2025 Sewer System Management Plan Update — Manhattan Beach City Council, July 15, 2025 (part 1 of 2)

CITY OF MANHATTAN BEACH

UTILITIES DIVISION

Sewer System Management Plan
Update

March 18, 2022

Prepared under the supervision of
Tyrone Peter, P.E.

Prepared by Willdan Engineering
2401 East Katella Avenue, Suite 300,
Anaheim, CA 92806
Phone 714-978-8200 Fax 714-940-4920

City of Manhattan Beach SSMP
2 Table of Contents
DEFINITIONS, ACRONYMS, AND ABBREVIATIONS…………………………………………………………………………………………………………………5 INTRODUCTION ..................................................................................................................................................................... 10 BACKGROUND ...................................................................................................................................................................... 10 I. ORGANIZATION OF SSMP .................................................................................................................................................... 122 CHAPTER 1 GOALS ................................................................................................................................................................. 13

1.1 REGULATORY REQUIREMENTS ............................................................................................................................................. 13

1.2 SEWER SYSTEM MANAGEMENT PLAN UPDATE SCHEDULE ........................................................................................................ 14

1.3 CITY SERVICE AREA AND SEWER SYSTEM ASSET OVERVIEW………………………………………………………………………………………………….... 14

1.4 SSMP GOALS……………………………………………………………………………………………………………………………………………………………… 14

1.5 MONITORING AND REPORTING PLAN REQUIREMENTS ............................................................................................................. 15

1.6 REFERENCES .................................................................................................................................................................... 15 CHAPTER 2 ORGANIZATION .................................................................................................................................................. 16

2.1 REGULATORY REQUIREMENTS ............................................................................................................................................. 16

2.2 LEGALLY RESPONSIBLE OFFICIAL .......................................................................................................................................... 16

2.3 MANAGEMENT AND ORGANIZATIONAL STRUCTURE ................................................................................................................. 16

2.4 SPILL REPORTING CHAIN OF COMMUNICATION ....................................................................................................................... 19

2.5 MONITORING AND REPORTING PLAN REQUIREMENTS ............................................................................................................. 19

2.6 REFERENCES .................................................................................................................................................................... 19 CHAPTER 3 LEGAL AUTHORITY .............................................................................................................................................. 23

3.1 REGULATORY REQUIREMENTS ............................................................................................................................................. 23

3.2 ILLICIT DISCHARGE PREVENTION .......................................................................................................................................... 23

3.3 COLLABORATION WITH STORM SEWER AGENCIES FOR EMERGENCY SPILL RESPONSES………………………………………………………………… 23

3.4 DESIGN, CONSTRUCTION, AND INSTALLATION REQUIREMENTS .................................................................................................. 23

3.5 LATERAL MAINTENANCE ACCESS ......................................................................................................................................... 24

3.6 FATS, OILS AND GREASE DISCHARGE LIMITATIONS .................................................................................................................. 24

3.7 MONITORING AND REPORTING PLAN REQUIREMENTS ............................................................................................................. 24

3.8 ENFORCEMENT PROVISIONS ............................................................................................................................................... 25

3.9 EASEMENT ACCESSIBILITY AGREEMENTS…………………………………………………………………………………………………………………………. 25

3.10 REFERENCES .................................................................................................................................................................... 26 CHAPTER 4 OPERATION AND MAINTENANCE PROGRAM ...................................................................................................... 28

4.1 REGULATORY REQUIREMENTS ............................................................................................................................................. 28

4.2 COLLECTION SYSTEM MAPPING ........................................................................................................................................... 28

4.3 ROUTINE AND PREVENTIVE MAINTENANCE PROGRAM ............................................................................................................. 29

4.4 REHABILITATION AND REPLACEMENT PLAN ............................................................................................................................ 30

4.5 STAFF AND CONTRACTOR TRAINING ..................................................................................................................................... 31

4.6 EQUIPMENT AND REPLACEMENT PART INVENTORY .................................................................................................................. 32

4.7 MONITORING AND REPORTING PLAN REQUIREMENTS ............................................................................................................. 32

4.8 REFERENCES .................................................................................................................................................................... 33 CHAPTER 5 DESIGN AND PERFORMANCE PROVISIONS.......................................................................................................... 34

5.1 REGULATORY REQUIREMENTS ............................................................................................................................................. 34

5.2 DESIGN AND CONSTRUCTION STANDARDS AND SPECIFICATIONS ................................................................................................. 34

5.3 PROCEDURES AND STANDARDS FOR INSTALLATION, REHAB, AND REPAIR PROJECTS ....................................................................... 34

5.4 MONITORING AND REPORTING PLAN REQUIREMENT ............................................................................................................... 35 CHAPTER 6 SPILL EMERGENCY RESPONSE PROGRAM (SERP) ................................................................................................ 36 City of Manhattan Beach SSMP
3 6.1 REGULATORY REQUIREMENTS ............................................................................................................................................. 36

6.2 NOTIFICATION PROCEDURES FOR SPILLS ................................................................................................................................ 36

6.3 SPILL EMERGENCY RESPONSE PLAN ...................................................................................................................................... 38

6.4 NOTIFICATION TO REGULATORY AGENCIES ............................................................................................................................. 39

6.5 PROCEDURE TO ENSURE THAT STAFF AND CONTRACTORS ARE AWARE OF AND ARE APPROPRIATELY TRAINED TO FOLLOW THE EMERGENCY RESPONSE PLAN…………………………………………………………………………………………………………………………………………………………. 39

6.6 PROCEDURE TO ADDRESS EMERGENCY OPERATIONS SUCH AS TRAFFIC AND CROWD CONTROL AND OTHER NECESSARY RESPONSE ACTIVITIES………………………………………………………………………………………………………………………………………………………………… 39

6.7 PROGRAM TO ELIMINATE OR MINIMIZE THE DISCHARGE OF SPILLS INTO WATERS OF THE UNITED STATES…………………………………………. 40 CHAPTER 7 SEWER PIPE BLOCKAGE CONTROL PROGRAM ..................................................................................................... 41

7.1 REGULATORY REQUIREMENTS ............................................................................................................................................. 41

7.2 IMPLEMENTATION PLAN AND SCHEDULE FOR PUBLIC OUTREACH ............................................................................................... 41

7.3 PLAN AND SCHEDULE FOR DISPOSAL OF FOG GENERATED WITHIN THE SYSTEM SERVICE AREA ......................................................... 42

7.4 LEGAL AUTHORITY TO PROHIBIT DISCHARGES TO THE SYSTEM AND IDENTUFY MEASURES TO PREVENT SPILLS AND BLOCKAGES CAUSED BY FOG .............................................................................................................................................................................. 42

7.5 REQUIREMENTS TO INSTALL GREASE REMOVAL DEVICES, DESIGN STANDARDS, MAINTENANCE BMP’S, RECORD KEEPING AND REPORTING…………………………………………………………………………………………………………………………………………………………….... 42

7.6 AUTHORITY FOR INSPECTION OF GREASE PRODUCING FACILITIES , TO ENFORCEMENT, AND EVIDENCE OF ADEQUATE STAFFING TO INSPECT AND ENFORCE THE FOG ORDINANCE ................................................................................................................................... 42

7.7 IDENTIFICATION AND SCHEDULING FOR MAINTENANCE OF SEWER SECTIONS PRONE TO FOG BLOCKAGES ......................................... 43

7.8 DEVELOPMENT AND IMPLEMENTATION OF SOURCE CONTROL MEASURES FOR SEWER SECTIONS PRONE TO FOG BLOCKAGES ............... 43

7.9 MONITORING AND REPORTING PLAN REQUIREMENTS ........................................................................................................... 443

7.10 REFERENCES .................................................................................................................................................................. 443 CHAPTER 8 SYSTEM EVALUATION AND CAPACITY ASSURANCE AND CAPITAL IMPROVEMENTS ........................................... 44

8.1 REGULATORY REQUIREMENTS ............................................................................................................................................. 44

8.2 SYSTEM EVALUATION AND CONDITION ASSESSMENT ............................................................................................................... 45

8.3 Capacity Assessment and DESIGN CRITERIA ................................................................................................................ 46

8.4 PRIORITIZATION OF CORRECTIVE ACTION…………………………………………………………………………………………………………………………. 47

8.5 CAPITAL IMPROVEMENT PLAN ............................................................................................................................................. 47

8.6 COMPLETION SCHEDULE .................................................................................................................................................... 48

8.7 REFERENCES .................................................................................................................................................................... 50 CHAPTER 9 MONITORING, MEASUREMENT AND PROGRAM MODIFICATIONS .................................................................... 511

9.1 REGULATORY REQUIREMENTS ........................................................................................................................................... 511

9.2 INFORMATION MAINTENANCE .......................................................................................................................................... 511

9.3 SSMP IMPLEMENTATION AND EFFECTIVENESS MONITORING .................................................................................................... 52

9.4 ASSESSMENT OF PREVENTATIVE OPERATION AND MAINTENANCE PROGRAM ............................................................................... 53

9.5 PROGRAM MODIFICATIONS/UPDATES .................................................................................................................................. 53

9.6 IDENTIFICATION AND ILLUSTRATION OF SPILL TRENDS .............................................................................................................. 54

