City Council Meeting Agenda
June 23, 2025

-1-
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28

RESOLUTION NO. 2025-R ___

A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF

CULVER CITY, CALIFORNIA , APPROVING AND
ADOPTING THE 2025 SEWER SYSTEM MANAGEMENT

PLAN (SSMP) UPDATE AS REQUIRED BY THE STATE

WATER RESOURCES CONTROL BOARD ORDER
NO.2006-0003 STATEWIDE GENERAL WASTE

DISCHARGE REQUIREMENTS (WDR) FOR SANITARY
SEWER SYSTEMS AS AMENDED BY ORDER NO. 2022 -
0103-DWQ.

WHEREAS, on May 2, 2006, the State Water Resources Control Board adopted Order No. 2006-0003-Statewide General Waste Discharge Requirements (WDR) for publicly owned sanitary sewer systems requiring the development and implementation of a system - specific local Sewer System Management Plan (SSMP) that documents a comprehensive program for sewer system operation, maintenance, and repair; and WHEREAS, on July 13, 2009, City Council approved the City’s SSMP through adoption of Resolution No. 2009-R055; and
WHEREAS, on July 26, 2013, the State Water Resources Control Board issued Order No. WQ 2013 -0058-EXEC amending WDR requirements related to sanitary sewer overflow reporting and record keeping; and,
WHEREAS, the WDR previously required that the City’s SSMP be updated and recertified by City Council every five years or when significant changes are made to the SSMP; and
WHEREAS, the SSMP was revised to reflect requirements of Order No. WQ 2013-0058-EXEC and operational and organizational changes implemented since July 13, 2009 and the City Council approved the updated SSMP on June 23, 2014 by adoption of Resolution No. 2014-R047; and

-2-
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28

WHEREAS, on December 6, 2022, the State Water Resources Control Board issued Order No. 2022-0103-DWQ, which superseded the previous State Water Resources Control Board Order 2006-0003-DWQ and
WHEREAS, the City’s SSMP has been updated to reflect requirements of Order No. 2022-0103-DWQ;
WHEREAS, pursuant to Order No. 2022 -0103-DWQ, after the adoption of the SSMP update, a recertification shall be filed with the State Water Resources Control Board and the SSMP shall be updated every six years until further Order of the Board.

NOW, THEREFORE, the City Council of the City of Culver City, California, DOES HEREBY RESOLVE, as follows:

The City Council hereby approves the 2025 Sewer System Management Plan update in accordance with State Water Resources Control Board Order No. 20 06-0003- Statewide General Discharge Requirements (WDR) for Sanitary Sewer Systems as amended by Order No. 2022 -0103-DWQ, attached to this Resolution as Exhibit A and incorporated herein.

APPROVED AND ADOPTED on the ____day of ____________, 2025.

____________________________
DAN O’BRIEN, Mayor
City of Culver City, California

ATTEST: APPROVED AS TO FORM:

_______________________________ ____________________________

JEREMY BOCCHINO HEATHER BAKER
City Clerk City Attorney

Sewer System
Management Plan
(SSMP)
in compliance with

Statewide General Waste Discharge Requirements
for Sanitary Sewer Systems

State Water Resources Control Board
Order No. 2022-0103-DWQ

Updated May 2025

CERTIFICATION OF SEWER SYSTEM MANAGEMENT PLAN

I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to ensure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is to the best of my knowledge and belief, true, accurate and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations.

City Authorized Representative:

Yanni Demitri, P.E., T.E.

Public Works Director and City Engineer
Culver City Public Works Department
Date

Sewer System Management Plan (SSMP)
May 2025

Table of Contents

CHAPTER PAGE

INTRODUCTION ............................................................................................................................................................. 1

1.0 SEWER SYSTEM AMNAGEMENT PLAN GOAL AND INTRODUCTION ............................................................... 2

1.1 Regulatory Context...……………………….…...……………………………….…………………………………………………………….2

1.2 Sewer System Management Plan Update Schedule...……………………….………….………………………………………2

1.3 Sewer System Asset Overview………………….….………………………………………….……………………………………….….3

2.0 ORGANIZATION .............................................................................................................................................. 5

3.0 LEGAL AUTHORITY ........................................................................................................................................ 11

4.0 OPERATION AND MAINTENANCE PROGRAM ............................................................................................... 13

4.1 Updated Map of Sanitary Sewer System……….………………………………………….….……………………………...…….13

4.2 Preventative Maintenance (PM) Activities ............................................................................................. 13

4.3 Training ................................................................................................................................................... 15

4.4 Equipment Inventory .............................................................................................................................. 15

5.0 DESIGN AND PERFORMANCE PROVISIONS: .................................................................................................. 17

5.1 Updated design Criteria and Construction standard and Specifications ................................................ 17

5.2 Procedures and Standards ...................................................................................................................... 17

6.0 SPILL EMERGENCY RESPONSE PLAN ............................................................................................................. 18

6.1 - Introduction .......................................................................................................................................... 18

6.2 - Regulatory Requirements for the Spill Emergency Response Plan Section .......................................... 18

6.3 - SSO Response Plan ............................................................................................................................... 19

6.3.1 - Initial Notification of SSO and Call-Out ........................................................................................ 19

6.3.2 - Containment ................................................................................................................................ 20

6.3.3 - Traffic Control and Protection of Public ....................................................................................... 20

6.3.4 - Additional Resources .................................................................................................................... 20

6.3.5 - Cleanup ........................................................................................................................................ 20

6.3.6 - Estimate Spill Volume ................................................................................................................... 20

6.3.7 - Monitoring ................................................................................................................................... 21

6.3.8 - Spill Reporting .............................................................................................................................. 21

6.3.9 - Technical Report .......................................................................................................................... 21

6.3.10 - Agencies Coordination……………………………………………………………………………………………….….………...21

6.4 - Emergency Notification Tree ................................................................................................................ 22

6.5 - Emergency Notification Contacts ......................................................................................................... 23

Sewer System Management Plan (SSMP)
May 2025

Table of Contents

CHAPTER PAGE

6.6 - Outside Resource Contact List .......................................... ...…………………….………………….......................24

6.7 - Outside Agency Notification Numbers ................................................................................................. 24

6.8 - Training and SERP Review …………………………………………...……………………………………………………….………...25

7.0 SEWER PIPE BLOCKAGE CONTR PROGRAM .................................................................................................. 26

8.0 SYSTEM EVALUATION, CAPACITY ASSURANCE, AND CAPITAL IMPROVEMENTS .......................................... 29

8.1 System Evaluation and Condition Assessment ....................................................................................... 29

8.2 Capacity Assessment and Design Criteria .............................................................................................. 30

8.3 Prioritization of Corrective Action .......................................................................................................... 31

8.4 Capital Improvement Plan ...................................................................................................................... 31

9.0 MONITORING, MEASUREMENT, AND PROGRAM MODIFICATIONS ............................................................. 33

10.0 SSMP PROGRAM AUDITS .............................................................................................................................. 35

11.0 COMMUNICATION PROGRAM ...................................................................................................................... 36 LIST OF APPENDICIES…………………………………………………………………………………………………….………….…………………...……...37

APPENDIX A: SWRCB Order No. 2022-0103-DWQ
APPENDIX B: Culver City Equipment Inventory and Vehicle Safety Inspection Checklist APPENDIX C: Map of Culver City Yard & Pump Stations and Sewer Service Area Boundary APPENDIX D: Map of SSO Occurrences from August 2019 to May 2025 APPENDIX E: Sewer Spill Field Report Form
APPENDIX F: Methods for Estimating Spill Volume
APPENDIX G: Culver City Municipal Code Title 5, Chapter 5.02 APPENDIX H: Los Angeles County Code Title 20, Division 2

Sewer System Management Plan (SSMP)
May 2025

1 INTRODUCTION

On May 2, 2006 the State Water Resources Control Board (SWRCB) adopted a Statewide General Waste Discharge Requirements and Monitoring and Reporting Program (WDRs) by issuing Order No. 2006 -003- DWQ. The regulations in the Order were born out of growing concern about the water quality impacts of Sanitary Sewer Overflows (SSOs), particularly those that cause beach closures or pose serious health and safety or nuisance problems.

Two major components of the WDRs are the requirements that owners and operators of publicly owned collection sewer systems a mile long or greater apply for coverage under the WDRs and that they develop and implement a Sewer System Management Plan (SSMP). Culver City owns and operates eighty-seven (87) miles of gravity and force main sewers and six (6) pump stations and is therefore subject to the WDRs.

This document is separated into eleven (11) chapters and organized to be closely in line with the requirements contained and as they appear in the WDRs. Every section or subsection of each chapter addresses one of the key elements of the SSMP guidelines of the WDRs.

This document has been prepared through a joint effort between City Maintenance, Engineering and Environmental Programs staff. Current practices were evaluated and modified to achieve compliance with the WDRs and to reduce or eliminate SSOs.

On December 6, 2022, SWRCB adopted a Reissued WDR Order No. WQ2022 -0103-DWQ and became effective on June 5, 2023 (Appendix A). The Reissued WDR updates many aspects of the 16-year-old Order and includes a number of new requirements for Sewer System Management Plans to help protect the Waters of the State . The WDRs require that the SSMP be updated and recertified a minimum of once every six (6) years. The City of Culver City’s original SSMP was certified with the SWRCB on July 2009, and the City has kept it updated as required since then. The next update of the plan will be due on August 2, 2025 per current Order.

Sewer System Management Plan (SSMP)
May 2025

2 1.0 SEWER SYSTEM Management PLAN GOAL AND INTRODUCTION

The goal of the Sewer System Management Plan (Plan) 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 Plan must include a narrative Introduction section that discusses the following items (see below):

1.1 Regulatory Context

The Plan Introduction section must provide a general description of the local sewer system management program and discuss Plan implementation and updates.

In order to minimize sewer spills and mitigate the effects of the spills that may occur. The goals of the City’s SSMP are to ensure that:

1. Culver City collection system facilities are properly operated, maintained, and managed to minimize sanitary sewer overflows (SSOs) and their impacts on receiving waters and on public health and safety;

2. Maintain uninterrupted sewage flow without health hazard, effluent leakage, or water infiltration and inflow;

3. When SSOs do occur, res ponse measures are in place and that all feasible steps are taken to mitigate their impacts to public health and the environment;

4. SSOs are promptly reported to the appropriate regulatory authorities and the public is adequately notified within the required time frames; and

5. All SSOs events, system deficiencies and remedial actions taken are well documented;

6. Prioritize structural deficiencies and implement short -term and long -term maintenance and rehabilitation actions to address each deficiency.

7. Provide a safe working environment for City employees;

8. Provide City employees with the tools and training needed to perform their work effectively and achieve the City’s goals.

1.2 Sewer System Management Plan Update Schedule

The Plan Introduction section must include a schedule for the Enrollee to update the Plan, including the schedule for conducting internal audits. The schedule must include milestones for incorporation of activities addressing prevention of sewer spills.

The schedule for the Sewer System Management Plan (SSMP) updates and required audits is carried over from the previous Order. The State Water Board’s provides a lookup tool for all required due dates for

Sewer System Management Plan (SSMP)
May 2025

3 updating Plan and Audit as well. SSMP updates are required every six (6) years and audits every three (3) years. (see chart below).

The City’s most recent SSMP audit covered the period from August 2021 through August 2024.

SSMP updates address audit findings and any significant milestones that have been reached such as completion of Capital Improvement projects , implementation of new maintenance strategies, and introduction of new technology to prevent spills.

Sewer System Management Plan Update Due Dates
System Name WDID
Number
Original Plan
Required Due Date
Required Plan
Due Date
Required Plan
Due Date
Required Plan
Due Date
Required Plan
Due Date
Culver City CS 4SSO10381 8/2/2009 8/2/2014 8/2/2019 8/2/2025 8/2/2031

Audit Due Dates
System Name WDID Number
Original
Required
Plan Audit
Date
Required
Plan
Audit Due
Date
Required
Plan
Audit Due
Date
Required
Plan
Audit Due
Date
Required
Plan
Audit Due
Date
Required
Plan
Audit Due
Date
Required
Plan
Audit Due
Date
Required
Plan
Audit Due
Date
Culver City CS 4SSO10381 8/2/2011 8/2/2013 8/2/2015 8/2/2017 8/2/2019 8/2/2011 8/2/2024 8/2/2027

1.3 Sewer System Asset Overview

The Plan Introduction section must provide a description of the Enrollee-owned assets and service area, including but not limited to:

a) Location, including county(ies);
b) Service area boundary;
c) Population and community served;
d) System size, including total length in miles, length of gravity mainlines, length of pressurized (force mains), and number of pump stations and siphons;
e) Structures diverting Stormwater to the sewer system; f) Data management systems;
g) Sewer system ownership and operation responsibilities between enrollee and private entities for upper and lower sewer laterals;
h) Estimated number or percent of residential, commercial, and industrial service connections; and i) Unique service boundary conditions and challenge(s).

