Waste Discharge ID: 5SSO10993
Sewer System Management Plan
September 2025 / FINAL
SEWER SYSTEM MANAGEMENT PLAN
SEPTEMBER 2025 / FINAL / CAROLLO
CITY OF MANTECA
WASTE DISCHARGE ID: 5SSO10993 i
pw://Carollo/CA/Manteca/201661-100000/04 Design/02 Deliverables/01 Reports/SSMP/Ch00.docx Overview
This Sewer System Management Plan (SSMP) has been prepared for the City of Manteca (City) with technical assistance from Carollo Engineers for meeting and exceeding compliance with the State Water Resources Control Board 2022 General Waste Discharge Requirements, Order WQ 2022-0103-DWQ for Sanitary Sewer Systems.1 The City provided all the details, information and institutional insights for preparing this SSMP. The document has been developed to meet the regulatory requirements, serving as a “living document” used as a tool for managing and operating the City’s sanitary sewer collection system.
Additionally, the latest 2024 Sewer System Management Plan Guidance Manual2 published by Bay Area Clean Water Agencies was utilized as a model for development of the document to harmonize formatting/content and incorporate recommended suggested guidance wherever possible.
The City has a proactive approach to the operations and management of the collection system. The following tables provide key City spill matrices for the past 10 years comparing the City’s spill record with state and regional system data. The City has a proven track record of outperforming the state and regional averages.
Spill Rate Indices (spills/100 miles/year)
Category 1 Category 2 Category 3
Main System Laterals Other Main System Other Main System Other City 0.1 0.0 0.0 0.13 0.02 1.12 0.0
State Municipal Average 1.51 2.95 0.49 0.70 0.81 2.51 0.48 Region 5 Municipal Average 1.76 1.12 1.36 1.12 1.82 3.38 0.61 Notes:
(1) Source: Sanitary Sewer System Spill Report, Operational Performance data for January 1, 2015, through December 31, 2024.
Net Volume Spills Indices (gallons/1,000 capita/year)
Category 1 Category 2 Category 3
Main System Laterals Other Main System Other Main System Other City 459.69 0.0 0.0 0.08 0.0 0.54 0.0
State Municipal Average 2,016.38 44.53 6,354.46 259.36 6,678.38 34.53 13.51 Region 5 Municipal Average 3,252.98 107.48 33,608.23 794.52 18,107.18 56.48 11.16 Notes:
(1) Source: Sanitary Sewer System Spill Report, Operational Performance data for January 1, 2015, through December 31, 2024.
1 2022 General Waste Discharge Requirements, Order WQ 2022-0103-DWQ for Sanitary Sewer Systems 2 2024 Sewer System Management Plan Guidance Manual
SEWER SYSTEM MANAGEMENT PLAN
SEPTEMBER 2025 / FINAL / CAROLLO
CITY OF MANTECA
WASTE DISCHARGE ID: 5SSO10993 ii
Contents
CHAPTER 1 INTRODUCTION
1.1 Regulatory Context 1-1
1.2 Update Schedule 1-2
1.3 Sewer System Asset Overview 1-2
1.4 Allocation of Resources 1-5
1.5 Enforcement Provisions 1-6
1.6 Sewer System Management Plan Availability 1-6
CHAPTER 2 ORGANIZATION
2.1 Legally Responsible Official 2-1
2.2 Implementation Responsibilities 2-2
2.3 Organizational and Staffing Responsibilities 2-3
2.3.1 Governance 2-5
2.3.2 Public Works Department 2-5
2.3.3 Engineering Department 2-10
2.3.4 Other Departments and Divisions 2-11
2.4 Lines of Authority 2-12
2.5 Chains of Communication for Reporting Spills 2-13
CHAPTER 3 LEGAL AUTHORITY
3.1 Illicit Discharges 3-1
3.2 Design and Construction Requirements 3-2
3.3 Maintenance, Inspection, and Repair Access 3-2
3.4 Enforcing Violations 3-2
3.5 Service Agreements 3-2
3.6 Storm Drain Coordination 3-3
CHAPTER 4 OPERATION AND MAINTENANCE PROGRAM
4.1 Sanitary Sewer System Mapping 4-1
4.1.1 Geographic Information System 4-2
4.1.2 Record Drawing Database 4-2
4.1.3 Survey Datums 4-2
4.1.4 Regulatory Mapping Requirements 4-2
4.2 Preventive Maintenance Program 4-3
4.2.1 Work Order Systems 4-3
4.2.2 Scheduling of Work 4-3
4.2.3 Pipeline Maintenance and Inspection 4-3
4.2.4 Lift Station Maintenance and Inspection 4-4
4.2.5 Manhole Maintenance and Inspection 4-4
4.2.6 Air Release Valve Inspection and Maintenance 4-4
4.2.7 Easement Maintenance Program 4-5
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4.2.8 Pretreatment Inspection and Maintenance 4-5
4.3 Training Program 4-5
4.3.1 Certification and Licensing 4-5
4.3.2 Spill Emergency Response Plan Training 4-6
4.3.3 California Integrated Water Quality System Training 4-6
4.4 Equipment and Replacement Part Inventories 4-7
CHAPTER 5 DESIGN AND PERFORMANCE PROVISION
5.1 Design Criteria 5-1
5.2 Construction Standards and Specifications 5-2
5.3 Inspection and Testing 5-2
CHAPTER 6 SPILL EMERGENCY RESPONSE PLAN
6.1 Spill Emergency Response Plan Training 6-2
6.2 Post-Spill Assessment and Documentation 6-2
6.3 Spill Emergency Response Plan Update 6-2
CHAPTER 7 SEWER PIPE BLOCKAGE CONTROL PROGRAM
7.1 Legal Authority 7-1
7.2 Source Control 7-2
7.3 Disposal Facilities 7-3
7.4 Public Education and Outreach 7-3
7.5 Identification and Maintenance of Problem Areas 7-3 CHAPTER 8 SYSTEM EVALUATION, CAPACITY ASSURANCE, AND CAPITAL
IMPROVEMENTS
8.1 System Evaluation and Condition Assessment 8-2
8.1.1 Inspection 8-2
8.1.2 Condition Assessment 8-3
8.2 Capacity Assessment and Design Criteria 8-3
8.2.1 Flow Monitoring Program 8-3
8.2.2 Capacity Analysis 8-4
8.2.3 Design Criteria 8-4
8.3 Project Prioritization 8-4
8.4 Capital Improvement Plan 8-4
CHAPTER 9 MONITORING, MEASURING, AND PROGRAM MODIFICATIONS
9.1 Monitoring and Maintaining Information 9-1
9.2 Program Measurements 9-1
9.3 Modifications Program 9-2
9.4 Updating the Sewer System Management Plan 9-2
CHAPTER 10 INTERNAL AUDIT
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10.1 Schedule 10-1
10.2 Responsible Parties for Program Audit 10-1
10.3 Program Audit Report 10-2
CHAPTER 11 COMMUNICATION PROGRAM
11.1 Public Outreach 11-1
11.2 Closure Alerts 11-1
11.2.1 Public Participation 11-1
Appendices
APPENDIX A CONTACT INFORMATION
APPENDIX B SPILL EMERGENCY RESPONSE PLAN
APPENDIX C SERVICE AGREEMENTS
APPENDIX D LIFT STATION INSPECTION CHECKLIST
APPENDIX E FATS, OILS, AND GREASE BOOK FOR FOOD SERVICE ESTABLISHMENTS
APPENDIX F ACCEPTABLE DISPOSAL FACILITIES
APPENDIX G SAMPLE FOG EDUCATIONAL MATERIALS
APPENDIX H COLLECTION SYSTEM PERFORMANCE
APPENDIX I CHANGE LOG
Tables
Spill Rate Indices (spills/100 miles/year) i
Net Volume Spills Indices (gallons/1,000 capita/year) i Table 1.1 Implementation Schedule 1-2
Table 1.2 Lift Station Summary 1-3
Table 1.3 Customer Connections Classification 1-5
Table 2.1 Implementation Responsibilities 2-2
Table 2.2 Key City Phone Numbers for Spill Reporting 2-13 Figures
Figure 1.1 Service Area 1-4
Figure 2.1 City Organizational Chart 2-4
Figure 2.2 Public Works Department – Wastewater Division Organizational Chart 2-7 Figure 2.3 Spill Notification, Response, and Reporting 2-13
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WASTE DISCHARGE ID: 5SSO10993 vi
Abbreviations
ARV air release valve
BMP best management practice
CCTV closed-circuit television
CIP Capital Improvement Plan
City City of Manteca
CIWQS California Integrated Water Quality System
CMMS computerized maintenance management system
CWA Clean Water Act
CWEA California Water Environment Association
d/D maximum flow depth versus full flow depth
FE Fundamentals of Engineering
FOG fats, oils, and grease
FSE food service establishment
General Order General Order No. 2022-0103-DWQ
GIS geographic information system
gpm gallons per minute
I/I inflow and infiltration
LRO Legally Responsible Official
Municipal Code Manteca Municipal Code
NPDES National Pollutant Discharge Elimination System
O&M operation and maintenance
OSHA Occupational Safety and Health Administration
PACP Pipeline Assessment Certification Program
PE Professional Engineer
PWWF peak wet weather flow
Rate Study Cost of Service Sewer Rate Study
Regional Water Board Regional Water Quality Control Board SERP Spill Emergency Response Plan
SSMP Sewer System Management Plan
Stantec Stantec Consulting Services, Inc.
State Water Board State Water Resources Control Board
WQCF Wastewater Quality Control Facility
SEWER SYSTEM MANAGEMENT PLAN
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WASTE DISCHARGE ID: 5SSO10993 1-1
CHAPTER 1 INTRODUCTION
The General Order WQ 2022-0103-DWQ (General Order) specifies the following requirements with respect to the Introduction element of the Sewer System Management Plan (SSMP):
The goal of the SSMP is to provide a plan and schedule to: (1) properly manage, operate, and maintain all parts of the Enrollee's sanitary sewer system(s), (2) reduce and prevent spills, and (3) contain and mitigate spills that do occur.
The SSMP must include a narrative Introduction section that discusses the following items:
Regulatory Context. The SSMP Introduction section must provide a general description of the local sewer system management program and discuss SSMP implementation and updates.
Update Schedule. The SSMP Introduction section must include a schedule for the Enrollee to update the SSMP, including the schedule for conducting internal audits. The schedule must include milestones for incorporation of activities addressing prevention of sewer spills.
Sewer System Asset Overview. The SSMP Introduction section must provide a description of the Enrollee-owned assets and service area, including but not limited to:
Location, including county(ies).
Service area boundary.
Population and community served.
System size, including total length in miles, length of gravity mainlines, length of pressurized (force) mains, and number of pump stations and siphons.
Structures diverting stormwater to the sewer system.
Data management systems.
Sewer system ownership and operation responsibilities between Enrollee and private entities for upper and lower sewer laterals.
Estimated number or percent of residential, commercial, and industrial service connections. Unique service boundary conditions and challenge(s).
The SSMP Introduction section must provide reference to the Enrollee's up to-date map of its sanitary sewer system.
1.1 Regulatory Context
The regulatory requirements for sanitary sewer systems in California, particularly for entities like the City of Manteca (City), are primarily governed by the State Water Resources Control Board (State Water Board) and the Regional Water Quality Control Board (Regional Water Board), under the authority of the federal Clean Water Act (CWA) and the California Water Code.
The overarching regulatory framework is the Statewide General Waste Discharge Requirements for Sanitary Sewer Systems, specifically the General Order, which became effective on June 5, 2023, and
SEWER SYSTEM MANAGEMENT PLAN
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CITY OF MANTECA
WASTE DISCHARGE ID: 5SSO10993 1-2
superseded the previous Order 2006-0003-DWQ and its amendments. These requirements apply to publicly-owned sanitary sewer systems greater than 1 mile in length, and in some cases, to smaller or privately-owned systems if mandated by the Water Boards due to spill history or other factors.
The General Order introduces four distinct spill categories based on spill volume and whether the discharge reaches surface waters. The General Order also clarifies that exfiltration of sewage is not considered a spill if it remains in the subsurface and does not reach waters of the State.
1.2 Update Schedule
The City uses the State Water Board’s online lookup tool to ensure all required due dates for updating its SSMP and completing its required SSMP audits. Table 1.1 summarizes the City’s upcoming implementation schedule.
Table 1.1 Implementation Schedule
Task Frequency Due Date Begin Task
Sanitary Sewer System Service Area Boundary Map(1) Once December 31, 2025 December 1, 2025 Category 4 and Non-Category 1 Lateral Spills Annual February 1 January 1 SERP Review and Update Annual April 1 February 1
Annual Report Annual April 1 February 1
Next SSMP Audit(2) Every 3 years February 2, 2028 October 1, 2027 SSMP Audit(2) Every 3 years February 2, 2031 October 1, 2030 Next SSMP Update(3) Every 6 Years August 2, 2031 May 1, 2031 Notes:
SERP - Spill Emergency Response Plan
(1) Electronic Sanitary Sewer System Service Area Boundary Map Specifications: Link. (2) Per Section 5.4 and Attachment E1, Section 3.10 of the General Order, the Audit Report is due within six months after the end of the required three-year audit period.
(3) Per Section 5.5 and Attachment E1, Section 3.11 of the General Order, SSMP updates are due within six years after the required due date of the Enrollee’s last SSMP Update.
1.3 Sewer System Asset Overview
The City is in San Joaquin County and has a service area of approximately 21.5 square miles, serving a population of approximately 85,792 people (Source: 2021 United States Census). Figure 1.1 shows the City service area. The City’s Wastewater Quality Control Facility (WQCF) has a rated capacity of 9.87 million gallons per day and serves the City, City of Lathrop, and Raymus Village. The City’s sewer service area is contiguous with City limits and is divided into three sewer sheds—North, South, and Central Sheds. The North Shed contributes approximately 10 percent, the South Shed contributes approximately 30 percent, and the Central Shed contributes approximately 60 percent of the flow.
The existing sewer collection system consists of approximately 250 miles of 4-inch to 60-inch diameter gravity pipelines, approximately 22 miles of 3-inch to 24-inch diameter force mains. The City's geographic information system (GIS) database includes 18 private and 21 City-owned lift stations. A summary of the City’s major lift stations is summarized in Table 1.2. The City does not have any stormwater diversion structures that divert stormwater to the sanitary sewer system.
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Table 1.2 Lift Station Summary
Name of Lift Station No. of Pumps Design Capacity, gpm Design Head, feet Active Status Antigua 2 193 53 Inactive
Bella Vista 2 600 58 Inactive
Chadwick 2 875 24 Active
Curran Grove 2 140 18 Active
Eckerts Cold Storage 2 750 51 Active/Industrial Discharge Line Evans Estates 2 729 87.1 Active
Fishback 2 100 - 203 14 Active
Frito Lay 2 200 48 Inactive
Northgate Park 1 Small sump pump and septic tank Active Roberts Estates 2 200 13 Active
Shadowbrook 2 812 32.9 Active
Solera 2 220 66 Inactive
Tara Park 2 Temporary lift station Inactive
Union Road 3 7,000 x 2, 3,500 19 Active
Villa Ticino 2 510 23 Active
Woodbridge 2 1,450 50 Active
Woodward Park 2 590 38 Active
Notes:
gpm - gallons per minute
(1) Source: SSMP Audit 2023 and Master Plan 2024.
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SEWER SYSTEM MANAGEMENT PLAN
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Legend
Sanitary Sewer
C.■•■J Service Area
0 0.42
Miles
0,85
Dat.1 Source.s: City of Manteca GIS O.nabase.
Disclaimer: Features shown in this
figure are for planning purposes and
repreS£1nt appro>1imate locations.
Engineering and/or survey acc-uracy
is not implied.
5._ _____________ _,,_.__ _____________________ ...:_..a....!,_ ... ____ _;, ___________ -'-.... -..... ___ ..._=�-----.J Figure 1. 1 Service Area
CITY OF MANTECA
WASTE DISCHARGE ID: SSSO10993
SEWER SYSTEM MANAGEMENT PLAN
SEPTEMBER 2025 / FINAL / CAROLLO
CITY OF MANTECA
WASTE DISCHARGE ID: 5SSO10993 1-5
The customer connection classification is presented in Table 1.3 for residential, commercial, industrial, and institutional customers.
Table 1.3 Customer Connections Classification
Use Type Number of Connections
Residential 26,221
Commercial/Institutional 1,035
Industrial 51
1.4 Allocation of Resources
Section 5.7 of the General Order specifies the following requirements with the allocation of resources:
The Enrollee shall:
Establish and maintain a means to manage all necessary revenues and expenditures related to the sanitary sewer system; and
Allocate the necessary resources to its sewer system management program for:
a. Compliance with this General Order,
b. Full implementation of its updated Sewer System Management Plan, c. System operation, maintenance, and repair, and
d. Spill responses
The City maintains various revenue sources to maintain financial stability, meet its operational needs, and manage all necessary expenditures for its wastewater collection operation. The following summarizes the sources of revenue:
Sewer rates finance the construction, renewal, and replacement of system assets through user fees and other fees or charges.
Capacity charges on new connections finance capital improvements that will serve the growth of both existing and new customers.
In 2024, the City hired Stantec Consulting Services, Inc. (Stantec) to complete a Cost of Service Sewer Rate Study1 (Rate Study), dated January 10, 2025. At the time of the Rate Study the City’s sewer rates and capacity charges have not been increased since 2010. Since then, the City recently updated its Wastewater Master Plan,2 which was adopted by the City Council on March 5, 2024. As a result, the City needed to revisit the basis of the rates and charges to sewer customers to ensure they align with the full cost of providing service and are proportionately allocated between and within customer classes. Stantec was engaged to provide a cost-of-service analysis and recommend updated rates and charges, for which the results and findings are presented herein. The recommended sewer rates and capacity charges were adopted by City Council on May 15, 2025.
1 Cost of Service Sewer Rate Study. 2 Wastewater Master Plan.
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Chapter 11 of the City’s Wastewater Master Plan includes a Staffing Plan which estimated staffing requirements to operate the wastewater collection and treatment systems and to discuss the personnel qualifications, responsibilities, and certifications. The Wastewater Master Plan found that the Wastewater Collection Maintenance staff is understaffed and recommended that the City have 13 collection system maintenance employees to meet existing needs. The Collection Maintenance staff members are responsible for storm drain system maintenance. The City currently has nine collection system maintenance employees. However, the Collection Maintenance staff members employed have sufficient training to operate the necessary equipment to effectively maintain their wastewater collection system.
1.5 Enforcement Provisions
Section 6.1 of the General Order specifies the following requirements with the allocation of resources:
The following enforcement provisions are based on existing federal and state regulations, laws and policies, including the federal Clean Water Act, the state Water Code and the State Water Board Enforcement Policy.
The City is aware of the consequences for noncompliance including associated penalties for violations.
The City maintains a proactive stance with the full implementation of its SSMP.
Noncompliance with requirements of this General Order or discharging sewage without enrolling in this General Order constitutes a violation of the Water Code and a potential violation of the CWA and is grounds for an enforcement action by the State Water Board or the applicable Regional Water Board.
Failure to comply with the notification, monitoring, inspection, entry, reporting, and recordkeeping requirements may subject the Enrollee to administrative civil liabilities of up to $10,000 a day per violation pursuant to Water Code section 13385; up to $1,000 a day per violation pursuant to Water Code section 13268; or referral to the Attorney General for judicial civil enforcement. Discharging waste not in compliance with the requirements of this General Order or the CWA may subject the Enrollee to administrative civil liabilities up to $10,000 a day per violation and additional liability up to $10 per gallon of discharge not cleaned up after the first 1,000 gallons of discharge; up to $5,000 a day per violation pursuant to Water Code section 13350 or up to $20 per gallon of waste discharged; or referral to the Attorney General for judicial civil enforcement.
1.6 Sewer System Management Plan Availability
Section 6.3 of the General Order specifies the following requirements as it relates to the availability of the SSMP:
The Enrollee’s updated Sewer System Management Plan must be maintained for public inspection at the Enrollee’s offices and facilities and must be available to the public through CIWQS and/or on the Enrollee’s website, in accordance with section 3.8 (Sewer System Management Plan Reporting Requirements) of Attachment E1 (Notification, Monitoring, Reporting and Recordkeeping Requirements) of this General Order.
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The City publishes its SSMP on their website3 and maintains a paper copy in its offices which can be made available for inspection during regular business hours. 3 City of Manteca Sewer System Management Plan.
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CHAPTER 2 ORGANIZATION
The General Order specifies the following requirements with respect to the Organization element of the SSMP:
The SSMP must identify organizational staffing responsible and integral for implementing the local SSMP through an organization chart or similar narrative documentation that includes:
The name of the Legally Responsible Official as required in Section 5.1 of the General Order. The position titles, telephone numbers, and email addresses for management, administrative, and maintenance positions responsible for implementing specific SSMP elements. Organizational lines of authority.
Chain of communication for reporting spills from receipt of complaint or other information, including the person responsible for reporting spills to the State and Regional Water Boards and other agencies, as applicable. For example, county health officer, county environmental health agency, and State Office of Emergency Services.
This chapter identifies the representative responsible from the City for the implementation of this SSMP. It also includes an organizational chart and a chain of communication for reporting spills.
2.1 Legally Responsible Official
Section 5.1 of the General Order requires that the City designates at least one Legally Responsible Official (LRO). The LRO should have knowledge and expertise of the enrolled sanitary sewer system and is authorized to serve as a duly authorized representative. The LRO must have responsibility over management of the entire sanitary sewer system and must be authorized to make managerial decisions that govern the operation of the sanitary sewer system, including having the explicit or implicit duty of making major capital improvement recommendations to ensure long-term environmental compliance.
The LRO must:
Possess a recognized degree or certificate related to operation and maintenance (O&M) of sanitary sewer systems.
Have professional training and experience related to the management of sanitary sewer systems, demonstrated through extensive knowledge, training, and experience.
The LRO is responsible for electronically certifying, on the City's behalf, all applications, reports, the SSMP and corresponding updates, and other information submitted electronically into the online California Integrated Water Quality System (CIWQS)1 Sanitary Sewer System Database. The Collections System Supervisor is the authorized representative, also known as the LRO, and is responsible for the execution of compliance actions required under the General Order.
1 California Integrated Water Quality Systems.
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The LRO may designate one or more individuals as a Data Submitter for reporting spill data. The LRO shall authorize the designation of Data Submitter(s) through the online CIWQS database. The LRO shall submit any changes to its Data Submitter(s), and/or change in Data Submitter contact information, to the State Water Board within 30 calendar days of the change, by emailing [email protected] and copying the appropriate Regional Water Board as provided in Attachment F of the General Order. If the LRO is unavailable, the City has established one Data Submitter to handle the duties of the authorized representative. The Data Submitter(s) includes the Lead Wastewater Maintenance Worker.
2.2 Implementation Responsibilities
Table 2.1 summarizes the position responsible for implementing specific SSMP elements.
Table 2.1 Implementation Responsibilities
SSMP Element Position Responsible
Introduction Collections System Supervisor
Regulatory Context WQCF Wastewater Operations Manager, Collections System Supervisor Update Schedule Collections System Supervisor
Sewer System Asset Overview Collections System Supervisor Organization Collections System Supervisor
Legal Authority Director of Public Works and City Council Maps of the Sanitary Sewer System Engineering Staff and the Department of Information Technology & Innovation
Preventive O&M Collections System Supervisor and Lead Wastewater System Worker Training Collections System Supervisor and Lead Wastewater Maintenance Worker Equipment Inventory Collection System Supervisor
Design Criteria and Construction
Standards
Director of Public Works and Deputy Director of Engineering Procedures and Standards Director of Public Works and Deputy Director of Engineering SERP Collections System Supervisor, Lead Wastewater Maintenance Worker, Maintenance Workers, Director of Engineering
Sewer Pipe Blockage Program Permit Compliance Coordinator System Evaluation and Condition
Assessment
Maintenance Planner
Capacity Assessment and Design Criteria Deputy Director of Engineering Prioritization of Corrective Action Collections System Supervisor and Wastewater Operations Manager CIP Director of Engineering
Monitoring, Measurement and Program
Modifications
Collections System Supervisor
Internal Audits Director of Engineering, Collections System Supervisor, and Environmental Compliance Inspector
Communication Program Environmental Compliance Inspector, Director of Public Works Notes:
CIP - Capital Improvement Plan
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2.3 Organizational and Staffing Responsibilities
The City’s organizational structure for the Wastewater Collection System staff is responsible for implementing and overseeing a majority of SSMP programs. The organization chart shown on Figure 2.1, shows the organizational structure and relations of the City’s administrative, management, and field positions. Additionally, the general responsibilities of the personnel are included in this section. To make the update of this document more user-friendly, the lines of authority on Figure 2.1 reference job titles only. Appendix A provides names and contact information for the individuals referenced in the organizational chart at the time of certification.