9.7 MONITORING AND REPORTING PLAN REQUIREMENTS ............................................................................................................. 54 CHAPTER 10 SSMP PROGRAM AUDITS .................................................................................................................................. 55

10.1 REGULATORY REQUIREMENTS ............................................................................................................................................. 55

10.2 SSMP PROGRAM AUDITS .................................................................................................................................................. 55

10.3 MONITORING AND RECORDING ........................................................................................................................................... 56

10.4 SELF-MONITORING AND PLAN MODIFICATION ....................................................................................................................... 56 CHAPTER 11 COMMUNICATION PROGRAM .......................................................................................................................... 58

11.1 REGULATORY REQUIREMENTS ............................................................................................................................................. 58

11.2 PUBLIC COMMUNICATION .................................................................................................................................................. 58

11.3 MONITORING AND REPORTING PLAN REQUIREMENTS ............................................................................................................. 59 City of Manhattan Beach SSMP
4 APPENDICES .......................................................................................................................................................................... 60 APPENDIX A – STATE WATER RESOURCES CONTROL BOARD ORDER NO. 2022-0103-DWQ STATEWIDE GENERAL WDR FOR SANITARY SEWER SYSTEMS ...................................................................................................................................................................................... 61 APPENDIX B – VACANT ................................................................................................................................................................... 75 APPENDIX C - VACANT .................................................................................................................................................................... 91 APPENDIX D – SSMP CHANGE LOG .................................................................................................................................................. 95 APPENDIX E – SELF-AUDIT .............................................................................................................................................................. 99 APPENDIX F – FOG FACILITIES ....................................................................................................................................................... 106 APPENDIX G – STANDARD OPERATING PROCEDURES .......................................................................................................................... 111 APPENDIX H – EXISTING PUMP INVENTORY ...................................................................................................................................... 128 APPENDIX I – HOT SPOT CLEANING ................................................................................................................................................. 130 APPENDIX 1 – CODE OF ORDINANCE, TITLE 5 – SANITATION AND HEALTH, CHAPTER 5.36 – SEWERS, SEWAGE DISPOSAL – CITY SEWAGE SYSTEM ................................................................................................................................................................................................ 136 APPENDIX 2 – CODE OF ORDINANCE, TITLE 5 – SANITATION AND HEALTH, CHAPTER 5.38 – FATS, OILS AND GREASE MANAGEMENT AND DISCHARGE CONTROL ................................................................................................................................................................... 138 APPENDIX 3 – EQUIPMENT AND REPLACEMENT PARTS INVENTORY........................................................................................................ 149 APPENDIX 4 – WASTEWATER MASTER PLAN – SECTION 4, CRITERIA ..................................................................................................... 150 APPENDIX 5 – WASTEWATER MASTER PLAN – SECTION 6, EXISTING PUMP STATIONS .............................................................................. 164 APPENDIX 6 – WASTEWATER MASTER PLAN – SECTION 7, HYDRAULIC MODEL & COLLECTION SYSTEM CAPACITY ANALYSIS ........................... 193 APPENDIX 7 – WASTEWATER MASTER PLAN – SECTION 8, CONDITION ASSESSMENT ............................................................................... 200 APPENDIX 8 – WASTEWATER MASTER PLAN – SECTION 9, OPERATION AND MAINTENANCE ...................................................................... 224 APPENDIX 9 – WASTEWATER MASTER PLAN – SECTION 10, CAPITAL IMPROVEMENT ............................................................................... 260 APPENDIX 10 – RESOLUTION NO. 24-0066 ..................................................................................................................................... 274 APPENDIX 11 – FY 2026 -2030 CAPITAL IMPROVEMENT PLAN ........................................................................................................... 278 APPENDIX 12 – SPILL REPORT FORM ............................................................................................................................................... 308 APPENDIX 13 – SPILL MAP & REPORTS ........................................................................................................................................... 315 APPENDIX 14 – NOTICE OF INSPECTION – CITY OF MANHATTAN BEACH COLLECTION SYSTEM .................................................................... 345 APPENDIX 15 - NOTICE OF VIOLATION – CITY OF MANHATTAN BEACH COLLECTION SYSTEM ...................................................................... 380 APPENDIX 16 – NOTICE OF VIOLATION RESPONSE ............................................................................................................................. 385

LIST OF FIGURES
Figure 1 – Organization Chart of Sewer Staff Figure 2 – Spill Reporting Flow Chart

LIST OF TABLES
Table 1 – Sewer Staff Contact Information
Table 2 – Contact Numbers for Spill Chain of Communication Table 3 – Legal Authority Checklist
City of Manhattan Beach SSMP

5 Definitions, Acronyms, and Abbreviations

Best Management Practices (BMP) – Refers to the procedures employed in commercial kitchens to minimize the quantity of grease that is discharged to the sanitary sewer system.

Blockage or Stoppage – A build-up of debris in the sewer line or lateral, which stops the flow of wastewater and allows the water to back up behind the stoppage, sometimes causing a spill.

California Integrated Water Quality System (CIWQS) – Refers to the State Water Resources Control Board online electronic reporting system that is used to report SSOs, certifies completion of the SSMP, and provides information on the sanitary sewer system.

California Office of Emergency Services (OES) – Responsible for the coordination of overall state agency response to disasters. Assuring the state’s readiness to respond to, recover from all hazards and assisting local government in their emergency preparedness, response, recovery, and mitigation.
https://www.caloes.ca.gov/cal-oes-divisions

Capital Improvement Program (CIP) – Refers to the document that identifies planned capital improvements to the district’s wastewater collection system.

Closed-Circuit Television (CCTV) – The process and equipment that is used to internally inspect the condition of gravity sewers.

California Water and Environmental Association (CWEA) - CWEA the State Water board committed to re -designing the CIWQS3 Online database to allow “event” based SSO reporting versus the original “location “based reporting. http://www.cwea.org/

Enrollee – A public entity that owns or operates a sanitary sewer system and has submitted a complete and approved application for coverage under the SSS WDR.

Fats, Oils, and Grease (FOG) – Refers to fats, oils, and grease typically associated with food preparation and cooking activities that can cause blockages in the sanitary sewer system.

Food Service Establishment (FSE) – Refers to commercial or industrial facilities where food is handled/prepared/served that discharge to the wastewater collection system.

Geographical Information System (GIS) – A computerized database linked with mapping, which includes various layers of information used for asset management purposes . Examples of information found on a GIS can include a sewer map and sewer features such as pipe location, diameter, material, condition, and last date cleaned or repaired. The GIS also typically contains base information such as streets and parcels.

City of Manhattan Beach SSMP

6 General Waste Discharge Requirements (GWDR) – Similar to a NPDES permit but with significant differences. A WDR is an authorization to discharge waste with certain conditions, which can be issued on an individual basis or to a group of dischargers. WDR's do not sunset, unlike NPDES permits, and are most issued by the Regional Water Boards.

The Statewide General WDR for Sanitary Sewer Systems was adopted by the SWCRB and will be implemented by the Regional Water Boards and SWRCB.

Infiltration/Inflow (I/I) – Infiltration is generally considered to be extraneous water that enters the sewer system over longer periods of time, such as groundwater seepage through cracks in the sewer. Inflow is generally considered to be extraneous water that enters the system as a direct result of a rain event, such as through defects in the sewer.

While it is impossible to control all I/I, it is certainly desirable to reduce I/I when cost - effective.

Legally Responsible Official (LRO) – The authority to ensure the enrolled sanitary sewer system(s) complies with this Order, and is authorized to serve as a duly authorized representative.

Los Angeles County Department of Health (LACDH)
Los Angeles County Sanitation District (LACSD)
Lateral (House Connection Sewer) - The portion of sewer that connects a structure (residence or business) with the main sewer line in the street, alley or easement.

Lower Lateral – That portion of a lateral usually from the property line or easement line to the sewer main. Enrollees may or may not be responsible for maintenance of this portion of the lateral. If not, the lower lateral is owned and maintained by the property its serves.

Manhole – Refers to an engineered structure that is intended to provide access to a sanitary sewer for maintenance and inspection.

Monitoring and Reporting Program (MRP) – Refers to the State Water Resources Control Board Monitoring and Reporting Program 2022-0103-DWQ including all future revisions

National Association of Sewer Service Company (NASSCO) – Sets industry standards for the assessment, maintenance, and rehabilitation of underground infrastructure, and to assure the continued acceptance and growth of trenchless technologies. Provides viable solutions through education, technical resources, and advocacy

National Pollution Discharge Elimination System (NPDES) – An NPDES permit is typically a license for a facility to discharge a specified amount of a pollutant into a receiving water under certain conditions. Permits may also authorize facilities to process, incinerate, landfill, or beneficially use sewage sludge.

NGO – Non-governmental organization.

City of Manhattan Beach SSMP

7 Online SSO Reporting System – Refers to the California Integrated Water Quality System (CIWQS).

Operations and Maintenance (O&M ) – WDR requirements for Sanitary Sewer Management Plan to maintain maximum flow to the wastewater treatment plant and to maximize either in-line storage capacity or detention upstream of the system inlets. There are several key components of an O&M program that a municipality/authority must provide to ensure proper O&M and to meet the minimum control requirement

Overflow Emergency Response Plan (OERP) – The purpose of the OERP is to supports an orderly and effective response to sanitary sewer overflows (SSOs) . It provides guideline for City personnel to follow in responding to, cleaning up, and reporting SSOs that may occur within the City’s service area.