Additionally, the Plan Introduction section must provide reference to the Enrollee’s up -to-date map of its sanitary sewer system, as required in section 4.1 (updated map of Sanitary Sewer System) of this Attachment.

The City of Culver City (City) is a charter city incorporated in 1917. Culver City is located in western Los Angeles County, generally situated north of Los An geles International Airport, east of the Pacific Ocean and the Marina del Rey small craft harbor, south of Beverly Hills, and southeast of Santa Monica. The City is approximately five square miles with a residential population of approximately 39,883 as of July 2024.

The collection system consists of 87 miles of gravity mains ranging from 6 -inch to 24-inch, 3 siphons, 6

Sewer System Management Plan (SSMP)
May 2025

4 pump stations, and 4.0 miles of force main ranging from 6-inch to 18-inch. The sewer lines are made of a variety of materials, including vitrified clay pipe (VCP), polyvinyl chloride (PVC), cast iron, and ductile Iron.

The City converted one of the pumps stations (Mesmer) into a low-flow stormwater diversion system.

The computerized maintenance management system (CMMS), known as MaintStar, is used for work orders and maintaining inspection and asset data, and ArcGIS(ESRI) for system mapping.

The City does not own or maintain any portion of the service lateral, except for City owned buildings connected the collection system. The number of service connections is estimated to be approximately 13,355, and it consists of 72% residential, 21% commercial, and 7% industrial. Sewer service is provided only to properties within the city limits.

Overall, the City has put itself in a good position to continue maintaining its collection system. There are a few service area challenges, such as easements in backyards and poor condition s in privately owned sewer laterals. However, all easements can be accessed by hyd ro-cleaning equipment. The sanitary Sewer System map depicts gravity mains, manholes, lift stations, siphons and other collection system features, and it is complete, accurate, up-to-date, and available to staff.

Sewer System Management Plan (SSMP)
May 2025

5 2.0 ORGANIZATION
The Plan must identify organizational staffing responsible and integral for implementing the local Sewer System Management Plan through an organization chart or similar narrative documentation that includes:

a) The name of the responsible Official as required in section 5.1 (Designation of a Legally Responsible Official) of this General Order

Authorized Representative

The City has designated a principal executive officer pursuant to Section 5.1., DESIGNATION OF A LEGALLY RESPONSIBLE OFFICIAL , of the State General WDR (Order No. 2022- 0103). Contact information for the City’s Authorized Representative is:

Mr. Yanni Demitri, P.E., T.E.

Director of Public Works/City Engineer
9770 Culver Boulevard, Culver City, CA 90232
(310) 253-5630; [email protected]

b) The position titles, telephone numbers, and email addresses for management, administrative, and maintenance positions responsible for implementing specific Sewer System Management Plan elements:

Organization Chart

The Director of Public Works/City Engineer is responsible for the management/execution of the compliance actions required under the WDRs. This includes, but is not limited to, signing and certification of all reports and correspondence as required under t his Order. The Public Works’ Division Managers may also perform these duties on behalf of the Director of Public Works/City Engineer.

Mr. Sean Singletary, Division Manager
PW – Environmental Programs & Operations Division
9505 W. Jefferson Boulevard, Culver City, CA 90232
(310) 253-6457; [email protected]

Mr. Gary Wansley, Division Manager
PW – Maintenance Operations Division
9505 W. Jefferson Boulevard, Culver City, CA 90232
(310) 253-6444; [email protected]

Mr. Mate Gaspar, Division Manager
PW – Engineering Services Division
9770 Culver Boulevard, Culver City, CA 90232
(310) 253-5602; [email protected]

Sewer System Management Plan (SSMP)
May 2025

6 Public Works Director/
City Engineer
Environmental Programs &
Operations Manager
Maintenance Operations
Manager
Engineering Services
Manager
Associate Engineer
WDR
Maintenance Ops.

Supervisor
Administrative
Staff
Sewer Crew
Leader
Sewer Lift Station
Electro Mechanic
Subdrain
Workers
Senior Civil
Engineer
Public Works
Inspector
Senior Management,
Management, & Associate
Analysts

Senior Civil
Engineer
NPDES

Sewer System Management Plan (SSMP)
May 2025

7 C) Organizational lines of authority

Description of Responsibilities
City Council
Responsible for establishing new laws and amending
existing regulations. Approves and adopts the Sewer
System Management Plan (SSMP).

City Manager
The chief executive officer of the City. Provides
general direction to the Director of Public Works.

Receives broad policy direction from the City Council.

Public Works Department
Director of Public Works
Directs and administers the City's sewer maintenance
program within the scope of the City Manager’s
direction. Supervises the preparation of the SSMP,
monitors SSMP budget and performance, and allocates
needed resources. The Director of Public Works is a
Legally Responsible Official.

Maintenance Operations
Division
Maintenance Operations
Manager
Responsible for the day-to-day operation and
maintenance of the sanitary sewer collection system.

Also responsible for supervision of the field crews.

Sewer Crew Leader
Responsible for carrying out the tasks assigned by the
Public Works Maintenance Operations Manager,
including assigning specific tasks to crews. Maintains and operates the City’s sewage collection system and
pump stations on a day to day basis.

Heavy Equipment
Operator(s) Operates heavy equipment in the field.

Sewer Lift Station Electro
Mechanic
Responsible for the ongoing electrical and mechanical
maintenance of the City’s sewer lift stations.

Subdrain Workers
Conduct maintenance activities, including sewer
cleaning, response to service calls, and regular
inspections of the sanitary sewer system.

Administrative Secretary
(Customer Service Staff)
Receive complaints and requests for investigation from
various sources and refer to appropriate staff.

Sewer System Management Plan (SSMP)
May 2025

8 Description of Responsibilities
Public Works Department
Environmental Programs and
Operations Division
Environmental Programs &
Operations Manager
Responsible for planning, organizing, coordinating and
directing the City’s SSMP under the overall direction of Director of Public Works.

Senior Civil Engineer
NPDES
Supports the Environmental Programs division’s
efforts, assists when water quality monitoring is
performed in response to an SSO.

Associate Engineer
WDR
Reports SSOs to the appropriate regulatory agencies,
oversees emergency spill responses, and investigates.

Provides engineering support and analysis relating to
operation and maintenance of the City’s sewer system.

Make sure
Engineering
Division
Engineering Services
Manager
Responsible for the day-to-day operation of the
Engineering Division; implements direction from the
Director of Public Works. Plans and oversees capital
improvements to the City’s sewer system.

Senior Engineer
Manage capital improvement projects and conduct
engineering review/approve designs for new and
repaired sewer lines and pump stations to ensure
compliance with applicable regulations.

Public Works Inspector Conducts field inspections to ensure proper construction of new and repaired sewer lines.

Sewer System Management Plan (SSMP)
May 2025

9 Key Support Departments
Other City Departments and outside agencies are currently and will continue to be responsible for carrying out some WDR compliance activities. The key support departments and their responsibilities are described below:

• Building and Safety Division : responsible for issuing permits for sewer connections on private property and for the enforcement of the Plumbing Codes involving proper connection, maintenance of sewer house laterals and illegal discharges into the public sewers.

• County of Los Angeles, Dept. of Public Works – Environmental Programs Division (Formerly Industrial Waste Division): Culver City contracts with the County of Los Angeles to administer the Culver City industrial waste program. The County’s primary task in this capacity is the control of fats, oils and grease.

• County of Los Angeles, Dept. of Public Works – Flood Maintenance Division: would assist Culver City in tracing, containing, and cleaning up of SSOs that reach the County -owned storm drain system.

• Information Technology Division: maintains GIS, electronic mapping and closed circuit television (CCTV) inspection records of the sewer system. Also assists in maintenance and trouble shooting of computer and communication systems that monitor sewer pump stations and alert staff of system alarms.

• Human Resources Division: responsible for recruitment and securing staff.

• City Attorney’s Office : provides legal support and assistance in developing adequate legal authority to regulate illegal discharges into the sewer system and assists in prosecuting violators.

d) Chain of communication for reporting spills from receipt of a complaint or other information, including person responsible for reporting spills to the State and Regional Water Board and other agencies, as applicable. (For example, county health officer, county environmental health agency, and State Office of Emergency Services.)

Chain of Communication

The following chart shows the order of communication to respond to a SSO event. The Incident Commander at the scene will be the person to report the SSO to the appropriate authorities, unless the WDR Engineer is also on site. The Incident Commander can also appoint this task to someone he deems capable.

Sewer System Management Plan (SSMP)
May 2025

10 CULVER CITY SSO PROCEDURES FLOW CHART

SSO Occurs
After Hours?
YES
NO
Detected by the
Public or Telemetry?
Detected by the
Public or Telemetry?
PUBLIC
Call received by
Dispatch. FD and PW
emergency numbers
are called. FD or
PW that is first on
the scene will
attempt
containment.

TELEMETRY
System calls pager
carried by on-call
Sewer Maintenance
Staff
PUBLIC
Call forwarded to
Public Works

TELEMETRY
System calls pagers
carried by Sewer
Maintenance Staff
On-Call Sewer Crew is
dispatched to the SSO
location for
investigation.

Nearest Sewer Crew is
dispatched to the SSO
location for
investigation.

Sewer Crew calls for
help if needed and
stops/contains the SSO.

City Sewer?
Sewer Crew initiates
clean-up activities and
contacts members of
the EPO Division to
notify proper regulatory
agencies (OES)
Sewer Crew contacts
responsible agency for
clean-up and reporting
then contacts EPO who
will verify that proper
regulatory agencies
have been notified
agency
YES
NO

Sewer System Management Plan (SSMP)
May 2025

11 3.0 LEGAL AUTHORITY
The Plan 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:

The Culver City City Council has the authority to make and enforce all rule and regulations necessary for the cleaning, repair, construction, reconstruction, renewal, replacement, operation, and maintenance of collection sewers within the City.

The Culver City Municipal Code (CCMC) Chapter 5.02: Sewers and Chapter 5.05 Stormwater and Urban Runoff Pollution Control have been adopted by City Council to govern aspects of Culver City sewer operations. The legal authorities for the specific areas stipulated in the WDRs are discussed below. The codes, standard plans, specifications and other materials cited in this chapter are filed at the office of the Director of Public Works/City Engineer.

a) 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

Prevention
CCMC Section 5.02.410.A provides that the City’s collection system will accept liquid wastes provided the wastes will not:

1. Damage structures;

2. Create nuisances such as odors;

3. Menace public health;

4. Impose unreasonable collection, treatment or disposal costs on the City;

5. Interfere with wastewater treatment processes;

6. Exceed quality requirements set by regulatory government agencies; or

7. Detrimentally affect the local environment.

To further regulate sewer discharges, CCMC Section 5.02.410.B adopted the following provisions of the County of Los Angeles Code Title 20:

Chapter 20.20, Sections 20.20.010 through 20.20.420, Definitions;

Chapter 20.24, Sections 20.24.010 through 20.24.210, General Provisions; Chapter 20.32, Sections 20.32.440 and 20.32.640 through 20.32.690, Sanitary Sewers; Chapter 20.36, Sections 20.36.010 through 20.36.550, Industrial Waste.