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Figure 2.1 City Organizational Chart
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2.3.1 Governance
This section summarizes the City’s elected governing body and appointed positions. These governing bodies are responsible for adopting legislation, setting policy, adjudicating issues, and establishing the budget of the City. The following describes these positions/roles in more detail. Mayor and City Council: The Mayor and City Council, as the City's governing body, oversees preventing and minimizing spills, protecting public health and safety, minimizing adverse impacts of spills, preventing adverse environmental impacts, ensuring timely corrective actions, and ensuring compliance with regulatory requirements.
City Attorney’s Office: The City Attorney’s Office reviews, monitors, and evaluates the conduct of the City activities for conformance with laws, regulations, policies, and rules. In addition, the City Attorney’s Office represents the City in state and federal civil litigation, provides legal advice to the City Council and the City’s departments, and ensures that violators of City laws are prosecuted. City Clerk: The Legislative Services/City Clerk Program administers democratic processes such as elections, access to city records, and all legislative actions ensuring transparency to the public, acts as a compliance officer for federal, state, and local statutes, including the Political Reform Act, the Brown Act, and the Public Records Act. The City Clerk manages public inquiries and relationships, and provides legislative, technical, and administrative support to the Mayor, City Council, Boards and Commissions, and City Manager.
City Manager’s Office: Working under the Council-Manager form of government, the City Manager supervises Department Heads and oversees all city operations, budgets, and policies. The City Manager’s Office provides information and recommendations to the City Council; implements the vision and policies of the City Council; directs the delivery of municipal services; and oversees the completion of the City Council Goals and Priorities, capital projects, legislative affairs, and community outreach and engagement.
2.3.2 Public Works Department
The Public Works Department is comprised of several different divisions: Facilities Maintenance, Fleet Maintenance, Parks/Urban Forest, Park Planning and Projects, Solid Waste, Streets, Storm, Transit, Wastewater, and Water. Each division strives to provide expert quality services to their customers and works proactively to respond to the needs and concerns of their community. The Wastewater Division within the Public Works Department oversees maintaining sewer infrastructure, under the General Order.
The following summarizes the Public Works Department leadership staff:
Public Works Director: Holds a pivotal role in ensuring proper functioning, regulatory enforcement, operational oversight, emergency management, and public communication to protect the City’s water quality and infrastructure.
Deputy Director of Public Works – Water Resources: Under the direction of the Public Works Director, ensures detailed implementation and technical compliance of the City's water management programs.
Administrative Assistant: Supports the daily operations, particularly by managing information flow and data entry for the maintenance and operations teams involved in the wastewater collection
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system. The Administrative Assistant at the City's WQCF primarily serves as a supportive role, managing administrative functions for the facility and collection system staff.
Figure 2.2 shows the Wastewater Division and Regulatory Division organization structure.
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Figure 2.2 Public Works Department – Wastewater Division Organizational Chart
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2.3.2.1 Wastewater Division
The following summarizes the Wastewater Division staff responsible for managing the collection system:
Wastewater Operations Manager: Under the direction of the Deputy Director of Public Works – Water Resources, plan, organize, and direct the operation, maintenance, and repair of the City’s wastewater and storm water collection and treatment systems, facilities, and supporting vehicles/equipment; coordinate and manage the development and implementation of Department guidelines and procedures to assure compliance with established local, state, and federal laws, codes, and regulations; and train and evaluate the performance of assigned personnel. Collections System Supervisor: Under the direction of the Wastewater Operations Manager, organize and direct the maintenance and repair activities of the wastewater treatment facility and/or wastewater and storm water conveyance systems; plan, organize, and direct assigned staff performing skilled work in the maintenance and repair of the sewer collection and storm water pumping systems; ensure that all work performed is done in compliance with proper procedures; provide adequate scheduling, supplies, and equipment to ensure smooth and efficient system operations; train assigned personnel; and oversee and ensure that the computerized maintenance management system (CMMS) is functioning properly and that all necessary records, readings, and reports are complete, organized, and up to date.
Lead Wastewater Maintenance Worker: Under the direction of the Collections System Supervisor, leads in a variety of skilled work in the installation, maintenance, and inspection of the City’s wastewater collection system assets. Responsible for inspecting and assessing pipelines using Pipeline Assessment Certification Program (PACP), operating light and heavy maintenance/construction equipment, and training/providing work directions to assigned staff. Wastewater Maintenance Worker III: Under the direction of the Collections System Supervisor, participates in a variety of skilled work in the installation, maintenance, and inspection of the City’s wastewater collection system assets. Responsible for inspecting and assessing pipelines conditions using PACP, operating light and heavy maintenance/construction equipment, and training/providing work directions to assigned staff.
Wastewater Maintenance Worker II: Under the direction of the Collections System Supervisor, performs in a variety of skilled work in the installation, maintenance, and inspection of the City’s wastewater collection system assets. Responsible for operating light and heavy maintenance/construction equipment to perform assigned duties. Wastewater Maintenance Worker I: Under the direction of the Collections System Supervisor, performs in a variety of skilled work in the installation, maintenance, and inspection of the City’s wastewater collection system assets. Responsible for operating light and heavy maintenance/construction equipment to perform assigned duties. Wastewater Maintenance Supervisor: Under the direction of the Wastewater Operations Manager, organize direct operations and activities related to the maintenance and repair of WQCF facilities and related equipment; provide adequate scheduling, supplies, and equipment to assure smooth and efficient system operations; and train and provide work direction to assigned personnel.
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Utilities Mechanic: Under the direction of the Wastewater Maintenance Supervisor, perform skilled work in the maintenance and repair of wastewater and storm water facilities. Troubleshoot and repair wastewater and storm water facilities, including motor, pumps, and blowers. Instrumentation/Electrician Technician: Under the direction of the Wastewater Maintenance Supervisor, performs skilled work in the maintenance, repair, and calibration of electrical systems, equipment, appurtenances, instrumentation, and controls related to the wastewater treatment facility and/or wastewater and storm water conveyance systems.
Maintenance Planner: Under general direction of the Wastewater Operations Manager, the Maintenance Planner is responsible for the effective planning, scheduling, and reporting of all maintenance activities at the WQCF and associated facilities.
2.3.2.2 Regulatory Division
The following summarizes the Regulatory Division staff responsible for assisting with the administration of the SSMP:
Water Resources Regulations Manager: Under general direction from the Deputy Director of Public Works – Water Resources, plans, organizes, directs, and supervises a comprehensive regulatory compliance program of the Regulatory Division within the Public Works Department, relating to environmental regulations and compliance; performs a variety of technical tasks relative to assigned area of responsibility in Water, Wastewater, and Stormwater. Permit Compliance Coordinator: Oversees the administration and enforcement of the City’s Fats, Oils, and Grease (FOG) Program, including managing permits, maintaining compliance records, coordinating with the State Water Board, and ensuring adherence to regulatory requirements. Senior Environmental Compliance Inspector: Under the direction of the Water Resources Regulations Manager, the Senior Environmental Compliance Inspector is responsible for scheduling and coordinating compliance with the reporting requirements of the City’s Sewer and Storm Water National Pollutant Discharge Elimination System (NPDES) permits and Industrial Waste Pretreatment Program. Performs inspections, sampling, monitoring, and enforcement activities related to compliance with NPDES permits and Industrial Waste Pretreatment Program which includes the Dental Amalgam Mercury Control Program and FOG Program. Exercises technical supervision over subordinate professional technical and clerical staff.
Environmental Compliance Inspector: Under coordinated supervision of the WQCF Laboratory and the Permit Compliance Coordinator. Performs inspections and sampling of industrial, commercial, and domestic wastewater services and ensures compliance with federal, state, and local regulations; performs laboratory analysis of water and wastewater; enforces cross connection control and grease interceptor and sand/oil trap inspection programs; performs other sampling, inspections, and tasks as required. Carries out field implementation of the FOG Program by conducting inspections, identifying noncompliance issues, working directly with municipal and industrial users, providing education on proper practices, and supporting enforcement actions to maintain system integrity. Laboratory Supervisor: Under the direction of the Water Resources Regulation Manager, organize and direct operations and activities related to the chemical, physical, and bacteriological laboratory analysis of process samples in wastewater to assure compliance with quality control and certification
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standards; oversee the development and implementation of laboratory goals, objectives, guidelines, and procedures; schedule, train, and evaluate the performance of assigned personnel. Lead Laboratory Technician: Under the direction of the Laboratory Supervisor, perform a variety of technical work related to the chemical, physical, and bacteriological laboratory analysis of process samples in wastewater, industrial pretreatment, and drinking water; evaluate and interpret effluent and data quality; prepare mandated and requested reports related to quality control and results of laboratory tests according to compliance and certification requirements. Laboratory Technician I-II: Under the direction of the Laboratory Supervisor, organize and direct operations and activities related to the chemical, physical and bacteriological laboratory analysis of process samples in wastewater to assure compliance with quality control and certification standards; oversee the development and implementation of laboratory goals, objectives, guidelines, and procedures; schedule, train, and evaluate the performance of assigned personnel.
2.3.3 Engineering Department
The Engineering Department oversees the planning, design, and construction of infrastructure projects related to traffic and transportation, water treatment and distribution, wastewater collection, treatment and disposal, and storm water drainage, control, and conveyance. It also administers the subdivision review process, participates in site plan review, manages capital improvement projects, and coordinates with other agencies on regional efforts and projects. The Department collaborates with the community, other City Departments, City Council, and the City Manager to engineer a better future for the City. The following Engineering Department positions serve a role in administering the SSMP:
Director of Engineering: Holds a senior leadership role overseeing the City’s sewer infrastructure planning and regulatory compliance. This position is responsible for reviewing and approving final design drawings for new development and redevelopment projects. The Director has authority to implement and enforce regulations related to sewer and stormwater discharges, approve temporary discharges when necessary, and evaluate compliance with local, state, and federal wastewater requirements. In emergencies, the Director may invoke powers to protect sewer infrastructure, staff, the environment, and the public, and serve as the sole City spokesperson for sanitary sewer spill incidents involving media. Additional responsibilities include authorizing operational rules for the receiving station, ruling on industrial waste ordinance appeals, and determining whether hazardous discharges must be reported to the publicly owned treatment works. Deputy Director (Infrastructure): Oversees the delivery of sewer infrastructure projects, supervises staff and consultants involved in sewer system improvements and rehabilitation, ensures compliance with City standards, and manages sewer-related capital improvement planning and execution. Deputy Director (Development): Manages the engineering review of sewer infrastructure associated with new developments, reviews subdivision and utility plans, ensures sewer designs meet City requirements, and coordinates with the Public Works Department to support responsible growth. Senior Engineer: Plays a vital role in the planning, design, and implementation of sewer infrastructure projects within the City. This position is responsible for managing public construction and installation efforts related to the wastewater collection system and overseeing project budgeting, contracting, bidding, and technical analysis. The Senior Engineer reviews and approves final design and submittal drawings for new developments and subdivisions, often working in coordination with the Public
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Works Director and Senior Engineering Technician. Additionally, the role includes providing technical guidance and direction to assigned staff and contributing to the long-term planning and maintenance of the City’s sewer infrastructure.
Assistant Engineer: Assists in the design and review of sewer improvement plans, supports CIP development and permitting processes, and coordinates with internal teams to ensure timely and accurate delivery of sewer-related engineering tasks
Engineering Technician: Supports sewer infrastructure projects by preparing plan sheets, performing drafting and data entry, assisting in field data collection and surveys, and helping engineering staff with sewer system documentation and plan checks.
2.3.4 Other Departments and Divisions
This section summarizes departments, divisions, and positions that play a role in the implementation of the City’s SSMP.
Development Services Department: This department is composed of the Building Safety, Planning, and Economic Development Divisions. The purpose of the Development Services Department is to ensure the orderly physical development of the community by upholding the goals and policies of the City’s General Plan through the issuance of land use entitlements and building permits for improvements and development of private property, the support of existing businesses, and attracting new development and investment into the community. Finance Department: The Finance Department provides strategic financial leadership and fiscal support to the City. This department is responsible for the City’s annual budget process, financial planning (including debt management, long-term financial planning, special tax and fee administration), the annual financial audit and Annual Comprehensive Financial Report, other financial reporting, general ledger accounting, accounts payable, accounts receivable/miscellaneous billing, revenue management (including business licensing and utility billing), cash receipts and deposits, and treasury management. General and ongoing departmental goals include develop and implement effective and efficient financial planning, reporting, and accounting systems; provide quality customer service to internal and external customers; safeguard the City’s fiscal resources; and foster a sense of trust and transparency with the community, the Council, and City Management. Risk Management Division, Human Resources Department: This division administers safety training and Occupational Safety and Health Administration (OSHA) mandated programs, as well as responds to community and employee safety concerns.
Department of Information Technology & Innovation: The Information Technology & Innovation Department plays a vital role in supporting the implementation of the City’s SSMP by providing the technological infrastructure and services necessary for efficient operations and regulatory compliance.
The department ensures reliable network connectivity, data security through server and backup support, and technical assistance via helpdesk and desktop support. It maintains essential applications and databases used for asset management, work orders, and reporting, while also managing telecommunications to facilitate communication among field and office staff. The GIS team supports spatial data needs, enabling accurate mapping and tracking of sewer assets. Additionally, the department helps automate processes, improve mobile computing for field crews, enhance public access to SSMP-related information through the City’s website, and promote regional data sharing
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with other agencies. Through these efforts, the department contributes to increased productivity, transparency, and effective SSMP execution across all involved departments. Fire Department: The Fire Department is responsible for protecting the lives and property of the citizens of Manteca. The Fire Department’s dispatchers may assist in the notification of a spill event. In addition, the Fire Department may assist the spill response team in traffic control. Police Department: The Police Department serves the community while protecting the rights of all people. The Police Department’s dispatchers may assist in the notification of a spill event. In addition, the Police Department may assist the spill response team in traffic control.
2.4 Lines of Authority
The City organizational staffing structure for spill response, reporting, and certification including lines of authority is presented in Figure 1 of the SERP, which is included in Appendix B of this SSMP. Figure 2.3 provides a simplified flowchart. This flowchart outlines the City's procedures for responding to a spill, detailing actions from initial notification through cleanup and reporting. It first differentiates between spills originating from City-owned sewer or private sewer, leading to distinct response paths depending on whether the overflow is contained or enters receiving water. Key steps involve containment, correcting the cause, and notifying relevant parties, including the public and regulatory agencies, especially if there's a potential health hazard. The document also categorizes spills based on volume and impact, specifying additional reporting requirements like technical reports and water quality monitoring for more severe incidents.
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Figure 2.3 Spill Notification, Response, and Reporting
2.5 Chains of Communication for Reporting Spills
The City’s chain of communication for reporting spills is summarized in Figure 1 of the SERP, which is included in Appendix B of this SSMP. When a sewer spill is reported, the City initiates its established communication chain to notify staff and the public. Crews respond by investigating the site, setting up perimeters, signage, and traffic control if needed. The spill is then contained using methods such as rubber mats, sandbags, trenches, or plugs. The source is identified and corrected, whether due to blockages, pipe failures, or lift station issues. The start time and volume of the spill—along with any recovered flow—are estimated, followed by cleanup of the affected area and water sampling. All actions are documented as part of the incident response. Finally, the City reports the spill to the appropriate regulatory agency by the spill type.
Table 2.2 Key City Phone Numbers for Spill Reporting
Role Contact Number
Sewer Division (Office Hours)(1) 209-456-8470
Public Works Department (General) 209-456-8400
After-Hours/Emergency Reporting 209-456-8100
Notes:
(1) Spill Reporting Contact.
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CHAPTER 3 LEGAL AUTHORITY
The General Order specifies the following requirements with respect to the Legal Authority element of the SSMP:
The SSMP must include copies or an electronic link to the Enrollee’s current sewer system use ordinances, service agreements and/or other legally binding procedures to demonstrate the Enrollee possesses the necessary legal authority to:
Prevent illicit discharges into its sanitary sewer system from inflow and infiltration (I&I); unauthorized stormwater; chemical dumping; unauthorized debris; roots; fats, oils, and grease; and trash, including rags and other debris that may cause blockages. Collaborate with storm sewer agencies to coordinate emergency spill responses, ensure access to storm sewer systems during spill events, and prevent unintentional cross connections of sanitary sewer infrastructure to storm sewer infrastructure.
Require that sewer system components and connections be properly designed and constructed. Ensure access for maintenance, inspection, and/or repairs for portions of the service lateral owned and/or operated by the Enrollee.
Enforce any violation of its sewer ordinances, service agreements, or other legally binding procedures.
Obtain easement accessibility agreements for locations requiring sewer system operations and maintenance, as applicable.
The legal authority to operate, maintain, and manage the City's wastewater collection originates from the powers granted by the state and federal governments and is codified in the Manteca Municipal Code1 (Municipal Code). The following sections show the City has the authority, through ordinances, services agreements, or other legally binding procedures, to conform to the requirements of the General Order.
3.1 Illicit Discharges
The City’s Municipal Code identifies substances that may not be discharged into the City’s wastewater collection system. This section provides a summary of these ordinances (for the complete text of the ordinances, see the City’s Municipal Code).
Title 13 Public Services, Chapter 20 Industrial Waste:
» Section 13.20.030 – Authority and Responsibility.
» Section 13.20.040 – Standards and Limitations.
» Section 13.20.050 – Administration.
» Section 13.20.060 – Reporting Requirements.
» Section 13.20.090 – Enforcement.
» Section 13.20.110 – Fats, Oils and Grease (FOG) Control. 1 Manteca Municipal Code.
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Title 13 Public Services, Chapter 24 Septic Tank Cleaning:
» Section 13.24.050 – Permit-Suspension-Revocation.
3.2 Design and Construction Requirements
To ensure the proper design and construction of new and rehabilitated sewer facilities, the City has adopted Standards and Specifications.2 The City’s Standards sewer designs were reviewed by the Engineering Department prior to being constructed. New development and redevelopment projects are reviewed and approved by the Public Works Director and Senior Engineer.
The Standards and Specifications establish detailed construction requirements to ensure quality, durability, and consistency across all municipal projects. These include material classifications for pipes, installation guidelines for large-diameter pipelines, and technical specifications covering activities such as earthwork, asphalt concrete, sanitary sewers, water mains, traffic markings, and street lighting.
3.3 Maintenance, Inspection, and Repair Access
The City’s Municipal Code, Section 13.20.110, grants the City, its employees, or authorized agents to enter property for inspections and to collect samples, particularly concerning FOG control. This authority is crucial for maintaining the system and addressing potential blockages. Failure to grant such access can even lead to the suspension of sewer and water services.
3.4 Enforcing Violations
The City may enforce any violation of its sewer ordinances, service agreements, or other legally binding procedures with the following Municipal Codes:
Chapter 13.12 – Sewer Connection Charges.
Section 13.20.090 – Enforcement.
Section 13.24.050 – Permit-Suspension-Revocation.
The City has found these enforcement mechanisms and penalties identified above to be adequate to regulate and provide a safe wastewater collection system.
3.5 Service Agreements
The City maintains service agreements with adjacent jurisdictions and major contributors to its sewer system, including a multi-jurisdictional pretreatment agreement with the City of Lathrop. These agreements define responsibilities for flow contributions, system maintenance, and regulatory compliance. The following lists outstanding agreements the City has with outside entities and is included in Appendix C of this SSMP.
Raymus Village Agreement (1974).
Lathrop Agreement with Amendment (1984).
Lathrop Ordinance Update Letter (2016) with Agreement Update (2005). 2 City Standards.
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Wastewater Service Agreement between Oakwood Lake Water District and the City of Manteca (2019). Wastewater Service Agreement between Oakwood Lake Water District and the City of Manteca Amendment 1 (2021).
Amendment to Agreement Dated March 5, 1984, between Lathrop County Water District and the City of Manteca Concerning Wastewater Treatment (2019).
3.6 Storm Drain Coordination
The City maintains legal authority under Municipal Code Chapter 13.28 to regulate stormwater discharges and prevent illicit connections to the storm drain system. This includes implementation of best management practices (BMPs), enforcement of discharge prohibitions, and coordination across departments to protect water quality and infrastructure. Coordination between storm and sanitary systems is critical to prevent cross-connections, respond to emergencies, and ensure compliance with regulatory requirements. The City’s Collections System Maintenance Crews are also responsible for the O&M of the storm drain system.
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CHAPTER 4 OPERATION AND MAINTENANCE PROGRAM
The General Order specifies the following requirements with respect to the O&M Program element of the SSMP:
The SSMP must include the items listed below that are appropriate and applicable to the Enrollee’s system.
Updated Map of Sanitary Sewer System. An up-to-date map(s) of the sanitary sewer system, and procedures for maintaining and providing State and Regional Water Board staff access to the map(s).
The map(s) must show gravity line segments and manholes, pumping facilities, pressure pipes and valves, and applicable stormwater conveyance facilities within the sewer system service area boundaries.
Preventive Operation and Maintenance Activities. A scheduling system and a data collection system for preventive operation and maintenance activities conducted by staff and contractors. The scheduling system must include:
Inspection and maintenance activities.
Higher-frequency inspections and maintenance of known problem areas, including areas with tree root problems.
Regular visual and closed-circuit television (CCTV) inspections of manholes and sewer pipes.
The data collection system must document data from system inspection and maintenance activities, including system areas/components prone to root-intrusion potentially resulting in system backup and/or failure.
Training. In-house and external training provided on a regular basis for sanitary sewer system operations and maintenance staff and contractors. The training must cover:
The requirements of the General Order.
The Enrollee’s Spill Emergency Response Plan procedures and practice drills. Skilled estimation of spill volume for field operators. Electronic CIWQS reporting procedures for staff submitting data.
Equipment Inventory. An inventory of sewer system equipment, including the identification of critical replacement and spare parts.
This chapter contains a description of the City's O&M Program, including mapping, routine and preventive maintenance, and training.
4.1 Sanitary Sewer System Mapping
The City maintains several sets of mapping information of their collection system. The sets of mapping information are summarized in the following sections.
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4.1.1 Geographic Information System
The Engineering Department maintains a comprehensive map of its sanitary sewer collection facilities in a GIS format using ESRI's ArcGIS software to develop a GIS database of the facilities. The GIS database was developed using their assessor parcel map books, as-built drawings, and record drawings. Maintenance teams have access to computer tablets with the City’s GIS database. Revisions and/or updates to the GIS database are typically identified by staff while performing routine O&M activities. Discrepancies between information contained on the GIS/as-built/record drawings/assessor's parcel map books and field conditions are documented. These discrepancies are submitted to the Engineering Department where they are compared with record map information. Once the discrepancy is agreed upon the AutoCAD, then the GIS database is updated. The Engineering Department developed a formal standard operating procedure for updating GIS information.
Sanitary sewer asset data maintained includes the following:
Pipelines. The geodatabase includes the following fields: asset IDs, material status, slope, downstream elevation, upstream elevation, diameter, and installation year. Manhole. The geodatabase includes the following fields: asset IDs, status, rim elevation, invert elevations, and installation year.
Lift Stations. The geodatabase is limited to providing the physical asset location, status, and asset IDs.
Structures (valves, lamp holes, clean-outs, and plugs). The geodatabase includes the following fields: structure type, rim elevation, invert elevation, installation year, and pipe size.
The City’s GIS database does not include laterals.
4.1.2 Record Drawing Database
The Engineering Department maintains a collection of record drawings of existing sewers and other utilities. Record drawings are stored electronically on an internal server.
4.1.3 Survey Datums
The Citywide Benchmark System is in the California Coordinate System Zone 3, adjusted to the North American Datum of 1983 (Northing, Easting) and City vertical datum (National Geodetic Vertical Datum of 1929) with ties to physical City benchmarks.
4.1.4 Regulatory Mapping Requirements
In accordance with Section 5.14 of the General Order, the LRO shall submit to the State and Regional Water Boards an up-to-date electronic spatial map of its sewer system service area boundaries, including the location of the wastewater treatment facilities using CIWQS. The State Water Board prepared map specifications that can be found on their website.1 Table 1.1 contains the due date for this submittal. 1 Electronic Sanitary Sewer System Service Area Boundary Map Specifications.
