO Reporting ....................................................................................... 31
6.5 SSO Notification .......................................................................... 31
6.6 SSO Response Training ............................................................... 33
6.6.1 City Personnel ...................................................................................................... 33
6.6.2 Non-City Personnel ............................................................................................. 33
6.7 Supporting Documents ............................................................... 33 7 Chapter 7 – Sewer Pipe Blockage Control Program ............ 34
7.1 Regulatory Requirements ............................................................ 34
7.2 Sewer Pipe Blockage Control Action Plan .................................. 34
7.3 Public Outreach ........................................................................... 35
7.4 Sewer Pipe Blockage Disposal .................................................... 35
7.5 Sewer Pipe Blockage Program Legal Authority ........................... 35
7.6 Grease Removal Device Design Standards and Requirements 35
7.7 Sewer Pipe Blockage Program Enforcement .............................. 36
7.8 Sewer Pipe Blockage Related Preventative Maintenance ......... 36
7.9 Source Control Measures ............................................................ 36
7.10 Supporting Documents ............................................................... 36 8 Chapter 8 – System Evaluation, Capacity Assurance and Capital Improvements ................................................................. 37 EXHIBIT 1
8.1 System Evaluation and Condition Assessment ......................... 37
8.1.1 Wastewater Master Plan ..................................................................................... 37
8.1.2 Smart Covers ........................................................................................................ 37
8.1.3 CCTV Camera Inspection Program .................................................................... 38
8.2 Capacity Assessment and Design Criteria ................................. 38
8.3 Prioritization of Corrective Action ............................................... 39
8.4 Capital Improvement Plan .......................................................... 39
8.5 CIP Schedule ................................................................................ 39
8.6 Supporting Documents ............................................................... 39 9 Chapter 9 – Monitoring, Measurement and Program
Modifications ................................................................................ 40
9.1 Performance Measures ............................................................... 40
9.2 Performance Monitoring and Program Changes ........................ 41
9.3 SSMP Updates.............................................................................. 43
9.4 Supporting Documents ............................................................... 43 10 Chapter 10 – Internal Audits .................................................. 44
10.1 SSMP Audits ................................................................................. 44
10.2 Supporting Documents ............................................................... 44 11 Chapter 11 – Communication Program ............................... 45
11.1 Regulatory Requirements ............................................................ 45
11.2 Communication with Public ........................................................ 45
11.2.1 Website Announcements.................................................................................... 45
11.2.2 Reports ................................................................................................................. 45
11.2.3 Sewer System Master Plan.................................................................................. 45
11.2.4 Public Input .......................................................................................................... 46
11.3 Satellite Agencies ........................................................................ 46
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List of Tables
Table 2-1: Staff Responsible for SSMP
Development and Implementation………………..………11
Table 3-1: Summary of Legal Authorities ……………...……....…...…18 Table 6-1: SSO Notification Contacts ……………..……..……...……..29 Table 9-1: Performance Metrics ……………………….……....…..........41 Table 9-2: SSMP Update Log ……………………………….……..….........42 Table 10-1: SSMP Audit Log……..………………………………................43 EXHIBIT 1
Appendices
Appendix 1 - City of Stockton, City Council Resolution [UPDATE POST COUNCIL]
Appendix 2 – SWRCB Order WQ 2022-0103 DWQ
Appendix 3 - MUD Organizational Charts
Appendix 4 - City of Stockton Sanitary Sewer Overflow
Emergency Response Plan
Appendix 5 - Map Book Sample
Appendix 6 - Cityworks Work Order
Appendix 7 - Training Record Sample
Appendix 8 - Parts Inventory Sample
Appendix 9 – Traffic Control and Flagging Safety Program Appendix 10 - FOG Control Action Plan
Appendix 11 - FOG Enforcement Response Plan
Appendix 12 - GIS SSO Display Sample
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City of Stockton – Municipal Utilities Department
Sewer System Management Plan
Abbreviations and Acronyms
< = Less than
< = Less than or equal to
> = Greater than
> = Greater than or equal to
ADWF - Average Dry Weather Flow
BMP - Best Management Practice
Cal/EPA - California Environmental Protection Agency. State cabinet level agency comprised of six departments / boards: Air Resources Board, Department of Pesticide Regulations, Department of Toxic Substances Control, Integrated Waste Management Board, Office of Environmental Health Hazard Assessment, and the State Water Resources Control Board.
CCSD – Country Club Sanitary District
CCTV - Closed- Circuit Television
CHCF – California Health Care Facility
CIP - Capital Improvement Project
City - City of Stockton
CIWQS - California Integrated Water Quality System, State online database for reporting SSOs
COS - City of Stockton
CMMS - Computerized Maintenance Management System
CVCWA - Central Valley Clean Water Agency
DWQ - Department of Water Quality, a Department within SWRCB EC - Environmental Control
ECO – Environmental Control Officer
FOG - Fats, Oils, and Grease
FSE - Food Service Establishment
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City of Stockton – Municipal Utilities Department
Sewer System Management Plan
GI - Grease Interceptor (an underground multi-chambered vault to trap FOG) GIS - Geographic Information Systems
I&I - Infiltration and Inflow. Groundwater or surface water entering sewer pipes through illegal connections, cracks, breaks, or loose pipe joints.
LRO – Legally Responsible Official
MGD - Million gallons per day, a measurement of flow
MUD - City of Stockton, Municipal Utilities Department
MUTCD – Manual on Uniform Traffic Control Devices
MRP - Monitoring and Reporting Program
NASSCO - National Association of Sewer Service Companies NCYCC – Northern California Youth Correctional Center
O&M - Operations and Maintenance
OES - Office of Emergency Services
Order/General Order - SWRCB Order 2022-0103-DWQ; also referred to as WDR OSHA - Occupational Safety and Health Administration
PACP – Pipeline Assessment Certification Program
PM - Preventative Maintenance
Port – Port of Stockton
SJCUMD – San Joaquin County Utility Maintenance Division SJR - San Joaquin River
SOP - Standard Operating Procedures
SSMP - Sewer System Management Plan (required by SWRCB in 2006) SSO - Sanitary Sewer Overflow (Sewage Spill)
SSOERP - Sanitary Sewer Overflow Emergency Response Plan SWRCB - State Water Resources Control Board, also called State Board, a department within Cal/EPA
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City of Stockton – Municipal Utilities Department
Sewer System Management Plan
WRC – Wastewater Recovery Center sewage treatment plant at 2500 Navy Drive WDR – General Waste Discharge Requirement (in this context refers to SWRCB Order 2022-0103-DWQ; also called General Order).
I. Chapter I – Prohibitions and Provisions
This chapter describes the sewage discharge prohibitions and provisions as stated in the WDR.
A. Prohibition
To meet the provisions contained in Division 7 of the California Water Code and regulations adopted thereunder, the City is required to comply with the following prohibitions:
Any SSO that results in a discharge of untreated or partially treated wastewater to waters of the United States is prohibited, and Any SSO that results in a discharge of untreated or partially treated wastewater that creates a nuisance as defined in California Water Code Section 13050(m) is prohibited.
B. Provisions
As stated in the Order, the City agrees to meet the following provisions:
1. The City must comply with all conditions in the Order. Any noncompliance with the Order constitutes a violation of the California Water Code and is grounds for enforcement action.
2. Nothing in the general WDR shall be:
a) Interpreted or applied in a manner inconsistent with the Federal Clean Water Act, or supersede a more specific or more stringent state or federal requirement in an existing permit, regulation, or administrative/judicial order or Consent Decree;
b) Interpreted or applied to authorize a SSO that is illegal under either the Clean Water Act, an applicable Basin Plan prohibition or water quality standard, or the California Water Code;
c) Interpreted or applied to prohibit a Regional Water Board from issuing an individual National Pollutant Discharge Elimination System permit or WDR, superseding this general WDR, for a sanitary sewer system, authorized under the Clean Water Act or California Water Code; or d) Interpreted or applied to supersede any more specific or more stringent WDR or enforcement order issued by a Regional Water Board.
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City of Stockton – Municipal Utilities Department
Sewer System Management Plan
3. The City shall take all feasible steps to eliminate SSOs. In the event that an SSO does occur, the City shall take all feasible steps to contain and mitigate the impacts of an SSO.
4. In the event of an SSO, the City shall take all feasible steps to prevent untreated or partially treated wastewater from discharging from storm drains into flood control channels or waters of the United States by blocking the storm drainage system and by removing the wastewater from the storm drains.
5. The City shall report SSOs in accordance with Section E1 of the general WDR.
6. The City understands that in any enforcement action, the State and/or Regional Water Boards will consider the appropriate factors under the duly adopted State Water Board Enforcement Policy, and, consistent with this policy, must consider the City’s efforts to contain, control, and mitigate SSOs when considering the California Water Code 13327 factors. In assessing these factors, the State and/or Regional Water Boards will also consider additional factors listed in Section 5 of the WDR.
7. When an SSO occurs, the City shall take all feasible steps and necessary remedial actions to 1) control or limit the volume of untreated or partially treated wastewater discharged, 2) terminate the discharge, and 3) recover as much of the wastewater discharged as possible for proper disposal, including any wash down water.
The City shall implement all remedial actions to the extent they may be applicable to the discharge and not inconsistent with an emergency response plan, including the following:
a) Interception and rerouting of untreated or partially treated wastewater flows around the wastewater line failure.
b) Vacuum truck recovery of sanitary sewer overflows and washdown water.
c) Cleanup of SSO-related debris at the overflow site.
d) System modifications to prevent another SSO at the same location. e) Adequate sampling to determine the nature and impact of the release.
f) Adequate public notification to protect the public from exposure to the SSO.