All of the above provide adequate legal authority to prevent infiltration and inflow, stormwater, chemical dumping, unauthorized debris and cut roots, etc.

b) 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;

Sewer System Management Plan (SSMP)
May 2025

12 The City’s pre-planned collaboration and coordination with storm drain agency (County of Los Angeles Department of Public Works). The City operates the storm drain system within the City Limits. Should sewage discharge to a storm drain facility, City staff has full authority mitigate the impact of the spill.

c) Require that sewer system components and connections be properly designed and constructed; Proper Design & Construction
CCMC Section 5.02.020, Connection Specifications, provides construction specifications for the construction of connections to any City sewer. The City has adopted the Standard Specifications for Public Works Construction (SSPWC). The SSPWC is used for th e construction of all sewer facilities constructed in the public right-of-way and inspections are performed by City staff through the Public Works Encroachment Permit process authorized by CCMC Section 5.02.005.

d) Ensure access for maintenance, inspection, or repairs for portions of the service lateral owned and/or maintained by Enrollee;
Accessibility
Through adoption of the portions of Title 20, Division 2 of the Los Angeles County Code, Culver City has the legal right to set requirements that allow unrestricted maintenance access to public sewer infrastructure. This access is secured through enforcement of the requirement for sewer easements around all public sewer appurtenances located in private properties and through prescriptive easements. These easements are detailed by the designer on the sewer construction plans and are reviewed through the it erative plan check process. Plan checkers take special care to ensure that maintenance crews will have room for access and equipment usage for both routine maintenance and replacement or repair construction as necessary. The Title 20 requirements to leave these easements free of obstruction are also reiterated on all sewer plans that contain easements, and the potential for conflict or restriction of access is reviewed carefully during plan check.

e) Enforce any violation of its sewer ordinances , service agreements, or other legally binding procedures;
Enforcement
Under CCMC 5.02.410C and Section 20.24.100 of the LACO Code, the Director of Public Works/City Engineer is empowered to enforce all the requirements prescribed in Division 2 – Sanitary Sewers and Industrial Waste of the LACO Code and in accordance with section 20.24.110 may delegate this authority. LACO Code Section 20.24.160 allows criminal penalties for any violations of the Sewer and Industrial Waste Ordinances.

f) Obtain easement accessibility agreements for locations requiring sewer system operations and maintenance, as applicable.

CCMC Section 15.10.460, Easement Certificate addresses easement requirements for public facilities.

Sewer System Management Plan (SSMP)
May 2025

13 4.0 OPERATION AND MAINTENANCE PROGRAM
The Plan must include the items listed below that are appropriate and applicable to the Enrollee’s system.

4.1 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 valv es, and applicable stormwater conveyance facilities, within the sewer system service area boundaries.

Mapping System
As-built plans of Culver City sewer facilities are maintained by the Engineering Division of the Public Works Department. Record drawings for most of the collection system and pump stations have been scanned and are available through the City’s computer n etwork. The City also maintains a n ArcGIS Geodatabase of the sewer system. The geodatabase includes manhole IDs, diameter , material type, type of flow (gravity/force main), pipe length, and CCTV inspection video info (if available) associated with each pipe segment. In additional, records drawings can be accessed through the sew system ArcGIS geodatabase.

The record drawings provide information such as system locations or alignment, year of construction, pipe material and size, etc. Original Mylars and linens of the record drawings are stored in the Engineering Division Office in City Hall located at 9770 Culver Boulevard, Culver City, California. These maps are distributed to field crews, for work scheduling and for responding to emergencies. Mapping is updated periodically to reflect changes in the system as they occur or when they are detected.

A Preventive map is maintained that tracks when and where preventive maintenance is performed in the system. A map of SSO locations is also maintained to assist in prioritization of maintenance efforts and capital improvements. The SSO locations map is in Appendix D.

A map showing the locations of Pump Stations and Maintenance facilities is presented in Appendix C.

4.2 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:

a) Inspection and maintenance activities;
b) Higher-frequency inspections and maintenance of known problem areas, including areas with tree root problems;
c) 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 area/components prone to root -intrusion potentially resulting in system backup and/or failure.

Sewer System Management Plan (SSMP)
May 2025

14 Preventative Maintenance (PM) Program
Culver City maintenance services and SSO responses are provided from the Culver City Maintenance Facility located at 9505 Jefferson Boulevard in Culver City. The maintenance crews are equipped with some of the latest technologies in the industry that include radio equipped trucks for easy communication, cellular phones, heavy and light construction equipment, vacuum trucks, combination trucks, trailer mounted bypass pumps and bypass hose, generators, close circuit television units for interior inspection of sewer lines and various types of safety equipment. A complete inventory of Culver City equipment is presented in Appendix B.

The cornerstone of Culver City maintenance operation is the preventive maintenance program. This program consists of regular inspection of the sewer system including manholes, pipes, siphons, and pump stations and regular cleaning, repair, replacement of equipment and other related activities. This program is designed and carried out to detect and correct potential problems before they develop into major problems. The following is a summary of the key preventive maintenance activities and where applicable, frequencies for these services have been included:

• Sewer Line and Manhole Inspection
The interior and exterior of manholes are inspected at least annually to detect any structural defects, sewage flow condition, presence of vermin or rodents, deleterious industrial waste, odors and any signs of unusual settlement within sewer manholes main tained by Culver City. These inspections are performed when sewer line cleaning is performed.

• Gas Trap Manholes and Siphons
On a monthly basis, these facilities are inspected and cleared of any stoppages or flow restrictions.

• Drop Manholes
These facilities are inspected and cleared of stoppages and flow restrictions on variable frequencies based on prior inspection records.

• Sewer Line Cleaning
Sewer lines are cleaned by hydro jet or rodding. Frequency of cleaning is based on inspection records. Sewer lines known to accumulate grease or debris are put on, quarterly, semi-annual or annual cleaning schedule, and those prone to root growth are per iodically rodded or chemically treated. Chemical root control is done annually for approximately 108,000 feet (20.5 miles) of pipeline. Trouble areas will have Smart Covers installed and maintained twice a year.

• Vermin and Rodent Control
Sewers infested by vermin are chemically treated. Sewer infested by rodents are baited.

• Sewage Pump Station
The City operates six (6) sewer pump stations. All pump stations are equipped with telemetry/alarm systems and are inspected weekly. Pumps and motors are lubricated, control mechanisms and valves are checked and adjusted quarterly, and equipment is repaired or modified as requi red. Routine maintenance of pump stations is scheduled through the Maintenance Management System (MMS - MaintStar).

• Telemetry/ Emergency Notification System

Sewer System Management Plan (SSMP)
May 2025

15 The City contracts with a third -party vendor to monitor pump station telemetry and the emergency notification systems. This system is a Motorola radio based system. The vendor reviews telemetry performance and performs field inspections on a daily basis.

• Work Scheduling
Most work orders are generated and tracked using the Department’s Maintenance Management System (MMS). The current system was developed and installed by MaintStar. Maintenance regimens have been developed based on past maintenance history and work orders are automatically issued by the system. When work orders are complete, field staff acknowledges completion on the MMS.

The inspection reports and daily activity logs are filed at the Maintenance Operations Office.

4.3 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:

a) The requirements of this General Order;
b) The Enrollee’s Spill Emergency Response Plan procedures and practice drills; c) Skilled estimation of spill volume for field operators; and d) Electronic CIWQS reporting procedures for staff submitting data Staff Training

Culver City staff responsible for the operation and maintenance of the sewer collection system and City inspectors and engineering staff are well versed in sewer construction standards developed by the American Public Works Association. City maintenance c rews attend collection system workshops, seminars, conferences, and training provided by professional groups by California Water Environmental Association (CWEA) , California Association of Sanitation Agencies (CASA) and Clean Water Summit Partners, California Occupational, Safety and Health Administration (CALOSHA), and City engineers attend training provided by California Water Environment Association (CWEA). These trainings will keep them abreast of the latest technology in the industry on how to safely and efficiently carry out their tasks according to current regulations . The City also utilizes informal training approaches, such as tailgate meetings and safety meetings. Maintenance staff receive annual training on the spill emergency response plan, the SSMP, and volume estimations, as well as hands-on drills to practice spill estimation methods.

Records are kept of all training that is provided in support of the SSMP. The records include the date, time, place, content, name of organization(s) and names of attendees. As of May 2025, two (2) sewer crew employees completed Grade IV and one (1) completed Grade III CWEA certifications.

Additionally, sewer construction in Culver City can be performed only by construction companies with verified successful experience working on sewer facilities.

4.4 Equipment Inventory

An inventory of sewer system equipment, including the identification of critical replacement and spare parts.

Sewer System Management Plan (SSMP)
May 2025

16 Equipment Maintenance and Replacement Policy
Culver City has a comprehensive equipment maintenance program. Equipment is regularly checked, adjusted, repaired or replaced as necessary. Maintenance is performed by staff mechanics according to manufacturer-recommended maintenance regimens. Equipment replacement is accomplished through an equipment replacement fund. Funds are set aside annually based on estimated equipment life and replacement cost.

All the critical spare parts have been identified for each station, and Mesmer Low-flow Stormwater Diversion Station is the main storage place for all spare parts. US 3 (third-party telemetry contractor) assists the sewer crew in stocking electrical components and variable speed switches. Each pump station has spare pumps and motors for emergencies. An equipment inventory is included in Appendix B.

Sewer System Management Plan (SSMP)
May 2025

17 5.0 DESIGN AND PERFORMANCE PROVISIONS:

The Plan must include the following items as appropriate and applicable to the Enrollee’s system:

5.1 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 section 8 (System Evaluation, Capacity Assurance and Capital Improvements) of this Attachment, the procedures must include component-specific evaluation of the design criteria.

Design and Construction Standards and Specifications
All sewer construction in Culver City must be performed according to the Standard Plans and Specifications for Public Works Construction developed by the American Public Works Association. The use of these standards ensures that sewer lines and connections are properly designed and constructed.

To further assure that sewer facilities are properly designed and constructed, Culver City requires that plans are designed by licensed engineers and provides thorough review of plans by a California licensed Civil Engineer prior to approval.

APWA Greenbook standards and specifications are used in the construction of sewer facilities and registered civil engineers must design any proposed sewers. Projects initiated and funded by the City are designed either by City engineers or, where addition al expertise is required, consultant engineering support is used.

5.2 Procedures and Standards

Procedures, and standards for inspection and testing of newly constructed, newly installed, repaired, and rehabilitated system pipelines, pumps, and other equipment and appurtenances.

Procedures and Standards for Inspection and Testing
The Culver City Public Works Department provides inspection for the installation of new and rehabilitation of deteriorated collection sewer facilities within the City. City inspectors and staff are well trained in pipeline and pump station construction. They attend training classes and educational seminars to stay familiar with advancements in the industry. The inspectors are also provided with adequate materials to perform their jobs, including the Standard Specifications for Public Works Construction Inspection Manual (the Green Book). The City requires the preparatio n and submittal of “As -Built” plans of completed projects prior to final approval and acceptance of the project as public infrastructure.

Sewer System Management Plan (SSMP)
May 2025

18 6.0 SPILL EMERGENCY RESPONSE PLAN

6.1 Introduction

This section of the SSMP is intended to provide an overview of the City’s sanitary sewer system Spill Emergency Response Plan. This Spill Emergency Response Plan has been developed pursuant to State Water Resources Control Board guidelines requiring all public wastewater collection system agencies in California be regulated under General Waste Discharge Requirements.

6.2 Regulatory Requirements for the Spill Emergency Response Plan Section

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:

a. Notify primary responders, and appropriate local officials, and appropriate regulatory agencies of a spill in a timely manner;

b. Notify other potentially affected entities (for example, health agencies, water suppliers, etc.) of spills that potentially affect public health or reach waters of the State;

c. Comply with the notification, monitoring and reporting requirements of this General Order, State law and regulations, and applicable Regional Water Board Orders;

d. Ensure that appropriate staff and contractors implement the Spill Emergency Response Plan and are appropriately trained;

e. Address emergency system operations, traffic and crowd control and other necessary response activities;

f. Contain a spill and prevent/minimize discharge to waters of the State or any drainage conveyance system;

g. Minimize and remediate public health impacts and adverse impacts on beneficial uses of waters of the State;

h. Remove sewage from the drainage conveyance system;
i. Clean the spill area and drainage conveyance system in a manner that does not inadvertently impact beneficial uses in the receiving waters;

j. Implement technologies, practices, equipment, and interagency coordination to expedite spill containment and recovery;
k. Implement pre-planned coordination and collaboration with storm drain agencies and other utility agencies/departments prior, during, and after a spill event; l. Conduct post-spill assessments of spill response activities; m. Document and report spill events as required in this General Order; and n. Annually, review and assess effectiveness of the Spill Emergency Response Plan, and update the plan as needed.

Sewer System Management Plan (SSMP)
May 2025

19 6.3 SSO RESPONSE PLAN

The following Spill Emergency Response Plan (SERP) complies with all the requirements of the WDR as listed above and is tailored to the City of Culver City.

6.3.1 Initial Notification of SSO and Call-Out

A Notification by SCADA system or SmartCover manhole covers will be issued to the Sewer Lead Worker through automated cell phone notification. If the Sewer Lead Worker is not available, the system will continue to dial phone numbers to contact City staff according to a specified order culminating in telephonic contact to the Director of Public Works/City Engineer. The party successfully notified shall contact the Sewer Maintenance Crew Leader and call the Sewer Maintenance Pager at (310) 917 -2036.