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4.2 Preventive Maintenance Program
A Preventive Maintenance Program is a planned approach to maintaining sewer lines to prevent problems like blockages, spills, and costly repairs. It involves regular inspections, cleaning, and addressing potential issues before they escalate. The City has developed a Preventive Maintenance Program that meets Section 5.19 of the General Order expectations. The City has a very effective Preventive Maintenance Program that maintains the integrity of the sewer system and ensures continuous and safe conveyance of wastewater, resulting in a reduced frequency, number, and volume of spills. The Preventive Maintenance Program evolved into a proactive program that is designed to locate, identify, and address problems that may exist in the collection system prior to the occurrence of a failure in the system. It establishes, where possible, standard cleaning cycles. The City’s Preventive Maintenance Program is never static and continues to be re-examined to improve its efficiency and effectiveness.
4.2.1 Work Order Systems
The purpose of a work order system is to program and track all required inspection and maintenance activities within the sanitary sewer system to help prevent blockages, operational issues, and spills. The City currently uses VUEWorks as their CMMS. The City’s CMMS tracks asset performance and preventive and corrective maintenance activities, and tracks the resources needed to operate and maintain sewer system assets. The City’s CMMS is integrated with GIS mapping.
4.2.2 Scheduling of Work
The scheduling allows City staff to put certain activities on a preventive schedule where the CMMS can automatically create work orders on a prescribed interval. Field crews are equipped with computer tablets with access to GIS databases and can generate other work orders if something is identified as needing service while in the field.
The Collections System Supervisor is responsible for assessing staffing levels, tools, equipment, and services that are sufficient to manage the collection system effectively by evaluating CMMS data. The CMMS data can verify current operational practices and identify the need for additional procedures. This integration with GIS allows for tracking of asset performance and helps identify high-risk areas or "hot spots" prone to spills.
In 2023 the City piloted a Smart Cover program that would alert maintenance staff when the level in a manhole becomes high so that they can respond and prevent spills. The City decided to implement the program full time based on the success of the pilot. The City currently operates six Smart Covers with plans to purchase two more. The Collections System Supervisor oversees the Smart Cover Program. Smart Covers were integrated with the City’s CMMS to alert maintenance staff. The City installs Smart Covers along pipes that are hot spots. Since implementing the program, the Smart Covers helped the City prevent 25 potential spills.
4.2.3 Pipeline Maintenance and Inspection
Routine cleaning of the sanitary sewer system is performed on a seven-year cycle. The City’s sewers are cleaned via high-pressure jetting and vacuuming equipment by maintenance crews. Information pertaining to sewer main cleaning activities include lineal footage cleaned, pipe size, pipe length, type of
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debris removed, names of staff performing the cleaning, and any additional pertinent information, which is then uploaded to the City’s CMMS. The City has a lateral root control program where the City applies a root foaming agent to sewer lateral. The City has a problem area program which is discussed in more detail in Section 7.5 of the SSMP.
The City inspects gravity sewers using closed-circuit television (CCTV) on an ongoing basis that averages approximately 6 percent of the system annually. Gravity sewers are inspected by maintenance crew members that have their PACP certification. The City utilizes the POSSUM inspection software for CCTV inspections which is integrated with their GIS. The Planner Scheduler will review the inspection records to determine if further action is required.
See Chapter 8 for additional details on how inspection data is used to make decisions related to pipeline renewal.
4.2.4 Lift Station Maintenance and Inspection
The City’s lift stations are inspected and cleaned approximately every four months. The City has inspection procedures that track the condition of mechanical equipment, and general conditions which include but are not limited to odors, building conditions, electrical component condition, alarm and remote monitoring system condition, and evidence of leakage. The findings of lift station inspections are tracked via checklist and, if necessary, a corrective work order is created. Inspection records are stored using the City’s CMMS. A copy of the City’s Lift Station Inspection Checklist is included in Appendix D.
Routine lift station maintenance consists of cleaning the wet well via high-pressure jetting and vacuuming equipment and greasing of critical components. In addition, defective equipment is replaced on an as-needed basis and usually identified for replacement during routine inspections.
All the City’s lift stations can connect to standby power and are equipped with a transfer switch in case of a loss of power. In addition, the City has two portable generators that are sufficient to power smaller lift stations. Only qualified people may connect the portable generator to a lift station due to OSHA safety requirements. Only four of the City’s lift stations have on-site emergency backup power. All lift stations are configured for bypass pumping with a portable pump.
4.2.5 Manhole Maintenance and Inspection
The City’s manholes are typically cleaned and inspected during scheduled cleaning or inspections of connecting pipelines. The frequency at which manholes are cleaned and inspected allows the maintenance crews to be efficient with their time. Manholes are cleaned via high-pressure jetting and vacuuming equipment by maintenance crews. Manhole inspections consist of maintenance crews making visual observations of the manhole structure. Maintenance crews will document any problems in their CMMS for review to determine if further action is required by the Planner Scheduler. It is recommended that maintenance crews document that manholes have been inspected even if the visual inspections found no problems.
4.2.6 Air Release Valve Inspection and Maintenance
The City’s collection system has approximately 70 air release valves (ARVs). The City’s current ARV maintenance typically includes cleaning, flushing, and testing the isolation valve operations. All ARVs are
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inspected and undergo routine maintenance annually. Maintenance crews will document any problems in their CMMS for review to determine if further action is required by the Planner Scheduler. It is recommended that maintenance crews document that ARVs have been inspected even if the visual inspections found no problems.
4.2.7 Easement Maintenance Program
The City has pipelines that are in easements where access can be hindered by vegetation. The City developed an Easement Maintenance Program where routine maintenance is scheduled and coordinated with property owners to control vegetative growth along these easements. Easement maintenance is scheduled using the CMMS to ensure accessibility.
4.2.8 Pretreatment Inspection and Maintenance
The City monitors industrial waste dischargers based on their waste discharge permit. The City’s Municipal Code, Chapter 13.20, describes the City’s Industrial Waste Ordinance. The permitted industries are self-monitored, and reports are sent to the City twice a year. The consequences for not submitting a report or exceeding water quality or flow numerical limits range from a notice of violation to discharge shut down. The City uses the CMMS to track industrial pretreatment inspector findings, as well as to generate reports and identify hot spot locations.
4.3 Training Program
Training programs are designed to provide the necessary knowledge, skills, and abilities for personnel to comply with the General Order and ensure the proper functioning of the sewer system. A competent workforce contributes to system resilience by better handling tasks and reducing the likelihood of failures.
The following training is available to maintenance staff members:
Attendance at California Water Environment Association (CWEA) sponsored workshops or webinars. On-the-job training coordinated by the Collections System Supervisor. Safety tailgate meetings bi-monthly.
Targeted web-based safety training and awareness program. SSMP training.
As part of the City’s contractual requirements, all contractors working on City-owned facilities will be required to submit documentation regarding their level of training and certifications.
4.3.1 Certification and Licensing
This section summarizes the required and desired certifications and licensing requirements by job title. Wastewater Operations Manager: Grade IV Certification as a Wastewater Plant Operator from the State Water Board.
Collections System Supervisor: A Collection System Maintenance IV certificate and a Mechanical Technologist II certificate from the CWEA.
Lead Wastewater Maintenance Worker: Grade II Mechanical Technologist certificate, Electrical Technologist certificate issued by CWEA, PACP issued by NASSCO.
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Wastewater Maintenance Supervisor: Mechanical Technologist IV certificate and Collection System Maintenance II certificate issued by CWEA.
Wastewater Maintenance Worker I-III: A Collection System Maintenance certificate from the CWEA and a PACP issued by NASSCO are preferred.
Water Resources Regulations Manager: Grade III Laboratory Analyst certificate or a Grade III Environmental Compliance Inspector certificate issued by CWEA. Senior Environmental Compliance Inspector: Grade III Environmental Compliance Inspector certificate issued by CWEA.
Environmental Compliance Inspector: Grade I Laboratory Analysis certificate and a Grade II Environmental Compliance Inspector certificate issued by CWEA. Laboratory Supervisor: Grade III Laboratory Analyst certificate issued by CWEA. Lead Laboratory Technician: Grade II Laboratory Analyst certificate issued by the CWEA. Deputy Director (Infrastructure): Registered Professional Engineer (PE) for Civil Engineering in California.
Deputy Director (Development): Registered PE for Civil Engineering in California. Senior Engineer: Registered PE for Civil Engineering in California. Assistant Engineer: Fundamentals of Engineering (FE) national exam is preferred. As necessary, required OSHA training is coordinated by the Risk Management Division of the Human Resources Department.
4.3.2 Spill Emergency Response Plan Training
See Section 6.1 of this SSMP for details on training related to the SERP.
4.3.3 California Integrated Water Quality System Training The LRO and designated Data Submitter(s) shall review guidance material developed by the State Water Board annually. The following is a list of guidance material developed by the State Water Board and is included on their website.2
Guidance: Category 1 Spill.
Guidance: Category 2 Spill.
Training Video: Submitting Category 1 and 2 Draft Spill Report. Training Video: Submitting Category 1 and 2 Certified Spill Report. Guidance: Category 3 Spill.
Guidance: Category 4 Spill.
Guidance: Enrollee Owned/Operated Lateral Spills.
Guidance: Submit and Certify an Annual Report.
2 General Order Compliance Tools and Guidance.
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4.4 Equipment and Replacement Part Inventories
The City maintains an inventory of equipment and replacement parts. The inventory is managed by the Collections System Supervisor. The inventory list is updated based on the equipment's condition, annual evaluations, work orders for reactive maintenance activities, and the age of the equipment. The equipment and replacement parts are available for performing daily maintenance of the City’s wastewater collection system.
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CHAPTER 5 DESIGN AND PERFORMANCE PROVISION
The General Order specifies the following requirements with respect to the Design and Performance Provision element of the SSMP:
The Plan must include the following items as appropriate and applicable to the Enrollee’s system:
Updated Design Criteria and Construction Standards and Specifications. Updated design criteria, and construction standards and specifications, for the construction, installation, repair, and rehabilitation of existing and proposed system infrastructure components, including but not limited to pipelines, pump stations, and other system appurtenances. If existing design criteria and construction standards are deficient to address the necessary component-specific hydraulic capacity as specified in the System Evaluation, Capacity Assurance and Capital Improvements of the General Order, the procedures must include component-specific evaluation of the design criteria.
Procedures and Standards. Procedures, and standards for the inspection and testing of newly constructed, newly installed, repaired, and rehabilitated system pipelines, pumps, and other equipment and appurtenances.
This chapter presents a summary of the City’s design and construction standards, as well as its standards for the inspection and testing of new sewers, lift stations, and other appurtenances, and for rehabilitation projects.
5.1 Design Criteria
Criteria for the design of new, rehabilitated, and replaced sewer system facilities, including main, tie-ins, service laterals, cleanout, maintenance holes, and other system appurtenances, are necessary to confirm the proper operation of the wastewater collection system. The City’s design standards should be used in conjunction with current drawings, specifications, and codes for the planning, design, and construction of wastewater infrastructure.
The City utilizes typical details, for the planning and design of sewer facilities. The City’s Sewer Standard Plan1
contains typical details with design information such as manhole separation requirements, minimum pipe slopes, diameter, velocity, Manning’s “n” for pipe sizing, and Wastewater Generation Factors for General Plan land use categories. In addition, the City’s Underground Standard Plans2 contain typical
details including information for the design of larger diameter sewer and pipe material. 1 Sewer Standard Plan. 2 Underground Standard Plans.
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The City developed evaluation criteria for identifying existing system deficiencies as well as design criteria for the sizing of new facilities in their Wastewater Master Plan.3 The following summarizes the design criteria used for the sizing of new facilities:
A maximum flow depth versus full flow depth (d/D) of 0.8 under average dry weather flow conditions was modeled.
The maximum allowable surcharge in the gravity portion of the existing collection system is 1 foot provided the water level remains at least 8 feet below the ground elevation under modeled peak wet weather flow (PWWF) conditions. PWWF was evaluated using a 10-year, 24-hour design storm with a Huff distribution.
Lift stations must have sufficient capacity to meet the modeled PWWF with the largest pump out of service.
A maximum velocity cannot exceed 8 feet per second under modeled PWWF conditions.
It is recommended that new facilities are designed to handle future flows.
5.2 Construction Standards and Specifications
Section 71 Sanitary Sewer of the City's Standard Specifications4 outlines the acceptable construction standards and specifications for the construction and installation of proposed pipelines. The City’s Sewer Standard Plan contains typical details in regard to the construction standards and specifications. In addition, the City’s Underground Standard Plans contain typical details for the installation of larger diameter sewers.
The City currently reviews each improvement project during the design and construction phases to ensure conformance with current federal, state, and local standards at that time. The Deputy Directors of Engineering are responsible for overseeing these activities while the Director of Public Works is responsible for approving the design and construction standards and specifications.
It is recommended that the City adopt construction standards and specifications for the construction of lift stations, force mains, and rehabilitation. This will help maintain consistency for the design and construction of these facilities.
5.3 Inspection and Testing
Inspection and testing of new facilities are important to ensure that the City’s established standards are implemented in the field. Using the legal authority described earlier in the SSMP, completed construction is not accepted by the City until inspection and testing have been completed. This approach helps ensure proper operation and maximum life expectancy. Section 71 Sanitary Sewer of the City's Standard Specifications includes procedures for the required testing of all portions of the sewer line. The City requires air testing and deflection test via mandrel. The City’s Standard Specifications require that compaction testing be completed to ensure the bedding and backfill are adequately compacted.
Sections 71-2.06 and 71-2.07 of the Standard Specifications include additional testing needs for larger diameter polyvinyl chloride pipes.
3 2024 Wastewater Master Plan. 4 Standard Specifications.
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It is recommended that the City formally adopts the following inspections and testing:
Video inspection of sewer before the City accepts it. Video inspection of all newly constructed mains and laterals one month before the warranty period expires.
Require that manholes be vacuum tested after backfilling. Require that laterals be tested via air testing.
Formally adopt lift station inspection and testing standards.
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CHAPTER 6 SPILL EMERGENCY RESPONSE PLAN
The General Order specifies the following requirements with respect to the SERP element of the SSMP:
The Plan must include an up to date Spill Emergency Response Plan to ensure prompt detection and response to spills to reduce spill volumes and collect information for prevention of future spills. The Spill Emergency Response Plan must include procedures to:
Notify primary responders, appropriate local officials, and appropriate regulatory agencies of a spill in a timely manner.
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. Comply with the notification, monitoring and reporting requirements of the General Order, State law and regulations, and applicable Regional Water Board Orders. Ensure that appropriate staff and contractors implement the Spill Emergency Response Plan and are appropriately trained.
Address emergency system operations, traffic control and other necessary response activities. Contain a spill and prevent/minimize discharge to waters of the State or any drainage conveyance system.
Minimize and remediate public health impacts and adverse impacts on beneficial uses of waters of the State.
Remove sewage from the drainage conveyance system.
Clean the spill area and drainage conveyance system in a manner that does not inadvertently impact beneficial uses in the receiving waters.
Implement technologies, practices, equipment, and interagency coordination to expedite spill containment and recovery.
Implement pre-planned coordination and collaboration with storm drain agencies and other utility agencies/departments prior, during, and after a spill event. Conduct post-spill assessments of spill response activities. Document and report spill events as required in the General Order. Annually, review and assess effectiveness of the Spill Emergency Response Plan, and update the Plan as needed.
The City’s SERP is a stand-alone document that contains the key elements necessary for an appropriate spill response, notification, emergency incident response, reporting, and impact mitigation. The current plan prepared by Kennedy Jenks meets the requirements of the State Water Board’s General Order. A copy of the SERP is in Appendix B of this SSMP.
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6.1 Spill Emergency Response Plan Training
SERP training is essential for ensuring an effective response to spills and is mandated by the General Order. To comply, spill response training sessions are conducted by maintenance crews to respond to and report spills. The Collections System Supervisor is responsible for scheduling sufficient spill response training sessions such that all maintenance workers attend at a minimum one spill response training session annually. It is recommended that the Collections System Supervisor not inform the workers when this training session will occur. In addition, the Collections System Supervisor will review the performance of the maintenance workers to determine the effectiveness of the SERP and determine if changes are required.
Section 4.3.3 of this SSMP provides details of the CIWQS training the LRO and Data Submitter(s) shall complete annually.
6.2 Post-Spill Assessment and Documentation
The City’s procedures for documenting and reporting spills are outlined in the SERP, which aligns with the latest State Water Board General Order.
For each spill event, the City performs thorough post-spill assessment and documentation. Photos or video of the spill and surrounding area are captured. The final estimated overflow volume is recorded in City records. All complaints, confirmed spills, and subsequent repairs are tracked in the City’s CMMS database. A Spill Field Report Form is completed for every incident, and the Request for Service Form is also used to document initial reports and relevant details.
6.3 Spill Emergency Response Plan Update
The Collections System Supervisor is responsible for reviewing the City’s SERP, spill response training sessions, and spill data annually. The Collections System Supervisor will then determine if changes to the SERP are necessary to improve spill responses.
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CHAPTER 7 SEWER PIPE BLOCKAGE CONTROL PROGRAM
The General Order specifies the following requirements with respect to the Sewer Pipe Blockage Control Program element of the SSMP:
The SSMP must include procedures for the evaluation of the Enrollee’s service area to determine whether a sewer pipe blockage control program is needed to control fats, oils, grease, rags and debris.
If the Enrollee determines that a program is not needed, the Enrollee shall provide justification in its Plan for why a program is not needed.
The procedures must include, at minimum:
An implementation plan and schedule for a public education and outreach program that promotes proper disposal of pipe-blocking substances.
A plan and schedule for the disposal of pipe-blocking substances generated within the sanitary sewer system service area. This may include a list of acceptable disposal facilities and/or additional facilities needed to adequately dispose of substances generated within a sanitary sewer system service area.
The legal authority prohibits discharges to the system and identify measures to prevent spills and blockages.
Requirements to install grease removal devices (such as traps or interceptors), design standards for the removal devices, maintenance requirements, best management practices requirements, recordkeeping and reporting requirements.
Authority to inspect grease producing facilities, enforcement authorities, and whether the Enrollee has sufficient staff to inspect and enforce the fats, oils, and grease ordinance. An identification of sanitary sewer system sections subject to fats, oils, and grease blockages and establishment of a cleaning schedule for each section.
Implementation of source control measures for all sources of fats, oils, and grease reaching the sanitary sewer system for each section identified above.
This chapter discusses the need for a Sewer Pipe Blockage Control Program. The purpose of such a program is to limit the amount of FOG that enters the collection system to an extent feasible.
7.1 Legal Authority
Municipal Code 13.20.1101 Section B establishes the City’s legal authority to prohibit sanitary sewer blockages caused by FOG from all food service establishments to include restaurants, cafeterias, food preparation facilities, convenience stores preparing fast foods for sale, grocery stores providing cooked foods for sale, and other food preparation facilities (food service establishments [FSEs]). All FSEs must 1 Municipal Code 13.20.110 Fats, oils, and grease (FOG) control.
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submit an application2 for FOG Wastewater Discharge Program for FSEs detailing facility operation, equipment, operating schedule, and contact information.
Municipal Code 13.20.110 Section J establishes the City’s legal authority to enter the property of the discharger to conduct inspections of the entire facility, including the interceptors, traps, cooking and storage areas, restrooms, offices, service areas, and other areas of the facility. In addition, the City may collect samples of any discharge from the facility and the interceptors and traps. Failure to grant access may result in the suspension of sewer and water services provided by the City.
Municipal Code 13.20.110 Section K establishes the City’s legal authority to enforce any failure to comply with any provisions of Municipal Code 13.20.110. Failure to comply with these provisions is considered a misdemeanor. The City requires administrative fines per Municipal Code 13.20.090.
7.2 Source Control
Municipal Code 13.20.110 Section D establishes the requirements to install grease interceptors or grease traps (removal devices) and the standards that these removal devices will be designed to. The City requires that all removal devices shall be of a type and capacity approved by the City’s Building Division.
These devices shall be installed in a location to allow for ease of access for cleaning and inspections. The City’s Miscellaneous Standard Plan3 includes typical details of grease interceptors.
Municipal Code 13.20.110 Section E establishes the maintenance requirements for removal devices.
Removal devices shall be continuously maintained in satisfactory and effective operational condition by the discharger at the discharger's expense. Typically, maintenance consists of the removal of floatable solids and settleable solids collected in the grease interceptor/trap, and the cleaning of the walls and piping. Section E establishes the requirements of the discharge to develop a routine maintenance schedule.
Municipal Code 13.20.110 Section E establishes the record keeping requirements for facilities. Facilities are responsible for maintaining appropriate maintenance records that document the routine pumping, cleaning, and repairs made to interceptors/traps via the Grease Interceptor Cleaning and Disposal Log.4 Facilities must complete a Grease Interceptor Pump Out Report5 when a grease interceptor/trap is pumped out. The Grease Interceptor Pump Out Report documents facility information, the condition of the interceptor (including depths of grease, solids, and liquid), the pump out method used, the volume of waste transported, and the condition of the grease trap. The report also includes a certification section to be completed by the individual performing the maintenance. This report serves as a comprehensive record of each pump out event for City review and compliance tracking. These reports are mailed to the Department of Public Works upon completion. All fixtures connected to grease traps or interceptors are inspected regularly. Following each inspection, a Grease Interceptor/Trap Certification Form6 is completed 2 Application for Fats, Oils, and Grease (FOG) Wastewater Discharge Program for Food Service Establishment (FSE). 3 Miscellaneous Standard Plan. 4 Grease Interceptor Cleaning and Disposal Log. 5 Grease Interceptor Pump Out Report. 6 FOG Reduction Program, Grease Interceptor/Trap Certification Form.
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and submitted to the Department of Public Works when the next Grease Interceptor Pump Out Report is submitted.
Municipal Code 13.20.110 Section E requires that all grease interceptor/trap maintenance records shall be retained for a period of not less than three years. These records shall be retained at the FSE and shall be made available for inspection by the City. The City has developed a FOG Book for FSE which serves as a user-friendly, visually oriented guide to support compliance with the City's FOG Control Program. A copy of the FOG Book for FSE is included in Appendix E of this SSMP. The FOG Book for FSE acts as the City’s BMPs. The City requires that all employees of FSEs be trained by ownership/management in the BMPs covering proper FOG disposal, dry-wiping techniques, spill cleanup, and use of approved receptacles. The City requires that training records must be available for review any time by authorized City representatives and these records must be kept for three years. The BMP Training Records Log7 can be accessed on the City’s website.
7.3 Disposal Facilities
The City maintains a list of acceptable disposal facilities for the disposal of pipe-blocking substances generated within the sanitary sewer system service area. This list is included in Appendix F of this SSMP.
7.4 Public Education and Outreach
The City has developed FOG Control Program educational materials for distribution to both the public and FSEs. The City’s public education program promotes proper disposal of pipe-blocking substances through brochures and pamphlets distributed by Collections staff, raising awareness and encouraging compliance among the community. Example materials are included in Appendix G. In addition to distributing outreach materials, the City periodically hosts workshops to educate dischargers on the FOG Control Program and BMPs. The City uses an internal spreadsheet to document public education and outreach activities.
7.5 Identification and Maintenance of Problem Areas
The City has identified sections of the sanitary sewer system prone to FOG blockages, which are known as hot spot areas. The hot spots are inspected and cleaned on a 3-month, 6-month, or 12-month rotation.
The City tracks the hot spots via the City’s CMMS. The CMMS software allows the City to set inspection and cleaning frequencies. The City is currently monitoring 64 problem areas. The City will utilize inspection records to identify sewers that should be included on the hot spot list. 7 Best Management Training Records.
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CHAPTER 8 SYSTEM EVALUATION, CAPACITY
ASSURANCE, AND CAPITAL IMPROVEMENTS
The General Order specifies the following requirements with respect to the System Evaluation, Capacity Assurance, and Capital Improvements element of the SSMP:
The SSMP must include procedures and activities for:
Routine evaluation and assessment of system conditions. Capacity assessment and design criteria.
Prioritization of corrective actions.
A capital improvement plan.