8. The City shall properly manage, operate, and maintain all parts of the sanitary sewer it owns and operates, and shall ensure that the system operators (including employees, contractors, or other agents) are adequately trained and possess adequate knowledge, skills, and abilities.
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City of Stockton – Municipal Utilities Department
Sewer System Management Plan
9. The City shall allocate adequate resources for the operation, maintenance, and repair of its sanitary sewer system, by establishing a proper rate structure, accounting mechanisms, and auditing procedures to ensure an adequate measure of revenues and expenditures. These procedures must be in compliance with applicable laws and regulations and comply with generally accepted accounting practices.
10. The City shall provide adequate capacity to convey base flows and peak flows, including flows related to wet weather events. Capacity shall meet or exceed the design criteria as defined in the City’s System Evaluation and Capacity Assurance Plan for all parts of the sanitary sewer system owned or operated by the City.
11. The City shall develop and implement a written SSMP and make it available to the State and/or Regional Water Board upon request. A copy of this document must be made available to the public at the Enrollee’s office and/or available on the internet. This SSMP must be approved by the Enrollee’s governing board at a public meeting.
12. In accordance with the California Business and Professions Code sections 6735, 7835, and 7835.1, all engineering and geologic evaluations and judgments shall be performed by or under the direction of registered professionals competent and proficient in the fields pertinent to the required activities. Specific elements of the SSMP that require professional evaluation and judgments shall be prepared by or under the direction of appropriately qualified professionals, and shall bear the professional(s)’ signature and stamp.
13. The elements of the SSMP include:
a) Sewer System Management Plan Goal and Introduction
b) Organization
c) Legal Authority
d) Operations and Maintenance Program
e) Design and Performance Provisions
f) Spill Emergency Response Plan
g) Blockage Control Program
h) System Evaluation and Capacity Assurance, and Capital Improvements
i) Monitoring, Measurement, and Program Modifications
j) Internal Program Audits
k) Communication Plan
14. The SSMP must be updated every six (6) years, and must include any significant program changes. Re-certification by the governing board of the City is required when significant updates to the SSMP are made. To complete the re-certification process, the City shall enter the data in the Online SSO Database and mail the form to the State Water Board, as described in Section 5.5 of the WDR.
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City of Stockton – Municipal Utilities Department
Sewer System Management Plan
The previous SSMP was approved by City Council Resolution No. 11 on May 10, 2011. Resolution No. 11 is included as Attachment C of Appendix 1. The updates required by Order 2022-0103-DWQ were approved by City Council Resolution XX- XXXX on September 23, 2025.
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City of Stockton – Municipal Utilities Department Chapter 1 Sewer System Management Plan Introduction
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1 Chapter 1 - Sewer System Management Goal And
Introduction
The City of Stockton’s (City) Sewer System Management Plan (SSMP) was developed in compliance with the requirements of the State Water Resources Control Board (SWRCB) Order No. 2022-0103-DWQ, Statewide General Waste Discharge Requirement (WDR), dated December 6, 2022. The WDR is intended to provide a consistent statewide approach for reducing Sanitary Sewer Overflows (SSOs) and applies to all publicly owned collection system agencies consisting of more than one mile of pipe or sewer lines and which convey untreated wastewater to a publicly owned treatment facility. Each agency is required to develop and implement an SSMP that describes the procedures and activities necessary to effectively operate and maintain their wastewater collection system in order to prevent SSOs and to ensure proper notification should an SSO occur.
The purpose of the General Order No. 2022-0103-DWQ (Order) is to prevent SSOs.
The City has prepared and implemented this SSMP to support this purpose. The City will monitor the effectiveness of this SSMP and the SSMP implementation to determine if deficiencies exist in the SSMP or SSMP implementation and will take appropriate steps to correct them.
1.1 Regulatory Context
The structure of this document follows the element numbering and nomenclature specified in the WDR. The SSMP includes an introduction as well as prohibitions and provisions stated in the WDR in addition to the eleven elements discussed in the following chapters:
Chapter 1 – Sewer System Management Plan Goal and Introduction Chapter 2 –Organization
Chapter 3 – Legal Authority
Chapter 4 – Operation and Maintenance Program
Chapter 5 – Design and Performance Provisions
Chapter 6 – Spill Emergency Response Plans
Chapter 7 – Sewer Pipe Blockage Control Program
Chapter 8 – System Evaluation, \Capacity Assurance and Capital Improvements Chapter 9 – Monitoring, Measurement and Program Modifications Chapter 10 – Internal Audits
Chapter 11 – Communication Program
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City of Stockton – Municipal Utilities Department Chapter 1 Sewer System Management Plan Introduction
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Appendix 1 provides the City Council Resolution XX-XXXX that approves the steps that the City took to ensure that it complies with the WDR requirement of the development and implementation of an SSMP.
This SSMP is intended to comply with the requirements of the WDR. Each section is organized into sub-sections as follows:
1. The WDR requirement for that element
2. Discussion of that element
3. Supporting documents associated with the discussion of the element, such as a list of supporting information or reference to the appendix (as applicable) Elements within the City’s SSMP are updated as needed to reflect the most up-to- date and accurate information available as well as to identify and document significant program changes. In compliance with Section 5.5 of the WDR, the SSMP will be reviewed and updated every six years. Significant program updates will be recertified by the City’s governing board, as required.
1.2 Sewer System Management Plan Update Schedule
The goal of the SSMP is to provide a plan and schedule to properly manage, operate, and maintain all parts of the City’s sanitary sewer system to prevent SSOs and mitigate any SSOs that do occur. A copy of the Order and the certified SSMP is available to personnel operating and maintaining the City’s sanitary sewer system.
A copy of the Order is also included as Attachment B of Appendix 1 of this SSMP.
Pursuant to California Water Code Section 13267(b), the City will also comply with the SSO “Monitoring and Reporting Program No. 2022-0103 DWQ” and all future revisions, included by reference in the Order.
1.3 Sewer System Asset Overview
The City, located in San Joaquin County (County), California, owns and operates a wastewater collection, treatment and disposal system which provides sewer service to the City, Port of Stockton, and the surrounding urbanized County areas. The City’s Wastewater Recovery Center (WRC), formerly Regional Wastewater Control Facility (RWCF), has a permitted 55 million gallon per day advanced tertiary treatment capacity and is located on over 800 acres in the southwestern portion of the City, adjacent to the San Joaquin River. On average, the WRC treats 30 million gallons of wastewater daily and discharges into the San Joaquin River under a National Pollutant Discharge Elimination System (NPDES) permit.
The City’s sewage collection system consists of approximately 900 miles of gravity sewer main, 554 miles of lower lateral pipe, 27 pump stations, and 30 miles of pressurized force main that route sewage to the WRC. The City completed the RWCF Modifications Project. The Project included planning, designing, and constructing EXHIBIT 1
City of Stockton – Municipal Utilities Department Chapter 1 Sewer System Management Plan Introduction
July 2025 9
wastewater treatment facilities that can meet current regulatory treatment goals and balance future potential regulatory requirements for most conditions in a cost- effective manner, while extending the life of existing assets within the available budget of $230 million. The project includes a new headworks pump station, rehabilitated primary treatment, new secondary and tertiary treatments, and new and remodeled personnel buildings. The Basis of Design Report (BDR) for those facilities incorporates many of the Phase 2 projects identified in the 2011 Capital Improvement and Energy Management Plan as well as those improvements to meet the City’s current National Pollution Discharge Elimination System (NPDES) permit issued by the Central Valley Regional Water Quality Control Board. The City’s sewer collection system serves a population of approximately 320,030 (2024 CA Dept of Finance). The City has areas of unincorporated agricultural property. New connection requests from developments outside the City limits challenge the City’s sewer system capacity during periods of prospective population and industrial growth.
Figure 1-2 is an up-to-date map of the City wastewater collections system.
The City wastewater collections system has approximately 90,000 service connections. Of those connections, approximately 95% are residential, 4.7% are commercial and less than 1% are industrial or institutional. The City maintains responsibility for operation and maintenance of lateral service connections upto the owner’s cleanout; private property owners are responsible for the operation and maintenance of their connecting laterals upstream of, and including, their cleanout connection in accordance with Municipal Code Chapter 13.50.
The City conveys and treats waste discharges from five (5) satellite agencies. The satellite agencies and their respective waste discharge identification (WDID) numbers, if applicable, are as follows:
Country Club Sanitary Maintenance District – WDID: N/A San Joaquin County Maintenance Division – WDID: 5SSO11035, 5SSO11471, 5SSO11480, 5SSO11482, 5SSO11483, 5SSO11484, 5SSO11485, 5SSO11486 Port of Stockton – WDID: N/A
California Health Care Facility – WDID: 5SSO18099
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City of Stockton – Municipal Utilities Department Chapter 1 Sewer System Management Plan Introduction
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Figu
re 1-1 - Satellite Agencies
1.4 Supporting Documents
Appendix 1: City of Stockton, City Council authorizing the approval and implementation of the Sewer System Management Plan update. City of Stockton Council Resolution 01-0108, SSMP 2011-2015 Approval City of Stockton Council Resolution 2016-03-26-0302, SSMP 2016-2020 Updates Approval
City of Stockton Council Resolution XXXXXX, SSMP 2025-2031 Updates Approval [UPDATE POST COUNCIL]
Wastewater Recovery
CenterCity of Stockton
Country Club Sanitary
Maintenance District
San Joaquin County
Utility Maintenance
Division
Port of Stockton
California Health Care
Facility
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City of Stockton – Municipal Utilities Department Chapter 2 Sewer System Management Plan Organization
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2 Chapter 2 - Organization
This chapter identifies the Authorized Representative to meet the SWRCB requirements for completing and certifying spill reports and the implementation and development of the SSMP. This chapter also includes City staff responsible for managing and maintaining the wastewater collection system and the responders to SSO events.