Percent Reached Surface Water – Volume of sewage discharged from a sanitary sewer system or private lateral or collection system estimated to have reached surface water divided by the total volume of sewage discharged.

Percent Recovered – Volume of sewage discharged that was disposed of properly, divided by the total volume of sewage discharged.

Private Lateral – Privately owned sewer service lateral.

Private Lateral Sewage Discharge (PLSD) – Sewage discharges caused by blockages or other problems within privately owned laterals, collection systems or other private sewer assets that are tributary to the reporting Enrollee’s sanitary sewer system. Reports of these events may be submitted by Enrollees on a voluntary basis but are not the Enrollee’s responsibility unless caused by issues in the main line or because of other Enrollee activity. Normally, this type of sewage discharge is the responsibility of the private lateral, private asset, or collection system owner.

Pipeline Assessment and Certification Program (PACP)
Regional Water Quality Control Board (RWQCB)
Sanitary Sewer Overflow (SSO) – Any overflow, spill, release, discharge or diversion of untreated or partially treated wastewater from a sanitary sewer system. SSO may also be referred to as a “spill” in this document and the 2022 Order. SSOs include:
(i) Overflows or releases of untreated or partially treated wastewater that reach waters of the United States.
(ii) Overflows or releases of untreated or partially treated wastewater that do not reach waters of the United States; and
(iii) Wastewater backups into buildings and on private property that are caused by blockages or flow conditions within the publicly owned portion of a sanitary sewer system.

Sanitary Sewer System – Any system of pipes, pump stations, sewer lines, or other City of Manhattan Beach SSMP

8 conveyances, upstream of a WWTP head works and which is comprised of more than one mile of pipes and sewer lines, used to collect, and convey wastewater to a publicly owned treatment facility.

Sanitary Sewer System Waste Discharge Requirements (SSS WDRs) – An Order to develop a regulatory mechanism to provide a consistent statewide approach for reducing sanitary sewer overflows

Sanitary Sewer Spill Categories –
Spill Category 1 – All discharges of sewage resulting from a failure in an Enrollee’s sanitary sewer system that resulted in a discharge to a drainage channel and/or surface water.

Spill Category 2 – All discharges of sewage resulting from a failure in an Enrollee’s sanitary sewer system of a volume equal to or greater than 1,000 gallons that did not reach surface water.

Spill Category 3 – All discharges of sewage resulting from a failure in an Enrollee’s sanitary sewer system of a volume equal to or greater than 50 gallons and less than 1,000 gallons that did not reach surface water.

Spill Category 4 - All discharges of sewage resulting from a failure in an Enrollee’s sanitary sewer system of a volume less than 50 gallons that did not reach surface water.

Spill Database – Online reporting system developed, hosted, and maintained by the SWRCB for compliance with the Monitoring and Reporting Program contained in SSS WDR.

System Evaluation and Capacity Analysis Plan (SECAP) Sewer System – See Wastewater Collection System

Sewer System Management Plan (SSMP) is a document that describes the activities an agency uses to manage their wastewater collection system effectively.

State Water Resources Control Board (SWRCB) – State Water Resources Control Board and staff responsible for protecting the State’s water resources.

Supervisory Control and Data Acquisition (SCADA) – Refers to an electronic system that is used to monitor lift station performance and to initiate alarms when monitored parameters exceed pre-set limits.

Upper Lateral – Portion of a lateral usually from the building foundation to the property line or easement line where it connects to the Lower Lateral. Enrollees may not own and maintain this portion of a Lateral since responsibility usually lies with the owner of the property that the lateral serves.

City of Manhattan Beach SSMP

9 Waste Discharge Requirements (WDR/ GWDR) – Refers to the State Water Resources Control Board Order No. 2006-0003, Statewide General Waste Discharge Requirements for Sanitary Sewer Systems, dated May 2, 2006, and Order No. WQ2013 -0058-EXEC including all future revisions.

Wastewater Collection System – All pipelines, pump stations, and other facilities upstream of the headworks of the wastewater treatment plan t, which convey wastewater from its sources to the wastewater treatment plant.

Waters of the United States (Please refer to the link below to access Federal register published on January 18, 2023 for the updated and detailed definition of this item) https://www.federalregister.gov/documents/2023/01/18/2022-28595/revised-definition-of- waters-of-the-united-states

WDID – Waste Discharge Identification number assigned as a unique identifier by the SWRCB to each Enrollee for regulatory recordkeeping and data management purposes.

City of Manhattan Beach SSMP

10 Introduction

Willdan Engineering has been retained by the City of Manhattan Beach Utilities Division to update the City’s Sewer System Management Plan (SSMP) to be presented to the State Water Resources Control Board (SWRCB). The report is organized in accordance with the SWRCB requirements, provides discussions of the requirements and makes recommendations to implement measures to meet the requirements.

Background

On May 2, 2006, the State Water Resources Control Board (SWRCB) adopted a Statewide General Waste Discharge Requirements and Monitoring and Reporting Program (GWDR) by issuing Order No. 2006 -003. See Appendix A for reference. The regulations in the Order were developed out of growing concern about the water quality impacts of Sanitary Sewer Overflows (spills), particularly those that cause beach closures, adverse effects to other bodies of water, or pose serious health and safety nuisance problems.

On July 30, 2013, Attachment A to the Order was promulgated and became effective on September 9, 2013, and is known as Attachment A, SWRCB Order No. WQO 2013-0058- EXEC, amending the Monitoring and Reporting Program for Statewide General Waste Discharge Requirements for Sanitary Sewer Systems (together these documents constitute the “SSS WDR”). The amendment added a spill Category 3 and revised the Category 1 and 2 updating the reporting requirement.

The contents of this document reflect the requirements of Order No. 2022 -0103-DWQ (2022 Order), which was adopted by the SWRCB on December 6, 2022 and became effective on June 5, 2023. Prior to the 2022 Order’s effective date, the City’s LRO successfully c ertified the City’s continued regulatory coverage under the WDR in the California Integrated Water Quality System (CIWQS) Sanitary Sewer System Database.

This permit, among other things, requires local public sewer collection system agencies, referred to as “Enrollees,” to develop a Sewer System Management Plan (“SSMP”).

SSMPs must be self-audited at least every three (3) years and updated every six (6) years from the original adoption date by the Enrollee’s governing board. The original SSMP must have been approved by the governing board of the Enrollee at a public meeting and adopted.

The six-year SSMP update must also be approved and certified as do all significant updates to the SSMP. The SSMP, all references in the document, and the adoption documents by the governing board must be available on the agency website or submitted to the SWRCB upon adoption or recertification. Enrollees do not send their SSMP to the State or Regional Water Boards for review or approval, but must make it publicly available, and upload an electronic copy to the spill database or provide a link to the Enrolle es’ website where the SSMP is posted.

The two major components of the GWDR are:

City of Manhattan Beach SSMP

11 1. Owners and operators of publicly owned collection Sewer Systems, a mile long or greater, apply for coverage under the GWDR; and

2. Owners and operators develop and implement a system specific Sewer System Management Plan (SSMP).

The SSMP must be self -audited at least every t hree years and updated every six years.

The last SSMP update for the City of Manhattan Beach was in March 28, 2022 and the City performed its last internal audit on February 4, 2025

See Appendix E for Self-Audit report.

Areas of Concern:

• Cleaning and CCTV mileage recordkeeping have faced challenges and do not have full data for the year of 2024.
• CCTV mileage recordkeeping and cleaning have encountered challenges and do not have complete data for the year 2024.

Appendix 14 includes the Notice of Inspection, pre -inspection questionnaire, inspection report, and sign -in sheet. Appendix 15 includes the Notice of Violation and inspection findings. Appendix 16 includes the City’s response to the violations and areas of concern, planned amendments, FY 2021-2026 CIP Budget, Completed Priority Projects,, manhole with root issues resolved, hydro cleaning daily report, and wastewater station daily worksheet.

City of Manhattan Beach SSMP

12 i. Organization of SSMP

Section D.13 of the SSS WDR, requires all Enrollees to development an SSMP and make it available to the public and to the SWRCB and RWQCB. The SSS WDR further specifies eleven (11) mandatory Elements that must be addressed in the SSMP. The SSS WDR also requires that the SSMP be audited at least every t hree (3) years from the original governing board approval date and updated or revised and re -certified by the governing board at least every six years from adoption and must include any significant changes to the SSMP, as specified in Section D.14 of the SSS WDR. This guide is written to assist Enrollees in developing and updating SSMPs.

The eleven (11) required SSMP Elements that must be included in an SSMP are as follows:

1. Goals

2. Organization

3. Legal Authority

4. Operation and Maintenance Program

5. Design and Performance Provisions

6. Spill Emergency Response Plan (SERP)

7. Sewer Pipe Blockage Control Program

8. System Evaluation and Capacity Assurance and Capital Improvements

9. Monitoring, Measurement, and Program Modifications

10. Internal Audits

11. Communication Program
If an Enrollee (the City) modifies amends or changes any of the Elements as a result of an audit, changes in its operating philosophies, or new technology additions, those changes must be specified and included in an SSMP Change Log now required to be included in an appendix D to the SSMP (MRP Section E.3.).