System Evaluation and Condition Assessment. The SSMP must include procedures to:
Evaluate the sanitary sewer system assets utilizing the best practices and technologies available. Identify and justify the amount (percentage) of its system for its condition to be assessed each year. Prioritize the condition assessment of system areas that:
» Hold a high level of environmental consequences if vulnerable to collapse, failure, blockage, capacity issues, or other system deficiencies.
» Are located in or within the vicinity of surface waters, steep terrain, high groundwater elevations, and environmentally sensitive areas.
» Are within the vicinity of receiving water with a bacterial-related impairment on the most current Clean Water Act section 303(d) List.
Assess the system conditions using visual observations, video surveillance and/or other comparable system inspection methods.
Utilize observations/evidence of system conditions that may contribute to exiting of sewage from the system which can reasonably be expected to discharge into water of the State. Maintain documents and recordkeeping of system evaluation and condition assessment inspections and activities.
Identify system assets vulnerable to direct and indirect impacts of climate change, including but not limited to: sea level rise; flooding and/or erosion due to increased storm volumes, frequency, and/or intensity; wildfires; and increased power disruptions.
Capacity Assessment and Design Criteria. The Plan must include procedures to identify system components that are experiencing or contributing to spills caused by hydraulic deficiency and/or limited capacity, including procedures to identify the appropriate hydraulic capacity of key system elements for:
Dry-weather peak flow conditions that cause or contributes to spill events. The appropriate design storm(s) or wet weather events that causes or contributes to spill events.
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The capacity of key system components.
Identify the major sources that contribute to the peak flows associated with sewer spills.
The capacity assessment must consider:
Data from existing system condition assessments, system inspections, system audits, spill history, and other available information.
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 because of climate change. Increases of erosive forces in canyons and streams near underground and aboveground system components due to larger and/or higher-intensity storm events. Capacity of major system elements to accommodate dry weather peak flow conditions, and updated design storm and wet weather events.
Necessary redundancy in pumping and storage capacities.
Prioritization of Corrective Action. The findings of the condition assessments and capacity assessments must be used to prioritize corrective actions. Prioritization must consider the severity of the consequences of potential spills.
Capital Improvement Plan. The capital improvement plan must include the following items:
Project schedules include completion dates for all portions of the capital improvement program. Internal and external project funding sources for each project. Joint coordination between operation and maintenance staff, and engineering staff/consultants during planning, design, and construction of capital improvement projects; and Interagency coordination with other impacted utility agencies.
This chapter summarizes the procedures of the most recent condition and capacity assessments and includes recommended improvements and the latest CIP.
8.1 System Evaluation and Condition Assessment
Sewer condition assessment is a crucial process for evaluating the structural and operational state of a sewer system. It involves inspecting pipes, identifying defects, and determining the need for repairs or replacement. This proactive approach helps prevent system failures, minimize disruptions, and optimize maintenance efforts. This section summarizes the procedures regarding the City’s conditions assessment.
8.1.1 Inspection
Maintenance crews typically complete routine inspections of sewer facilities in conjunction with routine cleaning. Maintenance crews are instructed to inspect sewer facilities and document their findings based on the type of facility using PACP standards. The City utilizes the POSSUM inspection software for CCTV inspections which is integrated with their GIS. These inspection records are sent to the Planner Scheduler to determine if further action is required. In 2016 the City began tracking length of pipe inspected annually and is averaging 6 percent of their system. This equates to approximately a 16-year inspection
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cycle. It is recommended that the City routinely inspects 10 percent of their collection system annually. In addition, the City should consider scheduling higher frequency inspections for sewers that are considered to have a higher consequence of failure. The following shall be used when determining the consequence of failure if the pipe is in the vicinity of surface waters, steep terrain, high groundwater elevations, and environmentally sensitive areas.
8.1.2 Condition Assessment
As stated earlier, the Planner Scheduler reviews the inspection records produced by the City’s maintenance crews. The Planner Scheduler will assess the system’s overall condition utilizing visual observations and evidence. The Planner Scheduler may determine corrective actions required for specific segments. These recommendations are reported to the Collections System Supervisor so that proper corrections actions are scheduled. Corrective actions may include, but are not limited to, cleaning, root control, spot repair, rehabilitation, and replacement. Some corrective actions may require the City to hire outside contractors to complete the work.
In 2016, the City completed a condition assessment that included the inspection of approximately 10 miles of sewer and 187 manholes. The findings of this condition assessment are documented in report titled City of Manteca Sewer Conditions Assessment. A copy of the 2017 Sanitary Sewer Condition Assessment Executive Summary1 is included in Appendix I of the Wastewater Master Plan. This condition assessment helped establish a basis for selecting an appropriate corrective action to address pipeline and manhole defects.
8.2 Capacity Assessment and Design Criteria
The City's most recent efforts in performing an evaluation of the sanitary sewer system capacity are documented in the following studies that address the wastewater collection systems. Sewer Flow Monitoring and Inflow/Infiltration Study2 (November 2022). Wastewater Master Plan3 (February 2024).
Wastewater Peaking Factor (February 2024).
8.2.1 Flow Monitoring Program
The City completed a flow monitoring program for the purpose of calibrating the City’s hydraulic model used in their latest Wastewater Master Plan. The flow monitoring program was completed in 2022 by V&A Consulting Engineers which measured flows, levels, and velocity at 18 temporary metering locations starting March 18, 2022, and continued through May 19, 2022. The flow monitoring program revealed sections of the collection system that experience backwater conditions (i.e., gravity sewer surcharging during periods when flows are well below the full pipe capacity) and are surcharging. The inflow and infiltration (I/I) analysis revealed areas with the highest I/I contributions. A summary of the flow 1 2017 Sanitary Sewer Condition Assessment Executive Summary. 2 Sewer Flow Monitoring and Inflow/Infiltration Study. 3 Wastewater Master Plan.
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monitoring program findings is documented in the Sewer Flow Monitoring and Inflow/Infiltration Study, which can be found in Appendix B of the Wastewater Master Plan.
8.2.2 Capacity Analysis
The City’s collection system capacities were analyzed using a hydraulic model as part of their Wastewater Master Plan. The hydraulic model was developed using the physical collection system data, existing and forecasted populations, flow generation rates, diurnal patterns, and rainfall events. The model was then calibrated using the 2022 flow metering data for dry and wet weather conditions. Once the model was calibrated, it was utilized to evaluate the existing collection system under existing and projected dry and wet weather conditions to identify potential recommended improvements to the existing collection system. The City’s existing hydraulic model was modeled using PCSWMM software by Computational Hydraulics, Inc.
8.2.3 Design Criteria
The City’s design criteria for the collection system are discussed in Chapter 5 of this SSMP.
8.3 Project Prioritization
A method for prioritizing projects was developed as part of the 2024 Wastewater Master Plan to help the City schedule recommended CIP projects. The City’s project prioritization is based on giving the highest priority to those projects that pose the most risk to the community. The priority ranking is as follows:
1. The highest risk to the community is infrastructure that is in poor condition that could potentially cause failure such as a collapsed gravity sewer pipe or treatment process that is not functioning properly.
2. The second highest risk is failure to comply with regulatory requirements such as noncompliant wastewater discharged to the San Joaquin River subjecting the City to mandatory fines.
3. The third highest risk is limited capacity under current flows to convey and treat the wastewater such as gravity sewers that are surcharging at the manholes.
4. The fourth highest priority is limited capacity to serve future growth.
5. The lowest priority are projects desired by City staff to improve O&M.
8.4 Capital Improvement Plan
The City is responsible for developing and maintaining a sewer CIP for all components of the collection system. A CIP was developed as part of the City’s latest Wastewater Master Plan. Recommendations were developed based on the findings from the condition assessments and capacity assessments were then incorporated into a CIP. The City’s CIP includes project schedules, allocation of costs and by extension, the planned completion timeframe for all portions of the program over a 25-year planning horizon. The CIP starts fiscal year 2022-23 and continues through fiscal year 2046-47. The City’s CIP includes a detailed cost breakdown, during the planning, design, and construction phases for each project. Appendix J of the Wastewater Master Plan includes the schedule, completion dates, and cost details for the recommended projects.
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CHAPTER 9 MONITORING, MEASURING, AND PROGRAM
MODIFICATIONS
The General Order specifies the following requirements with respect to the Monitoring, Measuring, and Program Modifications element of the SSMP:
The SSMP must include an Adaptive Management section that addresses SSMP implementation effectiveness and the steps for necessary SSMP improvement, including:
Maintaining relevant information, including audit findings, to establish and prioritize appropriate SSMP activities.
Monitoring the implementation and measuring the effectiveness of each SSMP Element. Assessing the success of the preventive operation and maintenance activities. Updating Plan procedures and activities, as appropriate, based on results of monitoring and performance evaluations.
Identifying and illustrating spill trends, including spill frequency, locations and estimated volumes.
This chapter presents a summary of the steps to be taken by the City to evaluate the effectiveness of this SSMP and update it should improvements be necessary or desirable.
9.1 Monitoring and Maintaining Information
To date, the City has effectively managed and maintained information pertaining to the wastewater infrastructure. Relevant data for all work performed to meet the goals of this SSMP are stored using their VUEWorks. The City has tracked performance measures through the VUEWorks, that include, but are not limited to, the length of pipe cleaned and inspected, the quantity, cause and location of stoppages, spills, and the scheduled maintenance of hot spots. The City will continue to monitor the performance measures it currently tracks. As improvements or modifications are identified, the City will implement the necessary adjustments to the program at the earliest convenience. Appendix H includes preventive maintenance activities and inspections that the City completed from 2015 through 2024.
9.2 Program Measurements
As the SSMP elements are implemented and evolve, the City will modify the elements due to new technology, equipment, code changes, specific program enhancements, and the collection system's rehabilitation through the implementation of the CIP. The staff members responsible for monitoring the SSMP provisions should identify and recommend updates to this SSMP as part of the City's regular performance measurement assessments. Appendix H includes program measurements.
The following performance parameters may be utilized along with other typical industry performance indicators for the City's system:
Number of spills that occurred annually.
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Miles of sewer cleaned annually.
Actual versus scheduled cleaning.
Miles of sewers inspected annually.
System rehabilitation and repairs made.
Annual record of lift station maintenance work orders completed.
These measurements are used to determine if program changes are warranted.
9.3 Modifications Program
The City’s SSMP is considered a “living document” that is continuously edited and updated. The City must update the SSMP periodically to maintain current information and to modify the programs as necessary to confirm program effectiveness and continual compliance with the General Order. Information that will be routinely updated includes, but is not limited to, contact names and phone numbers for City staff responsible for the implementation of specific SSMP programs, staff on standby rotational schedule for spill response, and approved contractors and vendors.
As modifications to elements of this SSMP are deemed necessary, the City will implement them at the earliest practical time. A comprehensive SSMP update, and recertification will occur every six years or as necessary and will include any significant program changes. Note that changes in the SSMP should be tracked in the Change Log, which is included in Appendix I.
9.4 Updating the Sewer System Management Plan
In accordance with Attachment D of the General Order, the updated SSMP will be recertified by the LRO and uploaded to the online CIWQS Sanitary Sewer System Database per next SSMP due date listed in Table 1.1 of this SSMP. Three months prior to the due date of their SSMP update, the LRO will distribute the SSMP, change log, annual reports, audits, and annual SERP updates to staff in charge of implementing an element of the SSMP. The initial review will be used to identify any changes that need to be made to the SSMP and identify any deficiencies. Following the initial review, the LRO and Data Submitter(s) will set up meetings with those in charge of implementing elements of the SSMP. Prior to the meeting, those in charge of an SSMP element will interview staff to get feedback and input. These meetings will help identify additional changes that need to be made to their respective SSMP element. In addition, the LRO may consider distributing the SSMP to other agencies to perform a peer review. The LRO and Data Submitter(s) shall incorporate these changes into the SSMP Update. Once recommendations are incorporated into the document, the SSMP will be ready for public dissemination and ultimately for approval by the City Council.
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CHAPTER 10 INTERNAL AUDIT
The General Order specifies the following requirements with respect to the Internal Audit element of the SSMP:
The SSMP shall include internal audit procedures, appropriate to the size and performance of the system, for the Enrollee to comply with section 5.4 (Sewer System Management Plan Audits) of the General Order.
Per Section 5.4 of the General Order, at a minimum, an internal audit must:
Evaluate the implementation and effectiveness of the City’s SSMP in preventing spills. Evaluate the City’s compliance with the General Order. Identify SSMP deficiencies in addressing ongoing spills and discharges to waters of the State. Identify necessary modifications to the SSMP to correct deficiencies.
Audit programs are intended to provide controls for ensuring that all programs associated with the SSMP are implemented as planned and managed appropriately. Audit outcomes should provide information about challenges and successes in implementing the SSMP by evaluating work practices and operations, documentation, procedures records, and staff for implementation effectiveness and consistency. The audit will identify any program or policy changes that may be needed to continually improve effective implementation. Information collected as part of an audit should be used to plan program or procedure revisions necessary to improve program performance.
10.1 Schedule
The City will conduct an internal audit of its SSMP, at a minimum frequency of once every three years. The audit's due date is within six months after the end of the three-year audit period. Table 1.1 includes the City's next audit due date and audit periods. The City will submit a complete audit report that includes using CIWQS:
Audit findings and recommended corrective actions.
A statement that sewer system operators' input on the audit findings has been considered. A proposed schedule for the Enrollee to address the identified deficiencies.
10.2 Responsible Parties for Program Audit
The LRO is responsible for coordinating and compiling the major aspects of the program audit, including relevant interviews and data collection. The LRO may also designate key City staff that are knowledgeable in the City's wastewater collection facilities to assist with the audits. The City's maintenance staff must be involved in completing the audit. The audit must be completed internally under the supervision of the LRO.
SEWER SYSTEM MANAGEMENT PLAN
SEPTEMBER 2025 / FINAL / CAROLLO
CITY OF MANTECA
WASTE DISCHARGE ID: 5SSO10993 10-2
10.3 Program Audit Report
The City's LRO will be responsible for coordinating the major aspects of the program audit, including relevant interviews and data collection as it relates to the SSMP audit. The information gathered for the purpose of an SSMP audit may include, but is not limited to, the following:
Reviewing the progress made on the development of SSMP elements. Reviewing the status of the SSMP programs implemented. Identifying the success of various SSMP programs implemented. Identifying the improvements necessary to various SSMP programs. Describing system improvements within the audit period. Describing planned system improvements.
Reviewing data related to spill occurrences.
Upon completion of the information gathering, the City must document the results in an audit report. Any major modifications to the SSMP that result from the SSMP audit will require certification by the City Council. The LRO will certify and submit an audit report to the online CIWQS Sanitary Sewer System Database per the requirements in Section 3.10 of Attachment E1 of the General Order. The City must retain the audit report on file in compliance with the General Order. A copy of the report must be submitted to the State and Regional Water Boards.
SEWER SYSTEM MANAGEMENT PLAN
SEPTEMBER 2025 / FINAL / CAROLLO
CITY OF MANTECA
WASTE DISCHARGE ID: 5SSO10993 11-1
CHAPTER 11 COMMUNICATION PROGRAM
The General Order specifies the following requirements with respect to the Communication Program of the SSMP:
The Plan must include procedures for the Enrollee to 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 its 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.
This chapter presents a summary of the steps to be taken by the City to communicate with the public on the development, implementation, and performance of the SSMP.
11.1 Public Outreach
The City will participate in public events to educate the public on the importance of stormwater control, FOG control, and water conservation. This is in addition to the FOG outreach the City already performs with industrial connections and FSEs, which is discussed in more detail in Section 7.4 of this SSMP. When mailing bills to customers the City will occasionally include pamphlets with contact information. The City plans to expand their public outreach campaigns to include multilingual communications as well as targeted outreach to assisted living programs, rental halls, car washes, and maintenance yards.
11.2 Closure Alerts
During a spill, it is standard procedure to secure the affected area and keep the public away. Should the City experience a spill that requires closures of public areas or enters a source of drinking water, signs will be placed indicating the issue and providing contact information. Staff will remain on site too until the appropriate authorities respond. The City will follow the advice of higher authorities, such as the local environmental health department and other regulatory authorities.
11.2.1 Public Participation
Public meetings to discuss City-related issues are held regularly in the City Chambers located at City Hall, 1001 W. Center Street, Manteca, California 95337. The City encourages residents to attend council meetings to become better informed about how the City works and various issues. The council meetings provide the residents and concerned citizens a forum to provide the Board with input on particular programs through the Public Hearing process and through the Citizen Participation portion of each Board meeting. During Citizen Participation, each person who wishes to address the Council on an item not on the agenda may do so. Copies of the Council Agenda are made readily available to the public from the
SEWER SYSTEM MANAGEMENT PLAN
SEPTEMBER 2025 / FINAL / CAROLLO
CITY OF MANTECA
WASTE DISCHARGE ID: 5SSO10993 11-2
City's website or City Hall. Approval of the completed SSMP is required by the City Council during a public council meeting.
Project-specific meetings may also be convened with community leaders and other citizens to discuss the impacts, schedule, and criteria of sewer-related projects and efforts. These meetings give citizens a forum to learn about the City's activities, voice their concerns, and receive clarification on a variety of issues.
Often, the project managers arrange these meetings.
SEWER SYSTEM MANAGEMENT PLAN
SEPTEMBER 2025 / FINAL / CAROLLO
CITY OF MANTECA
WASTE DISCHARGE ID: 5SSO10993
APPENDIX A CONTACT INFORMATION
SEWER SYSTEM MANAGEMENT PLAN
SEPTEMBER 2025 / DRAFT / CAROLLO
CITY OF MANTECA WASTE DISCHARGE ID: 5SSO10993 A-1
Table A.1 Contact Information
Name Position Email Telephone Spill Response Staff Toni Lundgren City Manager [email protected] 209-456-8000 No Kevin Jorgensen II Director of Engineering [email protected] 209-456-8000 No Jose Jasso Acting Director of Public Works [email protected] 209-456-8000 No Dustin Valiquette Wastewater Operations Manager [email protected] 209-456-8486 No Derek Perry Collections System Supervisor [email protected] 209-456-8472 Yes Darold Gainous Lead Wastewater Maintenance Worker [email protected] Yes Roy Harwell Senior Wastewater Maintenance Worker III [email protected] Yes Deven Goodwin Wastewater Maintenance Worker III [email protected] Yes Ryan Collins Wastewater Maintenance Worker III [email protected] Yes Ian Watson Wastewater Maintenance Worker III [email protected] Yes Brent Linton Wastewater Maintenance Worker II [email protected] Yes Robert Fredericksen Wastewater Maintenance Worker II [email protected] Yes Humberto Webb Wastewater Maintenance Worker II [email protected] Yes Greg Perez Wastewater Maintenance Worker I [email protected] Yes
SEWER SYSTEM MANAGEMENT PLAN
SEPTEMBER 2025 / FINAL / CAROLLO
CITY OF MANTECA
WASTE DISCHARGE ID: 5SSO10993
APPENDIX B SPILL EMERGENCY RESPONSE PLAN
City of Manteca
Spill Emergency
Response Plan
2 June 2023
Prepared for
City of Manteca
1001 W. Center Street
Manteca, CA 95337
KJ Project No. 2368007.00
CITY OF MANTECA
SPILL EMERGENCY RESPONSE PLAN
Table of Contents
LIST OF TABLES...................................................................................................................I LIST OF FIGURES ................................................................................................................I LIST OF ATTACHMENTS.....................................................................................................II Introduction to Spill Emergency Response Plan........................................1 Category 1 ...........................................................................................1 Category 2 ...........................................................................................2 Category 3 ...........................................................................................2 Category 4 ...........................................................................................2 Private Lateral Sewage Discharges .....................................................2 Section 1 – Notification to the City ..............................................................2 Section 2 – Response by City.......................................................................3 Section 3 – Reporting Procedure...............................................................11 Section 4 – Required Notifications (Not to be confused with Reporting) ....................................................................................................13 Spill Tracking .....................................................................................13 Staff and Contractor Personnel Awareness/Training..........................13 Key Staff ............................................................................................14
LIST OF TABLES
Table 1: Spill Emergency Posting Decision Process
LIST OF FIGURES
Figure 1: City of Manteca Spill Response Field and Reporting Procedures Flowchart Figure 2: City of Manteca WQCF Spill Notification List
Figure 3: Existing Sewer Collection
Figure 4: Existing Storm Drain System
LIST OF ATTACHMENTS
Attachment I: Request for Service Form
Attachment II: (Sample) Spill Field Report Form
Attachment III: Spill Flow Estimation Pictures
Attachment IV: Chain-of-Custody Record and Analysis Request Attachment V: City of Manteca Key Personnel
Prepared by:
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CITY OF MANTECA
SPILL EMERGENCY RESPONSE PLAN
Introduction to Spill Emergency Response Plan
The City of Manteca’s (City’s) Spill Emergency Response Plan (SERP) presents a documented procedure for:
• identifying a sanitary sewer overflow (SSO) or spill; • responding to a spill;
• notifying City, emergency and regulatory officials;
• notifying the public of potential environmental and health hazards, if applicable; • documenting the spill event and response;
• reviewing the cause and generating improvements to prevent/minimize a future spill event; and
• developing an implementation plan to prevent/minimize a future spill event.
This SERP describes the need to mobilize labor, materials, tools, and equipment to correct conditions that may cause or contribute to a non-permitted discharge. The plan applies to a wide range of potential system failures that could create an overflow event. The SERP is composed of the following sections: 1) notification, 2) response, and 3) reporting.
This SERP is an update of the City’s previous Sanitary Sewer Overflow Response Plan, incorporating the changes from the amended State Water Resources Control Board’s (SWRCB) Monitoring and Reporting Program (MRP) (Order 2013-0058-EXEC) and to ensure compliance with the Waste Discharge Requirements (WDR) (Order 2022-0103-DWQ). The SERP is reviewed annually and updated as needed.
Spill Classification
Under the MRP Order No. 2013-0058-EXEC and newly amended Order No. 2022-0103-DWR, spills are categorized into the following categories described below. However, regardless of the spill category or volume, the classification does not alter the City’s spill response procedures (containment, control, and recovery) or staff’s responsibility to understand and comply with notification and reporting processes.
Category 1
Discharges of untreated or partially treated wastewater of any volume resulting from the City’s sanitary sewer system failure or flow condition that:
Reach surface water, including surface water that contains no flow or volume of water; or
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Reach surface water from a drainage conveyance system due to sewage not being captured or disposed of properly, unless the drainage system discharges to a dedicated stormwater infiltration basin.
Category 2
Discharges of untreated or partially treated wastewater greater than or equal to 1,000 gallons resulting from the City’s sanitary sewer system failure or flow condition that does not reach a surface water.
Category 3
Discharges of untreated or partially treated wastewater equal or greater than 50 gallons and less than 1,000 gallons resulting from the City’s sanitary sewer system failure or flow condition that does not reach a surface water.
Category 4
Discharges of untreated or partially treated wastewater less than 50 gallons resulting from the City’s sanitary sewer system failure or flow condition that does not reach a surface water.
Private Lateral Sewage Discharges
Discharges of untreated or partially treated wastewater resulting from blockages or other problems within a privately owned sewer lateral connected to the City’s sanitary sewer system or from other private sewer assets.
Section 1 – Notification to the City
Overflows and spills may be reported by City employees, contractors or by the general public.
Indications of an spill could include “dirty” discharge, foul odor, or unusual flooding such as overflowing manholes, cleanouts or pump stations. City employees report problems directly to wastewater maintenance or City staff. Telephone calls from the public are received by plant staff at the City’s Wastewater Quality Control Facility (WQCF) and/or the City’s police department and routed to the WQCF staff. For the complete chain of communication for responding to spills refer to Figure 1, Spill Response Field and Reporting Procedures Flowchart.
After receiving notification of a possible spill, the City records all relevant information on a Request for Service Form (Attachment I). Relevant spill information recorded on the Request for Service Form includes:
• Time and date call was received;
• Specific location;
• Description of problem;
• Time possible spill was noticed by the caller;
• Caller’s name and phone number;
• Observations of the caller (e.g., odor, duration, back or front of property); and • Other relevant information that will enable the maintenance worker to quickly locate, assess, and stop the overflow.
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Information from the Request for Service Form is used by the plant staff to dispatch the appropriate maintenance worker or crew to the area. Once arriving on the site and the maintenance worker or crew confirms that an spill is occurring then a Spill Field Report form will be completed as shown in Attachment II.
Standard Operating Practices are followed when a spill reaches surface waters, for notification procedures refer to Figure 2, City of Manteca WQCF Spill Notification List.