The organization elements of the City’s SSMP and SSOERP are designed to ensure that every report of a SSO is dispatched to the appropriate response personnel to minimize the effects of the overflow with respect to its adverse impacts on public health, the environment, and property. This chapter fulfills the Organization Requirement of the SSMP as mandated by the GWDR.
2.1 Regulatory Requirements
The WDR section D.2 requirements for the Organization of the SSMP are listed below:
(a) The name of the Legally Responsible Official as required in section 5.1 (Designation of a Legally Responsible Official) of the Order; (b) The position titles, telephone numbers, and email addresses for management, administrative, and maintenance positions responsible for implementing specific Sewer System Management Plan elements; (c) Organizational lines of authority; and
(d) The chain of communication for reporting SSOs, from receipt of a complaint or other information, including the person responsible for reporting SSOs to the State and Regional Water Board and other agencies if applicable (such as County Health Officer, County Environmental Health Agency, Regional Water Board and/or State Office of Emergency Services (OES)).
2.2 Authorized Representative
The City’s authorized representative in all wastewater collection system matters is the Director of Municipal Utilities (Director). The Director is responsible for implementing and maintaining all elements of this SSMP. The Deputy Municipal Utilities Director of Collections is authorized to act in the absence of the Director.
The Legally Representative Official for the City of Stockton is:
Mel Lytle, Ph.D., Director of Municipal Utilities: office telephone 209-937-8700
2.3 Responsibility for SSMP Development and Implementation The City staff responsible for the SSMP development and implementation is listed in Table 2-1 below.
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City of Stockton – Municipal Utilities Department Chapter 2 Sewer System Management Plan Organization
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Table 2-1: Staff Responsible for SSMP Development and Implementation SSMP Element Name Position Phone Number
Goals &
Organization
Section D.1 & D.2
Mel Lytle,
Ph.D.
Director (209) 937-8700
Legal Authority
Section D 3
Mel Lytle,
Ph.D.
Director (209) 937-8700
Operation and
Maintenance
Program
Section D.4
Jeff
Marasovich
Chris DeVore
Eric Johnson
Deputy Director
Collections Supervisor
Maintenance Supervisor
(209) 937-7113
(209) 937-8725
(209) 937-8788
Design and
Performance
Provisions
Section D.5
Ali
Gharegozloo
Deputy Director (209) 937-8787
Spill Emergency
Response Plan
Section D.6
Richard
Stiffler
Chris DeVore
Environmental Control
Technical Service Manager
Collections Supervisor
(209) 937-8740
(209) 937-8725
Sewer Pipe
Blockage Control
Program
Section D.7
Richard
Stiffler
Environmental Control
Technical Service Manager
(209) 937-8740
System Evaluation,
Capacity
Assurance and
Capital
Improvements
Section D.8
Ali
Gharegozloo
Deputy Director (209) 937-8787
Monitoring &
Program
Modifications
Section D.9
Jeff
Marasovich
Chris DeVore
Deputy Director
Collections Supervisor
(209) 937-7113
(209) 937-8725
Internal Audits
Section D10
Paul Acosta Program Manager III (209) 937-8994
Communication
Program
Section D 11
Jeff
Marasovich
Deputy Director (209) 937-7113
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City of Stockton – Municipal Utilities Department Chapter 2 Sewer System Management Plan Organization
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Figure 2-1 Staff Responsible for SSMP Organizational Chart
2.4 SSO Response and Reporting Chain of Communication
The City currently maintains SSO Response Forms that provide the required chain of communication information and are available for review in the City’s SSOERP.
Chapter 6 – Spill Emergency Response Program details the procedures and responsibilities during an SSO event, and the process is briefly summarized below.
Once a detection of an SSO is reported, either by the public or City personnel, MUD personnel will be dispatched to the scene. Once at the scene MUD staff will:
Investigate the site
Determine the cause of the problem
Request reinforcement, if necessary
If possible, notify the responsible party if SSO is not caused by the City’s collection system
Contain and mitigate
Correct the SSO and clean-up
Notify the proper agencies (RWQCB, San Joaquin County Public Works, Delta Water Supply Project, Alameda County Water District, Contra Costa Water District, Santa Clara Valley Water District), as appropriate EXHIBIT 1
City of Stockton – Municipal Utilities Department Chapter 2 Sewer System Management Plan Organization
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Document response actions
Complete the internal SSO Response Forms
Report the SSO in the CIWQS SSO Online Reporting Database No later than the next business day, the internal SSO Response Forms are forwarded to the Collection System Supervisor and the Environmental Control Officer (ECO) as appropriate. Any debriefings of the respondents to the SSO will be conducted by the ECO. The internal SSO Response Forms are utilized to document the SSO event, communicate SSO event to all appropriate City staff internally, enter all required information into the CIWQS on-line database, and to certify the SSO by the Legally Responsible Official (LRO).
The organization chart identifies the steps taken when an SSO is identified. A copy of the City of Stockton’s “Sanitary Sewer Overflow Emergency Response Plan” is available in Appendix 4.
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City of Stockton – Municipal Utilities Department Chapter 2 Sewer System Management Plan Organization
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Figure 2-2: SSO Response and Reporting Chain of Communication
2.5 Supporting Documents
[UPDATE POST COUNCIL]Appendix 1: City of Stockton, Council Resolution No.
Appendix 3: Municipal Utilities Department Organization Charts Appendix 4: City of Stockton Sanitary Sewer Overflow Emergency Response Plan (SSOERP)
SSO Deteted
Call from Public via 24-
Hour Emegency Service
Center (209) 937-8341
Customer Service or Duty
Person notified of SSO
Field Crew dispatched to
mitigate SSO
Field crew sets up traffic
control, mitigates SSO
and completes SSO
Response Forms
Determination of SSO
category made
Category 1 or 2
Environmental Control
Division notified of SSO
Environmental Control
Division reviews and
verifies SSO Response
Forms
Input and Certification of
SSO into CIWQS
Implementation of water
monitoring if applicable
Category 3 or 4
Collections Supervisor
notified of SSO
Collections Supervisor
reviews and verifies SSO
Respons Forms
Input and Certification of
SSO into CIWQS
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City of Stockton – Municipal Utilities Department Chapter 4 Sewer System Management Plan Operation and Maintenance
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3 Chapter 3 – Legal Authority
This chapter of the SSMP discusses the City’s legal authority to comply with the SSMP requirements, as provided in its Municipal Code and agreements with satellite agencies. All Stockton Municipal Codes can be viewed and downloaded on the City’s website: www.stocktongov.com.
3.1 Regulatory Requirements
The WDR section D.3 requirements for the Legal Authority of the SSMP are summarized below:
The City must demonstrate, through collection system use ordinances, service agreements, or other legally binding procedures, that it possesses the necessary legal authority to:
(a) Prevent illicit discharges into its sanitary sewer system (examples may include I/I, stormwater, chemical dumping, unauthorized debris and cut roots, etc.). (b) Require that sewers and connections be properly designed and constructed. (c) Ensure access for maintenance, inspection or repairs for portions of the lateral owned or maintained by the Public Agency.
(d) Limit the discharge of fats, oils and grease and other debris that may cause blockages.
(e) Enforce any violation of its sewer ordinances, service agreements, or other legally binding procedures; and
(f) Obtain easement accessibility agreements for locations requiring sewer system operations and maintenance, as applicable.
3.2 Illicit Discharge Prevention
Contained in the Stockton Municipal Code, Chapter 13, are provisions that restrict what may be put in the sanitary sewers and storm sewers. Stockton has a separate storm water and wastewater sewer system. The following list provides the pertinent Municipal Codes that prevent illicit discharges into the City’s sanitary sewer system. Title 13, Chapter 13.08.100 – General Discharge Prohibition Title 13, Chapter 13.08.110 – Quantity of Discharge
Title 13, Chapter 13.08.120 – Limitations on Point of Discharge Title 13, Chapter 13.08.140 – Excessive Discharge
Title 13, Chapter 13.08.160 - Holding Tank Waste.
Title 13, Chapter 13.08.170 - Wash Rack Waste.
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Title 13, Chapter 13.08.180 - Draining of Swimming Pools Title 13, Chapter 13.08.190 - Conditions of Laterals and Sewer Connections Title 13, Chapter 13.08.200 - Connection to Sanitary Sewerage System
3.3 Agreements with Other Agencies
The City has additional legal requirements with other agencies, which are described in this section for reference.
3.3.1 Country Club Sanitary District
The City has an agreement with the Country Club Sanitary District (CCSD) to convey and treat all of its wastewater discharged into the City’s collection system. CCSD provides wastewater collection services to approximately 1,100 residents in small County area bounded by Pershing Avenue to the east, Smith Canal to the south, Michigan Avenue to the north and Franklin Avenue to the west. As part of the regionalization of wastewater services, the City entered into an agreement with CCDS on 1979 to provide wastewater conveyance and treatment services.