City of Manhattan Beach SSMP

13 Chapter 1 Goals

This SSMP element identifies goals and schedules the City has set for the management, operation and maintenance of the sewer system and discusses the role of the SSMP in supporting these goals. These goals provide focus for City staff to continue high -quality work and to implement improvements in the management of the City’s wastewater collection system, reduce and prevent spills, and contain and mitigate spills. This section fulfills the requirement of SWRCB SSMP Element 1 - Goals

While there are many other relevant components and findings within the WDR, the major components identified above represent most of the State Water Board’s regulatory expectations for the implementation of the WDR. Th e regulatory audit is intended to provide an analysis of the current programs and practices within the City of Manhattan Beach that address the above issues. This document will provide recommendations to ensure the development of appropriate SSMP programs and an appropriate time schedule necessary to comply with the WDR.

1.1 Regulatory Requirements

According to State Water Resources Control Board Order No. 2022-0103-DWQ (2022 Order), the goal of the SSMP is to provide a plan and schedule to properly manage, operate, and maintain all parts of the sanitary sewer system. This will help reduce and prevent spills, as well as mitigate any spills that do occur.

The intent of the WDR is to provide consistent statewide requirements for managing and regulating sanitary sewer systems throughout California. The State Water Board recognized a need to provide this consistent regulatory measure because many of the Regional Water Boards were beginning to implement similar measures inconsistently throughout the State, which was creating confusion in the discharger community. The State Water Board believes that providing a consistent regulatory measure that identifies regulatory expectations and comprehensive spill data will ultimately yield better collection system management and performance.

There are three major components to the WDR, including:
- Prohibitions;
- Sanitary Sewer Management Plan (SSMP) Elements; and - Spill Reporting
City of Manhattan Beach SSMP

14 1.2 Sewer System Management Plan Update Schedule

*Per Section 5.5 and Attachment E1, Section 3.11 of General Order, Plan updates are due within six years after the required d ue date of the Enrollee’s last Plan Update.
**Per Section 5.4 and Attachment E1, Section 3.10 of the General Order, the Audit Report is due within six months after the e nd of the required audit period.

1.3 City Service Area and Sewer System Asset Overview

The City of Manhattan Beach is located 19 miles southwest of Los Angeles on the southerly end of Santa Monica Bay, in Los Angeles County. The City of Manhattan Beach has a city area of 3.88 square miles with a population of 33,369 based on the 2023 Census. The City’s owned and operated sewer collection system is made up of a network of gravity sewers, pump stations, and force mains. The gravity system consists of approximately 81.6 miles of pipe, and 2 ,086 manholes and clean outs. The system also includes eight pump stations and 5,114 feet of associated force mains.

The City’s Public Works Department manages and collects data for the City’s sanitary sewer collection system. Although the City maintains its sewer main lines, the lateral lines that connect individual homes and businesses to the main line are considered the responsibility of the property owner under the local ordinance: Title 5 – Sanitation and Health (MBMC 5.36.240). The majority of the local sewers lines tie into one of the Los Angeles County Sanitation District (LACSD) trunk sewers crossing the City. The sewage is then conveyed by gravity flow to the LACSD’s Joint Water Pollution Control Plant in the City of Carson. The number of residential, commercial, and industrial service connections in the City is currently 13,251. The City has two low-flow diversion structures that divert stormwater to the sanitary sewer.

The City currently has no unique service boundary conditions.

References to the City’s sanitary sewer system map can be found in Section 4.2 of this document.

1.4 SSMP Goals

The City of Manhattan Beach Public Works Department prides itself in providing high quality services to the City’s many residents and businesses. Providing safe, responsive, and reliable sewer service is a key component to fulfilling the City’s goal. The Public Works Department is cautious and mindful of the importance of their role in the City’s day-to-day functions. Accordingly, the Public Works Department provides safe, reliable, efficient, and SSMP Update Due Dates
8/2/2025 8/2/2031 8/2/2037 8/2/2043
Audit Due Dates
End of Audit
Period
Audit
Due Date
End of Audit
Period
Audit Due
Date
End of Audit
Period
Audit Due
Date
End of Audit
Period
Audit Due
Date
8/2/2024 2/2/2025 8/2/2027 2/2/2028 8/2/2030 2/2/2031 8/2/2033 2/2/2034 Annual Report (due April 1st annually)
Training Programs (Ongoing)
City of Manhattan Beach SSMP

15 cost-effective services to ensure continuity of operations throughout the City. In support of this goal, the City has developed the following goals for the proper management, operation, and maintenance of its sewer system.

1. Minimize sanitary sewer overflows.

2. Prevent public health hazards.

3. Minimize inconveniences by responsibly handling interruptions in service.

4. Protect the large investment in the collection system by maintain adequate capacities and extending useful life.

5. Prevent unnecessary damage to public and private property.

6. Use funds available for sewer operations in the most efficient manner

7. Convey wastewater to treatment facilities with a minimum of infiltration, inflow and exfiltration.

8. Provide adequate capacity to convey peak flows

9. Perform all operations in a safe manner to avoid personal injury and property damage

This SSMP supplements and supports the City’s existing Operation and Maintenance Program and goals by providing high-level, consolidated guidelines and procedures for all aspects of the City’s sewer system management. The SSMP will contribute to the proper management of the collection system and assist the City in minimizing the frequency and impacts of spills by providing guidance for appropriate maintenance, capacity management, and emergency response.

1.5 Monitoring and Reporting Plan Requirements
All changes to this Element of the SSMP must be recorded along with the date and person responsible for the changes on the SSMP Change Log (MRP at section E.3.) attached as an appendix D to the SSMP. Enrollees should also consider the addition of separate appendices for copies of all adoption and recertification documents and all audit reports completed by the Enrollee

1.6 References

2022 SSS WDR -
https://www.waterboards.ca.gov/board_decisions/adopted_orders/water_quality/2022/w qo_2022-0103-dwq.pdf

City of Manhattan Beach SSMP

16 Chapter 2 Organization

The intent of the Organization element is to identify persons, by name, responsible for implementing the SSMP, responding to spill events, and meeting the spill reporting requirements, including drafting, and certifying spill reports and providing other information required by the CIWQS Online Database. This section fulfills the requirement of SWRCB SSMP Element 2 - Organization.

2.1 Regulatory Requirements

According to State Water Resources Control Board Order No. 2022-0103-DWQ Attachment D of Section 2, the SSMP must identify the:

a. Name of the Legally Responsible Official
b. Names and telephone numbers , email addresses for management, administrative, and maintenance positions responsible for implementing specific measures in the SSMP program.
c. Identify lines of authority in an organization chart or similar document with a narrative explanation; and
d. Chain of communication for reporting s pills, from receipt of a complaint or other information, including the person responsible for reporting s pills to the State and Regional Water Quality Control Board (RWQCB) and other agencies if applicable (such as County Health Officer, County Environmental Health Agency, and/or State Office of Emergency Services (OES)).

2.2 Legally Responsible Official

The Utilities Division Manager , Jeffrey Page , is the authorized representative for the execution of the compliance actions required under the WDRs. This includes, but not limited to, signing and certifying all reports and correspondence as required under this order.

2.3 Management and Organizational Structure

The organization chart for management, operation, and maintenance of the City’s wastewater collection system is shown in Figure 1 – Organization Chart of Sewer Staff.

The phone numbers and email addresses for designated staff are included in Table 1 – Sewer Staff Contact Information.

City of Manhattan Beach SSMP

17 Figure 1 – Organization Chart of Sewer Staff

Description of General Responsibilities

Public Works Director: Approves Public Notifications of a spill and Sewage Stoppage Report, communicates with media, as applicable.

Utilities Manager: Reviews Sewage Stoppage Report and provides to Public Works Director for approval, receives and conveys messages of after-hour spills, certifies online spill reporting, communicates with media, as applicable.

Wastewater Supervisor: Monitors SCADA system, receives and conveys messages of spills to appropriate personnel, provides instructions for reporting to spills, completes online spill reporting, provides Sewage Stoppage Report to Utilities Manager.

Sewer Maintenance Worker: Responds to spills, obtains onsite information regarding the spill, assists in containment, clean-up, and maintenance of the collection system. One on-call person is assigned to be on standby seven days a week , with a 30 -minute response time after business hours.