SSOs reported by the public during business hours will be routed to the Public Works Department for response as described above. SSOs reported by the public after business hours will be received by the Fire Department/Police Department who will contact Sewer Maintenance staff through the contacts above.

Upon being notified of the emergency, the Sewer Lead Worker or on -call sewer maintenance staff shall call-out additional staff to the location of the alarm and shall contact the Maintenance Operation Division Manager [(310) 253 -6444] who will be deployed to the site and will assume the role of Incident Commander. Staff shall arrive as quickly as possible and be equipped with equipment and materials necessary to contain the spill.

Environmental Programs and Operation (EPO) Division staff shall be contacted to deploy to the site to assess flow volumes and risk to waters of the United States (Ballona Creek or Marina del Rey Harbor).

EPO staff will determine the Category of the spill as follows:

• Category 1: all discharges of sewage resulting from a failure in the sanitary sewer system that:
a) Result in a discharge of any volume to a drainage channel and/or surface water; or b) Discharge to a storm drain that was not fully captured and returned to the sanitary sewer system
• Category 2: all discharges of sewage resulting from a failure in the sanitary sewer system that:
a) Equal or exceed 1,000 gallons, and
b) Result in a discharge that does not reach a drainage channel, surface water or storm drain; or,
c) Result in a discharge to a storm drain system that is fully captured and returned to the sanitary sewer system.
• Category 3: all discharges of equal to or greater than 50 gallons, and less than 1000 gallons, that does not discharge to a surface water.
• Category 4: all discharges possessing the same characteristics of a Category 3 SSO except the volume of discharge is less than 50 gallons.
• Enrollee Owned and/or Operated Lateral Sewage discharges that are caused by blockages or other problems within enrollee owned lateral.
• Private Lateral Sewage Discharges: sewage discharges that are caused by blockages or other problems within a private owned lateral.

If the spill is determined to be Category 1, EPO staff will report the spill to California Office of Emergency Services (CalOES) at (800) 852 -7550 as soon as is practicable but no later than 2 hours from the City

Sewer System Management Plan (SSMP)
May 2025

20 becoming aware of the spill and will obtain a Notification Control Number for the spill. EPO staff will consult with operations staff to determine the estimated start time of the spill and the flow rate of the spill. EPO staff will also take sufficient photographs to document the spill response, containment activities and clean-up. EPO staff will also document the SSO discharge point to use in estimating the discharge volume.

6.3.2 Containment

The primary goal in the spill response is containment. To accomplish containment a minimum, two combination trucks shall be deployed to the SSO location. One Combination truck shall be deployed to contain and vacuum extract SSO discharges such that discharges to the storm drain are minimized or prevented. The other combination truck shall be deployed to the site of the sewer blockage to remove the blockage and restore sewer operation . If the blockage cannot be removed within a short period of time (say 30 minutes), a bypass pump shall be deployed to pump around the blockage. If the spill is the result of pump station or force main failure, staff shall deploy a bypass pump using suction and discharge hoses leading from the pump station wet well and connected to a bypass connection on the force main (if the force main is so equipped) or to a manhole draining to an adjacent sewage drainage area (refer to GIS map book to identify available discharge locations).

If any sewage has entered the storm drain, construct a containment dam where the storm drain outlets to Ballona Creek and station a combination truck at the outlet to vacuum extract all contained sewage. In areas that drain to Marina del Rey Harbor, a containment dam will not be required due to the existence of a low flow diversion facility that diverts all dry-weather flow to the sanitary sewer for treatment at the Hyperion Treatment Plant.

6.3.3 Traffic Control and Protection of Public
The incident first responder shall assess whether traffic control and/or barricades are required to provide a safe working area and to protect the public from contacting the spill area.

6.3.4 Additional Resources

If additional resources are required (e.g. additional pumps, combination trucks, baker tanks etc.) contact the vendors listed later in this section.

6.3.5 Cleanup

Once the sewer blockage has been cleared or pump station has been returned to service, the cleanup phase begins. Sewer crews will leave all containment berms and dams in place and will begin washing all surfaces contacted by the spill. A 20:1 bleach/simple green solution shall be used on all streets and other paved surfaces and only clean water shall be used within underground storm drains. All wash water shall be captured and disposed of in the sanitary sewer. A contractor may be called to assist with clean -up activities. (i.e. Ocean Blue Environmental Services, Inc. (562-624-4127))

6.3.6 Estimated Spill Volume
EPO staff will take measurements and photographs required to estimate the flow rate of the spill.

Photographs of the manhole discharge condition shall be compared to the photographs in Appendix F.

Other spill volume methods that may be used are described in Appendix F.

Sewer System Management Plan (SSMP)
May 2025

21 6.3.7 Monitoring
Staff shall visually assess the spill location(s), spread, and entry point of the drainage conveyance system using photography. If the amount of the spill equal or exceeds 50,000 gallons to surface waters, the City must sample waters within Ballona Creek within 18 hours of becoming aware of the SSO. Samples shall be taken upstream and downstream of where the spill entered the Creek each day of the duration of the spill. The samples shall be taken using special vessels provided by the City’s contracted laboratory, placed on ice and transported to the laboratory (see contact for Sewage Spill Sampling Laboratory listed later in this section).

If the spill enters Ballona Creek upstream of National Boulevard, the samples shall be tested for:

a. Ammonia
b. E-coli
If the spill enters Ballona Creek downstream of National Boulevard, the samples shall be tested for:
c. Ammonia
d. E-coli, coliform, enterococcus

Sample analysis must be conducted according to sufficiently sensitive test methods approved under 40 Code of Federal Regulations Part 136 for the sample analysis of pollutants.

6.3.8 Spill Reporting
EPO staff must enter information on any category spill into the California Integrated Water Quality System (CIWQS) at the following web address https://ciwqs.waterboards.ca.gov/ciwqs/index.jsp. A draft of the report shall be entered within three (3) business days and the final report shall be certified by the Legally Responsible Official (Director of Public Works/City Engineer) within 15 calendar days of the spill.

6.3.9 Technical Report

If a Category1 spill exceeds 50,000 gallons a technical report must be prepared and uploaded to the CIWQS by EPO within 45 calendar days of the spill. The required format of the technical report is indicated in Order No. 2022-0103-DWQ (Attachment E1 Section 3.1.3).

6.3.10 Agencies Coordination
The City should act as the first responder when a spill is discovered. If any sewage enters the storm drain system, immediately contact the L.A. County Department of Health Services, L.A. county Public Works Flood Control Division, and The L.A. Regional Water Quality Control Board. Staff must contain the spillage immediately by building berms around the spills using sandbags , absorbent, and vac truck, blocking openings of nearby storm drain catch basins using sandbags /absorbent, then determine the generation point of the spill (Culver City line, City of Los Angles Trunk line, or private property, etc.).

If City of Los Angeles generated it, contact City of Los Angeles Bureau of Sanitation and request restriction clearance. Staff should continue to maintain containment of the spill until city of Los Angeles crews arrive.

Once City of Los Angeles crews are on scene, the City of Los Angeles is responsible for clearing the blockage (if not already done) and for cleanup, but the first responder maintains responsibility for ensuring that the area is returned to its natural state.

The staff will investigate the spill incident and must fill out a Sewer Spill Report form after a spill event.

Sewer System Management Plan (SSMP)
May 2025

22 6.4 Emergency Notification Tree
Below is the flow chart that indicates the method of emergency notification in the case of a SSO.

SSO Occurs
After Hours?
Detected by the
Public or Telemetry?
Detected by the
Public or Telemetry?
PUBLIC
Call received by
Dispatch. FD and PW
emergency numbers
are called. FD or PW
that is first on the
scene will attempt
containment.

TELEMETRY
System calls pager
carried by on-call
Sewer Maintenance
Staff
PUBLIC
Call forwarded to
Public Works

TELEMETRY
System calls pagers
carried by Sewer
Maintenance Staff
On-Call Sewer Crew is
dispatched to the SSO
location for investigation.

Nearest Sewer Crew
is dispatched to the
SSO location for
investigation.

Sewer Crew calls for help
if needed and
stops/contains the SSO.

City Sewer?
Sewer Crew initiates
clean-up activities and
contacts members of
the EPO Division to
notify proper regulatory
agencies (OES)
Sewer Crew contacts
responsible agency for
clean-up and reporting
then contacts EPO who
will verify that proper
regulatory agencies
have been notified
agency
YES
NO
YES
NO

Sewer System Management Plan (SSMP)
May 2025

23 6.5 Emergency Notification Contacts
Below is critical contact information and required timing of notifications.

SSO NOTIFICATION CONTACT NUMBERS

AGENCY INFO
CATEGORY 1 CATEGORY 2 CATEGORY 3 CATEGORY 4
any gallons
not all contained
>1,000 gallons &
all contained
<1000 & >50
gallons
all contained
<50 gallons &
all contained
CULVER CITY PUBLIC WORKS:

Yanni Demitri
Director of PW/City Engineer
(310) 253-5630
(818) 200-3083
Sean Singletary
EPO Div. Manager
(310) 253-6457
(213) 925-6589
Gary Wansley
Maintenance Ops. Div. Manager
(310) 253-6444
(310) 367-5825

May Ng,
WDR (Sewers) Engineer (310) 253-6406
Jesse MacGregor
Sewer Crew Leader
(310) 253-6599
(310) 776-2767 Immediately ASAP ASAP ASAP
Jesse Oronoz
Maintenance Ops. Supervisor
(310) 253-6410
(310) 694-6484
Javier De La Cruz
Senior Civil Engineer (NPDES) (310) 253-6421
Hong Wang
Senior Civil Engineer (310) 253-5604
Sewer Stand-by Phone (310) 384-7362
Sewer Stand-by Pager (310) 917-2036
Sewer Lift Station Worker (310) 253-6598
Mate Gaspar,
Engineering Services Div. Mgr. (310) 253-5602 As needed As needed As needed As needed Culver City Fire HazMat (310) 253-5925
California Emergency
Management Agency (CalOES)
(800) 852-7550
24-hour reporting
Immediately
(within 2 hours)
Immediately
(within 2 hours) -- --
State Water
Resources Control
Board (SWRCB)
Submit info on this page at
http://ciwqs.waterboards.ca.gov/
Within 3
business days
Within 3
business days
30 calendar
days Monthly
Submit SSO Technical Report if spill
≥50,000 gallons (Order No. 2022-
0103DWQ Attachment E1 Section

3.1.3)
Within 45
calendar days -- --
Los Angeles
Regional Water
Quality Control
Board (LARWQCB)
(213) 576-6657; business hours
(213) 305-2253; non-business hours
(213) 620-6140; fax
-- -- -- --

Sewer System Management Plan (SSMP)
May 2025

24 Los Angeles County
Department of
Health Services
(DHS)
(213) 974-1234; 24-hour reporting
(626) 430-5420 ASAP ASAP ASAP ASAP
Los Angeles County
Flood Control
District
(818) 896-0594
(818) 248-3842; business hours
only
-- -- -- --

6.6 Outside Resources Contact List

Sewage Spill Response Companies

Baker Tanks
5500 Rawlings Avenue
South Gate, CA 90280
(562) 904-3681

Ocean Blue (Environmental Services, Inc.)
925 W. Esther Street
Long Beach, CA 90813
(562) 624-4120
Justin Lee
United Pumping Service, Inc.
14000 E. Valley Boulevard
City of Industry, CA 91746
(626) 961-9326

Sewage Spill Sampling Laboratory

Ocean Blue (Environmental Services, Inc.)
925 W. Esther Street
Long Beach, CA 90813
(562) 624-4120
Justin Lee

6.7 Outside Agency Notification Numbers

A. City of Los Angeles
a. If spill is originating from a City of Los Angeles Trunk Line City of Los Angeles – Bureau of Sanitation
Phone: (213) 485-7575 (Sewage Spill Hotline Main #)
Phone: (213) 485-5391 (Sewage Spill Hotline Weekdays, 6:30AM – 1:00AM) Phone: (310) 823-5507; (310) 822-0777 (Night Emergencies, 1:00AM – 6:30AM)

B. County of Los Angeles
a. When sewage enters storm drain system
L.A. County Department of Public Works
Floor Maintenance Division
Phone: (800) 675-4357, ext. #1

Sewer System Management Plan (SSMP)
May 2025

25 b. Call ONLY if storm drain is compromised or if spills enter receiving water(s) L.A. County Department of Health Services
Phone: (626) 430-5420, After hours: (213) 974-1234

C. California Emergency Management Authority
a. If spill exceeds 1,000 gallons or presents hazard to human health or environment Hazardous Spills Notification
Phone: (800) 852-7550

D. Other Agencies (to request assistance)
a. City of Los Angeles: (213) 485-7575
b. County of Los Angeles: (800) 675-HELP (4357)
c. City of Hawthorne: (213) 216-2356 (Richard Carver)
d. City of El Segundo: (310) 524-2760
e. City of Manhattan Beach: (310) 802-5320; (310) 345-2442 (Justin Gervais) f. MB Police Station: (310) 802-5100

E. Regional Water Quality Control Board
a. When sewage spill enters the storm drain system
Technical Support Unit – Spills Report Duty Officer
(213) 576-6720, if no answer, (213) 576-6600
After hours: (213) 774-4238
Fax: (213) 576-6640

F. California Coastal Commission
a. When sewage spill enters coastal waters or have the potential to enter coastal waters (805) 585-1816; (562) 590-5071

G. California Department of Fish and Game
a. When sewage spill enters coastal waters or have the potential to enter coastal waters (562) 708-7757; (562) 342-7214

F. Public Utilities
a. Golden State Water (310) 838-2143
b. So Cal Edison (800) 990-7788 Bus / (800) 684-8123 Res c. So Cal Gas (800) 427-2000 Bus / (800) 427-2200 Res
d. LA Dept of Water & Power (800) 342-5397
e. State Hwy/Caltrans (213) 620-5789

6.8 Training and SERP Review

Sewer crews and key employees will be trained annual to ensure they understand and follow the Spill Emergency Response Plan. EPO staff and sewer crew leader will review and assess the effectiveness of the Spill Emergency Response Plan on an annual basis, and the plan will be updated as needed.