3.3.2 San Joaquin County Utility Maintenance Division
The City has an agreement with the San Joaquin Utility Maintenance Division (SJCUMD) to convey and treat all of its wastewater discharged into the City’s collection system from the Pacific Gardens Sanitary District, Lincoln Village Maintenance District and the Colonial Heights Maintenance District. As part of the regionalization of wastewater services, the City entered into an agreement with SJCUMD on 1976 to provide wastewater conveyance and treatment services.
3.3.3 Port of Stockton
The City has an agreement with the Port of Stockton (Port) to convey and treat all of its wastewater discharged into the City’s collection system from Rough and Ready Island. The Port provides wastewater collection services to approximately 5 million square feet of warehouses, 1 million square feet of transit sheds and dock buildings fronting the Stockton Deep Water Channel. The City originally contracted with the Navy in 1973 when Rough and Ready Island was managed by the Navy. As part of the transfer of Rough and Ready Island from the Navy to the Port, the City entered into an updated agreement with the Port in 2000.
3.3.4 California Health Care Facility
The City has an agreement with the California Health Care Facility (CHCF) to convey and treat all of its wastewater discharged into the City’s collection system. CHCF is EXHIBIT 1
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a 1.4 million square foot facility is certified to provide intermediate level care and to complement less acute treatment for the Department of Corrections and Rehabilitation. CHCF is comprised of 54 buildings that provides housing and treatment for approximately 1,700 inmate-patients and is staffed by approximately 2,500 people.
3.4 Sewer Construction Standards
Contained in the Stockton Municipal Code, Chapter 13 and Chapter 15 are provisions that require sewers, connections, and laterals are properly designed and constructed.
Title 13, Chapter 13.08.020 - Reference to Plumbing Ordinance Title 13, Chapter 13.50.040 – Standards for Maintenance of Laterals Title 13, Chapter 13.50.060 – Repair Requirements
Title 15, Chapter 15.08.010 - Adoption of California Building Code Title 15, Chapter 15.16.010 - Adoption of California Plumbing Code Title 15, Chapter 15.20.010 - Adoption of California Mechanical Code All plumbing Ordinances shall remain in full force an effect, and nothing contained herein shall be construed as to waive any requirements contained therein.
City of Stockton has Standard Specifications for Sewer construction adopted November 25, 2003: Section 71 – Sanitary Sewers and Storm Sewers and Section 74 – Storm and Sanitary Pumping Plant Equipment. The Standard Specifications may be found on the City’s web page.
3.5 Collection System Access
Contained in the Stockton Municipal Code, Chapter 13 are provisions that allow City access for maintenance, inspection, or repairs for portions of the laterals owned and maintained by the City.
Title 13, Chapter 13.08.340 - Inspection, Sampling, and Photographs Title 13, Chapter 13.50.040 – Standards for Maintenance of Laterals Title 13, Chapter 13.50.060 – Repair Requirements
3.6 Fats, Oils and Grease Discharge Limitations
Contained in the Stockton Municipal Code, Chapter 13, are provisions that limit the discharge of fats, oils, and grease into the wastewater collection system. Title 13, Chapter 13.40 - Discharges of Fats, Oils, and Grease from Food Service Establishments
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3.7 Enforcement
Contained in the Stockton Municipal Code, Chapter 13, are provisions that allow the City to enforce any violation of its sewer ordinances including the authority to refuse, discontinue or terminate service if appropriate. The Municipal Code also empowers the City to issue administrative, civil, and criminal penalties that may accrue to users that violate code provisions.
Title 13, Chapter 13.08.380 - Suspension of Permit.
Title 13, Chapter 13.08.390 – Refusal, Discontinuance or Termination of Service
Title 13, Chapter 13.50.050 – Public Nuisance Conditions
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Table 3-1: Summary of Legal Authorities
Requirement Municipal Code Standard Plans
and
Specifications
Prevent Illicit Discharges
Prevent illicit discharges into the wastewater
collection system
13.08.010, 13.08.100
Limit the discharge of fats, oils, and grease
and other debris that may cause blockages
13.40.010, 13.40.040
Control infiltration and inflow (I/I) from
private service laterals
13.08.160, 13.08.170,
13.08.180,
Proper Design and Construction
Require that sewers and connection be
properly designed and constructed
13.08.020, 15.08.010,
15.16.010, 15.20.010
Section 71,
Drawing 45,
45A, 45B, 46,
46A, 47, 47A,
47B, 48, 49
Require proper installation, testing, and
inspection of new and rehabilitated sewers
13.08.020, 13.08.340,
15.16.010
Section 71
Access to Laterals
Require that laterals and connection be
properly designed and constructed
13.08.190, 13.50.010 Section 71,
Drawing 62, 63,
64 Clearly define City responsibility and policies 13.50.030, 13.50.060 Ensure access for maintenance, inspection,
or repairs for portions of the service lateral
owned or maintained by the City
13.50.040
FOG Source Control
Requirements to install grease removal
devices (such as traps or interceptors)
13.40.080
Design standards for the grease removal
devices
13.40.100 Drawing 65,
65A, 66
Maintenance requirements, BMP
requirements, record keeping and reporting
requirements for grease removal devices
13.40.060
Authority to inspect grease producing
facilities
13.08.040, 13.40.010
Enforcement
Enforce any violations of its sewer
ordinances
13.08.030, 13.08.040,
13.08.380, 13.08.390,
13.50.110
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4 Chapter 4 – Operation and Maintenance Program
This chapter of the SSMP presents the City’s wastewater collection system operations and maintenance (O&M) program.
Regulatory Requirements
The WDR section D.4 requirements for the Operations and Maintenance Program are:
(a) Maintain an up-to-date map of the sanitary sewer system, showing all gravity line segments and manholes, pumping facilities, pressure pipes and valves, and applicable stormwater conveyance facilities.
(b) Describe routine preventative operation and maintenance activities by staff and contractors, including a system for scheduling regular maintenance and cleaning of the sanitary sewer system with more frequent cleaning and maintenance targeted at known problem areas. The Preventative Maintenance (PM) program should have a system to document scheduled and conducted activities, such as work orders.
(c) Provide training on a regular basis for staff in sanitary sewer system operations and maintenance and require contractors to be appropriately trained. (d) Provide equipment and replacement part inventories, including identification of critical replacement parts.
4.1 Updated Map of Sanitary Sewer System
The City of Stockton maintains ”Cityworks” for use as the Computerized Maintenance Management System (CMMS) and “ArcGIS” (map software available to selected City Employees). Associated hard copy block map books for Stormwater and Sanitary Sewer are available for each field crew. The City utilizes a web based browser that allows a read only version of the maps to be viewed in digital format.
4.1.1 Map Corrections
Maps are updated on an as needed basis with information obtained from field crews.
The official map “office copy” is maintained at the MUD Collection Systems Office.
When updates are found in the field, the field person notes on a copy of the map book page and informs the City’s GIS Technician. The GIS Technician then updates the map book and the digital map files.
4.1.2 Map Additions
New subdivisions, and extensions to existing facilities are submitted by the Public Works Department to MUD, and the digital map files are updated after the system segment is accepted by the City.
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4.2 Preventative Operation and Maintenance Activities
City of Stockton, Municipal Utilities Department (MUD) uses Cityworks Software to maintain a catalogue of the storm and sewer system assets: pipes, valves, maintenance holes, lamp holes and pump stations. This system can generate, track and print work orders for preventative maintenance, corrective maintenance, and emergency repairs.
4.2.1 Inspection and Condition Assessment
The City of Stockton has conducted closed circuit television inspection, (CCTV) of nearly all its gravity sewer lines. The City conducts on-going CCTV inspection by collection system area to determine the overall condition of that respective area. The findings of the CCTV inspections are used to determine CIP projects and immediate rehabilitation and replacement needs.
CCTV inspections are conducted in accordance with the current professional practices for sewer line inspection as recommended by National Association of Sewer Service Companies (NASSCO), and the Pipeline Assessment Certification Program (PACP), guidelines.
Any sewer line found to have defects, such as stoppages or physical damage, from any cause, will be cleaned and/or repaired on a first priority basis. Stoppages and/or damage may be discovered by City crews doing regular maintenance or by the public at large. Citizens are encouraged to call the City of Stockton Hot Line, at (209) 937- 8341, any time they witness or experience a sewer related problem.
Cityworks data is used to analyze data from system inspections and maintenance activities. Analysis is used to determine system areas and components which are prone to root-intrusions which potentially results in system backups or failures.
4.2.2 Gravity Mains
Collection system PM on sewer lines and storm water catch basins is done by the Collections Division. Sewer lines are put on a cleaning frequency based on historical information such as overflows, blockages, historical cleaning findings, and repairs.
The historical information determines the cleaning frequency and is adjusted when necessary.
Preventative maintenance is scheduled on either a monthly, quarterly, semi-annual, annual or multi-annual cleaning frequency based on historical information.
Cityworks produces work orders for the requested period with a due date of 14-days.
Staff are assigned the work by the Collection Systems Supervisor. If a line has a service problem between PM work orders or a line with no previous history develops a problem; the line is cleaned and CCTV’d. The PM schedule is re-evaluated and the line may move to the next more frequent PM schedule, (semi-annual moves to quarterly, quarterly moves to monthly, etc), or be moved to the next less frequent PM schedule, repaired or scheduled for other appropriate corrective action.
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Service calls are evaluated by Collections systems crews and if additional work is required the work is prioritized and assigned to City staff for repair. As an alternative, subcontractors may be contacted for extensive repair work, line rehabilitation or line replacement. MUD has contracts with local construction companies for backlog repair work as well as street and sidewalk restoration.