Ted Semaan
Interim Public Works
Director
Jeffrey Page
Utilities Division
Manager
Joe DeFrancesco
Interim Wastewater
Supervisor
Gustavo Castanon
Sewer Maintenance
Worker
Daniel Canizales
Sewer Maintenance
Worker
Jose E. Martinez
Sewer Maintenance
Worker
Cody DeCesare
Lead Sewer
Maintenance Worker
Raymond Mendoza
Sewer Maintenance
Worker
Rudy Guerrero
Sewer Maintenance
Worker
City of Manhattan Beach SSMP

18 Table 1 – Enrollee Contacts Responsible for SSMP

Name Title Phone Number Email Address
Ted Semaan Interim Public Works Director (310) 802-5302 [email protected] Jeffrey Page Utilities Manager (310) 802-5320 [email protected] Joe DeFrancesco Interim Utilities Supervisor –
Sewer/Stormwater
(310) 802-5310
[email protected]
Gustavo Castanon Sewer Maintenance Worker (310) 600-0475 [email protected] Daniel Canizales Sewer Maintenance Worker (310) 600-0475 [email protected] Jose E. Martinez Sewer Maintenance Worker (310) 600-0475 [email protected] Cody DeCesare Lead Sewer Maintenance
Worker
(310) 600-0475 [email protected]
Raymond Mendoza Sewer Maintenance Worker (310) 600-0475 [email protected] Rudy Guerrero Sewer Maintenance Worker (310) 600-0475 [email protected]

SSMP Element Responsible
Party
(Position)
Responsib
le Party
(Name)
Phone
Number
Email Address

Introduction

1 – Goals Interim Public
Works Director
Ted Semaan (310) 802-5302 [email protected]
2 – Organization Interim Public
Works Director
Ted Semaan (310) 802-5302 [email protected]

3 – Legal Authority Utilities Manager Jeffrey Page (424)445-6577

[email protected]
4 – O&M Program Interim Utilities
Supervisor –
Sewer/Stormwater
Joe
DeFrancesco
(424)445-6566 jdefrancesco@manhattanbeach.
gov
5 – Design &
Performance
Provisions
Sr. Civil Engineer Marzena
Laskowska
(310) 802-5325 mlaskowska@manhattanbeach.
gov
6 – Overflow
Emergency Response
Program
Interim Utilities
Supervisor –
Sewer/Stormwater
Joe
DeFrancesco
(424)445-6566 jdefrancesco@manhattanbeach
.gov
7 – FOG Control
Program
Water Compliance
Supervisor
Sandy Nimat (310) 802-5338 [email protected]
8 – SECAP Sr. Civil Engineer Marzena
Laskowska
(310) 802-5325 mlaskowska@manhattanbeach.
gov
9 – Monitoring,
Measurement, and
Program
Modifications
Interim Utilities
Supervisor –
Sewer/Stormwater
Joe
DeFrancesco
(424)445-6566 jdefrancesco@manhattanbeach
.gov
10 – SSMP Program
Audits
Water Compliance
Supervisor
Sandy Nimat (310) 802-5338 [email protected]
11 – Communication Utilities Manager

Jeffrey Page (424)445-6577 [email protected]
City of Manhattan Beach SSMP

19 Change Log Utilities Manager

Jeffrey Page (424)445-6577 [email protected]

2.4 Spill Reporting Chain of Communication

The chain of communication for responding to and reporting spills to the appropriate regulatory agencies is depicted in Figure 2 – Spill Reporting Flow Chart. Table 2 lists the contact phone numbers for the parties included in the chain of communication. Chapter 6 Spill Emergency Response Plan details the procedures and responsibilities during an spill event, and the procedure is briefly summarized below:

The City encourages citizens to report spills to the Public Works Department during business hours. All calls are forwarded to the Utilities or Street Division at the Public Works Department if residents call the Fire Department or City Hall. For after -hours, the City utilizes a Regional Communicati on Center (RCC). There are four maintenance workers, one of whom is on standby seven days a week. The dispatchers are trained to page the on-call maintenance phone for water, sewer, or street -related incidents. O nce at the scene, staff will:

• Investigate the site
• Determine the cause of the problem
• Request reinforcement, if necessary
• Contain and mitigate
• Correct the spill and clean-up
• Notify the proper regulatory agencies, as appropriate • Document response actions by completing the internal Spill Report Form • Report the Spill in the CIWQS Spill Online Reporting Database

2.5 Monitoring and Reporting Plan Requirements

The MRP states that:
• Any LRO shall be registered with the SWRCB; link to CIWQS User Registration (LROs and Data Submitters) at https://ciwqs.waterboards.ca.gov/ciwqs/newUser.jsp. • Any enrollee employee or contractor may enter draft data into the CIWQS Online Database on behalf of the enrollee if authorized by the LRO and registered with the State Water Board. However, only LROs may certify reports in CIWQS.

The Enrollee shall maintain continuous coverage by an LRO. Any change of a registered LRO, including deactivation or a change to the LRO’s contact information, shall be submitted by the Enrollee to the SWRCB within 30 days of the change by email at [email protected] and copying the appropriate Regional Water Quality Control Board at [email protected]

2.6 References

2022 SSS WDR (complete with appendices) -
https://www.waterboards.ca.gov/board_decisions/adopted_orders/water_quality/2022/w qo_2022-0103-dwq.pdf
City of Manhattan Beach SSMP

20 Table 2 – Contact Numbers for Spill Chain of Communication

Contact Phone Number
Utilities Division (310) 802-5304
Public Works Department – After Hours (310) 545-4566
Public Works Department – Daytime (310) 802-5313
Office of Emergency Services (OES) (800) 852-7550
Emergency Service Coordinator
(Sherryl Jones)
(310)729-8322
L. A. County Department of Health (213) 974-1234
City Hall (310) 802-5000
Fire Department (310) 802-5200
Police Department (310) 545-4566
City of Manhattan Beach SSMP

21 Figure 2 – Spill Reporting Flow Chart

YES

Wastewater
Supervisor
Dispatch
Worker to
Investigate
Valid?
NO
Notify
Appropriate
Jurisdiction

After-
Hours?

Hazardous
Involved?
Wastewater
Supervisor
dispatches
Notify Fire
Department
Public Works
Department
Regional
Communication
Center (RCC)

YES

Reporting Source
Contain
Clean- Up
& Prepare
Reports

City of Manhattan Beach SSMP

22 City of Manhattan Beach SSMP

23 Chapter 3 Legal Authority

This chapter of the SSMP discusses the legal authority , including the Manhattan Beach Municipal Code, to comply with the SSMP requirements through sewer ordinances and service agreements with other agencies. This section fulfills the requirement of SWRCB SSMP Element 3 - Legal Authority.

3.1 Regulatory Requirements

According to State Water Resources Control Board Order WQ 2022-0103 Section 3, the enrollee must demonstrate, through sanitary sewer system use ordinances, service agreements, or other legally binding procedures, that it possesses the necessary legal authority to:

a. Prevent illicit discharges into its sanitary sewer system (examples may include infiltration and inflow (I/I), 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. c. Require that sewers and connections be properly designed and constructed. d. Ensure access for maintenance, inspection, or repairs for portions of the lateral owned or maintained by the Public Agency.
e. Limit the discharge of fats, oils, and grease and other debris that may cause blockages, and
f. Enforce any violation of its sewer ordinances.

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

3.2 Illicit Discharge Prevention

The City of Manhattan Beach amended the Code of Ordinance, Title 5 – Sanitation and Health, to include Chapter 5.36 – Sewers, Sewage Disposal – City Sewage System. The purpose of this chapter is to prevent discharges from entering the sewer pipelines and drainage that would obstruct or damage the system, interfere with treatment, or threaten harm to human health or the environment. Sections from Chapter 5.36 that specifically limit the illicit discharges are included in Appendix 1 – Code of Ordinance , Title 5 – Sanitation and Health Chapter 5.36 – Sewer, Sewage Disposal – City Sewage System and identified in Table 3 Legal Authority Checklist.

3.3 Collaboration with Storm Sewer Agencies for Emergency Spill Responses The City of Manhattan Beach collaborates 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.

3.4 Design, Construction, and Installation Requirements City of Manhattan Beach SSMP

24 The Public Works Department, Engineering Division , develops and enforces standards that require all sewers constructed in the City comply with standard plans, specifications, policies, and practices. This applies to private developer designed and constructed projects. These standards are continuously updated to incorporate new materials and construction methods to ensure that the completed installations meet the high- performance standards of the City. Construction plans and technical specifications are prepared for all new or rehabilitation projects that document the standard of performance for the construction and the standards for acceptance. Service connections must be designed and constructed to meet the City of Manhattan Beach Plumbing Code. The City does not accept the installed components until they pass all required performance tests, paid fees, and a field acceptance from the Public Works Building Inspector. Every connection made with any public sewer of the City shall be made in accordance with the Sewer Connection Special Plans and Specifications approved by the Council designated and numbered as MBSS-200A-0(ST-5) on file in the office of the City Clerk and hereby referred to and by this reference incorporated herein and made a part hereof, and only with materials as are therein specified. Sections from Chapter 5.36 of the Manhattan Beach municipal code that support these requirements are included in Appendix 1 - Code of Ordinance, Title 5 – Sanitation and Health Chapter 5.36 – Sewer, Sewage Disposal – City Sewage System and identified in Table 3 Legal Authority Checklist.

3.5 Lateral Maintenance Access

The City does not maintain private lateral sewer lines. Property owners are responsible for proper installation, operation and maintenance of both upper and lower laterals, including laterals on the City -owned easement. Property owners are required to obta in permits from the Department of Community Development for work on private properties and the Department of Public Works for work in the public right -of-way. The section from Chapter 5.36 of the Manhattan Beach municipal code that supports these requirements is included in Appendix 1 - Code of Ordinance, Title 5 – Sanitation and Health Chapter 5.36 – Sewer, Sewage Disposal – City Sewage System and identified in Table 3 Legal Authority Checklist.