Section 2 – Response by City
Any system failure within the City’s service area that causes or threatens to cause a spill will initiate an immediate response to isolate and correct the problem. Crews and equipment are available 24 hours per day. The maintenance worker must use discretion when assisting private property owners, occupants, or other non-City employees, as the City could face increased liability for damages inflicted to private property during such assistance.
The following procedures have been developed for responding to spills. The purpose of these procedures is to ensure that all spill responses are handled efficiently and effectively and that all regulatory requirements are met. Maintenance workers are required to know and follow these procedures. Figure 1 summarizes the chain of communication for responding to a spill.
In order to limit public access to and contact with areas affected with spills, maintenance workers/supervisor will follow the following response procedures:
I. Investigate and Assess the Problem:
A. Plant staff notifies the maintenance worker of potential spill and issues Request for Field Service for response.
B. Maintenance worker arrives on site and performs an investigation and assessment of the overflow. The maintenance worker will take immediate action to establish a perimeter and barricade the overflow in order to contain the area. Once the overflow perimeter has been established appropriate health hazard signs will be posted to protect the public from coming in contact with the overflow. The maintenance worker will determine the extent of the overflow, what additional City Operation and Maintenance (O&M) resources will be needed (spill response vehicle, vactor truck, rodder, backhoe and operator, etc.), what additional contract services may be needed (e.g., construction contractor, closed circuit television [CCTV] crew, etc.), and if notification of other agencies is required at that time. Pictures and/or video of the spill and surrounding area will be taken to document the spill.
C. Maintenance worker notifies City staff of recommended response. Maintenance worker will take the lead by following these procedures:
1. Locate spill by address, cross street and point of overflow (i.e., manhole, cleanout, pump station, broken or damaged pipe, air/vacuum release valve [AVRV], flow meter structure, etc.).
2. Determine the current magnitude of the spill.
• Flooded structure
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• Storm water inlet or exposure to waters of the U.S.
• Potential for public exposure
• Potential for other environmental impacts
• Related problems
a. Is overflow related to a street collapse?
b. Is overflow related to construction work?
c. Is overflow related to fats, oil and/or grease (FOG) or other debris? d. Is overflow causing a traffic hazard such as displaced manhole cover or street flooding?
• Provide initial estimate of overflow rate using pictures (refer to Attachment III).
• If the spill meets any one or all of the criteria listed below immediately contact designated City staff:
▪ Discharges to surface water and/or reaches a drainage channel tributary to a surface water, or
▪ Reaches a MS4.
• Estimated damage to public and private property. City staff may enter private property for the purposes of documenting structural damage, floor and wall coverings, and personal property.
• Take photographs and/or videotape of spill event and response as necessary to document the event.
3. Sampling of receiving waters impacted by the overflow is required to take place no later than 12 hours after the City’s knowledge, particularly whenever an overflow is greater than 50,000 gallons and reaches a storm drain or surface water. Sampling at appropriate locations such as upstream, at entry point and downstream of overflow location will allow the City to establish and monitor the levels of contamination as well as to establish or compare with the natural background levels of bacteria in the receiving waters. If sampling is to be conducted, the Collection System Supervisor will communicate with the laboratory personnel to establish and complete the sampling regime. The Laboratory Analyst will notify San Joaquin County Department of Environmental Health (DEH) that sampling and monitoring is being conducted, and to verify if additional testing is required. The sampling regime is to be continued until a determination is made that contamination resulting from the overflow event no longer exists and no longer poses a health risk to the public. • Contact lab personnel and transport sample to laboratory for analysis along with appropriate chain of custody form (Attachment IV). The sample will at least test for Fecal Coliform as a bacterial indicator to comply with the Fourth Edition of the Water Quality Control Plan (Basin Plan) for the Sacramento River and San Joaquin River Basins.
4. Begin initial documentation by completing Spill Field Report Form (Attachment II).
II. Coordination with Hazardous Material Response:
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If a suspicious substance (e.g., oil sheen, foamy residue) or odor (e.g., gasoline) is detected, the maintenance worker will contact City staff before taking further action. The City staff will contact the appropriate Hazardous Materials (HAZMAT) response team, according to City protocol, should site conditions be determined hazardous. The maintenance worker will remain at the perimeter of the area.
PLEASE NOTE: Vehicle engines, portable pumps, and open flames (e.g., cigarette lighter) may cause an explosion or fire if exposed to flammable fluids or vapors.
All City personnel will keep a safe distance and observe caution until the proper authority declares the area to be safe for entry.
Cleanup of the hazardous material is supervised by the HAZMAT team. The maintenance worker(s) follows the instructions of the HAZMAT supervisor, but does not participate in the cleanup of the hazardous material. The maintenance worker proceeds with spill response procedures only after the HAZMAT supervisor determines it is safe to enter the area.
III. Traffic Control:
Traffic control may be needed immediately to protect the public or City staff. Typically, immediate traffic control is needed if there is a street collapse or significant depression in the pavement that is related to the sewer, if the manhole is ajar, or if the overflow causes flooding of the street. Traffic control may also be needed to prevent wastewater from being further dispersed and to protect the maintenance worker(s) while containing the overflow and removing the blockage, determining the cause or repairing the problem.
A. Provide traffic control per City standards and regulatory standards.
B. If necessary, contact City police, highway patrol and County of San Joaquin Sheriff to assist with providing proper traffic control.
IV. Contain spill:
Containment of the overflow is the next step. Containment becomes more difficult if the overflow reaches the storm drain system or drainage way since the overflow can rapidly contaminate receiving waters such as creeks, streams, rivers, and other water bodies.
Figure 3 – Existing Collection System and Figure 4 – Existing Storm Drainage are guides to use by City maintenance worker(s) to contain the overflow. During dry weather, the storm drain system may be used to store the overflow if it can be plugged downstream of the overflow or if the downstream storm drain pump station can be deactivated.
A. Options for containing overflow:
1. Overflow onto ground
a. Rubber mats at catch basin or drain inlet.
b. Sand bags in gutter.
c. Dig trench in earth.
2. Overflow into storm drainage
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a. Trace overflow in storm drainage system to downstream end point. b. Plug all affected storm system outlets or block the creek and channels if necessary to contain spill.
c. If possible, turn off storm water pump station.
3. Overflow onto private and/or public property
a. Confirm spill not caused by the City sewer system (pump station, interceptor, trunk, main or lateral).
b. Notify property owner or resident.
c. Suggest private property owner or resident contact local plumber or other appropriate services such as restoration contractor.
B. Post warning signs around contaminated area
C. Required equipment for containing overflows:
1. Overflow onto ground and in buildings
a. Rubber mats
b. Sand bags
c. Plastic sheets
d. Bypass pumps and pipes/hoses
e. Vactor truck
f. Spill Response Truck
g. Portable emergency generator
2. Overflow into storm drain
a. Plugs
b. Bypass pumps and pipes/hoses
c. Vactor truck
d. Spill Response Truck
e. Portable emergency generator
3. Overflow at pump station
a. Emergency generator
b. Bypass pumps and pipes/hoses
c. Vactor truck
d. Spill Response Truck
e. Portable emergency generator
4. Additional warning signs
a. If public notification is determined necessary, City Management will determine the need for further public notification through printed or electronic news media or by alternative notification measures (i.e., front 7 REV. 6/2/23
door hangers). During the initial investigation and assessment of the spill the City will barricade the overflow and post the appropriate warning signs (refer to Section 2, paragraph I.B.). Table 1 below describes the procedures to follow for additional public notification:
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Table 1: Spill Emergency Posting Decision Process
Spill Emergency Response Plan
City of Manteca
Spill Posting for a Confirmed Overflow
1 Maintenance worker confirms a possible spill to City staff 2 The maintenance worker provides detailed spill information to City staff
• Overflow history at the spill site
• Rainfall data, if wet weather related
• Map identifying the spill location, surrounding area, and surface waters that may be impacted
• Maintenance worker provides input on the posting
recommendation
3 City staff consults and recommends whether or not to post warning signs.
4 If posting is recommended, warning signs are posted by the maintenance worker at specified locations.
5 City staff decides when the warning signs are to be removed after notification of clean up by the maintenance worker.
5. Begin preliminary notifications:
Refer to Figure 2 for spill reportable procedures, and to the Spill Field Report Form, Attachment II.
V. Correct Cause
The cause of the overflow may be located a considerable distance downstream of the actual overflow in areas with flat terrain. During large storms, overflows may occur because of infiltration and inflow (I/I) of storm water into the sewer system. I/I can greatly increase the flow in the collection system and cause overflows from pipes that are only partially blocked by roots, grease, or debris. However, during very large storms I/I can cause the flow in the collection system to exceed the hydraulic capacity of the pipes or pump stations. Under these conditions, it may not be possible to stop the overflow until the flows recede.
A. Locate cause of overflow
1. Sewer main
a. Check flow in manholes.
b. Blockage should be between manhole with sluggish flow or surcharging (upstream manhole) and manhole with very little flow or is dry (downstream manhole).
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2. Sewer lateral
a. Check flow in City cleanout. If cleanout does not have flow, stoppage is located on private property and is not the City’s responsibility. b. If there is no existing City cleanout, notify property owner to clear stoppage.
3. Pump station
a. Check alarm system for indication of problem. All alarms are telemetered by the supervisory control and data acquisition (SCADA) system to the WQCF on Yosemite Road.
b. If power failure has occurred, determine if pump station has an emergency generator and if emergency generator is operating. If pump station has an emergency generator outlet, deliver City’s portable emergency generator to the site.
c. Observe pump station for proper operation.
B. Clear Blockage
1. Within Sewer Main
a. Clear line from dry manhole, if possible, with high pressure cleaning or power rodding equipment and vactor truck.
b. Determine cause of blockage (if possible) by evaluating sample of debris or material captured downstream of cleaning and/or conduct CCTV inspection.
2. Within Sewer Lateral
a. Maintenance worker will rod from property line cleanout to eliminate stoppage in City lateral.
3. If blockage cannot be cleared:
a. Increase containment or initiate bypass pumping.
b. Perform CCTV inspection to determine problem.
c. Repair broken sewer line or excavate pipe and remove section with blockage and replace with a new pipe section and couplings.
C. Pump station:
1. If pump station does not have power, connect portable emergency generator or portable bypass pump system.
2. Check fuel for emergency generator or bypass pump system.
3. If a pump is not operating properly, activate standby pump system.
4. Investigate force main for possible damage or blockage.
5. Make other repairs as necessary.
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VI. Final Volume Estimate:
Spill response staff should make every effort to maintain a careful chronology of the events during an overflow event and make every attempt to conduct linear measurements of the discharge streams and flow velocities in order to effectively quantify the overflow volume. Photo documentation of the overflow event should also become a routine procedure in the overflow documentation process. The final overflow volume is estimated and will be stored in the City’s records.
A. Estimate final overflow rate using tables and pictures (refer to Attachment III).
B. Overflow volume can also be estimated by multiplying the overflow duration by the overflow rate.
C. Enter overflow volume in the Spill Field Report Form.
VII. Initiate Clean-up:
Removal and replacement or disinfection of contaminated soil or drainage ways is only performed when directed by the appropriate agencies (e.g., DEH, California Department of Fish and Wildlife, etc.).
A. Storm drain or drainage way:
1. Pump or vacuum out wastewater
2. Remove debris
3. Wash concrete and contain wash water, pump or vacuum out
4. Remove contaminated soil/plants
5. Sanitize spill area and drainage conveyance system without impacting receiving waters
6. Remove all plugs/dams used to contain overflow
7. Sanitize storm drain or drainage way without impacting receiving waters B. Street:
1. Remove debris
2. Wash pavement and contain wash water
3. Contain and transport wastewater by pumping or vacuuming
4. Sanitize spill area without impacting receiving waters VIII. Receiving Water Sampling – See Section 2.I.C.3.
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Section 3 – Reporting Procedure
Certain overflows are required by law to be promptly reported to regulatory agencies. As described in the MRP, the timeframe for spill reporting depends on the spill category:
Category 1 and Category 2 – Must be reported to the online CIWQS Sanitary Sewer System Database as follows:
Draft reports will be submitted to the online CIWQS Sanitary Sewer System Database within three (3) business days of the City becoming aware of the spill. A final report will be certified through the online CIWQS Sanitary Sewer System Database within 15 calendar days of the end date of the spill. Category 1 – Spills 50,000 gallons or greater must be required to the online CIWQS Sanitary Sewer System Database as follows:
A Spill Technical Report will be submitted to the online CIWQS Sanitary Sewer System Database within 45 calendar days of the end date of the spill. Category 3 will be reported to the online CIWQS Sanitary Sewer System Database and certified within 30 calendar days after the end of the calendar month in which the spill occurs (e.g., all Category 3 spills occurring in the month of February will be entered into CIWQS and certified by March 30).
Category 4 will be reported to the online CIWQS Sanitary Sewer System Database and certified within 15 days after the end of the calendar quarter (e.g., all Category 4 spills occurring in the months of January through March will be entered into CIWQS and certified by April 15).
PLSDs – Reported to the online CIWQS Sanitary Sewer System Database upon the City’s discretion.
Monthly Certification of “No Spills” or “Category 4 Spills Only” – If there are no spills or only Category 4 Spills during the calendar month, the City will either:
Certify, within 30 calendar days after the end of each calendar month a “No Spill” or “Category 4 Spills Only” statement in the online CIWQS Sanitary Sewer System Database certifying that there were no spills for the designated month; or Certify, quarterly within 30 calendar days after the end of each quarter, “No Spill” certification statements in the online CIWQS Sanitary Sewer System Database certifying that there were either no spills for each month or only Category 4 Spills in the quarter being reported on.
The designated staff will report as required above and continue with completing and processing the closure report as described below:
A. Review, complete and sign required reports:
1. Reportable Spill Field Report Form (Attachment II).
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B. Documentation and Data Tracking:
1. Forward a copy of each signed report to the Collection System Supervisor for tracking and Sewer System Management Plan (SSMP) audits.
2. Assign each Spill Field Report Form with respective CIWQS ID number.
C. Review the SWRCB MRP Statewide General WDR for Wastewater Collection System Agencies to confirm the appropriate requirements are satisfied.
D. Reports and Data Capture:
Periodically, spills may occur in privately owned laterals. While the City is not legally required to respond to these spills, the City will use its resources to clean up the spill if it flows onto public property. The Collection System Supervisor and City Staff decide whether or not to bill the owner for these City services.
1. Assure that appropriate documentation has been completed.
2. For “Private Lateral Spills” provide copies of job-sheets/time-sheets to City staff.
E. Customer Satisfaction
City staff or maintenance workers may follow up in person or by telephone with interested citizen(s) who either reported the overflow or expressed concerns about public health or the environment. Document the discussion in a memo to the file and add spill CIQWS identification number, date, person contacted, and phone number.
F. Media Notification Procedure
If an overflow affects surface water or private property, media notification may be necessary. The City Public Works Director or City-designated representative determines if media notification is necessary. If so, the City will take the following steps:
• The maintenance worker verifies the spill and reports back to City staff, who then informs the Public Works Director;
• The Public Works Director is the "first line" of response to the media for any spill;
• Calls received from the media at any time are referred to the Public Works Director; and
• The Public Works Director or City-designated representative is the only City representative authorized to be interviewed by the media. No other personnel are authorized to speak on behalf of the City unless authorized by the City Public Works Director.
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Section 4 – Required Notifications (Not to be confused with Reporting) Effective September 9, 2013, an amendment by the SWRCB to the Monitoring and Reporting Requirements for Statewide General WDR for Sanitary Sewer Systems Order No. WQ 2013- 0058-EXEC was issued. The revised WDR stipulated the following notifications requirements be included in this SERP:
For any Category 1 spills greater than or equal to 1,000 gallons that results in a discharge to a surface water or Category 2 spills, the City will, as soon as possible, but not later than two (2) hours after:
The City has knowledge of the discharge,
Notification is possible, and
Notification can be provided without substantially impeding cleanup or other emergency measures,
notify the California Office of Emergency Services (OES) at (800) 852-7550 and obtain a notification control number.
Effective December 6, 2022, Waste Discharge Requirements Order 2022-0103-DWQ was issued. The revised WDR stipulated the following notifications requirements be included in this SERP:
For any Category 3 spill greater than or equal to 50 gallons, the City will, as soon as possible, but not later than three (3) days after the City has knowledge of the discharge, notify the Regional Water Board.
Spill Tracking
All complaints, confirmed spills, and sanitary sewer system repairs will be recorded into the City’s CMMS database for Request for Service.
Staff and Contractor Personnel Awareness/Training
For construction projects that involve excavation in and around existing wastewater facilities, the appropriate City Staff and contractor personnel will be made aware of and follow the SERP procedures by:
• During the design process for sewer related projects, the response plan will be part of the specifications.
• For sewer related projects, a pre-construction meeting will be held to emphasize important issues related to the project. One of the key points will be review of the Spill Emergency Response Plan.
• Initial Training Program – City O&M Department for the Collection System and WQCF will review the Spill Emergency Response Plan and be trained to complete a Spill Field Report Form; notification procedure; protection procedures for City Staff, public, and environment; clean up procedures; and implementation plan to prevent/minimize future spill events.
14 REV. 6/2/23
• Training Program – City O&M Department Staff will be trained once per year on the Spill Emergency Response Plan elements.
• New Employee Training – prior to starting work in the field for the City, each new employee will be required to review with their properly-trained supervisor the Spill Emergency Response plan elements.
Key Staff
The key spill response staff are listed in Attachment V.
Figures
Figure 1 - City of Manteca SSO Response Field and Reporting Procedures Flowchart Initial Notification of SSO by:
public, sanitary sewer worker, public
employee, contractor or other.
Wastewater Quality Control
Facility Staff
Is the SSO from City
Sewer or Private Sewer?
City Sewer or
Undetermined Private Sewer
Is SSO contained on
Private Property?
Yes
Enter
Receiving Water?
Maintenance Worker
Maintenance Worker
1. Notify Collection System Supervisor
2. Traffic Control, if necessary
3. Contain SSO
4. Correct Cause
Collection System Supervisor
Maintenance Worker
No
No Yes
Did SSO enter
Receiving Water from
land overflow?
Maintenance Worker
1. Notify Collection System Supervisor
2. Dam, if possible
3. Take Receiving Water samples
upstream and downstream of SSO
entry, if possible.
Collection System Supervisor
1. Notify Public Potential Health
& Environmental Hazard and
Regulatory agencies
2. Post Public Signs
3. Estimate Volume
Maintenance Worker
1. Notify Collection System Supervisor
2. Traffic Control, if necessary
3. Contain SSO; Dam, if possible
4. Correct Cause
5. Take Receiving Water
samples upstream and downstream
of SSO entry, if possible
Collection System Supervisor
Maintenance Worker
No
1. Initiate Clean up, if possible
2. Complete and Process
Closure Report
1. Notify Public Potential Health
& Environmental Hazard and
Regulatory agencies
2. Post Public Signs
3. Estimate Volume
Maintenance Worker
1. Initiate Clean up, if possible
2. Complete and Process
Closure Report
Maintenance Worker
1. Initiate Clean up, if possible
2. Complete and Process
Closure Report
1. Initiate Regulatory Notification
2. Estimate Volume
Reporting & Notifications
Notifications
Online CWIQS Sanitary Sewer
System Database
Office of Emergency Services (OES)
Notified within 2 hours
Category 3
50 to <1,000 gallons
Category 2
>= 1,000 gallons Category 1
Did spill reach
surface water? Yes No
Additional
Requirements
SSO Technical
Report
Water Quality
Monitoring Plan
Draft within 3-Business Days
Final within 15 Calendar Days Within 30 Calendar Days
1. Notify Property Owner
2. Complete SSO Report
Investigate and Assess
Category 1>= 1,000 gallons
reaches surface water or probably
discharged to surface water
Yes
No
Yes
Reporting
Category 4
<50 gallons
Within 15 Calendar Days after
the end of the Calendar
Quarter
FIGURE 2
City of Manteca WQCF Spill Notification List
Spill Emergency Response Plan
1. Within two hours of becoming aware of any Category 1 Spill greater than or equal to 1,000 gallons discharged to surface water or spilled in a location where it probably will be discharged to surface water, notify the California Office of Emergency Services (OES) and obtain a notification control number. Follow direction from the OES on additional agencies that may need to be contacted. Document direction issued by OES. Follow plan for written reporting per Spill Emergency Response Plan.
2. Required Notification Contact Phone Numbers (See Item 4 below for possible information required to report to OES):
• Office of Emergency Services (OES), State Warning Center (800) 852-7550
3. Optional/Additional Notification Contact Phone Numbers:
• South San Joaquin Irrigation District (SSJID), (209) 249-4600 • San Joaquin County Environmental Health Department,
front desk
(209) 468-3400
• California Department of Health Services (DHS), Stockton, CA (209) 948-7696 • California Department of Fish and Wildlife, Rancho Cordova, CA (916) 445-0045 • City of Manteca Police Department (209) 456-8100
• San Joaquin County Sherriff’s Department (209) 468-4400 • State of California Highway Patrol (209) 943-8600
• Regional Water Quality Control Board (RWQCB), (916) 464-3291
4. Provide the requested information to OES; which may include the following information:
• Name of person notifying OES and direct return phone number. • Estimated spill volume discharged (gallons).
• If ongoing, estimated spill discharge rate (gallons per minute). • Spill Incident Description:
▪ Brief narrative.
▪ On-scene point of contact for additional information (name and cell phone number). ▪ Date and time enrollee became aware of the spill.
▪ Name of sanitary sewer system agency causing the spill. ▪ Spill cause (if known).
• Indication of whether the spill has been contained.
• Indication of whether surface water is impacted.
• Name of surface water impacted by the spill, if applicable. • Indication of whether a drinking water supply is or may be impacted by the spill. • Any other known spill impacts.
• Spill incident location (address, city, state, and zip code).
CITY OF MANTECA
ENGINEERING DEPARTMENT
1001 W. CENTER STREET
MANTECA, CA 95337
Data on this map is intended for general use and informational purposes only. The City of Manteca does not warrant theaccuracy, quality, or completeness of data or suitability for any particular purpose. Information on this map is notintended to replace engineering, survey, or other primary research methods.