All gravity sanitary sewers 15-inches in diameter or smaller are currently scheduled to be cleaned at least once every seven years. Sewer mains larger than 15-inches in diamter will be cleaned on an add needed basis.
4.2.3 Pump Stations
Preventative maintenance at sanitary lift and pump stations and storm water pump stations are done by Maintenance Division. Cleaning at sanitary lift/pump stations may be done by Collections Division at the request of the Maintenance Division if a problem is noticed with the wet well or lines (i.e. “grease cap” in wet well). The City’s CMMS processes capture data for root cause analysis and inform maintenance program development for preventative maintenance activities in problem areas, such as areas with detected root-intrusion, or other system failure causes.
4.3 Training Program
MUD has established training programs for all employees in the department. Training records are maintained with the divisional Program Managers and MUD Safety Division.
4.3.1 Health and Safety Training
The following training is provided to all Collections and Maintenance Division staff:
First Aid & CPR & AED Trenching & Shoring
Lock Out/Tag Out Procedures Blood-borne Pathogens
First Responder Awareness Confined Space Entry
Traffic Control Falls & Fall Protection
Hazard Communication Hazardous Materials Management Plan Overflow Emergency Response Customer Service
Heat Stress Prevention Hand Protection
Eye Safety
Self-contained Breathing Apparatus
(with Fit-testing in March every year)
4.3.2 Equipment Training
The following specific equipment training is offered as needed for appropriate staff:
Hydraulic Rodder Combination hydro/vac
Backhoe Operation Forklift Training
CCTV (use and repair) Boom & Crane Training
Arc Flash Protection
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4.3.3 Ad Hoc Training
The City field staff also conducts monthly tail-gate safety meetings. There is also available; computer and software training, pump and engine maintenance, electrical, mechanical, environmental course work and study.
4.3.4 SSO Training
The City requires contractors to be properly trained with SSO procedures and all contractors are made aware of the City’s SSO Emergency Response Plan (SSOERP) documents and procedures. All contractors are given a copy of the SSOERP prior to the start of work.
4.4 Equipment and Replacement Part Inventories
Stockton MUD maintains a Stores Warehouse at 2501 Navy Drive with replacement parts such as maintenance hole covers, consumable parts such as gloves, lamps and batteries, and replacement parts for valves, pumps and motors. Replacement parts have been identified for pumps, motors, and valves and are in stock at MUD Stores.
4.4.1 Pump Station Redundancy
The City’s wastewater pump stations are designed with redundancy such that they have a backup pump available for immediate operation in the event of pump failure.
The large capacity pump stations have spare mechanical seals stored on site.
4.5 Supporting Documents
Appendix 5: Map Book Sample
Appendix 6: Cityworks Work Order
Appendix 7: Training Record Sample
Appendix 8: Parts Inventory Sample
2035 Wastewater Master Plan
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City of Stockton – Municipal Utilities Department Chapter 5 Sewer System Management Plan Design and Performance Provisions July 2025 25
5 Chapter 5 – Design and Performance Provisions
This chapter of the SSMP documents the City’s design and performance provisions.
5.1 Regulatory Requirements
The WDR section D.5 requires the City to have the following design and performance provisions:
(a) Design and construction standards and specifications for the installation of new sanitary sewer systems, pump stations and other appurtenances; and for the rehabilitation and repair of existing sanitary sewer systems; (b) Procedures and standards for inspecting and testing the installation of new sewers, pumps, and other appurtenances and for rehabilitation and repair projects.
5.1.1 Design and Construction Standards
City of Stockton has Design and Construction Standard Specifications and Standard Drawings adopted by the City (latest revision November, 2003) as a guide for standardization of Public Works projects with in the City. These Standard Specifications and Standard Drawings are available on the City’s website:
www.stocktongov.com.
The Design and Construction Standard Specifications contain guidelines and requirements for the development plan and premit processing procedures under the following sections:
Section 4 – Scope of Work
Section 5 – Control of Work
Section 6 – Control of Materials
Section 7 – Legal Relations and Responsibility
Section 8 – Prosecution and Progress
Section 9 – Measurement and Payment
5.1.2 Rehabilitation and Replacement Plan
The City of Stockton has conducted closed circuit television inspection, (CCTV) of nearly all its gravity sewer lines. The City condutcs on-going CCTV inspection by collection system area to determine the overall condition of that respective area. The findings of the CCTV inspections are used to determine CIP projects and immediate rehabilitation and replacement needs.
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5.1.3 Engineering Judgment Disclaimer
The Standard Specifications and Standard Drawings are not intended to be a substitute for professional engineering knowledge, experience or judgment. Any deviations from what is contained in the documents must be approved by the City Engineer.
The City’s Design and Construction Standard Specifications and Standard Drawings, for use in all City construction contracts, include a comprehensive set of specifications for sewer system pipelines and facility construction. The City contracts with a design engineer, when needed, for the development of design drawings and specifications for sewer pipeline and pump station rehabilitation and replacement projects.
5.1.4 Sanitary Sewer
The design and construction standards for sanitary sewer systems are addressed in section 71 of the Standard Specifications and Standard Drawings. Details for sanitary sewer systems are also provided in Standard Drawings 45 thru 66.
5.1.5 Pump Stations
The design and construction standards for pump stations are prepared in accordance with the Municipal Utilities Department Pump Station Guidelines and as approved by the Director of Municipal Utilities. The Municipal Utilities Department Pump Station Guidelines document is also available on the City website. Temporary maintenance holes for pump stations are provided in Standard Drawings 67 and 67A.
5.2 Procedures and Standards
Inspection and testing of new sewers, pumps and other appurtenances is addressed in the Standard Specifications and Standard Drawings document section 71. The following list provides the sections pertaining to inspection and testing of the sanitary sewer system:
71-1.11 – Testing
71-1.11A – Cleaning
71-1.11B – Deflection Test for ABS, PVC and HDPE Pipe 71-1.11C - General
71-1.11D – Water Exfiltration Test
71-1.11E – Water Infiltration Test
71-1.11F – Air Pressure Test
71-1.11G – Televising of Sanitary Sewers
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5.3 Supporting Documents
City of Stockton Standard Specifications and Standard Drawings Municipal Utilities Department Pump Station Guidelines
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City of Stockton – Municipal Utilities Department Chapter 6 Sewer System Management Plan Spill Emergency Response Plan July 2025 28
6 Chapter 6 – Spill Emergency Response Plan
The City developed a Sanitary Sewer Overflow Emergency Response Plan (SERP) and a Sanitary Sewer Overflow Standard Operating Procedure (SOP) that are designed to support an orderly and effective response to spills. The SERP is included as Appendix 4 of this SSMP, the SOP is included as Attachment 5 of the SERP. The SERP provides guidelines for the City personnel to follow in responding to, cleaning up, and reporting spills that may occur within the City’s service area.
6.1 Regulatory Requirements
As required by WDR section D.6, the City shall develop and implement an overflow emergency response plan that identifies measures to protect public health and the environment. At a minimum, this plan must include the following:
(a) Notify primary responders, appropriate local officials, and appropriate regulatory agencies of a spill in a timely manner;;
(b) Notify other potentially affected entities (for example, health agencies, water suppliers, etc.) of spills that potentially affect public health or reach waters of the State;
(c) Comply with the notification, monitoring and reporting requirements of this General Order, State law and regulations, and applicable Regional Water Board Orders;
(d) Ensure that appropriate staff and contractors implement the Spill Emergency Response Plan and are appropriately trained;
(e) Address emergency system operations, traffic control and other necessary response activities;
(f) Contain a spill and prevent/minimize discharge to waters of the State or any drainage conveyance system;
(g) Minimize and remediate public health impacts and adverse impacts on beneficial uses of waters of the State;
(h) Remove sewage from the drainage conveyance system;
(i) Clean the spill area and drainage conveyance system in a manner that does not inadvertently impact beneficial uses in the receiving waters; (j) Implement technologies, practices, equipment, and interagency coordination to expedite spill containment and recovery;
(k) Implement pre-planned coordination and collaboration with storm drain agencies and other utility agencies/departments prior, during, and after a spill event;
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(l) Conduct post-spill assessments of spill response activities; (m) Document and report spill events as required in this General Order; and (n) Annually, review and assess effectiveness of the Spill Emergency Response Plan, and update the Plan as needed.
6.2 Spill Detection
The processes that are employed to notify the City of the occurrence of an spill include: observation by the public, receipt of an alarm, or observation by City staff during the normal course of their work. The public can notify the City of an spill by calling the 24-hour emergency service center at (209) 937-8341. The emergency service center then notifies Customer Service or the after hours Stand-by Duty Person to initiate the spill response.
6.3 Spill Response
When a report of a possible spill is received, it triggers an immediate response to identify and correct the problem. The following sections outline the response procedures undertaken by the City during an spill.
6.3.1 Investigation and Assessment
Following notification of a possible sanitary sewer overflow, a crew is dispatched to conduct an investigation. The initial response team is responsible for assessing the cause of the problem and determining the level of effort needed to correct the problem. If the overflow is confirmed, the Supervisor or highest level staff person on- site documents the relevant spill information on the spill response forms.
6.3.2 Notify Response Personnel
The Supervisor or highest level staff person that initially arrives on site is responsible for immediately notifying appropriate spill response personnel. Response personnel are dispatched to the site based on the following criteria:
Source of the spill
Volume of the spill
Severity of the spill
6.3.3 Stop and Contain Spill
The response personnel are responsible for determining the most effective method(s) to:
Control or limit the spill volume discharged;
Terminate the spill as rapidly as possible; and
Contain the spill as rapidly as possible.