Sewer System Management Plan (SSMP)
May 2025

26 7.0 SEWER PIPE BLOCKAGE CONTROL PROGRAM
The Sewer System Management Plan 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:

a) An implementation plan and schedule for a public education outreach program that promotes proper disposal of pipe-blocking substances;

Public Education Outreach Program
Culver City contracts with the County of Los Angeles Department of Public Works, Environmental Programs Division (Formerly Industrial Waste Division) (LACDPW) to implement its FOG program.

LACDPW staff inspect restaurants and industrial facilities to assure that appropriate grease interception devices are installed and maintained. Inspectors provide information on proper installation, mainte nance and operation of pretreatment facilities. LACDPW staff also review development plans to determine and require pretreatment facilities if they are deemed necessary.

City staff work closely with LACDPW staff and assist with enforcement actions when n eeded. Staff also perform public outreach by publishing educational information in the City’s Environmental Programs website newsletter to remind and educate residents/businesses not to flush any wipes and drain any grease into the sewer system.

b) 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;

Disposal
Solidified fats found in the collection system during cleaning operations are trapped, collected and taken to the maintenance yard dump bins. These and other debris collected from the system are properly disposed of. FOG in liquid form is flushed down by hydro jetting to City of Los Angeles’ treatment facilities for treatment and disposal.

c) The legal authority to prohibit discharges to the system and identify measures to prevent spills and blockages;
Legal Authority
The legal authority to prohibit discharges of FOG into the sewer system is discussed in Chapter 3 of this document. Requiring grease interceptors at food establishments to prevent the discharge of grease to the collection sewer system and educating the pu blic on proper disposal methods for FOG are also discussed.

Culver City, under CCMC 5.02.410 and LACO Code Section 20.36.400, prohibits the discharge of wastes that will damage the system or cause interference with conveyance or treatment processes.

Additionally, non-residential discharges are specifically subject to additional regulation as may be required to protect the sewer system or to maintain its operation. Additional regulations would take

Sewer System Management Plan (SSMP)
May 2025

27 the form of the installation of grease interceptors at restaurants and other food establishments that generate grease. Through adoption of LACO Code Section 20.24.090, Culver City has the legal authority to inspect main-line sewers, sewage pumping plants, interceptors, etc., as often as deemed necessary to verify that such facilities are maintained and operated in accordance with the provisions of Division 2 of LACO Code.

Culver City contracts with the County of Los Angeles Department of Public Works, Environmental Programs Division (Formerly Industrial Waste Division) (LACDPW) for the control of deleterious substances. LACDPW administers the Industrial Waste Permit program in Culver City that reviews development plans and requires pre-treatment devices where warranted. LACDPW also administers the commercial site inspection program used to verify compliance with permit conditions and to verify proper maintenance of pretreatment devices.

d) 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;

Grease Removal Devices
As provided in CCMC Section 5.02.410.B, the Director of Public Works/City Engineer is authorized to enforce Title 20, Division 2, Section 20.24.100. Pretreatment devices are required for industrial waste generating facilities, including restaurants and oth er food establishments. They are required to be designed in accordance with County Industrial Waste standards and installed and operated in a manner to control discharges of FOG into the sanitary sewer system. If there is a FOG related problem associated with an industrial waste permit, City staff will take enforcement action against the permittee.

The City does not issue permits or inspect domestic sewage disposal to the sanitary sewer system.

However, the LACO Code prohibits the discharge of “any material which may create a public nuisance, or menace to the public health or safety, or which may po llute underground or surface waters, or which may cause damage to any storm -drain channel or public or private property” (Section

20.36.010). If during inspection of the sanitary sewer system City staff determines that a FOG related problem exists and is traceable to a domestic sewage source of such character that is not satisfactory (Section 20.20.100), under the County Code, pretreatment could be required or the discharge required to be eliminated. Domestic waste containing FOG can lead to SSOs which ar e public nuisances, and California Health and Safety Code Division 5, Part 3, Chapter 6, Article 2 can also be used to impose appropriate domestic sewage discharge requirements.

e) 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;

Authority to Inspect
As discussed in Chapter 3 of this document Culver City has the legal authority to inspect and enforce the Los Angeles County FOG ordinances. As mentioned above, the City has contracted with the County of Los Angeles Department of Public Works, Environment al Programs Division (LACDPW) to implement its FOG Program. LACDPW has adequate staff to conduct inspections of pretreatment facilities at all permitted food establishments within Culver City through a permit program. Fees generated through the permit program fund the City FOG program.

Sewer System Management Plan (SSMP)
May 2025

28 f) An identification of sanitary sew er system sections subject to fats, oils, and grease b lockages and establishment of a cleaning schedule for each section; and Cleaning Schedule
Experience has shown that FOG contributes to about 30% of the total number of SSOs that occur in Culver City sewer collection system. The remaining 70% is attributable to tree root intrusion into the system and other causes. As indicated in Chapter 4 of this document, FOG prone sections of the collection system are identified during routine maintenance operations and investigation of stoppages and SSOs. These are typically cleaned by hydro jetting and rodding if tree roots are encountered. Those portion s of the system found to have persistent FOG problems are cleaned quarterly or more frequently if required. Furthermore, areas of the collection system with persistent FOG problems are referred to LACDPW for additional investigation and enforcement actions.

g) Implementation of source control measures for all sources of fats, oils, and grease reaching the sanitary sewer system for each section identified in (f) above.

Source Control Measures
The LACDPW FOG program investigates and identifies sewer users that contribute FOG to the City’s system. When a source is discovered, steps are taken to ensure SSO does not occur. Such source control measures include the requirement that pretreatment sys tems be installed and maintained adequately to remove as much FOG as practicable.

A product known as “Minimizer Liq” has been installed in seven (7) upstream manholes to prevent and reduce fats, oils, and grease (FOG) buildup that leads to SSOs and backups. The minimizer liq will breakdown the grease in the sewer mains and will be refilled once a month.

Sewer System Management Plan (SSMP)
May 2025

29 8.0 SYSTEM EVALUATION, CAPACITY ASSURANCE, AND CAPITAL IMPROVEMNETS The Plan must include procedures and activities for: Routine evaluation and assessment of system conditions; Capacity assessment and design criteria; Prioritization of corrective actions; and A capital improvement plan.

8.1 System Evaluation and Condition Assessment
The Plan must include procedures to:
a) Evaluation the sanitary sewer assets utilizing the best practices and technologies available; b) Identify and justify the amount (percentage) of its system for its condition to be assessed each year;
c) Prioritize the condition assessment of system area 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 a receiving water with a bacterial-related impairment on the most current Clean Water Act section 303(d) List;
d) Assess the system conditions using visual observations, video surveillance and/or other comparable system inspection methods;
e) Utilize observations/evidence of system conditions that may contribute to exiting of sewage from the system which can reasonably be expected to discharge into a water of the State; f) Maintain documents and recordkeeping of system evaluation and condition assessment inspections and activities; and
g) 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.

System Evaluation and Condition Assessment

Sewer facilities assessment is an integral part of Culver City’s preventive sewer maintenance program.

The assessment of a collection system involves every component of the City collection system including pipeline, manholes, pump stations, and siphons. Through the condition assessment described below, the City identifies portions of the system that require rehabilitation or replacement. Ongoing projects that complete localized sewer pipe repair of trenchless repair or lining are completed annually. Ongoing sewage pump station improvements include moving the electrical control panels to above ground, piping reconfiguration, communications, construction of r edundant force mains to provide a more failsafe system, and installation a secondary level sensor in the pump stations wet well. Additionally, City made a significant investment in 2020 to build a new and state-of-art pump station (Bankfield) to replace three outdated existing pump stations and reduce the potential of sewer overflows. The diversion of two pump stations was completed in 2022, and the third pump station will be completed in 2026.

Sewer pipelines in Culver City are made predominantly of vitrified clay with some plastic (VCP) and polyvinyl chloride (PVC) lines also in the system. Majority of the pipe sizes range from six to fifteen inches in diameter. The risk of system failures increase with system age. Root intrusion and construction incursions are the primary sources of structural damage. Conditions of concern include cracking, offset

Sewer System Management Plan (SSMP)
May 2025

30 joints and broken pipes which could lead to collapse and blockages. Excessive infiltration, the potential for exfiltration, overflow, and other potential service interruptions are also areas of concern.

In an effort to overcome these challenges, the City inspected all 87 miles of sewer lines in 2015 using a video inspection service and installed a lateral sealing system. These inspections identified deterioration resulting in several sewer rehabilitation projects. The City CCTV inspects all gravity main s on a ten-year cycle. The new CCTV inspection cycle for sewer mains began in January 2025. Approximately 50 miles of sewer mains will be inspected, with the remainder to be completed in 2026/2027.

Maintenance history, past overflow records, sewer locations, and age will be some of the factors used to prioritize the CCTV schedule. The City’s GIS system is be ing upgraded to inc lude all CCTV records accessible through the GIS system.

8.2 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:

a) Dry-weather peak flow conditions that cause or contributes to spill events; b) The appropriate design storm(s) or wet weather events that causes or contributes to spill events; c) The capacity of key system components; and
d) Identify the major sources that contribute the peak flows associated with sewer spills.

The capacity assessment must consider:

a) Data from existing system condition assessments, system inspections, system audits, spill history, and other available information;
b) Capacity of flood-prone systems subject to increased infiltration and inflow, under normal local and regional storm conditions;
c) Capacity of systems subject to increased infiltration and inflow due to larger and/or higher - intensity storm events as a result of climate change;
d) Increases of erosive forces in canyons and streams near underground and above-ground system components due to larger and/or higher-intensity storm events; e) Capacity of major system elements to accommodate dry weather peak flow conditions, and updated design storm and wet weather events; and
f) Necessary redundancy in pumping and storage capacities.

Adequate Capacity and Design Criteria

Culver City’s Public Works Department is staffed with engineers and technical personnel trained in proper and safe design and construction of sanitary sewer systems. The maintenance crews evaluate pump stations and sewer lines on a regular basis to detect any system capacity deficiencies. Presently, the City’s sewer system appears to possess sufficient capacity. In 2016-17, City completed a Sewer System Master Plan to verify system capacity and to detect any deficiencies . This Master Plan recommend a cap ital improvement plan to address any system deficiencies or system deterioration. The next sewer master plan will be updated in 2031-32.

Sewer System Management Plan (SSMP)
May 2025

31 The City does not accept stormwater into its wastewater collection system and prohibits storm drainage connections such as roof downspouts, foundation drains, area drains, and other sources of surface runoff or groundwater that intentionally introduce inflow into the collection system. The City may use specialized inspections such as smoke testing to identify illicit connections, and issues corrective action notices as the first step of enforcement to eliminate such inflow sources from the collection system.

Title 20, Division 2 of the L.A. County Code as adopted by Culver City provides the legal responsibility for ensuring sound and functional design of the public sewer infrastructure. The L.A. County Code also forms the basis upon which sewer construction plans are designed and plan checked.