F. GUILLORY MAY 2023\\utopia\engr\PWENG\807 Maps & Surveys\807-09 Utilities\Sewer\Wall Maps\20230531_Sewer_Conveyance_System.mxd "/
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WWC-WW16
WWC-WW14
WWC-WW02
WWC-WW09
WWC-WW12
WWC-WW05
WWC-WW11
WWC-WW15
WWC-WW06
WWC-WW04
WWC-WW01
WWC-WW17
WWC-WW03
WWC-WW13
WWC-WW07
WWC-WW19 WWC-WW20
WWC-WW18
WWC-WW21
E SOUTHLAND RD E SOUTHLAND RD
MANTECA AV
E NORTH ST
W CENTER ST
W YOSEMITE AV
W YOSEMITE AV W YOSEMITE AV
NB HWY 99 NB HWY 99
NB HWY 99
NB HWY 99
NB HWY 99
SB HWY 99 SB HWY 99
SB HWY 99
SB HWY 99
EB HWY 120 ON RAMP
W ALAMEDA ST
ELM AV
NUT TREE CT
E LAKE AV
EB HWY 120 OFF RAMP
WB HWY 120 ON RAMP
PARK AV
E YOSEMITE AV E YOSEMITE AV
W WOODWARD AV
S VEACHAV
WB HWY 120
WB HWY 120
WB HWY 120 WB HWY 120 WB HWY 120
EB HWY 120
EB HWY 120
EB HWY 120 EB HWY 120 EB HWY 120
CHERRY LN
CAMINO DEL SOL
N UN OI N RD N UN OI N RD
E ALAMEDA ST
S AUST NI RD S AUSTIN RD S AUSTIN RD S AUST NI RD
E LOUISE AV E LOUISE AV
S MAIN ST
S MAIN ST
COTTAGE AV
S PRESCOTT RD S PRESCOTT RD
CRESTWOOD AV
PESTANA AV
TOWNE CENTRE DR
GARDEN CRI CLE DR W
OREGON ST
W LATHROP RD
S AUSTIN RD
SYCAMORE AV
SHELTERED COVE CI
WAWONA ST
WAWONA ST
W LOUISE AV
S MCK NI LEY AV
LOCUST AV
ROSEBERRY AV
WARD WY
LUPTON ST
FILLMORE ST
GARDEN CIRCLE DR E
W LOUISE AV W LOUISE AV
APRIL WY
TAHOE ST
PARK ST
ZURICH DR
EL CAPITAN AV
D ARCY PK
MAEHL DR
S PUEBLO DR
GOLF CI W
PIPESTONE ST
VAN RYN AV
S A RI PORT WY S A RI PORT WY
LAKESIDE DR
NORTHGATE DR
NORTHGATE DR
EAGLE RIVER AV
JANET LN
S YOSEMITE AV
ALDWINA LN
WILLOW AV
NEVADA ST
GREENWICH DR
PARKWOOD DR
S SHAWNEE WY
SHEPARD WY
BIZZIBE ST
SEBASTIAN LN
BIRCHWOOD ST
MACEDO ST
FISHBACK RD
EKINS LN
YVONNE AV
OL VI EWOOD AV
LOVELL WY
N POWERS AV
ROCKY HARBOR RD
COWELLAV
S POWERS AV
NEHEMIAH DR
S UNION RD
N EL RANCHO CI
DIAMOND OAK WY
CRUZ ST
ANDOVER WY
SONORA AV KENT ST
ARMSTRONG DR
GOLF CI E
BINGHAM LN
SWALLOW DR
GRAPEVINE PL
P NI ECREST ST
GARDEN GATE DR
MAPLE HOLLOW LN
EDYTHE ST
BELLA TERRA DR
TANNEHILL DR
SNYDER ST
EMERALD PL
CANVASBACK LN
NORD CI PL
HOYT LN
MURIETTA WY
CORK OAK LN
SHORELINE DR
AGATE AV
LODE ST
NORMAN DR
ELLIS LN
BLUSH ST
CLAREMONT DR
DODY DR
MIWOK LN
OLEANDER AV
NANA PL
CAMPHOR ST
HALF DOME DR
DANBURY PL
DANIELS ST
DANIELS ST
MCKEE BL
N FREMONT ST
SILVERADO DR
DILIP DR
AKSLAND DR
WINTERS DR
CROM ST
VERAM ONTE AV
EXETER DR
SEQUOIA AV
EMP RE I AV
SAPPHIRE WY JASON ST
S UNION RD
E EL RANCHO CI
JASPER ST
J GS I AW AV
BUENA VISTA DR
MERRIMAC ST
TRINITY ST
SPRINGT MI E AV
SUGAR CREEK LN
SLALOM DR
MARIE AV
CEDAR WY
KUMARA ST
SPRINGCREEK WY
MEMORIAL LN
INYO AV
VIRGINIA ST
POLK ST
GRAFTON ST
VICTORIAN TR
SB I5
SB I5 SB I5
SB I5
ROTELLI ST
MARIN ST
CHIMES ST
E INDUSTRIAL PARK DR
LONDON AV
THOMSEN RD
MISSION R DI GE DR
HASTINGS DR
ENCHANTMENT DR
BROOKDALE WY
AUTUMN RAIN DR
JADE PL
MARION ST
S NAVAJO WY
PEACH AV
S FREMONT ST
BELMONT PL
SIERRA MAR RD
DEVONSHIRE AV
BOX CAR DR
BREAK AV
CAMELOT DR
SIERRA ST
LOVEJOY AV
STOCKTON ST
MADELENA LN
EVA DR
ARGONAUT ST
SHAEFER ST
NOBLE ST
EMORY OAK PL
VIN ROSE WY
VILLA TICINO DR
SOMOA LN
PR MI ITIVO LN
BLOSSOM DR
BLOOMINGDALE ST
S EL RANCHO CI
HEARTLAND DR
N VEACH AV
S ARAPAHO WY
WHISKEY ST
E WOODWARD AV E WOODWARD AV
STEWART ST
LEXNI GTON AV
SAYBROOK ST
W JOSEPH RD
S LI VERBROOKPL
MINGO WY
PICADILLY WY
DAISYWOOD DR
PLEASANT DR
SWAN DR
LANGUM WY
GOLD COAST RD
SHADOWBROOK LN
ADOBE WY
SOLE VILLA LN
ROSE LN
SILTSTONE AV
GOLDEN SPIKETR
MICHIGAN AV
DEERWOOD AV
PARKVIEW ST
MIEL ST
HILL ST
PALOMINO ST
ASHBRIDGE LN
INDEPENDENCE AV
N AIRPORT WY N AIRPORT WY
N AIRPORT WY
SHERWOOD PL
BON TI A DR
EDWARD AV
ARROWSMITH DR
SPRAGUE ST REDWOOD AV
SAFFRON DR
N VASCONCELLOS AV
TIOGA WY
PRIMROSE AV
COBBLER ST HEARTHSONG DR
BRIDGETON AV
TRAILWOOD AV
MARINO WY
E EDISON ST
MOFFAT BL
MOFFAT BL
RUSS OS DR
BLUEBIRD ST
ROSEDALE WY
MT DEW AV
DIABLO VIEW DR
CARMEL AV
SLATE ST
SERENO DR
MISONE ST
OPEN RANGE AV
PINK MUHLY DR
MYLNAR AV
DIANE DR
SAGE SPARROW AV
W LATHROP RD
W LATHROP RD
NICKLAUS WY
N MA NI ST
N MAIN ST
SPARROWHAWK ST
BANDON LN
JOHNSON FERRY RD
CYPRESS ST
LION DR
TOWNSEND AV
SUNOL ST
QUEENSLAND AV
NB I5
NB I5 NB I5
NB I5
AGUSTA DR
HAC EN I DAAV
HUNT RD
HARVEST LN
JEWEL ST
RED FOX DR
H ST
KIRKWOOD AV
GALLERIA DR
DENALI DR
HUNT NI GTON PL
BEWICK DR
ASHFORD AV
CHEYENNE ST
COLUMBUS DR
MADRONE ST
SUN HAVEN PL
RIVER BEND DR
MARTHA ST
CRANE ST
WARREN AV
PAJARO AV
LUCIO ST
NEWHALEN ST
CLIFFORD DR
TESORO DR
WAYFARER AV
PAGOLAAV
ABBY PL
RUBICON AV
S ASH LN
B RD I EI AV
LINDEN WY
HOLLAND LN
ACACIA AV
PIRATES COVE LN
SAND LN
MONTICELLO LN
N GARFIELD AV
GREENLEAF ST
WELLINGTON AV
FIFTH ST
YOLO ST
BISHOP ST
GR SUTTER ST
EENBR EI R AV
PEABODY AV
GENEVA WY
W WETMORE ST
SHADY M LI L WY
PEREGRINE ST
TOWER ST
CAMBRIDGE DR
MALIBU DR
BELLCHASE DR
SWEETBR EI R PL
MATADOR WY
USAX RR SPUR LINE
DAVIS ST
BERMUDA LN
SILHOUETTES ST
CHANNEL D R
LORENE AV
S MANTHEY RD
PECAN HOLLOW WY
COLONIAL TR
MIRASSOU DR
E MOHICAN DR
CHIANTI LN
LELAND ST
RED PHEASANT LN
CHIAVARI WY
CRESCENT PARK CI
SNOWGOOSE LN
S GRANT AV
S OAK S T
ABEJA LN
TANAGER AV
CATALINA PL
GLEN ABBEY DR
COBBLE CREEK WY
PIERRE DR
TIDAL ST
PINEWOOD DR
FLORES AV
P NI E VALLEY DR
FINCHWOOD DR
FRANK AV
TIBIDABO ST
PEARL PL
MERCED WY
CENTRAL PACIFIC ST
LA FEY AV
TOP AI RY DR
BHARVANI AV
DAWN DR
BOULDER AV
SISKIYOU LN
SILVER CREEK DR
PORTIFINO ST
JULIE LN
LAUREL DR
LOGANBERRY WY
AVALON LN
TESTAROSSA ST
MANOR LN
GOLDEN POND DR
IMAGE DR
JUNCTION DR
LONG BARN DR
MARCELINE DR
VILLAGE AV
SUISUN AV
LOCOMOTIVE ST
E LOUISE AV
E LOUISE AV
SAN JUAN ST
JOAQUIN ST
BROOKHURST BL
E NORTHGATE DR
BRAMBLEWOOD AV
N AUST NI RD
SPRINGFIELD DR
E CENTER ST
ARISTA DR
STRAWBERRY GLEN ST
IVY WY
OLDHAM PL
DORONA LN
CHERRY OAK LN
LANDRETH LN
DAWSON CREEK ST
FOUNTAIN SQUARE AV
MERIDIAN ST
SPR NI G MEADOW DR
FIR ST
PAOLA LN
STREAM AV
O ST
SH RI LEY AV
SEDONA LN
TAPESTRY ST
CRESCENT AV
FOREST LN
PHILLIPS DR
FEATHER RD
LUGANO WY
RIEGER DR
WATERMAN AV
BAYFRONT ST
AZALEA DR
MARY AUGUSTA ST
MAVERICKS LN
WINDGATE DR
SHADOW BERRY DR
THOMAS ST
FIRE POWER AV
PARAMOUNT LN
MUL BER R Y CI
BELLA PL
MONO ST
E LATHROP RD E LATHROP RD
MAYWOOD AV
POSTMA ST
DAIRY LN
ANCESTRY ST
EASY ST
BRANDYWINE ST
WENTWORTH AV
MERCEDES AV
STEPHANIE ST
L SI A LN
SALMON LN
VINAL DR
AVON ST
KINGSLEY LN
DELTAVIEW ST
ENGLEWOOD AV
SNAPDRAGON WY
STEPHEN ROBERT LN
CHATEAU LN
COBBLESTONE LN
EASTWOO D AV
BRISTOW ST
TURIN AV
TIDEWATER PH
T DI EWATER PH
NOTTINGHAM DR
BROOKFIELD AV
WOODBINE AV
GIBRALTER DR
COIT ST
MERLIN LN
HILARY WY
TOSCANO DR
LAVENDER ST
COVERED BRIDGE WY
BERNT AV
PION E ER AV
DORRINGTON LN
DERBY LN
BROOK VIEW LN
BLAUSANNE LN
XANTHE WY
ANDERS AV
LARKMONT ST
V CI TORY AV
BOUNTY PL
WHEAT F EI LD ST
KELLEY DR
SANGRIA LN
STAGE COACH DR
SPAR ST
HEATHRIDGE ST
SH MA I AV
SANDP PI ERLN
DYER AV
RED RIBBONS LN
PLACERAV
SCHADECK ST
MAMMOTH DR
MAURICE COTTON DR
AMBROSE DR
DOXEY DR
MADISON GROVE DR
RAIL WY
WIMBLEDON WY
GARZAS ST
CAMBRA LN
FERRY LAUNCH AV
COLLINS ST
DESIO LN
PASADO AV
LAMBDIN ST
LA SCALA WY
QUARTZ WY
SHADY OAK ST
GRAND PR XI AV
GRAN TE I LN
CALESETTA PL
NICOL WY
MATTERHORN ST
ABBEY MIST ST
MAXWELL LN
NAPA VALLEY AV
ORME LN
SAND CASTLE WY
SUNFISH DR
SUGAR PINE DR
EL DORADO ST
ORGULLO LN
ORLANDO LN
WEDGEWOOD WY
CHESTNUT HILL DR
PANTERAAV
BRAVERYAV
ARNELL PL
CHURCHER DR
GINGER WY
OLD GLORY WY
SALLIE O DR
CHAMPAGNE LN
ABERCORN ST
CEDAR VALLEY DR
MAGRATH AV
N ST
DEL WEBB BL
SEPHOS ST
SHER DI AN AV
BROOKSIDE DR
SOLOTHURN WY
BASIN LN
AVO WY
MONFERRATO ST
WARF EI LD RD
RYH NI ER LN
ANACAPRI DR
MAPLE VALLEY ST
SNOWCAP DR
AUTUMN OAKS ST
STERLING PL
TODD ST
UNITED ST
QUINCY AV
FLEABANE LN
LOTTIE WY
HIGTON ST
DONOVAN ST
SYRACUSE LN
VETERAN ST
STEVEN PL
VALA SI LN
EL PORTAL AV
D LI L WY
CLAIM STAKE AV
BOLTON LN
VESUVIO ST
TORO LN
PENDRAGON ST
PASSAGES ST
MILANO ST
SPRUCE LN
SANCTUARY WY
RESERVE ST
SILVERTRAIL LN
PORT WASHINGTON ST
CABERNET LN
LANSING ST
PIEDMONT DR
AZEVEDO AV
MICHELETOS WY
ISIDORE WY
NI LAND PASSAGE WY
ANTIGUA LN
BROCCHINI LN
PINE ST
DAY LILY AV
BLACKOAK DR
SALENTO AV
SANDRA ST
AL FONSECA LN
FALMO
I C HT
SHEARWATER RD
DOS REIS RD
OSPREY DR
EDGEBROOK LN
GLENOAKS ST
FRIENDLY ST TULE AV
HYAN NI S I C
CATMINT ST
PATRICIA PL
DERRICK AV
VOLANTI DR
JONQUIL DR
BENZINGER RD
GENOA DR
UPSTREAM DR
PELUSA LN
GRANITE AV
BARBARA TERRY BL
COLD SPRINGS ST
MOSCATO DR
MARCH DR
SHADY PINES ST
PATRIOT ST
J ST
GINO LUCA ST
TRULYN AV
PEAR TREE ST
POPLAR AV
BASIL DR
SUNDANCE AV
MAIDEN GRASS AV
MONTE CASA ST
SIERRA CREEK DR
FINCHWOOD LANDING LN
MOYA RD
ALBA ST
RIVA TRIGOSO DR
COMMERCE AV
LANCASTER DR
FREESTONE RD
ALMOND AV
HOMESTEAD AV
NUTMEG LANDING LN
S COTTAGE AV
SOUZA BL
BESSEMER AV
N WALNUT AV
RAVINE LN
CAMILLA ST
GARY OWENS ST
OAK ST
BEDFORD LN
ARBOR BROOK DR
STOKER WY
S HWY 99 E FR RD
RINA DR
ASPEN DR
EMIGRANT ST
SAGEWOOD DR
CONTROLLATA ST
BALLENA ST
BRIDEWELL AV
EUCALYPTUS ST
TERN DR
GINA ST
W WOODWARD AV
FOUR CORNERS CT
W ATHERTON DR
W ATHERTON DR
SADLER OAK DR
ALPINE AV
MONACO DR
ETTLE ST
SANZA RD
DOUGLAS FIR DR
OLIVINE AV
FOXFIRE DR
DAFFOD LI H LI L ST
LIMESTONE AV
VANDERBILT CI
CLEARW ATER CREEK BL
TOY CT
SOUTH ST
W WOODWARD AV
MONTE ORO ST
RED BARN PL
CORWIN DR
CHENIN BLANC DR
S MANTHEY RD
S MANTHEY RD
W NORTH ST
ANN MARIE DR
BUTTERCUP PL
MARISOL DR
BRENDA LEE DR
JESSIE AV
SHADYWOOD AV
E HWY 120
MORNING BROOK DR
STE E L
PE RUN LN
KOMENICH DR
ORCHARD WY
LINDA JEAN LN
FRANCES ST
CHABLIS WY
MUIRCT
SEVENTH ST
VICTORIA DR
ALYSSA PL
GLEN ECH O NL
LAURETO ST
GANTRY DR
LILY LN
BLAIR CT
CORMORANT ST
INDUSTRIAL PARK DR
THIRD ST
IRON HORSE TR
GREENV EI W PL
FIFTH (PVT) ST
KLONDIKE WY
HYDE PARK LN
GAROLD LN
L ST
E MADRUGA RD
CALIFORNIA AV
MIKESELL ST
VASCO ST
DECKER AV
ROOSEVELTAV
WEMBLEY WY
EVA CT
R VI ER BERRY DR
ALEX WY
COMO DR
PICO ST
A
MA DORCI
ALGHERO DR
I ST
SHORTLA ND CI
K ST
DANA CT
LAUR TI SON LN
PILLSBURY RD
SPARTAN WY
DRY CREEK PL
S LINCOLN AV
MCKINLEY AV MCKINLEY AV
HEARTH DR
S HARLAN RD
S HARLAN RD
PRIMAVERAAV
STONUM LN
BING ST
WILMA CT
SPRECKELS AV
CRUTCHFIELD LN
PEBBLE WY
WINDSOR PL
ARIES PL
PARR LN
LEO ST
NORTHWOODS AV
KEITH WY
VERDA CT
TULIP TREE WY
E SEDAN AV
STEWART RD
ELENI LN
SCEN CI PL
LAZY LN
CRESPI ST
OPAL ST
CAROL ST
ORE CLAIM TR
PASTURE AV
DEER GRASS DR
PIXLEY CT
LI FESTYLE ST
TAFT AV
S UNION RD
BACARRA ST
HARVEST MILL DR
SNEAD CT
MURO LN
ALBANY ST
RACCOON VALLEY DR
M CNARY CI
JOSHUA ST
B AS S PRO DR
RALPH AV
W MOSSDALE RD
S WOODWARD AV
SAINT ANDREW ST
CAVALRY AV
FORTY NINER TR
SIXTH ST
BOSCO LN
S KRAM DR
K NI GWOOD AV
GOLD NUGGET TR
SHILLING AV
PEPPER TREE LN
DONATELLO ST
BELLE GLADE LN
MAPLE GROVE AV
SHOPS LN
BUD PL
SUNRISE PL
TOWN SQ
ALFONSO LN
COOK LN
RUBY PL
CACHE AV
LOON ST
PARKS DI E AV
EBBETTS AV
PIPITST
RAIL ST
HANSEN AV
TALC ST
VALOR DR
S NI HERITANCE W Y
MARTY DR
SIESTA LN
DUOMO WY
TRIBECAAV
TOPAZ CT
TITLEIS T WY
READING WY
CORAL CT
PORT ST
GOLD ST
SANTONA ST
CHARLES AV
BACK BAY DR
GOODALE CT
GILEAD AV
DIAMOND DR
PERIMETER DR
HEMLOCK AV
SARATOGA ST
AVOCET DR
SUMMIT WY
BUTTON AV
E LATHROP RD E LATHROP RD
VERNAL ST
TKI I AV
HISTORICAL PLAZA WY
LA PAZ ST
BAJO ST
TIMBER LN
STONEBRIDGE LN
DONNER WY
G ST
PINNACLE ST
WIDMER LN
BLEEKER ST
TOYON AV
MATHAR DR
CO C OMO PL
BALZO ST
WYNYARDCI
INCA ST
HORNFELS AV
S HWY 99 W FR RD
S HWY 99 W FR RD
VERDA DR
TASCA LN
BURTON WY
LAGOON WY
ARGILLITE AV
SAGUARO LN
N SHERMAN AV
APPLELEAF LN
N GRANT AV
CALCITE AV
TINNIN RD
N MAPLE AV
RAYLOW AV
S HWY 99 W FR
CARNEGIE CT
ROSAZZO LN
SLOUGH AV
E JEANE RD
E WETHERBEE AV
E WILLOW AV
LA MESA WY
TOY ST
EAGLE LN
RANCHO WY
LIVERPOOL CT
FIORE W Y
ETON WY
W LI D LILAC AV
GROVE AV
S OLEANDER AV
CAM BORNE DR
CROCKETT ST
GOLDFINCH WY
SOMERVILLE RD
GLADIOLA LN
E PEACH AV
ORE ST
E ATHERTON DR
E ATHERTON DR
ST DOMINICS DR
FERNDALE ST
S SHERMAN AV
ZALMAN LN
LAUR E LWO
I C D O
MELLON AV
PIN OAK LN
WILLOW BND
TANOAK ST
CRIMSON LN
SACRAMENTO ST
E WOODWARD AV
CARNABY RD
GOLDPOPPY ST
RANGER ST
LATERALAV
HAWES ST
STAR TULIP ST
MUMBERT DR
LANDSEND CI
HOMETOWN LN
SHASTA ST
CLARENDON AV
LASSEN AV
WILD GINGER WY
S GARFIELD AV
DEBBRA WY
EAGLE LN
W QUINTAL RD
ALBARINO AV
NOEL LN
PLUMAS WY
SUZ EI Q LN
TAPPANPL
AMY WY
RIDGECREST DR
AMERICANA ST
BEARDSLEY AV
ADAMS LN
TRESTLE PT
ALBRECHT ST
FRAUENFELD ST
MAGNOL AI LN
BUCHANON LN
BANISTER LN
NEW WELL AV
PIONEER AV
E GRADY DR
MEDFORD AV
FERN DELL LN
OLIVER WY
MAYAV
CORPSMAN ST
SAVORY DR
PISMO DR
E D ARCY PK
MONASTERY DR
DELICATO DR
SILVERWOOD AV
MANHATTAN ST
ANDREW LN
ENDURE AV
MITCHELL LN
WESTPORT ST
HAPPY VALLEY LN
LEVANTO WY
RIVER ISLANDS PK
SKI BEACH ST
TINSLEY ST
RANDALL WY
SANTINI AV
TERRA PARK LN
LUNA B ELLA LN
BELLA LAGO WY
RENAISSANCE AV
HULSEY WY
CHESTNUT GROVE DR
W EL RANCHO CI
CLUBHOUSE WY
CHESTNUT AV
MEADOW WY
BIRCH RUN WY
YORKTOWN LN
HARDING AV
EVERGREEN WY
TREV NI O AV
PLUMER AI LN
CHARDONNAY WY
DEERPARK DR
GAIL DR
CAPISTRANO ST
SLAYTON DR
DALIA LN
STANFORD CX
CAROGOLD LN
CHRISTOPHER WY
BRENNAN LN
SHADY GROVEST
COTTAGE CT
ZOE LN
S OLD HARLAN RD
WB HWY 120 OFF RAMP
SPALDING WY
ESTANCIA ST
PRAIRIE DUNES ST
NUSHAKE WY
HBS WY 99ONRAMP
W EDISON ST
ASH RENEE ST
LIBBY LN
JASMINEHOLLOW DR
MILESTONE DR
FRANKLIN ST
S AIRPORT WY
FERN MEADOW AV
S SUMMER HOME DR UP RR SPUR LINE
E WILLIAMSON RD
STANFORD XG
PHOENIX DR
SAWTOOTH ST
COOPER DR
UP RR SPUR LINE
HALMAR LN
NB HWY 99 ON RAMP
SWALLOW TAIL LN
CARSON AV
SUNFLOWER DR
E NORTHLAND RD
ELEANOR LN
AVON AV
S IDEAL PK
S SOUTHLAND CT
WINCHESTER DR
RAPALLO WY
GOLDEN VALLEY PK GOLDEN VALLEY PK
COMMERCE CT
COBBLECREEK ST
VOLPAIA P L
GRAPPA ST
SB HWY 99 OFF RAMP
S BUS NE I SS PARK CT
NB HWY 99 OFF RAMP
EB HWY 120 OFF RAMP
SBHWY 99 OFF RAMP
TACTICAL WY
WATSON AV
PAC FI CI RD
N HWY 99 E FR RD
S M TC I HELL RD
LAKESIDE AV
MOHR CI
S TINNIN
S VASCONCELLOS AV
E GLA CIER ST
MILO CANDINI DR
E JAMESON RD
WB HWY 120 ON RAMP
CARNEGIE ST
GIANNA LN
SB HWY 99 ON RAMP
S RINGSTROM DR
PREAKNESS CI
QUEIROLO RD
NB HWY 99 OFF RAMP
E FRENCH CAMP RD
E FRENCH CAMP RD
DUPONT CT
E QUINTAL RD
CONRAD ST
TESLA DR
S COMCONEX RD
SB HWY 99 OFF RAMP
NB I5 ON RAMP
NBHWY 99 OFF RAMP
SB I5 OFF RAMP
MURPHY PK
LAUREL PARK CI
S A RI PORT WY
W MANTHEY RD
JEFFERSON WY
YOSEMITE CT
W KLO RD
E COELHO RD
E WETMORE ST
SWANSON RD
WB HWY 120 ON RAMP
EB HWY 120 ON RAMP
SHIDELER PK
WB HWY 120 OFF RAMP
EB HWY 120 OFF RAMP
WB HWY 120 OFF RAMP
SB I5 ON RAMP
EB HWY 120 ON RAMP
W FREWERT RD
UP RR SPUR LINE
NB I5 OFF RAMP
E VIERRA RD
E BRONZAN RD
CASTELLINA WY
TE R RACINA CI
E VERIGAN RD
EB HWY 120 OFF RAMP
INTERMODAL WY
W MANILA RD
E BRUNSWICK RD
E FIG AV
E LOVELACE RD
S TINNIN RD
S CASTLE RD
S HART LN
APLICELLA CT
WB HWY 120 ON RAMP
UP RR SPUR LINE
S CALLA DR
E PALM AV
E GRAVES RD
HOWLAND RD
DE LIMA RD
GREENPZ
PARKCRES T CI
N
WASTEWATER CONVEYANCE SYSTEM
MAY 2023
×
LEGENDWASTEWATER - GRAVITY MAINPIPE SIZE (INCHES)
UNKNOWN234681011121518212427303642485460
WASTEWATER - FORCE MAINPIPE SIZE (INCHES)
UNKNOWN3468121824
ä[ WASTEWATER STATION
"/ WASTEWATER FLUSH STATION
CITY LIMITPARCELS
0 0.5 1 0.25
MILES
Figure 3: Existing SewerCollection
CITY OF MANTECA
ENGINEERING DEPARTMENT
1001 W. CENTER STREET
MANTECA, CA 95337
Data on this map is intended for general use and informational purposes only. The City of Manteca does not warrant theaccuracy, quality, or completeness of data or suitability for any particular purpose. Information on this map is notintended to replace engineering, survey, or other primary research methods.