3.6 Fats, Oils and Grease Discharge Limitations

The City of Manhattan Beach amended the Code of Ordinance, Title 5 – Sanitation and Health, to include Chapter 5.38 – FATS, OILS AND GREASE MANAGEMENT AND DISCHARGE CONTROL. The purpose of this chapter is to facilitate the maximum beneficial public use of the City's s anitary sewer collection system while preventing blockages of sewer lines resulting from discharges of FOG to the system, and to specify appropriate FOG discharge requirements for FSEs discharging into the City's sewer system. Sections that specifically li mit the discharge of FOG that may cause blockages are include in Appendix 2 - Code of Ordinance , Title 5 – Sanitation and Health Chapter

5.38 – Fats, Oils and Grease Management and Discharge Control and identified in Table 3 Legal Authority Checklist.

3.7 Monitoring and Reporting Plan Requirements
City of Manhattan Beach SSMP

25 The City follows the 2022 Order of the MRP per the Attachment E2 – Summary of Notification, Monitoring and Reporting Requirements. .

3.8 Enforcement Provisions

The City’s Ordinance provides the authority to carry out all inspection, surveillance, and monitoring procedures necessary to determine, independent of information supplied by FSE’s, compliance or noncompliance by industrial users with applicable pretreatment standards and requirements. The Ordinance gives the Director of Public Works the power, jurisdiction, and supervision over places of discharge of wastewater into the sewer system, necessary to adequately enforce and administer all applicable State and Federal laws. Sections in Chapter 5.38 of the Manhattan Beach municipal code that support these requirements are include in Appendix 2 - Code of Ordinance , Title 5 – Sanitation and Health Chapter 5.38 – Fats, Oils and Grease Management and Discharge Control and identified in Table 3 Legal Authority Checklist.

3.9 Easement Accessibility Agreements
Per Chapter 5.38.120 of the City’s Ordinance, persons or occupants of premises where wastewater is created or discharged shall allow the Director, or City representatives, reasonable access to all parts of the FSE and all wastewater generating and disposal facilities for the purposes of inspection and sampling during all times the discharger's facility is open, operating, or any other reasonable time. No person shall interfere with, delay, resist or refuse entrance to City representatives attempting to inspect any FSE or facility involved directly or indirectly with a discharge of wastewater to the City's sewer system

City of Manhattan Beach SSMP

26 Table 3 – Legal Authority Checklist

Requirement Title 5, Code of Ordinance

ILLICIT DISCHARGES
Prevent illicit discharges into the
wastewater collection system
Chapter 5.36 Sections: 250, 260,
270, 280, 290, 300, 330

PROPER DESIGN AND CONSTRUCTION
Require that sewers and
connections are
properly designed and constructed
Chapter 5.36 Section: 170, 310

LATERAL ACCESS
Ensure access for maintenance,
inspection, or repairs for portions of
the service lateral owned or
maintained
Chapter 5.36 Section: 240 (shall be
maintained by property owner)

FOG SOURCE CONTROL
Limit the discharge of FOG and
other debris that may cause
blockages including permits and
requirements
Chapter 5.38 Sections: 015, 020,
025,030, 035, 045, 050, 055, 060,
065, 070,
Requirements to install grease
removal devices (such as
interceptors)
Chapter 5.38 Section: 105

ENFORCEMENT
Enforce any violation of sewer
ordinance
Chapter 5.38 Sections: 110, 115,
120,125, 130, 135, 140, 145, 150,
155, 160, 65, 170, 175, 180

EASEMENT ACCESSIBILITY
Ensures access for maintenance Chapter 5.36 Section: 120

3.10 References

City of Manhattan Beach Municipal Code Title 5, Sanitation and Health

5.36 – Sewers, Sewage Disposal – City Sewage System

https://www.municode.com/library/ca/manhattan_beach/codes/code_of_ordinances?no deId=TIT5SAHE_CH5.36SESEDIITSESY

5.38 - Fats, Oils and Grease Management And Discharge Control

https://www.municode.com/library/ca/manhattan_beach/codes/code_of_ordinances?no deId=TIT5SAHE_CH5.38FAOIGRMADICO
City of Manhattan Beach SSMP

27 SSS WDR -
https://www.waterboards.ca.gov/board_decisions/adopted_orders/water_quality/2022/w qo_2022-0103-dwq.pdf

City of Manhattan Beach SSMP

28 Chapter 4 Operation and Maintenance Program

This chapter of the SSMP discusses the operation and maintenance program to comply with the SSMP requirements through preventive and cleaning routines, staff training, and appropriate equipment. This section fulfills the requirement of SWRCB SSMP Element 4 - Operation and Maintenance Program.

4.1 Regulatory Requirements

According to State Water Resources Control Board Order No. WQ 2022-0103-DWQ. The enrollee must include those elements that are appropriate and applicable to the Operation and Maintenance Program:

a. Maintain an up -to-date map of the sanitary sewer system and procedures for maintenance. The map(s) must show all gravity line segments and manholes, pumping facilities, pressure pipes and valves, and applicable storm water conveyance facilities; b. Describe routine preventive operation and maintenance activities by staff and contractors; including a system for scheduling regular maintenance and cleaning of the sanitary sewer system with more frequent cleaning and maintenance targeted at known problem areas , including areas with tree root problems . The Preventative Maintenance (PM) program should have a system to document scheduled and conducted activities, such as work orders;
c. Develop rehabilitation and replacement plan to identify and prioritize system deficiencies and implement short-term and long-term rehabilitation actions to address each deficiency. The program should include regular visual and CCTV inspections of manholes and sewer pipes, and a system for ranking the condition of sewer pipes and scheduling rehabilitation. Rehabilitation and replacement should focus on sewer pipes that are at risk of collapse or prone to more frequent blockages due to pipe defects.

Finally, the rehabilitation and replacement plan should include a capital improvement plan that addresses proper management and protection of the infrastructure assets.

The plan shall include a time schedule for implementing the short and long term plans plus a schedule for developing the funds needed for the capital improvement plan; d. Provide training on a regular basis for staff in sanitary sewer system operations, maintenance, and require contractors to be appropriately trained; and e. Provide equipment and replacement part inventories, including identification of critical replacement parts.

4.2 Collection System Mapping

The City’s GIS mapping database, maintained by the GIS Manager, shows all features of the sanitary sewer system, including lift stations and pumping facilities, gravity line segments, manholes, force mains, and valves. Other information layers are used for recording and tracking CCTV -identified defects, such as broken pipe s, holes in pipes, offset joints, roots, and grease. The maps are routinely updated to include sewer division capital projects and new or rehabilitated sewer system components. The Public Works Engineering and Utilities Divisions are responsible for providing as-built information to the GIS section for updating the maps. This system is a powerful tool when used to quickly City of Manhattan Beach SSMP

29 access critical information during an emergency response . These records serve as reference for all future Capital Improvement planning.

City’s Website

Map Gallery (pdfs)
https://www.manhattanbeach.gov/departments/information-technology/gis-and- maps/map-gallery:

Sewer System:
https://www.manhattanbeach.gov/departments/public-works/utilities-division/sewer- system

Interactive Mapping:
https://permitmaps.citymb.info/Html5Viewer/index.html?viewer=mbca&_ga=2.11549005

3.2059370828.1647203212-1275532579.1647203212

4.3 Routine and Preventive Maintenance Program

The City operates and maintains a sewer system that serves a population of approximately 35,000 people within the City area of 3.88 square miles . The City’s system consists of approximately 81.6 miles of sewer lines, 2,086 manholes and clean -outs, 8 lift stations, and 5, 114 feet of associated force mains. The City has a proactive and preventive maintenance program for its sewer system. The maintenance yard is strategically located in an area such that travel time is minimized when addressing routine and emergency situations. Given the City’s proximity to the sea, a sewer - system-overflow can reach the ocean in a relatively short period of time. Accordingly, the City’s sewer system preventative maintenance program is aggressive so as to obviate raw sewage reaching the ocean. The Waste water Staff respond to all sewer emergency calls received 24/7, regardless of nature and ownership – public and private. During bus iness hours, all reported and observed problem sewers are inspected and addressed within 15 minutes.

During after -hours, all reported and observed sewer problems are inspected and addressed within sixty minutes. Problem sewers are identified, prioritized a nd scheduled for maintenance based on a comprehensive review of the maintenance history and system characteristics of all the sewers in the City including overflows, blockages, age, material and condition.

The City has acquired the work order management system inframaps and the city is in the process of training personnel. T he City does not have written standard operations and maintenance procedures for its pump/lift stations; however, the City does use a standardized check list for the weekly pump/lift station inspections (included at the end of Appendix 16 – Notice of Violation Response). For routine cleaning, the collection system is organized into 25 districts based on their tributary and the goal is to clean out each district twice a year. Maintenance includes high velocity sewer cleaning, vacuuming, and manual rodding. Closed circuit television inspections are performed at the site of all sewer overflows within twenty-four hours to identify any necessary repairs or special maintenance needs. These may trigger further reviews to determine cause and/or immediate or accelerated corrective actions. Corrective action schedules are set based City of Manhattan Beach SSMP

30 on the severity of the problem. Preventative maintenance activities that the City currently conducts include the following:

• Fats, Oils, and Grease (FOG) Cleaning
Overflows caused by blockages from FOG are monitored for location and needed cleaning frequency. The City performs increased rotation of cleaning in sewers with known FOG concentrations. The City’s FOG Ordinance provides the legal authority to regulate and thus minimize FSE FOG contribution to the sewer system; and FOG Source Control Program Manual provides the FSE’s with information on FOG control Best Management Practices.