During the development process, developers must perform a study to determine the impacts of flow to be added to the system. The study will analyze the capacity in the existing system and will set forth mitigation requirements to ensure adequate capacity. The study will also justify the sizing of proposed lines to accommodate the peak flows from all areas tributary to the impacted mainline sewer or pumping station using present and estimated future flows. Permits for construction of any public sewer infrastructure are not issued until the iterative plan check process has been satisfactory completed, thus insuring the functional design and adequate capacity of the public sewer collection system.

8.3 Prioritization of Corrective Action

The findings of the c ondition assessments and capacity assessments must be used to prioritize corrective actions. Prioritization must consider the severity of the consequences of potential spills.

Prioritization of Corrective Action
The City complete d a Sewer System Master Plan in 2016-17. This Master Plan recommended a capital improvement plan to address any system deficiencies and/or system deterioration. The most significant capacity deficiency will be addressed in the short -term CIP. Lesser deficiencies will be addressed in the long-term CIP.

Some deteriorated lines are discovered during preventive maintenance and televi sed inspections of troublesome sewer lines . These lines are either immediately repaired by City crews or by on-call emergency contractors or are added to the list of future Capital Improvement Projects (CIPs). In compliance with WDR’s, all sewer pipe segments within Culver City found to have structural deficiencies will continue to be rehabilitated or reconstructed thr ough the Sewer CIP. Many hydraulic deficiencies within the system have been addressed through previous CIP projects.

8.4 Capital Improvement Plan

The capital improvement plan must include the following items:

a) Project schedules including completion dates for all portions of the capital improvement program;
b) Internal and external project funding sources for each project; and

Sewer System Management Plan (SSMP)
May 2025

32 c) 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.

CIP Schedule

Collection system CIP projects routinely involve close coordination between Engineering staff, Operations Department staff, Sewer staff, engineering design consultants, construction management and inspection consultants, contractors, other public agencies and utility companies throughout all project stages including planning/pre -design, design, and construction. Each CIP will have its own completion date. The SSMP will be modified accordingly to each CIP’s progress and completion. In 1987, Culver City established the Sewer Enterprise Fund for the maintenance and improvement of the collection system. All CIP funding will come from this sewer enterprise fund.

Sewer System Management Plan (SSMP)
May 2025

33 9.0 MONITORING, MEASUREMENT, AND PROGRAM MODIFICATIONS The Plan must include an Adaptive Management section that addresses Plan-implementation effectiveness and steps for necessary Plan improvement, including:

a) Maintain relevant information, including audit findings, to establish and prioritize appropriate Plan;
Database & Record Keeping
All data and records are kept on the Maintenance Management System (MMS – MaintStar) of the Public Work’s Maintenance and Operations Division. This system also generates and track work orders for the sewer crews. Daily maintenance records are archived in hard copy format in the office of the WDR engineer.

b) Monitoring the implementation and measuring the effectiveness of each Plan Element;

Implementation and Effectiveness of Plan
Relevant data on all work done in the implementation/execution of the SSMP program shall be documented in the MMS and used in preparing Culver City monthly summary of workload indicators.

These data are used in the evaluation of the effectiveness of the overall program.

c) Assessing the success of the preventative operation and maintenance activities; Assessment of Preventative Maintenance Activities
The effectiveness of the program shall be monitored and tracked by Culver City Maintenance staff.

The primary goal of the SSMP is the reduction/elimination of SSOs, therefore, the primary measure of effectiveness of the SSMP is the number of SSOs encountered. Other measures will be total number of category 1, 2, 3, and 4 SSOs, overflow response time, reduction in repeated incidents of overflow at same location and reduction in number of overflows caused by flows exceeding the capacity of the collection system including pump stations.

The City experienced a total of 16 sewer overflow (all categories) events from 2019 to 2025. Most spills during this time, nine (9) were between 1 and 100 gallons, and spills from 101 to 999 gallons totaled five (5). Only one (1) spill greater than 1,000 gallons occurred during this timeframe. The total volume reached of surface water has been reduced from 3 9% (1,297 gallons) to 12% (482 gallons) since 2019. The City has averaged 0.33 spills per 100 miles of sewer. The City spill rate over this period remained below the State average of 1.77 spills per 100 miles of sewer and Regional average of 0.46 per 100 miles of sewer. The City is making every effort to reduce the impact on receiving waterways and public health. Smart covers were installed at these locations to allow preventive measures to be performed to prevent the SSO.

d) Updating Plan procedures and activities, as appropriate, based on results of monitoring and performance evaluations; and
Updates
Based on the above monitoring measures, the SSMP will be updated or modified as necessary.

Sewer System Management Plan (SSMP)
May 2025

34 e) Identifying and illustrating spill trends, including spill frequency, location, and estimated volumes.

Trending and Analysis of SSOs
The locations of SSO occurrences are plotted annually on City maps (Appendix D). The causes of the SSO are also recorded. These maps are used for establishing SSOs patterns, identifying hot spots as indicated by clusters on the maps, and for scheduling work assignments. The SSO numbers are also depicted in tables. The tables are used to identify SSO trends and to evaluate overall SSMP program success especially by comparing the graphs to different years and with results from other sewer agencies.

Sewer System Management Plan (SSMP)
May 2025

35 10.0 SSMP PROGRAM AUDITS

The Plan 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 this General Order.

Program Audit
Culver City will conduct an internal audit and prepare a report every three years. The audit shall focus on evaluating the effectiveness of the SSMP and compliance with the SSMP requirements including identification of any deficiencies in the SSMP and steps to correct them. The audit shall also rely on interviews with key personnel, observations, equipment inspections and review of records, etc. The most recent report of the audit must be kept on file in the Public Works Department with a copy at the fie ld maintenance yard and on CIWQS for periodic review and assessment.

The SSMP shall be updated and certified every six years by the Director of Public Works or authorized representatives to be in compliance with the requirements set forth in the WDR’s and be presented to the City Council for approval at a public meeting. The Culver City authorized representative must also complete the certification portion in the Online SSO Database.

When significant amendments are made to any portion or portions of the SSMP, it must be resubmitted to the City Council for approval and re-certification. The re-certification shall be in accordance with the certification process described above.

Sewer System Management Plan (SSMP)
May 2025

36 11.0 COMMUNICATION PROGRAM
The Plan must include procedures for the Enrollee to communicate with:
a) 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.
b) Owners/operators of systems that connect into the Enrollee’s system, including satellite systems, for:

System operation, maintenance, and capital improvement-related activities.

System
Communication
When the City experiences a spill, it is standard procedure to immediately secure the affected area and keep the public away. This is generally done using barricades, cones, and caution tape. Should the City experience a spill that may require closure of public areas or enter a source of drinking water, signs will be immediately placed indicating the issue and providing contact information. Staff will remain on site to provide an additional safety factor until appropriate authorities respond and direct otherwise. In all cases, the City will follow the advice of higher authorities, such as the local environmental health department and other regulatory authorities.

Culver City will provide all stakeholders and interested parties with status updates on the development and implementation of the SSMP and consider comments made by them. Culver City may use media such as, annual reports, notices in newspapers, and the City’s web site to convey this information.

Copies of the SSMP will be maintained in the Culver City Maintenance Facility and on the City’s Website. The document will also be made readily available to Regional Water Quality Control Board representatives upon request and to the operators of any coll ection system or treatment facility downstream of Culver City’s system.

The City has a contract with the City of Los Angeles. Both cities update one another with new projects and maintenance.

Sewer System Management Plan (SSMP)
May 2025

37 APPENDIX A

SWRCB ORDER NO. 2022-0103-DWQ

Sewer System Management Plan (SSMP)
May 2025

38 Sewer System Management Plan (SSMP)
May 2025

39 Sewer System Management Plan (SSMP)
May 2025

40 Sewer System Management Plan (SSMP)
May 2025

41 Sewer System Management Plan (SSMP)
May 2025

42 Sewer System Management Plan (SSMP)
May 2025

43 Sewer System Management Plan (SSMP)
May 2025

44 Sewer System Management Plan (SSMP)
May 2025

45 Sewer System Management Plan (SSMP)
May 2025

46 Sewer System Management Plan (SSMP)
May 2025

47 Sewer System Management Plan (SSMP)
May 2025

48 Sewer System Management Plan (SSMP)
May 2025

49 Sewer System Management Plan (SSMP)
May 2025

50 Sewer System Management Plan (SSMP)
May 2025

51 Sewer System Management Plan (SSMP)
May 2025

52 Sewer System Management Plan (SSMP)
May 2025

53 Sewer System Management Plan (SSMP)
May 2025

54 Sewer System Management Plan (SSMP)
May 2025

55 Sewer System Management Plan (SSMP)
May 2025

56 Sewer System Management Plan (SSMP)
May 2025

57 Sewer System Management Plan (SSMP)
May 2025

58 Sewer System Management Plan (SSMP)
May 2025

59 Sewer System Management Plan (SSMP)
May 2025

60 Sewer System Management Plan (SSMP)
May 2025

61 Sewer System Management Plan (SSMP)
May 2025

62 Sewer System Management Plan (SSMP)
May 2025

63 Sewer System Management Plan (SSMP)
May 2025

64 Sewer System Management Plan (SSMP)
May 2025

65 Sewer System Management Plan (SSMP)
May 2025

66 Sewer System Management Plan (SSMP)
May 2025

67 Sewer System Management Plan (SSMP)
May 2025

68 Sewer System Management Plan (SSMP)
May 2025

69 Sewer System Management Plan (SSMP)
May 2025

70 Sewer System Management Plan (SSMP)
May 2025

71 Sewer System Management Plan (SSMP)
May 2025

72 Sewer System Management Plan (SSMP)
May 2025

73 Sewer System Management Plan (SSMP)
May 2025

74 Sewer System Management Plan (SSMP)
May 2025

75 Sewer System Management Plan (SSMP)
May 2025

76 Sewer System Management Plan (SSMP)
May 2025

77 Sewer System Management Plan (SSMP)
May 2025

78 Sewer System Management Plan (SSMP)
May 2025

79 Sewer System Management Plan (SSMP)
May 2025

80 Sewer System Management Plan (SSMP)
May 2025

81 Sewer System Management Plan (SSMP)
May 2025

82 Sewer System Management Plan (SSMP)
May 2025

83 Sewer System Management Plan (SSMP)
May 2025

84 Sewer System Management Plan (SSMP)
May 2025

85 Sewer System Management Plan (SSMP)
May 2025

86 Sewer System Management Plan (SSMP)
May 2025

87 Sewer System Management Plan (SSMP)
May 2025

88 Sewer System Management Plan (SSMP)
May 2025

89 Sewer System Management Plan (SSMP)
May 2025

90 Sewer System Management Plan (SSMP)
May 2025

91 Sewer System Management Plan (SSMP)
May 2025

92 Sewer System Management Plan (SSMP)
May 2025

93 Sewer System Management Plan (SSMP)
May 2025

94 Sewer System Management Plan (SSMP)
May 2025

95 Sewer System Management Plan (SSMP)
May 2025

96 Sewer System Management Plan (SSMP)
May 2025

97 Sewer System Management Plan (SSMP)
May 2025

98 Sewer System Management Plan (SSMP)
May 2025

99 Sewer System Management Plan (SSMP)
May 2025

100

Sewer System Management Plan (SSMP)
May 2025

101

Sewer System Management Plan (SSMP)
May 2025

102

Sewer System Management Plan (SSMP)
May 2025

103

Sewer System Management Plan (SSMP)
May 2025

104

Sewer System Management Plan (SSMP)
May 2025

105

Sewer System Management Plan (SSMP)
May 2025

106

Sewer System Management Plan (SSMP)
May 2025

107

Sewer System Management Plan (SSMP)
May 2025

108

Sewer System Management Plan (SSMP)
May 2025

109

Sewer System Management Plan (SSMP)
May 2025

110

Sewer System Management Plan (SSMP)
May 2025

111

Sewer System Management Plan (SSMP)
May 2025

112

Sewer System Management Plan (SSMP)
May 2025

113

Sewer System Management Plan (SSMP)
May 2025

114

Sewer System Management Plan (SSMP)
May 2025

115

Sewer System Management Plan (SSMP)
May 2025

116

Sewer System Management Plan (SSMP)
May 2025

117

Sewer System Management Plan (SSMP)
May 2025

118

Sewer System Management Plan (SSMP)
May 2025

119

APPENDIX B

CULVER CITY EQUIPMENT INVENTORY

and

VEHICLE SAFETY INSPECTION CHECKLIST

Sewer System Management Plan (SSMP)
May 2025

120
Bankfield Pump Station (5722 Bankfield Ave)

DATE ISSUED ITEM COMMENTS
04-30-2025 Control Panel (Tesco) HMI on/off power switches ATS (Automatic Transfer Switch) Inside
2 – Submersible Pumps In wet well
1 – Godwin Xylem Brand Bypass trash pump hook-up to valve 1 – Cummins Generator Model #C150-D6D
2 – Rebuilt Pumps Spare outside in wood crates
1 – 4-foot Folding Ladder Inside control room
1 – 24-foot Extendable Ladder Extend to 40-foot inside shed 6 – 50’ 2-1/2” Soft Hose For fire hydrant use
1 – Wet Well Pressure Sensor New spare in block shed
4 – Fuel Cans 2 Diesel & 2 Gas cans
2 – 5 Gallon Degreasers For wet well grease control
1 – 4’ T-Handle For turning open/close vault doors
2 – Leaf Blowers Blowing leaves
2 – Weed Wackers For weeds and shrubs removal
6 – Batteries for Dosing Devices Dosing equipment
4 – 50’ Air Compressor Hoses For sewer plugs
1 – Eye Wash Unit Inside control room