F. GUILLORY MAY 2023\\utopia\engr\PWENG\807 Maps & Surveys\807-09 Utilities\Storm\Wall Maps\20230531_Stormwater_System_42x48.mxd !2!
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MANTECAAV
E NORTH ST
W CENTER ST
W YOSEMITE AV
W YOSEMITE AV W YOSEMITE AV
SAND BAR WY
NB HWY 99 NB HWY 99
NB HWY 99
NB HWY 99
NB HWY 99
SB HWY 99 SB HWY 99
SB HWY 99
SB HWY 99
SB HWY 99
EB HWY 120 ON RAMP
W ALAMEDA ST
ELM AV
NUT TREE CT
E LAKE AV
EB HWY 120 OFF RAMP
WB HWY 120 ON RAMP
BARBARA TERRY BL
PARK AV
E YOSEMITE AV E YOSEMITE AV
W WOODWARD AV
SVEACHAV
WB HWY 120
WB HWY 120
WB HWY 120 WB HWY 120
EB HWY 120
EB HWY 120
EB HWY 120 EB HWY 120
CHERRY LN
CAMINO DEL SOL
N UN OI N RD N UN OI N RD
E ALAMEDA ST
E HWY 120
S AUSTIN RD
S AUST NI RD S AUST NI RD
S CASTLE RD
OLD WHARF PL
E LOUISE AV E LOUISE AV
S MAIN ST
S MAIN ST
COTTAGE AV
S PRESCOTT RD
CRESTWOOD AV
PESTANA AV
TOWNE CENTRE DR
GARDEN CRI CLE DRW
OREGON ST
W LATHROP RD
S AUST NI RD
SYCAMORE AV
LAKESIDE DR
WAWONA ST
WAWONA ST
S MCK NI LEY AV
LOCUST AV
SB I5
SB I5
SB I5
SB I5
ROSEBERRY AV
WARD WY
LUPTON ST
FILLMORE ST
GARDEN CIRCLE DR E
W LOUISE AV
W LOUISE AV
APRIL WY
TAHOE ST
PARK ST
ZURICH DR
EL CAPITAN AV
D ARCY PK
MAEHL DR
S PUEBLO DR
GOLF CI W
VAN RYN AV
S A RI PORT WY S A RI PORT WY
NORTHGATE DR
NORTHGATE DR
EAGLE RIVER AV
JANET LN
E ROTH RD
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NB I5
NB I5
NB I5
S YOSEMITE AV
ALDWINA LN
WILLOW AV
NB I5 OFF RAMP
NEVADA ST
PARKWOOD DR
S SHAWNEE WY
SHEPARD WY
BIZZ BI E ST
BIRCHWOOD ST
MACEDO ST
FISHBACK RD
EKINS LN
YVONNE AV
TIDEWATER PH
OL VI EWOOD AV
LOVELLWY
N POWERS AV
ROCKY HARBOR RD
COWELLAV
S POWERS AV
NEHEMIAH DR
S UNION RD
N EL RANCHO CI
DIAMOND OAK WY
CRUZ ST
ANDOVER WY
SONORA AV
KENT ST
ARMSTRONG DR
GOLF CI E
SWALLOW DR
GRAPEVINE PL
P NI ECREST ST
GARDEN GATE DR
MAPLE HOLLOW LN
EDYTHE ST
N L NI COLN AV
BELLA TERRA DR
TANNEHILL DR
SNYDER ST
EMERALD PL
CANVASBACK LN
NORD CI PL
HOYT LN
MURIETTA WY
CORK OAK LN
SHORELINE DR
AGATE AV
LODE ST
NORMAN DR
ELLIS LN
BLUSH ST
CLAREMONT DR
DODY DR
MIWOK LN
OLEANDER AV
NANA PL
CAMPHOR ST
HALF DOME DR
DANBURY PL
DANIELS ST
DANIELS ST
MCKEE BL
BRIDGEPORT LN
N FREMONT ST
SILVERADO DR
DILIP DR
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W NI TERS DR
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VERAMONTE AV
EXETER DR
SEQUOIA AV
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SAPPHIRE WY JASON ST
S UNION RD
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JASPER ST
J GS I AW AV
BUENA V SI TA DR
MERRIMAC ST
TRINITY ST
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SUGAR CR EEK LN
SLALOM DR
MAR EI AV
CEDAR WY
KUMARA ST
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MEMORIAL LN
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VIRGINIA ST
POLK ST
GRAFTON ST
VICTORIAN TR
ROTELLI ST
MARIN ST
CHIMES ST
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THOMSEN RD
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BROOKDALE WY
AUTUMN RAIN DR
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WHISKEY ST
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DAISYWOOD DR
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SPRAGUE ST
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PRIMROSE AV
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TRAILWOOD AV
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BLUEBIRD ST
ROSEDAL E WY
MT DEW AV
DIABLO VIEW DR
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SLATE ST
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LAUREL DR
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JOAQUIN ST
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BRAMBLEWOOD AV
N AUST NI RD
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DORONA LN
CHERRY OAK LN
LANDRETH LN
DAWSON CREEK ST
FOUNTAIN SQUARE AV
MERIDIAN ST SPR NI G MEADOW DR
FIR ST
PAOLA LN
STREAM AV
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SH RI LEY AV
SEDONA LN
TAPESTRY ST
CRESCENT AV
FOREST LN
PHILLIPS DR
FEATHER RD
RIEGER DR
WATERMAN AV
BAYFRONT ST
AZALEA DR
MARY AUGUSTA ST
MAVERICKS LN
WINDGATE DR
SHADOW BERRY DR
THOMAS ST
FIRE POWER AV
PARAMOUNT LN
MU LBER RY CI
BELLA PL
MONO ST
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POSTMA ST
DAIRY LN ANCESTRY ST
EASY ST
WENTWORTH AV
MERCEDES AV
STEPHANIE ST
L SI A LN
VINAL DR
AVON ST
NOSTALGIA ST
KINGSLEY LN
DELTAVIEW ST
ENGLEWOOD AV
SNAPDRAGON WY
STEPHEN ROBERT LN
CHATEAU LN
COBBLESTONE LN
EASTW OOD AV
BRISTOW ST
TURIN AV
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NOTTINGHAM DR
BROOKFIELD AV
WOODBINE AV
GIBRALTER DR
COIT ST
MERLIN LN
HILARY WY
TOSCANO DR
LAVENDER ST
COVERED BRIDGE WY
BERNT AV
PION E ER AV
DORRINGTON LN
DERBY LN
BROOK VIEW LN
BLAUSANNE LN
XANTHE WY
ANDERS AV
LARKMONT ST
V CI TORY AV
WHEAT FIELD ST
KEL L EY DR
SANGRIA LN
STAGE COACH DR
SPAR ST
HEATHRIDGE ST
SH MA I AV
SANDPIPER LN
DYER AV
RED RIBBONS LN
PLACER AV
SCHADECK ST
MAMMOTH DR
MAURICE COTTON DR
AMBROSE DR
DOXEY DR
MADISON GROVE DR
RAIL WY
WIMBLEDON WY
GARZAS ST
CAMBRA LN
FE RRY LAUNCH AV
COLLINS ST
DESIO LN
PASADO AV
LAMBDIN ST
LA SCALA WY
QUARTZ WY
SHADY OAK ST
GRAND PRIX AV
GRANITE LN
CALESETTA PL
NICOL WY
MATTERHORN ST
MAXWELL LN
NAPA VALLEY AV
ORME LN
SAND CASTLE WY
SUNFISH DR
SUGAR PINE DR
EL DORADO ST
ORGULLO LN
ORLANDO LN
WEDGEWOOD WY
CHESTNUT HILL DR
PANTERAAV
BRAVERYAV
ARNELL PL
CHURCHER DR
GINGER WY
OLD GLORY WY
SALLIE O DR
CHAMPAGNE LN
ABERCORN ST
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MAGRATH AV
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DEL WEBB BL
SEPHOS ST
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BROOKSIDE DR
SOLOTHURN WY
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ANACAPRI DR
MAPLE VALLEY ST
SNOWCAP DR
AUTUMN OAKS ST
STERLING PL
TODD ST
UNITED ST
QUINCY AV
FLEABANE LN
LOTTIE WY
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VETERAN ST
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VESUVIO ST
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CABERNET LN
LANSING ST
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MICHELETOS WY
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BROCCHINI LN
PINE ST
DAY L LI Y AV
GEORGE ST
SANDRA ST
AL FONSECA LN
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FRIENDLY ST TULE AV
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PATRICIA PL
DERR CI K AV
VOLANTI DR
JONQUIL DR
BENZINGER RD
GENOA DR
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PELUSA LN
GRANITE AV
COLD SPRINGS ST
MOSCATO DR
MARCH DR
SHADY PINES ST
PATRIOT ST
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GINO LUCA ST
TRULYN AV
PEAR TREE ST
POPLAR AV
JOANN ST
BASIL DR
SUNDANCE AV
MAIDEN GRASS AV
MONTE CASA ST
SIERRA CREEK DR
F NI CHWOOD LANDING LN
MOYA RD
ALBA ST
RIVA TRIGOSO DR
COMMERCE AV
LANCASTER DR
FREESTONE RD
ALMOND AV
HOMESTEAD AV
NUTMEG LANDING LN
S COTTAGE AV
SOUZA BL
BESSEMER AV
N WALNUT AV
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CAMILLA ST
GARY OWENS ST
OAK ST
BEDFORD LN
ARBOR BROOK DR
STOKER WY
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ASPEN DR
EMIGRANT ST
SAGEWOOD DR
CONTROLLATA ST
BALLENA ST
BRIDEWELL AV
EUCALYPTUS ST
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W ATHERTON DR
W ATHERTON DR
SADLER OAK DR
ALPINE AV
MONACO DR
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FOXFIRE DR
DAFFOD LI H LI L ST
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E JAMESON RD
INCA ST
HORNFELS AV
S UN OI N RD
S HWY 99 W FR RD
S HWY 99 W FR RD
VERDA DR
TASCA LN
BURTON WY
ARGILLITE AV
SAGUARO LN
N SHERMAN AV
N GRANT AV
CALCITE AV
N MAPLE AV
RAYLOW AV
CARNEGIE CT
ROSAZZO LN
E JEANE RD
E WETHERBEE AVE WILLOW AV
LA MESA WY
TOY ST
EAGLE LN
RANCHO WY
FIORE WY
ETON WY
GROVE AV
S OLEANDER AV
CAM BORNE DR
CROCKETT ST
GOLDFINCH WY
GLAD OI LA LN
E PEACH AV
ORE ST
E ATHERTON DR
FERNDALE ST
S SHERMAN AV
ZALMAN LN
LA U RELWOO D CI
MELLON AV
PIN OAK LN
WILLOW BND
TANOAK ST
CR MI SON L N
E WOODWARD AV
CARNABY RD
GOLDPOPPY ST
RANGER ST
LATERALAV
HAWES ST
STAR TULIP ST
MUMBERT DR
HOMETOWN LN
SHASTA ST
CLARENDON AV
LASSEN AV
S GARFIELD AV
DEBBRA WY
W QUINTAL RD
ALBAR NI O AV
NOEL LN
PLUMAS WY
SUZ EI Q LN
TAPPANPL
AMY WY
RIDGECREST DR
AMERICANA ST
BEARDSLEY AV
ADAMS LN
TRESTLE PT
ALBRECHT ST
FRAUENFELD ST
MAGNOL AI LN
BUCHANON LN
TINNIN RD
BANISTER LN
NEW WELL AV
PIONEER AV
E GRADY DR
MEDFORD AV
FERN DELL LN
OLIVERWY
MAYAV
CORPSMAN ST
SAVORY DR
PISMO DR
E D ARCY PK
MONASTERY DR
DELICATO DR
SILVERWOOD AV
MANHATTAN ST
ANDREW LN
SOUTHLAND RD
ENDURE AV
MITCHELL LN
WESTPORT ST
HAPPY VALLEY LN
LEVANTO WY
RIVER ISLANDS PK
SKI BEACH ST
TINSLEY ST
RANDALL WY
SANTINI AV
TERRA PARK LN
BELLA LAGO WY
RENAISSANCEAV
HULSEY WY
CHESTNUTGROVE DR
W EL RANCHO CI
CLUBHOUSE WY
CHESTNUT AV
MEADOW WY
BIRCH RUN WY
YORKTOWN LN
HARDING AV
EVERGREEN WY
USAX RR SPUR LINE
TREVINO AV
PLUMERIA LN
CHARDONNAY WY
DEERPARK DR
GAIL DR
CAPISTRANO ST
SLAYTONDR
DALIA LN
STANFORD CX
CAROGOLD LN
CHRISTOPHER WY
BRENNAN LN
SHADY GROVEST
E GRAVES RD
COTTAGE CT
USAX RR SPUR LINE
ZOE LN
S OLD HARLAN RD
WB HWY 120 OFF RAMP
SPALDING WY
ESTANCIA ST
PRAIRIE DUNES ST
NUSHAKE WY
SB HWY 99 ON RAMP
NB HWY 99 O N RAMP
W EDISON ST
ASH RENEE ST
LIBBY LN
JASMINEHOLLOW DR
MILESTONE DR
FRANKLIN ST
S AIRPORT WY
FERN MEADOW AV
S SUMMER HOME DR
UP RR SPUR LINE
E WILLIAMSON RD
STANFORD XG
PHOENIX DR
SAWTOOTH ST
COOPER DR
UP RR SPUR LINE
NB I5 ON RAMP
HALMAR LN
NB HWY 99 ON RAMP
SWALLOW TAIL LN
CARSON AV
SUNFLOWER DR
E NORTHLAND RD
ELEANOR LN
AVON AV
S IDEAL PK
S SOUTHLAND CT
WINCHESTER DR
RAPALLO WY
GOLDEN VALLEY PK
GOLDEN VALLEY PK
COMMERCE CT
COBBLECREEK ST
VOLPAIA PL
GRAPPA ST
SB HWY 99 OFF RAMP
S BUS NE I SS PARK CT
EB HWY 120 OFF RAMP
SB HWY 99 OFF RAMP SB HWY 99 ON RAMP
TACTICAL WY
WATSON AV
PAC FI CI RD
N HWY 99 E FR RD
S M TI CHELL RD
ROTH RD
LAKESIDE AV
MOHR CI
S TINNIN
S VASCONCELLOS AV
E GLACIER ST
MILO CANDINI DR
WB HWY 120 ON RAMP
CARNEGIE ST
GIANNA LN SB HWY 99 ON RAMP
S RINGSTROM DR
PREAKNESS CI
QUEIROLO RD
NB HWY 99 OFF RAMP
SB I5 ON RAMP
DUPONT CT
NB I5 OFF RAMP
E QUINTAL RD
CONRAD ST
TESLA DR
S COMCONEX RD
SB HWY 99 OFF RAMP
NB I5 ON RAMP
NB HWY 99 OFF RAMP
SB I5 OFF RAMP
MURPHY PK
LAUREL PARK CI
JEFFERSON WY
YOSEMITE CT
W KLO RD
E COELHO RD
E WETMORE ST
SWANSON RD
WB HWY 120 ON RAMP
EB HWY 120 ON RAMP
SHIDELER PK
WB HWY 120 OFF RAMP
EB HWY 120 OFF RAMP
WB HWY 120 OFF RAMP
SB I5 ON RAMP
EB HWY 120 ON RAMP
W FREWERT RD
UP RR SPUR LINE
NB I5 OFF RAMP
E VIERRA RD
E BRONZAN RD
CASTELLINA WY
TERRACINA CI
E VERIGAN RD
EB HWY 120 OFF RAMP
INTERMODAL WY
W MANILA RD
E BRUNSWICK RD
E FIG AV
E LOVELACE RD
S TINNIN RD
S HART LN
APLICELLA CT
WB HWY 120 ON RAMP
UP RR SPUR LINE
S CALLA DR
S HWY 99 E FR RD
E PALM AV
HOWLAND RD
DE LIMA RD
SHELTERED COVE CI
GREENPZ
PARK CREST CI
SWT-006
SWT-001
SWT-008
SWT-009
SWT-011
SWT-010
SWT-012
SWT-002
SWT-013
SWT-005
SWT-007
SWT-003
SWT-004
SWT-014
SWT-015
SWT-016
SWT-017
SWT-020
N
STORMWATER CONVEYANCE SYSTEM
MAY 2023
0 0.5 1 0.25
MILES
LEGEND
SSJID
STORM WATER - GRAVITY MAINPIPE SIZE (INCHES)
UNKNOWN4681012151821242730333639424854606672
STORM WATER - FORCE MAINPIPE SIZE (INCHES)
UNKNOWN36810121824
STORM WATER - LATERALPIPE SIZE (INCHES)
UNKNOWN681012151820212430323336
STORM DRAIN STRUCTURESTYPE
2!! MANHOLE
") CATCH BASIN") DROP INLET
+Ï STORMWATER TREATMENT
q OUTFALL TO SSJID
Ú3 PUMP STATION
BASINCITY LIMITPARCELS
Figure 4: Existing StormDrain System
Attachment I
Request for Service Form
Attachment II
(Sample) Spill Field Report Form
(Sample) Spill Field Report Form
1 REV. 5/31/2023
CITY OF MANTECA
SPILL FIELD REPORT FORM
ALL ITEMS MUST BE COMPLETED
General Information
1. Spill Event ID No (Issued automatically by CIWQS): - -________ 1a. Customer Service Call Number:___________________________________________
2. Call Received From:___________________________________________________
3. Date Received: _____/_____/_____ (MM/DD/YY)
4. Time Received: _____:_____ (24-Hour Time)
5. Report Filled Out By:____________________ Phone Number (_____)_____-______ Section A. Physical Location Details (REQUIRED FOR CATEGORIES 1, 2, 3, & 4 SSOS)
1. Spill Location Name:____________________________________________________ (If the overflow did not occur at a street location, then use other identifiers such as intersection or manhole number)
2. Latitude:_____ deg. _____ min. _____ sec or _____ decimal degrees
3. Longitude:_____ deg. _____ min. _____ sec or _____ decimal degrees
4. Street Type: □ Alley, □ Avenue, □ Boulevard, □ Circle, □ Freeway, □ Highway, □Lane, □Loop, □ Trail, □ Other ___________________
5. Cross Street:__________________________________________________________
6. City:______________________
7. County:__________________
8. Spill Location Description:________________________________________________ _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________
9. Regional Water Quality Control Board:
(Sample) Spill Field Report Form
2 REV. 5/31/2023
Section B. Spill Details
1. Number of Appearance Points:_________
2. Spill Appearance Point (provide photos):
□Building or Structure
□Force Main or Pressure Sewer
□Gravity Sewer
□ Manhole
□Other Sewer System Structure
□Pump Station
□Other (specify)
3. Did the spill discharge to a drainage channel and/or surface water? □ Yes □ No
4. Did the spill discharge to a storm drainpipe that was not fully captured and returned to the sanitary sewer system? □ Yes □ No
5. Is the spill located within 1,000 feet of a municipal water intake or municipal groundwater well? □ Yes □ No
6. Private lateral spill? □ Yes □ No
7. Name of Responsible Party (if private lateral) _________________________________
8. Final spill destination (provide photos, check multiple if necessary):
□Beach
□Building or structure
□Other paved surface
□Storm drain
□Street/curb and gutter
□Surface Water
□ Unpaved surface
□Other (specify)
a. Explanation of final spill destination
b. Did spill create a nuisance (e.g., traffic or pedestrian impacts, private or public property impacts, etc.)? □ Yes □ No
9. Estimated total spill volume (gallons):___________________ a. Volume that reached a separate storm drain that flows to a surface water body? ________gallons
b. Volume that reached a drainage channel that flows to a surface water body? ________gallons
c. Volume discharged directly to a surface water body? ________gallons d. Volume discharged to land (e.g., soil, grass, curb, street, etc.)? ________gallons
(Sample) Spill Field Report Form
3 REV. 5/31/2023
10. Estimated total spill volume recovered (gallons):
a. Volume recovered from the separate storm drain that flows to a surface water body (Do not include wash water recovered)? ________gallons b. Volume recovered from a drainage channel that flows to a surface water body? ________gallons
c. Volume recovered from the surface water body? ________gallons d. Volume recovered from the discharge to land? ________gallons
11. Estimated volume of spill that reached surface water, drainage channel, or not recovered from a storm drain (gallons):
12. Estimated current spill rate (gallons per minute, if applicable):
13. Estimated spill start Date/Time:_____/_____/____ (MM/DD/YY) _____:_____ (24:00) a. Explanation of volume estimation methods used:
Provide diagrams and/or photographs of spill incident. Include details that will help explain how overflow volume was determined.
14. Sanitary sewer system agency was notified of or discovered spill Date/Time:
_____/_____/_____ (MM/DD/YY) _____:_____ (24:00)
15. Estimated Operator arrival Date/Time: _____/_____/____ (MM/DD/YY) _____:_____ (24:00)
16. Estimated spill end Date/Time: _____/_____/____ (MM/DD/YY) _____:_____ (24:00)
17. Spill cause:
□ Debris
□Flow exceeded capacity
□Grease deposition (FOG)
□Operator error
□Pipe structural problem/failure
□Pump station failure
□ Rainfall exceeded design
□ Root intrusion
□Vandalism
□Other (specify)
a. Spill cause explanation
b. Where did failure occur?
c. Description of pipe material and estimated age of pipe material at the failure location
(Sample) Spill Field Report Form
4 REV. 5/31/2023
d. Explanation of where failure occurred
e. Description of impact of the spill
18. If spill caused by wet weather, choose storm size:
□1 Year
□2 Year
□5 Year
□10 Year
□50 Year
□100 Year
□>100 Year
□ Unknown
□ Number of inches in time (hours or minutes)
a. Was there measurable precipitation during the 72-hour period prior to the overflow? □ Yes □ No
19. Diameter of sewer pipe at the point of blockage or spill cause (inches, if applicable):
20. Material of sewer pipe at the point of blockage or spill cause (if applicable):
21. Estimated age of sewer pipe at the point of blockage or spill cause (if applicable):
22. Description of terrain surrounding the point of blockage or spill cause (if applicable):
□Flat □ Mixed □Steep
23. Spill response activities (check multiple if necessary):
□ Cleaned-up (mitigated spill effects)
□ Contained all or portion of spill
□Inspected sewer using CCTV to
determine cause
□ Restored flow
(Sample) Spill Field Report Form
5 REV. 5/31/2023
□ Returned all or portion of spill to sanitary sewer system □Other (specify)
a. Explanation of spill response activities
24. Spill response completion Date/Time: _____/_____/____ (MM/DD/YY) _____:_____ (24:00)
25. Spill corrective action taken (check multiple if necessary):
□Added sewer to preventive maintenance program
□Adjusted schedule/method of preventive maintenance
□Enforcement action against FOG source
□Plan rehabilitation or replacement of sewer
□ Repaired sewer
□ Modified Spill Emergency Response Plan
□Other(specify)
a. Explanation of spill corrective action taken
QUESTIONS 26-34 FOR CATEGORIES 2-4 NOT REQUIRED (SKIP TO SECTION C)
26. Visual inspection results from impacted receiving water:
27. Health warnings posted? □ Yes □ No
a. If health warnings posted, list the location(s) of posting:
_________________________________________________________________ _________________________________________________________________
28. Did the spill result in a beach closure? □ Yes □ No a. Name of impacted beach(es) (if applicable):
29. Name of impacted surface water(s) (if applicable):
30. Impacts on aquatic life (if applicable):
31. Describe Investigations:
(Sample) Spill Field Report Form
6 REV. 5/31/2023
32. Were samples of the contamination receiving water obtained for each day of the duration of the spill? □ Yes □ No
32a. If samples were obtained, check the sampling location(s):
□ DCS-001: A point in a drainage conveyance system, before the drainage conveyance system flow discharges into a receiving water. □ RSW-001 Point of Discharge: A point(s) in the receiving water where sewage initially enters the receiving water.