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The response personnel then begin to mitigate the spill.
6.3.4 Traffic and Crowd Control
During an spill, traffic control or crowd control may be required depending on site conditions. The response personnel are responsible for determining the most effective method(s) to:
Safely control traffic flow around the spill area; and Provide crowd control measures to ensure public safety at all times.
The following City Departments may be contacted to assist with traffic and crowd control measures:
Stockton Police Department (209) 937-7911
Stockton Public Works Department (209) 937-8341
Procedures to address operations, traffic and crowd control are contained in the SERP and SOP for Traffic Control and Flagging Safety Program. Procedures and guidance follow the recommendations of the Manual on Uniform Traffic Control Devices (MUTCD).
6.3.5 Cleanup and Remediation
The response personnel are responsible for determining the most effective clean-up method and remediation procedures and determine when adequate remediation procedures have been completed.
6.3.6 Water Quality Monitoring Procedures
The SSOERP outlines the water quality monitoring procedures if an SSO is discharged to surface water. The impact of the spill on water quality is assessed by visual inspection for abnormal conditions such as effects on aquatic life, abnormal color, and odors. A Receiving Water Inspection/Sampling Log is used to record the findings of the inspection. Photographs are also used to document the extent of the spill, including the discharge location, and any adverse effects to receiving water or surrounding areas.
For discharges to surface water, public health warning signs are posted to protect the public from exposure to potentially contaminated water:
Signs are posted in the affected area at appropriate intervals on both sides of the banks, if possible, of the receiving water body.
Due to the occurrence of posted signs periodically being vandalized, stolen, wind-blown, or removed, City staff will maintain a log and map of sign placement and removal. The signs are checked on a regular basis by City staff and replaced or repositioned as necessary to make certain they are visible to the public throughout the entire spill event.
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For spills greater than 1,000 gallons in volume and which enter a surface water, public health warning notifications are distributed door-to-door in known areas where residents utilize the surface water source for landscape irrigation purposes.
6.4 SSO Documentation and Reporting
All spills are thoroughly investigated and documented for use in managing the wastewater collection system and meeting established reporting requirements. The procedures for investigating and documenting spills are:
6.4.1 Internal SSO Reporting
Internal SSO reporting process is dependent on the category of spill as determined by the responding field crew.
6.4.1.1 Category 1 or 2
For Category 1 and 2 spills, the response personnel complete the SSO Response Forms and turn them into the Environmental Control Division. An Environmental Control Officer (ECO) reviews the response forms and verifies the information pertaining to the spill. The Regulatory Control Officer serves as the Legally Responsible Official (LRO) and is responsible for certifying and entering all required information into the State Water Resources Control Board (SWRCB) California Integrated Water Quality System (CIWQS) Online SSO Reporting System for category 1 and 2 spills.
6.4.1.2 Category 3 or 4
For Category 3 or 4 spills, the response personnel complete the SSO Response Forms and turn them into the Collections Supervisor. The Collections Supervisor reviews the response forms and verifies the information pertaining to the spill. The Collections Supervisor serves as a backup Legally Responsible Official (LRO) and is responsible for certifying and entering all required information into the State Water Resources Control Board (SWRCB) California Integrated Water Quality System (CIWQS) Online SSO Reporting System for category 3 or 4 spills.
6.4.2 External SSO Reporting
CIWQS is used for reporting spill information to the SWRCB. The City reports all spills in accordance with State Water Resources Control Board Order No. 2022-0103 DWQ, Monitoring and Reporting Program, Statewide General Waste Discharge Requirements for Sanitary Sewer Systems.
6.5 SSO Notification
The City notifies the following internal personnel and outside agencies as appropriate:
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Table 6-1 – SSO Notification Contacts
All Category 1 SSO’s
City of Stockton, Municipal Utilities Dept.:
Technical Services Supervisor, Regulatory
Compliance Officer, Deputy Director of
Collections, and Director
Delta Water Supply Project
(209) 937-8700
(209) 639-3972 (Senior) (209) 937-5633 (Office)
(209) 639-4241 (Operator) (209)768-8879 (CPO)
City of Stockton, City Manager’s Office:
Public Information Officer, Assistant to City
Manager and Deputy City Manager
(209) 937-8700
Cal OES (1,000 gallons or greater only) (800) 852-7550
Alameda County Water District (510) 656-3426 (M-F 8-4) Fax (510) 657-5944 (after hours) Fax
Alameda Co. Flood Control District, Zone 7 (925) 447-4517 Fax Contra Costa Water District (925) 688-8274 Fax
Santa Clara Valley Water District (408) 395-5550 Fax
San Joaquin Co. Flood Chanel Maint. Div. (209) 468-8457 Fax State Water Resources Control Board
Online SSO Reporting System (CIWQS)
http://ciwqs.waterboards.ca.gov
All Category 2 SSO’s
City of Stockton, Municipal Utilities Dept.:
Technical Services Supervisor, Regulatory
Compliance Officer, Deputy Director of
Collections, Assistant Director and Director
(209) 937-8700
City of Stockton, City Manager’s Office:
Public Information Officer
Assistant to City Manager
Deputy City Manager
(209) 937-8700
State Water Resources Control Board
Online SSO Reporting System (CIWQS)
http://ciwqs.waterboards.ca.gov
All Category 3 or 4 SSO’s
State Water Resources Control Board
Online SSO Reporting System (CIWQS)
http://ciwqs.waterboards.ca.gov
All SSO Discharges to San Joaquin County Stormwater Collection System San Joaquin County Public Works (866) 755-4955
All SSO Discharges to Reclamation District 1614 Stormwater Collection System Reclamation District 1614 (209) 462-8061 / (209) 992-2827 Max Gallegos (209) 469-3133 Message
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6.6 SSO Response Training
This section provides information on the training that is required to support the SERP.
6.6.1 City Personnel
Training in SSO procedures are conducted on an annual basis for all Collections and Environmental Control staff. Training records are maintained with the OSHA Compliance Specialist and as part of the employees’ training record.
6.6.2 Non-City Personnel
The City requires contractors working on the collection system to be properly trained with SSO procedures and all contractors are made aware of the City’s Spill Emergency Response Plan (SERP) documents and procedures. All contractors are given a copy of the SSOERP prior to the start of work.
6.7 Supporting Documents
Appendix 4: City of Stockton Sanitary Sewer Overflow Emergency Response Plan (SSOERP)
City of Stockton Sanitary Sewer Overflow Standard Operating Procedure (SOP)
Appendix 9: Traffic Control and Flagging Safety Program MUTCD guidelines and procedures are available online
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City of Stockton – Municipal Utilities Department Chapter 7 Sewer System Management Plan Sewer Pipe Blockage Control Program July 2025 34
7 Chapter 7 – Sewer Pipe Blockage Control Program
This section of the SSMP presents the City’s Sewer Pipe Blockage control program to reduce the amount of fats, oils, and grease (FOG) discharged into the sanitary sewer system.
7.1 Regulatory Requirements
The Statewide General WDR for Wastewater Collection Agencies (Order No. 2022- 0103) requires the development of a sewer pipe blockage control program to reduce the amount of FOG discharged to the sanitary sewer system. The requirement in the WDR section D.7 is as follows:
Sewer Pipe Blockage Control Program: Each Enrollee shall evaluate its service area to determine whether a sewer pipe blockage control program is needed. If an Enrollee determines that a sewer pipe blockage control program is not needed, the Enrollee must provide justification for why it is not needed. If FOG is found to be a problem, the Enrollee must prepare and implement a sewer pipe blockage control program to reduce the amount of these substances discharged to the sanitary sewer system.
This plan shall include the following as appropriate:
(a) An implementation plan and schedule for public education outreach program that promotes proper disposal of pipe-blocking substances. (b) A plan and schedule for the disposal of pipe-blocking substances generated within the sanitary sewer system service area.
(c) The legal authority to prohibit discharges to the system and identify measures to prevent SSO and blockages caused by pipe-blocking substances. (d) Requirements to install grease removal devices, design standards, maintenance requirements, BMP requirements, record keeping and reporting requirements.
(e) Authority to inspect grease producing facilities, enforcement authorities and whether the Enrollee has sufficient staff to inspect and enforce the FOG ordinance.
(f) An Identification of sanitary sewer sections subject to FOG blockages and establishment of a cleaning maintenance schedule for each section; and (g) Development and implementation of source control measures for all sources of FOG discharged to the sanitary system for sections identified.
7.2 Sewer Pipe Blockage Control Action Plan
The City has developed a comprehensive program to address sanitary sewer overflows associated with fats, oils, and grease (FOG). This Sewer Pipe Blockage EXHIBIT 1
City of Stockton – Municipal Utilities Department Chapter 7 Sewer System Management Plan Sewer Pipe Blockage Control Program July 2025 35
Control Action Plan (FCAP) outlines the elements of the City's Sewer Pipe Blockage Control Program. The program consists of inspections, enforcement procedures, public education and public outreach to all Food Service Establishments (FSEs) in the City's regional sewer service area. The Sewer Pipe Blockage Control Program is operated by the Pretreatment section of the Municipal Utilities Department. The program is implemented by the Technical Services Supervisor (FOG Program Manager) and consists of full-time Environmental Control Officers (FOG Inspectors).
More than 700 FSEs are inspected annually under this program.
The FCAP is included as Appendix 10 of this SSMP document. All information about the City’s Sewer Pipe Blockage program can be found on its website:
www.stocktongov.com.