The FOG Source Control Program 2010 Manual is draft copy.

City’s Website for Municipal Code Title 5: Sanitation and Health

https://library.municode.com/ca/manhattan_beach/codes/code_of_ordinances?nodeI d=TIT5SAHE

• Root Control Strategy
Roots are the main issue the City faces, since the sandy soil conditions allow roots to grow quickly in search of a water source. The City performs routine mechanical root removal as an extensive cleaning schedule especially in areas of known root intrusion.

This schedule has prevented major root issues such as veil -type and root balls originating from private laterals.

• Odor Control Strategy
The City’s aggressive sewer line cleaning program has served to effectively control odor. The entire 81.6 miles of sewer lines are cleaned twice a year. “Extra attention” line, those with known root and grease issues, are cleaned twice a month. The City’s six wet wells are inspected and skimmed twice a week, and completely vacuumed out once a year.

• Pump Stations Maintenance
The Public Works Utilities office serves as the main center for SCADA monitoring and control of pump stations. Utilities Electrician and Sewer Maintenance Worker inspect the eight lift stations once per week. Southern California Edison is contracted to perform overall plant energy efficiency testing, infrared panel inspections, meg ohm testing, vibration analysis and electric panel cleaning. The City’s seven of eight sewage lift stations have built-in backup emergency and redundancy power systems with automatic transfer switches. The power systems are start tested weekly by staff, and undergo motor and generator servicing bi- annually by Power Plus, Inc. The back- up generator is tested by running it once per month under no -load conditions, in compliance with local Air Quality Management District regulations.

4.4 Rehabilitation and Replacement Plan

The City plans to launch a five-year program to inspect its approximately 2,086 manholes and cleanouts, conduct CCTV inspections of its 81.6 miles of sewer lines and perform a City of Manhattan Beach SSMP

31 structural rehabilitation analysis of the findings. The city has acquired its own CCTV equipment to commence this initiative. The CCTV recordings are prioritized per the database summary developed through the analysis. Each reach will be assigned a condition grade per the PACP standards and prioritization will be based on the type and number of defects identified in each recording. Pipes that are believed to be at higher risk of collapse and blockages, and therefore have a greater potential for causing a sa nitary sewer overflow will be given the highest priority. Operation and maintenance (O&M) defects such as grease, roots, and deposits are considered separately.

For each of the identified structural deficiencies, a Rehabilitation and Replacement Plan is developed along with an engineer’s cost estimate. The estimates include the construction cost, as well as the design, inspection, administration costs and contingencies. The Rehabilitation and Replacement Plan implementation entails a variety of short-, medium-, and long-term activities that ensure the sustainability of the sanitary sewer system infrastructure.

Short, Medium and Long-Term CIP Schedule

CCTV inspections and physical inspections provide up -to-date data that is used by the City to evaluate the hydraulic and structural condition of its sanitary sewer system. From this assessment, deficiencies are identified, evaluated, improvement projects i dentified and scheduled. To assess the condition of CCTV inspected sewers, the City uses a five- category rating system based on the types and severity of defects. The Categories range from Category A (Excellent) to Category E (Emergency Condition). The con dition ratings trigger a follow-up action that includes either rehabilitation within a certain time frame or a follow-up inspection. Rehabilitation projects are developed and scheduled for implementation on a prioritized basis with other identified needs. Category A and B Sewers are in excellent to good condition and are scheduled for continued inspections and monitoring. Category C condition sewers fall into the long -term CIP schedule. They are in fair condition and are scheduled for follow -up inspections every five years until repairs have been completed. Category D condition sewers fall into the medium-term CIP schedule. They are in a condition that requires close monitoring and may require rehabilitation within five years. Preventive measures are intensified, as appropriate, to avoid emergency situations and follow -up inspections are conducted annually. Category E condition sewers fall into the short-term CIP schedule and they need emergency repair.

These are sewers where a pipe failure has already occurr ed or there is a full flow obstruction/blockage and immediate repairs are initiated.

4.5 Staff and Contractor Training

• Sewer Maintenance Workers are initially trained in the proper operation and maintenance of all major sewer collections equipment and facilities by the Utilities Supervisor – Sewer/Stormwater.
• Critical equipment training is facilitated by outside contractors in areas of fork lift operation, backhoe and bob-cat operation, crane operation • Every staff member receives periodic formal safety training in confined space entry, trench shoring, traffic control, heat illness, and hazardous materials management. • On-the-Job cross training is actively pursued to ensure staff has a proficient working City of Manhattan Beach SSMP

32 knowledge of all aspects of sewer system maintenance. • Task proficiency is a requirement for all job positions, and training records are maintained to monitor completed classes.
• Disaster training exercises are conducted twice a year, city -wide. The exercise is a live disaster simulation, which includes outside contractors. The collection system trains for by setting up a bypass scenario for a pump station. • The spill volume is involved in the training for field operators to know how to approach the situation.
• Staff is trained in the Best Management Practices of the Fats, Oils, and Grease (FOG) Control Ordinance, and has been instructed to report violations when encountered in the course of a working day.
• Staff are provided with 24/7 emergency contact numbers for contractors who perform sewer system repair, in addition to contact numbers for three neighboring cities – Hawthorne, El Segundo and Redondo Beach – who can lend aid in the form of equipment and personnel.
• The City has contracted staff trained to use the electronic CIWQS reporting for City staff to submit the data.

More information about the preventive maintenance and staff training is provided in Appendix 8 – Wastewater Master Plan – Section 8, Condition Assessment.

4.6 Equipment and Replacement Part Inventory

The City maintains an inventory of equipment, replacement parts, and supplies and follows a structured process to ensure an up -to-date accounting and complete inventory of equipment and replacement parts for their specific duties. Parts that are needed for preventive maintenance are identified ahead of time for each specific maintenance task.

Parts are secured prior to the start of preventive maintenance. Redundancy is provided for key pump station equipment and all pump stations have backup power to minimize the risk of a complete shut -down. As a backup, managers have credit authority to purchase needed materials and supplies from local vendors of non -stock items when they are critically needed. The City maintains equipment and performs testing as needed to guarantee a ready state for immediate deployment in an emergency. A complete list of the inventory is provided in Appendix 3 – Equipment and Replacement Parts Inventory and Existing Pump Inventory is provided in Appendix H.

4.7 Monitoring and Reporting Plan Requirements

a. The 2022 MRP update included new information to be implemented for the Spill Technical Report for the spill causes and circumstances “Photographs illustrating the spill origin, the extent and reach of the spill, drainage conveyance system entrance and exit, receiving water, and post -cleanup site conditions”, “Description of the pipe material, and estimated age of the pipe material, at t he failure location”, “Description of the impact of the spill”.
b. The 2022 MRP update to the enrollee’s response to spill included details to the final corrective actions such as “Local regulatory enforcement action taken against an illicit City of Manhattan Beach SSMP

33 discharge in response to this spill, as applicable”, “Identifiable system modifications, and operation and maintenance program modifications needed to prevent repeated spill occurrences”, and “Necessary modifications to the Emergency Spill Response Plan to incorporate lessons learned in responding to and mitigating the spill”. Any changes to the Preventive Maintenance Schedule could be included as a part of a corrective action plan.
c. The 2022 MRP updates to the new Technical Report requirement for spills ≥ 50,000 gallons does require a “List of pollutant and parameters monitored, sampled and analyzed as required in section 2.3 (Receiving Water Monitoring) of this Attachment”, “Laboratory results, including laboratory reports”, and “Other regulatory agencies receiving sample results (if applicable)”. The 2022 MRP included a new section of information for “Evaluation of spill impact(s), including a description of short -term and long-term impact(s) to beneficial uses of the surface water”. d. The 2022 MRP includes a new Category 4 Spill in the Technical Report to “report and certify the estimated total spill volume exiting the sanitary sewer system, and the total number of all Category 4 spills to the online CIWQS Sanitary Sewer System Database, within 30 calendar days after the end of the month in which the spills occurred”. The category 4 is to be implemented in the corrective action plan.

4.8 References

City of Manhattan Beach Capital Improvement Plan
https://citymb.maps.arcgis.com/apps/MapSeries/index.html?appid=9f848041862b41418 965ab94420ee79b

City of Manhattan Beach Wastewater Master Plan (Section 5 & 9) https://www.manhattanbeach.gov/departments/public-works/utilities-division/master- plans

See Appendix 4-9 for Wastewater Master Plan (AKM Consulting engineers, October 21. 2010)
City of Manhattan Beach SSMP

34 Chapter 5 Design and Performance Provisions

This chapter discusses the design standards and specifications to comply with the SSMP requirements for new and/or rehabilitated sewers and other appurtenances. This section fulfills the requirement of SWRCB SSMP Element 5 – Design and Performance Provisions.