□ RSW-001U: Upstream of Point of Discharge: A point in the receiving water, upstream of the point of sewage to capture ambient conditions absent of sewage discharge impacts.
□ RSW-001D: Downstream of Point of Discharge: A point in the receiving water, downstream of the point of sewage discharge, where the spill material is fully mixed with the receiving water.
32b. If samples were obtained, who obtained the samples?__________________ 32c. Samples Delivered to for Testing:
____________________________________________________
32d. Chain of Custody number for samples: ___________________________ and Date: _____/_____/____ (MM/DD/YY)
33. Water quality samples analyzed for (check multiple if necessary):
□ Ammonia
□ Dissolved oxygen
□Other chemical indicator(s) (specify)
□Biological indicator(s) (specify)
□ No water quality samples taken
□ Not applicable to this spill
□Other (specify)
(Sample) Spill Field Report Form
7 REV. 5/31/2023
a. Explanation of water quality samples analyzed for
34. Water quality sample results reported to (check multiple if necessary):
□ County Health Agency
□ Regional Water Quality Control Board
□ None of the above
□ No water quality samples taken
□ Not applicable to this spill
a. Explanation of water quality samples reported to
35. Overall spill description:
36. Provide photos of:
□ Waterbody bank erosion
□ Floating matter
□ Discoloration of receiving water
□ Water surface sheen (potentially from
oil and grease
□ Impact to receiving water
Section C. Notification Details
1. California Office of Emergency Services(OES) Control Number:
_____________________________________________________________________
2. Cal OES Called Date/Time: _____/_____/____ (MM/DD/YY) _____:_____ (24:00)
3. County health agency notified? □ Yes □ No
4. County health agency notified Date/Time: _____/_____/____ (MM/DD/YY) _____:_____ (24:00)
5. Regional Water Quality Control Board (RWQCB) notified? □ Yes □ No (Sample) Spill Field Report Form
8 REV. 5/31/2023
6. RWQCB notified Date/Time: _____/_____/____ (MM/DD/YY) _____:_____ (24:00)
7. Other agency notified? □ Yes □ No If yes, Name of agency ___________________
8. Other agency notified Date/Time: _____/_____/____ (MM/DD/YY) _____:_____ (24:00)
9. Was any of this spill report information submitted via fax to the Regional Water Quality Control board? □ Yes □ No
10. RWQCB faxed spill report information Date/Time: _____/_____/____ (MM/DD/YY) _____:_____ (24:00)
Section D. Cost Recovery (FOR CITY USE ONLY)
Was the Spill from a private system or caused by an outside agency, contractor or person? □ Yes □ No (If ‘Yes’, continue filling in as much information as possible.) □ The Spill was from a private system.
□ The Spill was caused by an activity being performed by an outside:
□ Agency □ Contractor □ Person □ Other _____________
Name of complex, agency, contractor or person:________________________________ Address of complex, agency, contractor or person:______________________________ ______________________________________________________________________ Name of insurance company, agent’s name and phone number, if known:
______________________________________________________________________ Name of person providing information:________________________________________ Name and phone number of any witness(es):
______________________________________________________________________ ______________________________________________________________________ (Sample) Spill Field Report Form
9 REV. 5/31/2023
______________________________________________________________________ Attachment III
Spill Flow Estimation Pictures
g:\adminasst\jobs\2012\1270003.00_manteca ssmp update\09-reports\9.09-reports\oerp-2014\iiia-sso flow est pics.doc DRAFT – REV. 2/21/2014 Reference Sheet for Estimating Sewer Spills
from Overflowing Sewer Manholes
All estimates are calculated in gallons per minute (gpm) g:\adminasst\jobs\2012\1270003.00_manteca ssmp update\09- reports\9.09-reports\oerp-2014\iiib-sewer spill estimation.doc DRAFT – REV. 2/21/2014 Sewer Spill Estimation
EXAMPLE 1: To calculate the estimated amount of gallons in a ponded sewage spill you must determine the volume of the spill. If it is a rectangular contained area, Volume = Length x Width x Depth x 7.48 gallons/cu. ft. = Gallons A spill 100’ x 100’ x 6” x 7.48 gal/cu. ft. = 100’ x 100’ x 0.5’ x 7.48 gal/cu. ft. = 37,400 gal See illustration below for estimating the volume of a circular ponded area.
EXAMPLE 2: If you are dealing with a spill that has been running into a storm drain, you must estimate the gallons by the amount of time of the overflow times the number of connections on the receiving line (assume 240 gal per household per 24 hrs).
If you have a line with 6 houses on it, and it has been overflowing for 24 hrs:
6 houses x (240 gal/house) x 24 hours = 1,440 gal
EXAMPLE 3a: If the overflow is less than 24 hours in duration, then the calculation must prorate the daily sewage generation rate. If you have 60 houses on a line that has been overflowing for 1 hr:
60 houses x (240 gal/day/house) x 1 hr x (1day/24hr) = 600 gal EXAMPLE 3b: If you have 6 houses on a line that has been overflowing for 12 hours:
6 houses x (240 gal/day/house) x 12 hrs x (1day/24hr) = 720 gal EX. 1a – Rectangular: EX. 1 b – Circular:
100 FT 100 FT
1 1
0 0
0 0
F F
T T
V. = 100’ x 100’ x 0.5’ x 7.48 V. = 100’ x 100’ x 0.5’ x 0.8* x 7.48 = 37,400 gal = 29,900 gals
*Factor for estimating area of a circle
as a portion of the area of a square.
g:\adminasst\jobs\2012\1270003.00_manteca ssmp update\09- reports\9.09-reports\oerp-2014\iiib-sewer spill estimation.doc DRAFT – REV. 2/21/2014 Note that the time of day of the overflow should be considered in the calculation of its volume especially if the land use of the tributary area to the overflow is predominantly residential. Over 90% of the daily sewage discharge from an average home occurs between the hours of 6 am and 12 midnight with 50-75% of the daily sewage discharge occurring between 8 am to noon and 7 pm to 11 pm (“diurnal peak hours”). This could result in a flow rate of 15 to 22.5 gal/hr during the diurnal peak hours vs. 10 gal/hr (average) over 24 hours.
If there is mixed land use tributary to an overflowing sewer, the following unit flow rates should be used in addition to the residential, as appropriate: hotel/motel – 100 gpd/room; restaurant - 55 gpd/seat; business offices - 175 gpd/1000 sq. ft.; and commercial/retail - 75 gpd/1000 sq.ft.
Wet weather conditions could further affect the per home daily sewage contribution due to infiltration and inflow (I/I) sources.
Attachment IV
City of Manteca Chain-of-Custody Record and Analysis Request Laboratory Chain of Custody
Submission:
2450 W. Yosemite Ave., Manteca, CA 95337
Client Report Attention PhoneAddress Project Name: FAXCity, State, Zip Copy to: System # Sampled by: Project ID
Date Time
Received / Reliquished by:Received / Reliquished by:Received / Reliquished by:Received / Reliquished by:Received / Reliquished by:
Signature Print Name Company Date Time
City of Manteca
Sampling Info
Sample Description / Location Comment or Station Code
G:\AdminAsst\Jobs\2012\1270003.00_Manteca SSMP Update\09-Reports\9.09-Reports\OERP-2014\IV-Chain of Custody Form DRAFT - REV. 2/21/2014 Attachment V
City of Manteca Key Personnel
City of Manteca Key Personnel
• Wastewater Quality Control Facility (209) 456-8470
• WQCF Collections System Supervisor (209) 456-8472
(209) 496-4991
• WQCF Chief Plant Operator (209) 456-8486
• WQCF Superintendent (209) 456-8473
• Maintenance Workers
o Lead Maintenance Worker (209) 639-4886
o Maintenance Worker I (209) 639-4886
o Maintenance Worker II (209) 639-4886
o Maintenance Worker III (209) 639-4886
o Standby Worker (209) 639-4892
SEWER SYSTEM MANAGEMENT PLAN
SEPTEMBER 2025 / FINAL / CAROLLO
CITY OF MANTECA
WASTE DISCHARGE ID: 5SSO10993
APPENDIX C SERVICE AGREEMENTS
SEWER SYSTEM MANAGEMENT PLAN
SEPTEMBER 2025 / FINAL / CAROLLO
CITY OF MANTECA
WASTE DISCHARGE ID: 5SSO10993
APPENDIX D LIFT STATION INSPECTION CHECKLIST
CITY OF MANTECA
Collections Sewer Corrective
ID 092525-061 Logged By Thomas Mannor 09/25/2025 12:01 AM Status Open Priority 1 Service
Request
Priority
Code
6 Preventative Begin Date / Time End Date / Time
Department Public Works -WQCF 10/01/2025 08:00 AM 10/01/2025 09:00 AM Activity Description Group Collections Sewer Preventive Due Date / Time Clean & Inspect Sewer Wet Well
Location WW23 - GRIFFIN PARK SEWER STATION - 20572 TINNIN ROAD MANTECA, CA
Assigned To
Description 3M - Clean and Inspect Sewer lift Station Wet Well This Work Order is part of a recurring series from Work Order [071724-006] Notes Sewer Line Daily Total Sewer Hot Spot Daily
Total
3M - Clean and Inspect Sewer lift Station Wet Well FT FT Foreman
Resolution
Crew
Vehicle
Conditions Upon Arrival
Contractor
Conditions Upon Departure
Additional Notes
Total C.U. ft3 Removed = _________
Linked Work Orders
ID Activity Description Document Attachments
Document Name Document Type
9/25/2025 3:39:47 PM Page 1 of 2
Tasks
Order Completed Description Notes DateCompleted
1 ¨ Always follow all City Safety Standards
(LOTO, PPE)
2 ¨ Clean and Inspect Sewer lift Station Wet
Well
3 ¨ Vacuum Grease and Debris Field from
Wet Well
4 ¨ Carefully Remove Transducer & Clean
Transducer Stilling Well
Do Not Pressure wash Transducer
5 ¨ Carefully Inspect Transducer Cable for
Damage
6 ¨ Carefully Remove Floats and Remove any
Grease Build up
7 ¨ Do Not Pressure Wash Floats
8 ¨ Carefully Inspect Float Cables for
Damage
9 ¨ Carefully Re-Install Transducer & Floats
10 ¨ Clean Area of all Maintenance Debris &
Tools
11 ¨ Secure Wet Well Hatches & Oil Locks
Schedule
This is a Recurring Work Order ¨
Recurring...
Assets
Asset ID Layer or Facility GIS Location Label / Name
18041 WWC-WW23 GRIFFIN PARK WWC-WW23 GRIFFIN PARK WWC-WW23-WWTRK-23-001 9/25/2025 3:39:47 PM Page 2 of 2
SEWER SYSTEM MANAGEMENT PLAN
SEPTEMBER 2025 / FINAL / CAROLLO
CITY OF MANTECA
WASTE DISCHARGE ID: 5SSO10993
APPENDIX E FATS, OILS, AND GREASE BOOK FOR FOOD
SERVICE ESTABLISHMENTS
SEWER SYSTEM MANAGEMENT PLAN
SEPTEMBER 2025 / FINAL / CAROLLO
CITY OF MANTECA
WASTE DISCHARGE ID: 5SSO10993
APPENDIX F ACCEPTABLE DISPOSAL FACILITIES
SEWER SYSTEM MANAGEMENT PLAN
SEPTEMBER 2025 / DRAFT / CAROLLO
CITY OF MANTECA WASTE DISCHARGE ID: 5SSO10993 F-1
Table F.1 Disposal Sites
Name Address City County ZIP Alansi's Oil and Grease 3420 Giant Road San Pablo Contra Costa 94806 All Valley Environmental, Inc. 523 N. Brawley Avenue Fresno Fresno 93706 Ameriguard Maintenance Service, LLC 14245 Monterey Road San Martin Santa Clara 95046 Ameriguard Maintenance Service, LLC 142 Linley Avenue Empire Stanislaus 95319 Baker Commodity, Inc. 7750 Hanford Armona Road Hanford Kings 93230 Central Martin Sanitation Agency 1301 Anderson Drive San Rafael Marin 94901 Central Valley Waste Services 1333 E. Turner Road Lodi San Joaquin 95240 City of Bakersfield Wastewater Treatment Plant 3298 Plant Road Bakersfield Kern 93308 City of Hayward Water Pollution 3700 Enterprise Avenue Hayward Alameda 94545 City of Modesto Wastewater Quality Control Facility 1221 Sutter Avenue Modesto Stanislaus 95351 City of Stockton RWCF 2500 Navy Drive Stockton San Joaquin 95206 Delta Diablo 2500 Pittsburg-Antioch Highway Antioch Contra Costa 94509 East Bay Municipal Utility District 2020 Wake Avenue Oakland Alameda 94607 Fairfield-Suisun Sewer District 1010 Chadbourne Road Fairfield Solano 94534 Fresno-Clovis Regional Wastewater Reclamation Facility 5607 W. Jensen Avenue Fresno Fresno 93706 Laguna 4300 Liano Road San Rosa Sonoma 95407 Lodi White Slough WPCP 12751 N. Thorton Road Lodi San Joaquin 95242 Oro Loma Sanitary District 2600 Grant Avenue San Lorenzo Alameda 94580 Pleasant Grove 5051 Westpark Drive Roseville Placer 95747 Roseville Dry Creek Wastewater Treatment Plant 1800 Booth Road Roseville Placer 95747 Sacramento Regional Wastewater Treatment Plant 8251 Laguna Station Elk Grove Sacramento 95758 San Jose-Santa Clara Regional Wastewater Facility 4245 Zanker Road San Jose Santa Clara 95134 Silicon Valley Clean Water 1400 Radio Road Redwood City San Mateo 94065 SRC Plant 11350 Kiefer Boulevard Sacramento Sacramento 95742 Interstate Oil Company 8221 Alpine Avenue Sacramento Sacramento 95826 Interstate Oil Company 550 Greenville Road Lot D Livermore Alameda 95826 Sisk Tallow Recycling 4506 S. Commons Road Turlock Stanislaus 95380
SEWER SYSTEM MANAGEMENT PLAN
SEPTEMBER 2025 / FINAL / CAROLLO
CITY OF MANTECA
WASTE DISCHARGE ID: 5SSO10993
APPENDIX G SAMPLE FOG EDUCATIONAL MATERIALS
SEWER SYSTEM MANAGEMENT PLAN
SEPTEMBER 2025 / FINAL / CAROLLO
CITY OF MANTECA
WASTE DISCHARGE ID: 5SSO10993
APPENDIX H COLLECTION SYSTEM PERFORMANCE
SEWER SYSTEM MANAGEMENT PLAN
SEPTEMBER 2025 / DRAFT / CAROLLO
CITY OF MANTECA
WASTE DISCHARGE ID: 5SSO10993 H-1
APPENDIX H COLLECTION SYSTEM PERFORMANCE
Spill History
Table H.1 Spill Events by Category
Year Category 1 Category 2 Category 3 Category 4(1) Total 2015 4 -- 4
2016 10 -- 10
2017 1 2 -- 3
2018 1 5 -- 6
2019 1 4 -- 5
2020 1 2 -- 3
2021 1 2 -- 3
2022 1 2 -- 3
2023 2 2 4
2024 2 2
Total 3 5 35 0 43
Notes:
(1) Category 4 Spills are a new category per General Order WQ 2022-0103-DWQ (General Order).
Table H.2 Spill Volume (Gallons) by Category
Year Category 1 Category 2 Category 3 Category 4(1) Total 2015 552 -- 552
2016 720 -- 720
2017 420,000 587 -- 420,587
2018 52,164 1,427 -- 53,591
2019 1,880 1,142 -- 3,022
2020 1,125 1,310 -- 2,435
2021 4,500 198 -- 4,698
2022 2,300 166 -- 2,466
2023 1,121 765 1,886
2024 781 781
Total 421,121 61,969 6,107 490,738
Notes:
(1) Category 4 Spills are a new category per the General Order.
SEWER SYSTEM MANAGEMENT PLAN
SEPTEMBER 2025 / DRAFT / CAROLLO
CITY OF MANTECA
WASTE DISCHARGE ID: 5SSO10993 H-2
Table H.3 Spill Events by Spill Cause
Year Operational(1) Condition(2) Structural(3) Other(4) Total 2015 3 1 4
2016 10 10
2017 2 1 3
2018 4 1 1 6
2019 5 5
2020 1 1 1 3
2021 3 3
2022 2 1 3
2023 4 4
2024 1 1 2
Total 35 5 3 43
Notes:
(1) Operational: Debris from Construction, Debris from Lateral, Debris-General, Debris-Rags, Fats and Oils and Grease, Root Intrusion, Debris-Wipes/Non-Disposable.
(2) Condition: Flow Exceeded Capacity (Separate CS Only), Natural Disaster, Rainfall Exceeded Design, II (Separate CS Only).
(3) Structural: Air Relief Valve (ARV)/Blow-Off Valve (BOV) Failure, Pipe Structural Problem/Failure, Pipe Structural Problem/Failure - Installation, Pump Station Failure-Controls, Pump Station Failure-Mechanical, Pump Station FailurePower, Siphon Failure. (4) Other: Construction Diversion Failure, CS Maintenance Failure, Damage by Others Not Related to CS Construction/Maintenance (Specify Below), Inappropriate Discharge to CS, Operator Error, Other (specify below), Surcharged Pipe (Combined CS Only), Vandalism.
SEWER SYSTEM MANAGEMENT PLAN
SEPTEMBER 2025 / DRAFT / CAROLLO
CITY OF MANTECA
WASTE DISCHARGE ID: 5SSO10993 H-3
Table H.4 Spill Volume (Gallons) by Spill Cause
Year Operational(1) Condition(2) Structural(3) Other(4) Total 2015 490 62 552
2016 720 720
2017 587 420,000 420,587
2018 627 52,164 800 53,591
2019 3,022 3,022
2020 810 1,125 500 2,435
2021 4,698 4,698
2022 2,465 1 2,466
2023 1,886 1,886
2024 360 421 781
Total 15,665 473,772 1,301 490,738
Notes:
(1) Operational: Debris from Construction, Debris from Lateral, Debris-General, Debris-Rags, Fats and Oils and Grease, Root Intrusion, Debris-Wipes/Non-Disposable.
(2) Condition: Flow Exceeded Capacity (Separate CS Only), Natural Disaster, Rainfall Exceeded Design, II (Separate CS Only).
(3) Structural: Air Relief Valve (ARV)/Blow-Off Valve (BOV) Failure, Pipe Structural Problem/Failure, Pipe Structural Problem/Failure - Installation, Pump Station Failure-Controls, Pump Station Failure-Mechanical, Pump Station FailurePower, Siphon Failure. (4) Other: Construction Diversion Failure, CS Maintenance Failure, Damage by Others Not Related to CS Construction/Maintenance (Specify Below), Inappropriate Discharge to CS, Operator Error, Other (specify below), Surcharged Pipe (Combined CS Only), Vandalism.
SEWER SYSTEM MANAGEMENT PLAN
SEPTEMBER 2025 / DRAFT / CAROLLO
CITY OF MANTECA
WASTE DISCHARGE ID: 5SSO10993 H-4
Preventive Maintenance History
Table H.5 Preventive Maintenance Data – Gravity Mains
Year Length of Pipe
Cleaned (miles)
Percent of Sewers
Cleaned
Length of Pipe
Inspected (miles)
Percent of Sewers
Inspected
Pipes Segments
That Received
Root Treatment
2015 0
2016 <0.1 <1% 9.9 4% 25
2017 0.5 <1% 0
2018 30.9 12% 2.1 1% 48
2019 44.6 18% 28.4 11% 16
2020 43.9 18% 25.6 10% 21
2021 53.2 21% 22.4 9% 8
2022 29.9 12% 14.4 6% 3
2023 31.4 13% 8.9 4% 5
2024 60 24% 15.9 6% 4
Total 294.5 -- 127.5 -- 130
Annual Average(1) 32.7 13% 15.9 6% 13
Notes:
(1) Annual average is based on years with data.
Table H.6 Preventive Maintenance Data – Hot Spots
Year No. of Hot Spots Length of Hot Spots Clean & Inspected (miles)
2015 51
2016 78
2017 59 0.2
2018 73 10.1
2019 78 14.0
2020 78 16.1
2021 83 14.1
2022 81 16.3
2023 94 17.0
2024 85 16.2
Total -- 103.9
Annual Average(1) 76 13.0
Notes:
(1) Annual average is based on years with data.
SEWER SYSTEM MANAGEMENT PLAN
SEPTEMBER 2025 / DRAFT / CAROLLO
CITY OF MANTECA
WASTE DISCHARGE ID: 5SSO10993 H-5
Table H.7 Preventive Maintenance Data – Miscellaneous
Year Manhole
Inspections
Lift Station
Inspection &
Preventive
Maintenance
Percent of Lift
Stations Inspected
& Cleaned
Lift Station Panel
Cleans Smart Covers
2015 57 9 43% 14
2016 52 12 57% 0
2017 66 19 90% 13
2018 53 194 924% 19
2019 65 72 343% 9
2020 60 68 324% 33
2021 64 36 171% 1
2022 60 71 338% 7
2023 50 64 305% 46
2024 64 60 286% 20
Total 591 605 -- 162.0
Annual Average(1) 59.1 60.5 288% 16.2
Notes:
(1) Annual average is based on years with data.
Table H.8 Preventive Maintenance Data – Fats, Oils, and Grease Year Educational Outreach Material
Activities Implemented
Food Service Establishment
Inspections
2015
2016
2017
2018 1
2019 0 1
2020 0 55
2021 7 22
2022 13
2023 8
2024 8
Total 37.0 78
Annual Average(1) 5.3 26
Notes:
(1) Annual average is based on years with data.
SEWER SYSTEM MANAGEMENT PLAN
SEPTEMBER 2025 / FINAL / CAROLLO
CITY OF MANTECA
WASTE DISCHARGE ID: 5SSO10993
APPENDIX I CHANGE LOG
SEWER SYSTEM MANAGEMENT PLAN
SEPTEMBER 2025 / DRAFT / CAROLLO
CITY OF MANTECA WASTE DISCHARGE ID: 5SSO10993 I-1
Table I.1 SSMP Change Log
Revision
Month/Year SSMP Section Description of Change/Revision Made Initials 8/25 Overview A comprehensive revision was completed for the SSMP update for May 2025 MW 8/25 1 A comprehensive revision was completed for the SSMP update for May 2025 MW 8/25 2 A comprehensive revision was completed for the SSMP update for May 2025 MW 8/25 3 A comprehensive revision was completed for the SSMP update for May 2025 MW 8/25 4 A comprehensive revision was completed for the SSMP update for May 2025 MW 8/25 5 A comprehensive revision was completed for the SSMP update for May 2025 MW 8/25 6 A comprehensive revision was completed for the SSMP update for May 2025 MW 8/25 7 A comprehensive revision was completed for the SSMP update for May 2025 MW 8/25 8 A comprehensive revision was completed for the SSMP update for May 2025 MW 8/25 9 A comprehensive revision was completed for the SSMP update for May 2025 MW 8/25 10 A comprehensive revision was completed for the SSMP update for May 2025 MW 8/25 11 A comprehensive revision was completed for the SSMP update for May 2025 MW 8/25 Appendix A An appendix that includes contact information was added to the SSMP MW 8/25 Appendix B Replaced the Overflow Emergency Response Plan with the updated Spill Emergency Response Plan which conforms with updated SSMP regulations MW 8/25 Appendix C Included copies of service agreements with other agencies per SSMP regulations because these agreements are not on the City website. MW 8/25 Appendix D Included a copy of the lift station inspection checklist MW 8/25 Appendix F Included list of FOG disposal facilities. MW 8/25 Appendix G Included example FOG outreach material MW 8/25 Appendix H Included program measurements MW 8/25 Appendix I Added a SSMP change log per SSMP requirements. MW