Sewer System Management Plan (SSMP)
May 2025

121
Braddock Pump Station (11285 Braddock Drive)

DATE ISSUED ITEM COMMENTS
04-09-2009 Control Panel (Tesco) HMI, On/off power switches 04-09-2009 ATS (Inside) Automatic transfer switch
04-09-2009 3 – U.S. Electric Motors In service – 30HP, 880 RPM 04-09-2009 3 – Crane Deming In service – 500 GPM, 870 RPM 04-09-2009 Sump Pump In service – Drywell
04-09-2009 Kohler Generator Model #150R0Z271
04-09-2009 1 – Godwin By-Pass Trash Pump Hooked up to By-Pass valve 04-09-2009 2 – 10” 8” Hose in Wet Well 1 – 20’ Hooked to Pump to By-Pass valve 04-09-2009 1 – Brand NEW Pump with Stand Spare outside
04-09-2009 2 – Rebuilt Pumps Outside tarped
04-09-2009 8 – 50’ lengths of 6” Soft Hose For portable pump @ Mesmer 04-09-2009 4 – 6” Hard Hose 2 – 20’ ; 1 – 15’ ; 1 – 10’ 04-09-2009 2 – 8” Hard Hose 1 – 15’ ; 1 – 10’ (For Godwin Pump) 04-09-2009 3 – 8” Soft Hose 2 – 10’; 1 – 20’; (For Godwin Pump) 04-09-2009 1 – Box of Packing Rope For manhole covers
04-09-2009 1 – New Drywell Senor Spare, small shed
04-09-2009 1 – 4’ T-Handle For turning valves open/close 04-09-2009 1 – Eye Wash Unit Inside control room

Sewer System Management Plan (SSMP)
May 2025

122

Bristol Pump Station (6399 Bristol Parkway)

DATE ISSUED ITEM COMMENTS
03-19-2009 Control Panel (Tesco) HMI, On/off power switches 03-19-2009 ATS (Outside) Automatic transfer switch
03-19-2009 2 – U.S. Electric Motors 25HP, Top floor
03-19-2009 2 – Fairbanks Pumps 900 GPM, 1170 RPM - Drywell 03-19-2009 1 – Sump Pump Drywell
03-19-2009 1 – Olympian Generator Model – CAT
03-19-2009 1 –T-Handle Valve Tool 4’9”
03-19-2009 1 – Garden Hose Wash down station
03-19-2009 1 – Fire Hose Wash wet well
8 – Poles for Sewer Truck Use for spare sewer truck
8 – Manhole Hooks New spare for sewer truck
12 – Skids and Nozzles Variety for ¾” and 1” hose
1 – Eye Wash Unit Inside control room

Sewer System Management Plan (SSMP)
May 2025

123

Fox Hills Pump Station (5900 Sepulveda Blvd)

DATE ISSUED ITEM COMMENTS
03-19-2009 Control Panel (Tesco) HMI, on/off power switches 03-19-2009 ATS (Outside) Automatic transfer switch
03-19-2009 2 – U.S. Electric Motors 25HP, Top floor
03-19-2009 2 – Fairbanks Pumps Drywell
03-19-2009 1 – Sump Pump Drywell
03-19-2009 1 – AYM-PIA Generator Model - CAT
03-19-2009 1 – NEW Fairbanks Pump
03-19-2009 1 – Rebuilt Fairbanks Pump
03-19-2009 1 – Driveshaft for Rebuilt Pump Original length shaft 03-19-2009 2 – NEW Pumps from Bristol Storing temporarily 03-19-2009 2 – Red T-Handles For valves open & close
03-19-2009 1 – 9’2” T-Handle For valves open & close
03-19-2009 1 – 4’9” Extension For valves open & close
03-19-2009 1 – 21’3” Extension For valves open & close
03-19-2009 4 – Manhole Covers with Rings
03-19-2009 2 – Manhole Covers Lid only
03-19-2009 2 – Drain Covers Lid only
03-19-2009 4 – 12” x 20’ Blue Sewer Pipe Used on Force Main @ Fox Hills 03-19-2009 1 – 10” x 16’ Blue Sewer Pipe Used on Force Main @ Bristol 03-19-2009 1 – Folding Ladder
03-19-2009 1 – Drop Light with Extension Cord
03-19-2009 1 – Pallet of Sand Bags
1 – Eye Wash Unit Inside control room

Sewer System Management Plan (SSMP)
May 2025

124
Hayden Pump Station (8670 Hayden Place)

DATE ISSUED ITEM COMMENTS
04-09-2009 Control Panel (Tesco) HMI, on/off power switches 04-09-2009 2 – U.S. Electric Motors In service
04-09-2009 2 – WEMCO Pumps In service
04-09-2009 1 – Sump Pump Drywell
1 – Eye Wash Unit Inside Dry Well

Sewer System Management Plan (SSMP)
May 2025

125
Jasmine Pump Station (4496 Jasmine Ave)

DATE ISSUED ITEM COMMENTS
03-19-2009 Control Panel HMI, on/off power switches
03-19-2009 ATS (Inside) Automatic transfer switch
03-19-2009 2 – Submersible Pumps In Wet well
03-19-2009 1 – Kohler Generator Model #60R0ZJ71 (inside) 03-19-2009 1 – Reliance Electric Submersible Pump NEW; 10HP, 1140 RPM (shed) 03-19-2009 1 – Used Submersible Pump & Control
Panel
Portable (in shed)
03-19-2009 1 – Tri-pod Light Stand 2 Lights on stand (shed) 03-19-2009 1 – Tri-pod with Motor Shed
03-19-2009 2 – SCBA’s Shed
03-19-2009 2 – Garden Hoses
03-19-2009 1 – 50’ x 6” Soft Hose For portable trash pump 03-19-2009 1 – 10’ x 6” Soft Hose For portable trash pump 2 – 20’ x 6” Hard Hose For sewer truck vacuum
2 – 10’ x 6” Hard Hose For sewer truck vacuum
4 – 10’ x 4” Hard Hose For sewer truck vacuum
44 – 28” Tall cones New
5 – Aluminum Tubes For Vacuum Truck 3203
1 – Eye Wash Unit Inside control room

Sewer System Management Plan (SSMP)
May 2025

126
Mesmer Pump Station converted to Low-Flow Stormwater Diversion Facility (5586 Mesmer Ave)

DATE ISSUED ITEM COMMENTS
04-09-2009 Control Panel (Tesco) HMI, n/ff power switches 04-09-2009 ATS (Inside) Automatic transfer Switch
04-09-2009 3 – U.S. Electric Motors In service – Drywell 04-09-2009 3 – Cornell Pumps In service – Drywell
04-09-2009 1 – 0.5HP Sump Pump Drywell
04-09-2009 1 – Lummins Generator Model – ONAN
04-09-2009 1 – Crane Deming Pump Braddock spare
04-09-2009 1 – U.S. Electric Motor 30HP Braddock spare
04-09-2009 4 – 25HP U.S. Electric Motors New Mesmer
04-09-2009 2 – 30HP U.S. Electric Motors New Braddock
04-09-2009 1 – 50HP U.S. Electric Motor New Triplets
04-09-2009 2 – 0.5HP Sump Pumps NEW 1 – Barnes’ ; 1 – Dayton for Mesmer 04-09-2009 2 – Small Sump Pumps USED For other pump stations (spares) 04-09-2009 1 – ABS Portable Trash Pump 2 – 20’ x 6” Hard Hose; 1 – 50’ x 6” soft hose 04-09-2009 1 – MQ #8706 Small Trash Pump 4” x 2 ½” exit; 1 – 50’ x 2 ½” fire hose 04-09-2009 5 – 10’ x 4” Green Suction Hose 1 – 15’ x 4” Hose with Strainer 04-09-2009 1 – North Star Pressure Washer With extension pole nozzle; normal nozzle 04-09-2009 1 – SALA Tri-pod & Motor Assembly 2 new harnesses 04-09-2009 1 – Milwaukee electric Chain Hoist New
04-09-2009 200’ – ¾”Sewer Hose For 3203 Sewer Trucks
04-09-2009 300’ – 1” Sewer Hose For 3204 Sewer Truck
04-09-2009 18 – Misc. Skids 1” + ¾” 4 – Cleaning nozzles 04-09-2009 1 – Transfer Switch Assembly NEW (Back-up for Stations) 04-09-2009 1 – 5 ½” Gate Valve New (Hayden Place)
04-09-2009 1 – 6” Gate Valve New
04-09-2009 1 – 14” Gate Valve New
04-09-2009 3 – 8” Check Valves New
04-09-2009 2 – 6” Check Valves New
04-09-2009 1 – 12” 3-Flange Pipe 27 ¼” Long
04-09-2009 21 – 5 gallon Wet Well Degreaser
04-09-2009 2 – Blower Motors 1 – New (yellow); 1 – Used (red) 04-09-2009 4 – Flex Tubing Hoses For blower motors
04-09-2009 2 – Orange Manhole Safety Covers
04-09-2009 1 – Waterloo Toolbox Tool for fixing sewer hose 04-09-2009 1 – Box End Connectors ¾” and 1”
04-09-2009 1 – 100’ x ½” Sewer Hose
04-09-2009 2 – 50’ x ¾” Garden Hose
04-09-2009 4 – Misc. Length 1” fire Hoses
04-09-2009 3 – Misc. Length Extension Cords
Kubota Tractor For sewer debris pick-up at Bankfield
8 – Boxes of 5 Gallon Degreaser Wet well
1 – Strom Drain Nozzle
1 – Eye Wash Unit Inside control room

Sewer System Management Plan (SSMP)
May 2025

127
Sewer Truck #2079

DATE ISSUED ITEM COMMENTS
04-30-2025 1 – Square Point Shovel
1 – Rake
1 – Scoop Shovel (short handle)
1 – Push Broom
1 – 50’ x 1 ½” Fire Hose
1 – 15’ x 1 ½” Fire Hose
1 – Hydrant Key
3 – Manhole Hooks
1 – Probe
3 – Pipe Wrenches
Large Assortment of Hand Tools, Wrenches,
Screw Drivers, Pliers, Hammers, etc.