7.3 Public Outreach
MUD currently conducts public outreach by both providing information on the City’s website and distributing best management practices (BMP) fact sheets during restaurant inspections.
Collection System Operators and Environmental Control (EC) Officers also distribute a Sewer Pipe Blockage Brochure to residences and businesses on an 'as needed basis'.
7.4 Sewer Pipe Blockage Disposal
The City of Stockton currently handles disposal of pipe-blocking substances at the Regional Wastewater Control Facility located at 2500 Navy Drive, Stockton, CA 95206.
7.5 Sewer Pipe Blockage Program Legal Authority
The City of Stockton has had an ordinance in place prohibiting the discharge of “substances which may cause obstruction to the flow in a sewer.” The City of Stockton Municipal Code Title 13, Chapter 13.40, "Discharges of Fats, Oils and Grease from Food Service Establishments", contains all the provisions and legal authority pertaining to the prohibition to discharge of fats, oils and grease to the sanitary system. See Table 5-1 – Summary of Legal Authorities in this SSMP document. All Stockton Municipal Codes can be viewed and downloaded from the City’s website: www.stocktongov.com.
7.6 Grease Removal Device Design Standards and Requirements City of Stockton Municipal Code Title 13, Chapter 13.40 requires the installation of grease removal devices, provides minimum requirements for grease removal design standards, lists the required maintenance and record keeping associated with grease removal devices, and provides grease removal device BMPs. Reporting is conducted via on-site inspections conducted by MUD Environmental Control Officers.
EXHIBIT 1
City of Stockton – Municipal Utilities Department Chapter 7 Sewer System Management Plan Sewer Pipe Blockage Control Program July 2025 36
7.7 Sewer Pipe Blockage Program Enforcement
The City of Stockton, Municipal Utilities Department currenty employs multiple full- time Environmental Control Officers dedicated to the enforcement of the FOG Ordinance. Websoft is used to schedule and manage the city-wide pipe-blocking substance inspection activities. The authority to inspect and enforce the provisions of the FOG Ordinance are contained in Title 13, Chapter 13.40.140 – Facilities Monitoring and Right of Entry Requirements, and the enforcement actions are detailed in the City’s Sewer Pipe Blockage Enforecment Response Plan incuded in Appendix 11 of this SSMP document.
7.8 Sewer Pipe Blockage Related Preventative Maintenance MUD has established a collection system cleaning schedule for all sewer lines of 15- inches in diamter and smaller. The cleaning frequency is based on historical pipe information. Please reference Chapter 6: Element IV - Operation and Maintenance Program, Section b of the SSMP for further details regarding preventative maintence activities.
7.9 Source Control Measures
MUD’s existing source control program includes the requirement for grease interceptors for food service establishments, conducts FSE inspections, and engages in public outreach for both food service establishments and residences.
MUD also conducts apropriate enforcement when the source of a sewer blockage is identified as being pipe-blocking substance related.
7.10 Supporting Documents
Appendix 10: Sewer Pipe Blockage Control Action Plan
Appendix 11: Sewer Pipe Blockage Enforcement Response Plan Restaurant BMP Brochures
Restaurant BMP Posters
FOG brochure distributed by EC Officer and Collections Title 13, Chapter 13.40 - Discharges of Fats, Oils and Grease from Food Service Establishments
EXHIBIT 1
City of Stockton – Municipal Utilities Department Chapter 8 Sewer System Management Plan
System Evaluation. & Capacity
Assurance and Capital Improvements
July 2025 37
8 Chapter 8 – System Evaluation, Capacity Assurance and Capital Improvements
This chapter of the SSMP documents the City’s system evaluation and capacity assurance provisions. The City has not incurred a capacity related SSO since the California Integrated Water Quality System (CIWQS) began tracking SSO data in 2007.
As required by the WDR section D.8, the City shall prepare and implement a capital improvement plan (CIP) that will provide hydraulic capacity of key sewer system elements for dry weather peak flow conditions, as well as the appropriate design storm or wet weather event. The plan must include procedures and activities for:
(a) Routine evaluation and assessment of system conditions; (b) Capacity assessment and design Criteria;
(c) Prioritization of corrective actions; and
(d) A capital improvement plan.
8.1 System Evaluation and Condition Assessment
The City has undertaken the following system evaluation actions and processes:
8.1.1 Wastewater Master Plan
The collection system evaluation is undertaken as a part of the 2035 Wastewater Master Plan (Master Plan) development and subsequent CIP decisions. The Master Plan incorporates any capacity related projects that takes into account increases in flow and necessary system capacity increases due to projected population increases. The City has not experienced the projected population increase that was used to develop the Master Plan. Master Plan is available on the City’s website:
www.stocktongov.com.
8.1.2 Smart Covers
The City has also purchased and installed forty-one “Smart-Covers” which allow for real-time monitoring of flow conditions at specific maintenance holes (manholes).
Use of the “Smart-Covers” has prevented several SSO from occurring. These units can be re-located as needed to monitor suspected problem areas. In response to potential climate change driven condition changes, the City is aware of potential water table level and flooding concerns and in 2025 has strategically placed I&I monitoring capability within the “Smart-Cover” network.
EXHIBIT 1
City of Stockton – Municipal Utilities Department Chapter 8 Sewer System Management Plan
System Evaluation. & Capacity
Assurance and Capital Improvements
July 2025 38
8.1.3 CCTV Camera Inspection Program
The City’s preventative maintainance program includes routing CCTV camera inspections by both City staff and contractors. The annual inspection goal is 20 percent of total line mileage, with the intent of 100 percent of total line mileage within 5 years.
The City of Stockton operates wastewater collections systems adjacent to and through the Central Valley’s Delta region waterways. All collections systems are maintained, inspected and operated with concern for environmental consequences and discharges into a water of the State. Records and documentation of inspections are retained in accordance with PACP standards and used to evaluate areas requiring corrective action or more frequent inspections.
8.2 Capacity Assessment and Design Criteria
City of Stockton has Design and Construction Standard Specifications and Standard Drawings adopted by the City (latest revision November, 2003) as a guide for standardization of Public Works projects with in the City. Section 71 of the Standard Specifications and Standard Drawings pertain to the design and consutrction of sanitary sewers. These Standard Specifications and Standard Drawings are available on the City website: www.stocktongov.com.
The City’s preventative maintenance program records conditions found and/or corrected into the CMMS processes. Data derived from the CMMS, CCTV inspection program, exisiting system condition assessments, SSO history, and annual cross- divisional meetings with the Engineering division inform decisions and evaluations reguarding components or capacity limitations with regard to various conditions observed such as;
Dry-weather peak flow conditions that cause or contributes to spill events; Storm(s) or wet weather events that causes or contributes to spill events; The capacity of key system components; and
Identify the major sources that contribute to the peak flows associated with sewer spills.
Capacity of flood-prone systems subject to increased infiltration and inflow, under normal local and regional storm conditions;
Capacity of systems subject to increased infiltration and inflow due to larger and/or higher-intensity storm events as a result of climate change; Capacity of major system elements to accommodate dry weather peak flow conditions, and updated design storm and wet weather events; and EXHIBIT 1
City of Stockton – Municipal Utilities Department Chapter 8 Sewer System Management Plan
System Evaluation. & Capacity
Assurance and Capital Improvements
July 2025 39
8.3 Prioritization of Corrective Action
Data and historical observations from the capacity assessment data sources inform the City’s preventative maintenance and corrective action program to determine system components with failure potential for severe SSO consequences.
8.4 Capital Improvement Plan
The City’s current CIP proposal is outlined in a spreadsheet available from the Engineering Division of the Municipal Utilities Department. The CIP proposals for wastewater includes projects related to the collection system, pump stations and system upgrades, improvements and additions.
The list of the City’s active, approved wastewater collections CIP projects can be found in the City’s Five Year Capital Improvement Plan Utility section for Sanitary Sewer and Wastewater. The City’s CIP projects are developed and reviewed annualy, and executed through a joint coordination between Engineering, Maintenance and Operations staff in conjuction with consultants and contractors.
The CIP projects adopted were/are based in part on recommendations in the City of Stockton’s 2022 Wastewater Master Plan. The 2022 Wastewater Master Plan was developed taking into account present population size, current infrastructure and treatment plant capacity; and looking at projected growth in the next 25 years (2035 build-out). Existing systems were evaluated against design and performance criteria, using hydraulic modeling to predict where infrastructure improvements, upgrades or additions would be required. Capital costs were estimated and a phased program for capital projects scheduling proposed.
Additionally, some minor, short term, CIP is scheduled and completed on an as- needed basis. The short term CIP proejcts are typically unexpected emergency related projects.
8.5 CIP Schedule
The CIP schedule is subject to appropriation and reprioritization of internal and external funds authorized by the City Council and reviewed annually during budget preparations. Progress of each CIP, once started, is tracked by the Engineering Division in the CIP Budget spreadsheet.
Short term CIP work is added into the Cityworks Computerized Maintenance Management System after completion of the work.
8.6 Supporting Documents
2035 Wastewater Master Plan
City of Stockton Standard Specifications and Standard CIP Budget (Engineering Division CIP spreadsheet)
EXHIBIT 1
City of Stockton – Municipal Utilities Department Chapter 9 Sewer System Management Plan
Monitoring, Measurement and
Program Modifications
July 2025 40
9 Chapter 9 – Monitoring, Measurement and Program
Modifications
This chapter of the SSMP presents the City’s approach to Monitoring, Measurement, and Program Modifications.