Trash Bags and Gloves
Manhole Packing Rope
1 – Respirator and Spare Cartridges
1 – Pair Rubber Boots
1 – Pair knee High Rubber Boots
Drop Lights and Extension Cords
1 – Pair Loppers
1 – Pair Hedge Cutters
12 – 28” Cones and 1 - Barricade
1 – Small Portable Generator For blower in confine spaces 1 – Fuel Tank 100 Gallon Diesel fuel for generators
2 – 5 Gallon Degreasers Back of the truck
5 – Sand Bags
10 – Absorbent Bags
1 – 3HP Sump Pump 2” hose for 50’ hose flat
1 – 8-foot Ladder Folding Ladder
Assortment of Power Tools
Assortment of Electrical Equipment
1 – Locator Device For camera jobs (pinpoint location)
2 - Respirators

Sewer System Management Plan (SSMP)
May 2025

128
Sewer Truck #3203

DATE ISSUED ITEM COMMENTS
03-19-2009 2 - Chisel Nozzle
Warthog Spinner Nozzle
Cleaning Nozzle
Small chisel Nozzle
Bomb Nozzle
Small Cleaning Nozzle
Eddie Valve
2 – Hydrant Wrenches
2 - Tigertails
950’ – ¾” Hose 900’ had to cut hose
Pick
Shovel Square and point
Tool Box Hand Tools
Scoop
Chopper
Extension Poles
2 – Hook (manhole) More exaggerated hook
Sledge Hammer For breaking sealed manholes
Manhole Puller Hook Opens manholes (small)
Manhole Puller (Leverage Bar) Opens manholes (large)
16 – Cones
50 Pieces Craftsman Tool Set
2 – Pipe Wrenches Medium
2 – Crescent Wrenches Large and Medium
2 – 25’ x 2 ½” Fire Hose
Oil Absorbent
1 – Single Jack Hammer
2 - Respirators

Sewer System Management Plan (SSMP)
May 2025

129
Sewer Truck #3204

DATE ISSUED ITEM COMMENTS
03-19-2009 1 - Manhole Hook
1 – Push Broom
1 – Shovel
1 – Eddie Valve with Key
4 – Skids
2 – Breaker Nozzles
2 – Sand Nozzles
1 – Pick
1 – Tool Box
1- Warthog Nozzle
2 – Sledge Hammers
2 – Crescent Wrenches
30 - Cones
2 - Respirators

Sewer System Management Plan (SSMP)
May 2025

130
Sewer Truck #3205

DATE ISSUED ITEM COMMENTS
04-30-2025 1 – First Aid Kit
4 – Manhole Hooks
2 - Tigertails
1 – Push Broom
1 – Scoop
3 – ¾” Skids
2 – 2” Breaker Nozzles
2 – 4” Breaker Nozzles
2 – 4” Skid with Sand Nozzles
1 – 4” Skid with Spinning Nozzle
1 – Spinning Nozzle
2 – Sand Nozzles
1 – Eddie Valve with Key
1 – Chopper with Extensions
1 – Hook with Extensions
1 – Toolbox
2 – Pipe Wrenches
1 – Warthog
1 – Sledge Hammer
1 – Single Jack (Hammer)
1 – Pick
30 - Cones
2 - Respirators

Sewer System Management Plan (SSMP)
May 2025

131
Sewer Truck #20120

DATE ISSUED ITEM COMMENTS
03-19-2009 1 – Push Camera / Lateral Only TV
Assortment of Power Tools
Assortment of Hand Tools
Tools, hooks, screw drivers, wrench, gloves,
cleaning equipment, pipe wrenches, boots

1 – Detector with bullet for locating sewer
lines

1 – Gas Meter 6x – 3R
1 – Electric Air Blower (Allegre) With 15’ hose
30 – Cones
10 – Delineator Poles
6 – Sewer Poles and Attachments
2 - Respirators
Tyvek Suits
Marking Paints
Sewer Dye
4 – Handheld Flashlights
6 – Bags of Absorbent
3 – 1 Gallon Jugs of Simple Green
2 – 1 Gallon Jugs of Bleach
2 – Small Portable Pumps
Air Compressor
Rubber Boots

Sewer System Management Plan (SSMP)
May 2025

132

Sewer System Management Plan (SSMP)
May 2025

133

APPENDIX C

MAP OF CULVER CITY YARD & PUMP STATIONS

and

SEWER SERVICE AREA BOUNDARY

Sewer System Management Plan (SSMP)
May 2025

134

Sewer System Management Plan (SSMP)
May 2025

135

Sewer System Management Plan (SSMP)
May 2025

136

APPENDIX D

MAP OF SSO OCCURRENCES

FROM

AUGUST 2019 TO May 2025

Sewer System Management Plan (SSMP)
May 2025

137

Sewer System Management Plan (SSMP)
May 2025

138

0 500
1000
1500
2000
2500
0 1
2 3
4 5
6 2019 2020 2021 2022 2023 2024 2025
Overall Performance
Total Spills Total Volume
0 1
2 3
4 5
6 2019 2020 2021 2022 2023 2024 2025
Number of Spills per Category per Year
Category 1 Category 3 Category 4

Sewer System Management Plan (SSMP)
May 2025

139

APPENDIX E

SEWER SPILL FIELD REPORT FORM

Sewer System Management Plan (SSMP)
May 2025

140

CITY OF CULVER CITY

INITIAL SPILL/OVERFLOW REPORT FORM

2. Location of the Spill: _________________________________________________________

3. Date and Time Notify to EPO Staff: _________________________________

4. Total Spill Volume (Estimate): ________________gallons

5. Date of Spill: ________________ 5. Time Spill Received: ________________ am/pm

6. Crew(s) Arrival Time: ________________ am/pm 7. Time Spill Ended: ________________am/pm

8. Spill Discharge/Reach to a Storm Drain: Yes / No

9. Spill Volume Entering a Storm Drain (Estimate): ________________ gallons

10. Comment: ____________________________________________________________________________ ____________________________________________________________________________ ____________________________________________________________________________ ____________________________________________________________________________ ____________________________________________________________________________

11. Submitted By: ____________________ Date: ____________________

Sewer System Management Plan (SSMP)
May 2025

141

APPENDIX F

METHODS FOR ESTIMATING SPILL VOLUME

Sewer System Management Plan (SSMP)
May 2025

142
Methods for Estimating Spill Volume
A variety of approaches exist for the estimation of the volume of a sanitary sewer overflow. This appendix documents the three methods that are most often employed. The person preparing the estimate should use the method most appropriate to the sewer overflow in question using the best information available. Every effort should be made to make the best possible estimate of SSO volume.

Method 1: Eyeball Estimate
The volume of small spills can be estimated using an “eyeball estimate”. To use this method, imagine the amount of water that would spill from a bucket or a barrel. A bucket contains 5 gallons and a barrel contains 50 gallons. If the spill is larger than 50 gallons, try to break the standing water into barrels and then multiply by 50 gallons. This method is useful for contained spills up to 200 gallons.

Method 2: Measured Volume
The volume of most small spills that have been contained can be estimated using this method. The shape, dimensions, and the depth of the spilled wastewater are needed. The shape and dimensions are used to calculate the area of the spills and the depth is used to calculate the volume.

Step 1 – Sketch the shape of the contained sewage

Step 2 – Measure or pace off the dimensions
Step 3 – Measure the depth at several locations and select an average Step 4 – Convert the dimensions, including depth to feet Step 5 – Calculate the area in square feet using the following formulas:

Rectangle: Area = length (feet) x width (feet)
Circle: Area = 0.785 x D2 (where D is diameter of the spill) Triangle: Area = base (feet) x height (feet) x 0.5
Step 6 – Multiply the area (square feet) times the depth (in feet) to obtain the volume in cubic feet Step 7 – Multiply the volume in cubic feet by 7.48 to convert it to gallons

Method 3: Duration and Flow Rate
Calculating the volume of spills where it is difficult or impossible to measure the area and depth requires a different approach. In this method a separate estimate is made of the duration of the spill and the flow rate.

The methods of estimating duration and flow rate are:

Duration: The duration is the elapsed time from the time the spill started to the time that the spill ended.

Start time: The start time is sometimes difficult to establish. Here are some approaches:

• Local residents can be used to establish start time. Inquire as to their observations. Spills that occur in rights-of-way are usually observed and reported promptly. Spills that occur out of the public view can go on longer. Sometimes observations like odors or sounds (e.g. water running in a normally dry creek bed) can be used to estimate the start time.

• Changes in flow on a downstream flowmeter can be used to establish the start time. Typically the daily flow peaks are “cut off” or flattened by the loss of flow. This can be identified by comparing hourly flow data, when available.

Sewer System Management Plan (SSMP)
May 2025

143

• Conditions at the spill site change with time. Initially there will be limited deposits of grease, toilet paper, and other sewage solids. After a few days to a week, the sewage solids forms a light-colored residue. After a few weeks to a month it turns dark. In both cases the quantity of toilet paper and other materials of sewage origin increase in amount. These changes with time can be used to estimate the start time in the absence of other information. Taking photographs to document the observations can be helpful if questions arise later in the process.

End time: The end time is usually much easier to establish. Field crews on-site observe the “blow down” that occurs when the blockage has been removed. The “blow down” can also be observed in downstream flowmeters.

Flow Rate: The flow rate is the average flow that left the sewer system during the time of the spill. There are three ways to estimate the flow rate:

• The San Diego Manhole Flowrate Chart: This chart shows the sewage flowing from a standard manhole cover for a variety of flowrates. The observations of the field crew can be used to select the approximate flowrate from the chart. If possible, photographs are useful in documenting basis for the flowrate estimate.

• Flowmeter: Changes in flows in the downstream flowmeters can be used to estimate the flowrate during the spill.

• Counting Connections: Once the location of the spill is known, the number of upstream connections can be determined form the sewer maps. Multiply the number of connection by 200 to 250 gallons per day per connection or 8-10 gallons per hour per connection.

For example: 15 upstream connections x 9 gallons per hour per connection = 135 gallons per hour / 60 minutes per hour
= 2.25 gallons per minute

Spill Volume: Once duration and flow rate have been estimated, the volume of the spill is the product of the duration in hours or days times the flow rate in gallons per hour or gallons per day.

For example: Spill duration = 3 hours

2.25 gallons per minute x 3 hours x 60 minutes per hour = 405 gallons

Sewer System Management Plan (SSMP)
May 2025

144

Sewer System Management Plan (SSMP)
May 2025

145

APPENDIX G

CULVER CITY MUNICIPAL CODE

TITLE 5
CHAPTER 5.02

SEWERS

Sewer System Management Plan (SSMP)
May 2025

146

Sewer System Management Plan (SSMP)
May 2025

147

Sewer System Management Plan (SSMP)
May 2025

148

Sewer System Management Plan (SSMP)
May 2025

149

Sewer System Management Plan (SSMP)
May 2025

150

Sewer System Management Plan (SSMP)
May 2025

151

Sewer System Management Plan (SSMP)
May 2025

152

Sewer System Management Plan (SSMP)
May 2025

153

Sewer System Management Plan (SSMP)
May 2025

154

Sewer System Management Plan (SSMP)
May 2025

155

Sewer System Management Plan (SSMP)
May 2025

156

Sewer System Management Plan (SSMP)
May 2025

157

Sewer System Management Plan (SSMP)
May 2025

158

APPENDIX H

LOS ANGELES COUNTY CODE

TITLE 20
DIVISION 2

Sewer System Management Plan (SSMP)
May 2025

159

Sewer System Management Plan (SSMP)
May 2025

160

Sewer System Management Plan (SSMP)
May 2025

161

Sewer System Management Plan (SSMP)
May 2025

162

Sewer System Management Plan (SSMP)
May 2025

163

Sewer System Management Plan (SSMP)
May 2025

164

Sewer System Management Plan (SSMP)
May 2025

165

Sewer System Management Plan (SSMP)
May 2025

166

Sewer System Management Plan (SSMP)
May 2025

167

Sewer System Management Plan (SSMP)
May 2025

168

Sewer System Management Plan (SSMP)
May 2025

169

Sewer System Management Plan (SSMP)
May 2025

170

Sewer System Management Plan (SSMP)
May 2025

171

Sewer System Management Plan (SSMP)
May 2025

172

Sewer System Management Plan (SSMP)
May 2025

173

Sewer System Management Plan (SSMP)
May 2025

174

Sewer System Management Plan (SSMP)
May 2025

175

Sewer System Management Plan (SSMP)
May 2025

176

Sewer System Management Plan (SSMP)
May 2025

177

Sewer System Management Plan (SSMP)
May 2025

178

Sewer System Management Plan (SSMP)
May 2025

179

Sewer System Management Plan (SSMP)
May 2025

180

Sewer System Management Plan (SSMP)
May 2025

181

Sewer System Management Plan (SSMP)
May 2025

182

Sewer System Management Plan (SSMP)
May 2025

183

Sewer System Management Plan (SSMP)
May 2025

184

Sewer System Management Plan (SSMP)
May 2025

185

Sewer System Management Plan (SSMP)
May 2025

186

Sewer System Management Plan (SSMP)
May 2025

187

Sewer System Management Plan (SSMP)
May 2025

188

Sewer System Management Plan (SSMP)
May 2025

189

Sewer System Management Plan (SSMP)
May 2025

190

Sewer System Management Plan (SSMP)
May 2025

191

Sewer System Management Plan (SSMP)
May 2025

192

Sewer System Management Plan (SSMP)
May 2025

193

Sewer System Management Plan (SSMP)
May 2025

194

Sewer System Management Plan (SSMP)
May 2025

195

Sewer System Management Plan (SSMP)
May 2025

196

Sewer System Management Plan (SSMP)
May 2025

197

Sewer System Management Plan (SSMP)
May 2025

198