The WDR section D.9 requirements for the Monitoring, Measurement, and Program Modifications of the SSMP are that the City shall:
(a) Maintain relevant information that can be used to establish and prioritize appropriate SSMP activities;
(b) Monitor the implementation and, where appropriate, measure the effectiveness of each element of the SSMP.
(c) Assess the success of the preventative operation and maintenance program. (d) Update program elements, as appropriate, based on monitoring or performance evaluations.
(e) Identify and illustrate SSO trends, including: frequency, location, and volume
9.1 Performance Measures
Cityworks serves as the CMMS used by the City to generate work orders, track in progress and completed work on cleaning, repair, CCTV inspection, customer service requests and SSOs information. This collection system information is tied to the collection system asset or residence and is used to determine changes to the sewer main cleaning frequency. The City uses the information to monitor and measure the performance of the SSMP and SSMP implementation.
The City monitors sewer overflow performance to accomplish the following:
Establish and prioritize appropriate SSMP activities
Monitor the implementation and effectiveness of the SSMP Assess the success of the preventative maintenance program Identify and illustrate SSO trends including frequency, volume, and location In addition to the usage of California Integrated Water Quality System (CIWQS) to obtain SSO data, the City has the capability to transfer data from the Cityworks CMMS to a GIS format whereby spills can be graphically illustrated as an overlay on digital maps. The information can be coded by color, shape or symbol and size to illustrate the desired SSO data. A sample of this can be seen in Appendix 12.
EXHIBIT 1
City of Stockton – Municipal Utilities Department Chapter 9 Sewer System Management Plan
Monitoring, Measurement and
Program Modifications
July 2025 41
9.2 Performance Monitoring and Program Changes
Monthly status reports and figures are generated from Cityworks CMMS data to provide monitoring of collection system activities. Activities such as cleaning, CCTV inspection, repairs, SSOs, and FOG inspection information are included in the report.
The City will evaluate the performance of its wastewater collection system at least annually using the performance measures identified in Table 9-1. The City will update the data and analysis of performance measures at the time of the evaluation. The City may use other performance measures in its evaluation.
EXHIBIT 1
City of Stockton – Municipal Utilities Department Chapter 9 Sewer System Management Plan
Monitoring, Measurement and
Program Modifications
July 2025 42
Table 9-1: Performance Metrics
Type Performance Measure Source
System Statistics Total Miles of Gravity Sewer GIS
Total Miles of Force Main GIS
Total Number of Pump Stations GIS
SSO Measures SSO Category CIWQS
SSO Date CIWQS
SSO Cause CIWQS
SSO Line Type CIWQS
Number of SSOs per 100 miles of
sewer per year
CIWQS
SSO Location CIWQS
SSO Volume CIWQS
SSOs that reach surface water CIWQS
Maintenance Program Count of Lateral Repairs CMMS
Linear Feet of Lateral Repairs CMMS
Count of Main Repairs CMMS
Linear Feet of Main Repairs CMMS
Count of Manholes Repaired CMMS
Count of Taps Repaired CMMS
Count of Mains Hydro-flushed CMMS
Linear Feet of Mains Hydro-flushed CMMS
Count of Mains Rodded CMMS
Linear Feet of Mains Rodded CMMS
Laterals Foamed CMMS
Linear Feet of Laterals Foamed CMMS
Count of Service Calls CMMS
Count of Mains Inspected POSM
Linear Feet of Mains Inspected POSM
Count of Laterals Inspected CMMS
Linear Feet of Laterals Inspected CMMS
Count of Pump Station Mechanical
Work Orders
CMMS
Count of Pump Station Electrical
Work Orders
CMMS
FOG Program Count of Initial FSE Inspections SwiftComply Count of Enforcement Actions SwiftComply
Count of Follow-Up Inspections SwiftComply
EXHIBIT 1
City of Stockton – Municipal Utilities Department Chapter 9 Sewer System Management Plan
Monitoring, Measurement and
Program Modifications
July 2025 43
9.3 SSMP Updates
All program elements are reviewed during an annual meeting with collection system Supervisors and engineering staff to determine if any updates to the SSMP are warranted. During the meeting, the annual report is used to evaluate the collection system activities to identify areas of process improvement. Any changes to the SSMP are documented in the Updates Log and implemented. SSMP updates are submitted to the State database when recertification is required. The SSMP Update Log is provided in Table 9-2 below.
Table 9-2: SSMP Update Log
Element Date
Entire SSMP November 2007
Entire SSMP February 2011
VI – Overflow Emergency
Response Plan
September 2013
I – Goals October 2013
II – Organization October 2013
VII – Fats, Oils, and Grease
(FOG) Program
October 2013
III – Legal Authority December 2013
IX – Monitoring and Program
Modifications
December 2013
X – SSMP Program Audits December 2013
Entire SSMP January 2016
IV - Organization November 2023
Entire SSMP Update July 2025
9.4 Supporting Documents
Appendix 6: Cityworks work order
Appendix 12: GIS SSO Display Sample
City of Stockton Sewer System Management Plan
Monthly Collection System Status Report
SSMP Update Log
EXHIBIT 1
City of Stockton – Municipal Utilities Department Chapter 10 Sewer System Management Plan Internal Audits
July 2025 44
10 Chapter 10 – Internal Audits
This chapter of the SSMP presents the process the City will follow to audit its SSMP and related programs.
The Enrollee shall submit its Sewer System Management Plan Audit and other pertinent audit information, in accordance with section 5.4 (Sewer System Management Plan Audits) of this General Order, to the online CIWQS Sanitary Sewer System Database by six (6) months after the end of the 3-year audit period. The Enrollee shall submit its Sewer System Management Plan Audit and other pertinent audit information, in accordance with section 5.4 (Sewer System Management Plan Audits) of this General Order, to the online CIWQS Sanitary Sewer System Database by six (6) months after the end of the 3-year audit period.
10.1 SSMP Audits
The City of Stockton’s assigned auditor, or the contracted 3 rd party auditor, shall select the format of the audit forms they deem appropriate as desired to assist in completing the SSMP audit. At a minimum, the City will conduct an SSMP audit on a triannual basis and all audit reports will be maintained on file.
Table 10-1: SSMP Audit Log
Audit Date Auditor Comments
October 2013 MUD Staff Complete, Audit on File
November 2015 HDR Engineering Complete, Audit on File
November 2017 MUD Staff Complete, Audit on File
November 2019 MUD Staff Complete, Audit on File
November 2023 EEC Environmental Complete, Audit on File
10.2 Supporting Documents
SSMP Audit Log
EXHIBIT 1
City of Stockton – Municipal Utilities Department Chapter 11 Sewer System Management Plan Communication Program
July 2025 45
11 Chapter 11 – Communication Program
This section of the SSMP is intended to outline the process involved in communicating with interested members of the public and satellite agencies regarding the development, implementation, and performance of this plan.
11.1 Regulatory Requirements
The WDR section D.11 states that:
The Enrollee shall communicate with:
The public for spills and discharges resulting in closures of public areas, or that enter a source of drinking water, and; The development, implementation, and update of this Plan including opportunities for public input to Plan implementation and updates.
Owners/operators of systems that connect into the Enrollee’s system, including satellite systems for system operation, maintenance, and capital improvement related activities.
11.2 Communication with Public
The City has multiple outlets to keep the public informed about its activities and plans.
11.2.1 Website Announcements
The City maintains a website (www.stocktongov.com) to inform the public about City activities. The City’s website is an effective communication channel for providing alerts and news to the public. The main page of the website provides important announcements, with links to agendas and minutes for City Council meetings, and other key information for City residents. Various documents are published on the City’s Municipal Utilities Department website:
11.2.2 Reports
Municipal Utilities Department (MUD) produces a monthly report and annual report and puts a PDF copy on the City website. This document highlights operational and maintenance activities including a summary of SSOs, and capital improvement project progress.
11.2.3 Sewer System Master Plan
The City’s website also includes links to the Sewer System Management Plan and the 2035 Wastewater Master Plan.
EXHIBIT 1
City of Stockton – Municipal Utilities Department Chapter 11 Sewer System Management Plan Communication Program
July 2025 46
11.2.4 Public Input
The public also has the opportunity to comment and ask questions through the “Ask Stockton” button on the City’s homepage: www.stocktongov.com.
11.3 Satellite Agencies
The City Regulatory Compliance Officer and/or Senior Supervisor is in contact with representatives of each satellite agency when announcement or notifications are issued. Meetings with satellite agencies are held on an as-needed basis. The City has five (5) satellite systems that connect to City’s sewers:
1. Country Club Sanitary Maintenance District
4330 N. Pershing Ave, Suite B-1
Ms. Ginger Root, Clerk of the Board
(209) 956-3516 e-mail: [email protected]
2. San Joaquin County Utility Maintenance Division
(various Maintenance Districts, including Lincoln Village, Colonial Heights, County Hospital)
San Joaquin County, Public Works Department
Sanitary Sewer System Operation and Maintenance
Ben Guzman, Water Superintendent
(209) 468-3090 e-mail: [email protected]
3. Port of Stockton
West Complex, Rough and Ready Island
2201 W. Washington St
Rita Koehnen
(209) 946-0246 ext 291 e-mail: [email protected]
4. Northern California Youth Correctional Center
7650 South Newcastle Rd
CLOSED
5. California Health Care Facility
7707 Austin Rd
Philip Albee, Correctional Plant Manager II
(209) 831-0726 e-mail: [email protected]
EXHIBIT 1