5.1 Regulatory Requirements

According to State Water Resources Control Board Order No. No. 2022-0103-DWQ, the enrollee must include the following Design and Performance Provisions:

a. Design and construction standards and specifications for the installation of new sanitary sewer systems, pump stations and other appurtenances; and for the rehabilitation and repair of existing sanitary sewer systems; and b. Procedures and standards for inspecting and testing the installation of new sewers, pumps, and other appurtenances and for rehabilitation and repair projects.

5.2 Design and Construction Standards and Specifications

As noted in Chapter 3, Legal Authority, the Public Works Department, Engineering Division, develops and enforces standards that require all new sanitary sewers and appurtenances constructed to comply with standard plans, specifications, policies, and practices. This applies to private developer designed and constructed projects.

Construction plans and technical specifications are prepared for all new or rehabilitation projects that document the standard of performance for the construction and the standards for acceptance. Service connections must be designed and constructed to meet the City of Manhattan Beach Plumbing Code. Standards are continuously updated to incorporate new materials and construction methods to ensure that the completed design, construction, and installations meet the high-performance standards of the City. These standards include methodology for estimating wastewater design flows and minimum design standards for the collection system pipes, pump stations, and force mains.

Technical information related to Section 5.2 is included in Appendix 4 - Wastewater Master Plan – Section 4, Criteria.

5.3 Procedures and Standards for Installation, Rehab, and Repair Projects

The Public Works Department, Engineering Division, provides inspection on all rehabilitation and new sewer system construction contracts. Written inspection procedures are followed to ensure that sewer system facilities are built to conform to the plans and specifications. Inspections are conducted both on the jobsite and at material fabricators during manufacture and testing. The City does not accept the installed components until they pass all required performance tests and a field acceptance from the Public Works Inspector. New or rehabilitated system components are placed into service upon certification by the Public Works Inspector that they have been installed in accordance with plans and specifications.

City of Manhattan Beach SSMP

35 5.4 Monitoring and Reporting Plan Requirement

The MRP, issued with the SSS WDR, has no requirements to report anything specifically related to the Design and Reporting Standards required in the SSS WDR.

City of Manhattan Beach SSMP

36 Chapter 6 Spill Emergency Response Program (SERP)

This chapter of the SSMP discusses the emergency response procedures for sewer overflows to comply with the SSMP requirements. This section fulfills the requirement of SWRCB SSMP Element 6 – Spill Emergency Response Program.

6.1 Regulatory Requirements

According to State Water Resources Control Board Order No. WQ 2022-0103-DWQ, the enrollee shall develop and implement a spill emergency response plan that identifies measures to protect public health and the environment. At a minimum, this plan must include the following:

a. Proper notification procedures so that the primary responders and regulatory agencies are informed of all spills in a timely manner;
b. Notify other potentially affected entities (for example, health agencies, water suppliers, etc.) of spills that potentially affect public health or reach waters of the State; c. Comply with the notification, monitoring and reporting requirements of this General Order, State law and regulations, and applicable Regional Water Board Orders; d. Ensure that appropriate staff and contractors implement the Spill Emergency Response Plan and are appropriately trained;
e. Address emergency system operations, traffic control and other necessary response activities;
f. Contain a spill and prevent/minimize discharge to waters of the State or any drainage conveyance system;
g. Minimize and remediate public health impacts and adverse impacts on beneficial uses of waters of the State;
h. Remove sewage from the drainage conveyance system;
i. Clean the spill area and drainage conveyance system in a manner that does not inadvertently impact beneficial uses in the receiving waters; j. Implement technologies, practices, equipment, and interagency coordination to expedite spill containment and recovery;
k. Implement pre-planned coordination and collaboration with storm drain agencies and other utility agencies/departments prior, during, and after a spill event; l. Conduct post-spill assessments of spill response activities; m. Document and report spill events as required in this General Order; and n. Annually, review and assess effectiveness of the Spill Emergency Response Plan, and update the Plan as needed.

6.2 Notification Procedures for Spills

The City of Manhattan Beach Utilities Division maintains an up -to-date Sanitary Sewer Overflow Response Plan as mandated by the State Water Resources Control Board, which the City follows to provide formal notice to the Office of Emergency Services (OES).

The City encourages citizens to report overflows to the Utilities Division via the Public Works Department (business hours) and the Regional Communication Center (after - hours). Sewer staff is available 24 hours per day, seven days per week to receive and City of Manhattan Beach SSMP

37 respond to calls, regardless of whether they originate on public or private property. There is a complaint phone log maintained of all calls. Once verified, all sewer s pills regardless of volume or potential impact are reported to all parties in the chain of communication within the City and to the appropriate regulatory agencies, as shown in Figures 1 and 2 in Chapter 2.

Under the Order’s reporting requirements four categories of Spills are defined:
• Category 1. A spill of any volume of sewage from or caused by a sanitary sewer system regulated under this General Order that results in a discharge to:
✓ A surface water, including a surface water body that contains no flow or volume of water; or
✓ A drainage conveyance system that discharges to surface waters when the sewage is not fully captured and returned to the sanitary sewer system or disposed of properly.

Any spill volume not recovered from a drainage conveyance system is considered a discharge to surface water, unless the drainage conveyance system discharges to a dedicated stormwater infiltration basin or facility. A spill from an Enrollee -owned and/or operated lateral that discharges to a surface water is a Category 1 spill; the Enrollee shall report all Category 1 spills per section 3.1 of Attachment E1 (Notification, Monitoring, Reporting and Recordkeeping Requirements) of the General Order. • Category 2. All spills 1,000 gallons or greater of sewage resulting from or caused by, or failure or blockage in the sanitary sewer system that:
✓ A spill of 1,000 gallons or greater, from or caused by a sanitary sewer system regulated under this General Order that does not discharge to a surface water. ✓ A spill of 1,000 gallons or greater that spills out of a lateral and is caused by a failure or blockage in the sanitary sewer system, is a Category 2 spill. • Category 3. All spills equal to or greater than 50 gallons and less than 1,000 gallons from or caused by a sanitary sewer system:
✓ A spill of equal to or greater than 50 gallons and less than 1,000 gallons, from or caused by a sanitary sewer system regulated under this General Order that does not discharge to a surface water.
✓ A spill of equal to or greater than 50 gallons and less than 1,000 gallons, that spills out of a lateral and is caused by a failure or blockage in the sanitary sewer system , is a Category 3 spill.
• Category 4. All spills that are less than 50 gallons and less than 1,000 gallons from or caused by a sanitary sewer system:
✓ A spill of less than 50 gallons, from or caused by a sanitary sewer system regulated under this General Order that does not discharge to a surface water. ✓ A spill of less than 50 gallons that spills out of a lateral and is caused by a failure or blockage in the sanitary sewer system is a Category 4 spill. • Private Lateral Sewage Discharges (PLSD). Sewage discharges that are caused by blockages or other problems within a privately owned lateral. PLSD that the enrollee becomes aware of may be voluntarily reported to the CIWQS Online Spill Database.

Initial reporting of Category 1 and Category 2 Spills must submit a Draft Spill Report to the online CIWQS Sanitary Sewer System Database as soon as possible, but no later than three business days after the spill is known. A final certified spill report must be completed through the Online CIWQS Sanitary Sewer System Database within 15 calendar days of the conclusion of the spill response and remediation, and the user will receive a final spill City of Manhattan Beach SSMP

38 event identification number. Category 3 S pills must be reported to the Online CIWQS Sanitary Sewer System Database within 30 days after the end of the calendar month in which the spill occurred. After the Legally Responsible Official certifies the spills, the online CIWQS Sanitary Sewer System Database will issue a spill event identification number for each spill. Category 4 and/or Lateral Spills (1) no spills occur during a calendar month or (2) only Category 4, and/or Enrollee -owned and/or operated latera l spills (that do not discharge to a surface water) occur during a calendar month, the Enrollee shall certify, within 30 calendar days after the end of each calendar month, either a “No -Spill” certification statement, or a “Category 4 Spills” and/or “Non -Category 1 Lateral Spills” certification statement, in the online CIWQS Sanitary Sewer System Database, certifying that there were either no spills, or Category 4 and/or Non -Category 1 Lateral Spills that will be reported annually . Private Lateral Sewage Di scharges may be reported on the Online CIWQS Sanitary Sewer System Database, but, if reported, should be identified as occurring and caused by a private lateral.

In addition to reporting on the CIWQS Sanitary Sewer System Database, Category 1 Spills, especially those that enter surface waters, must notify to the Office of Emergency Services (OES) within two hours and obtain a notification control number in accordance with California Water Code Section 13271, et seq. Order No. WQ. 2013-0058-EXEC

The City of Manhattan Beach Spill Report Form is included in Appendix 12 – Spill Report Form. The sanitary sewer overflow locations map (from SWRCB Online Incident Map) and reports from 2017 to 2021 are included in Appendix 13 – Spill Map & Reports. Spills from 2007-2009 are summarized in Appendix 8 – Wastewater Master Plan – Section 9, Operation and Maintenance.

6.3 Spill Emergency Response Plan

The City’s Overflow (spill) Response Plan presents a strategy for the mobilization of labor, materials, tools, and equipment to correct or repair any condition which may cause or contribute to a spill. The procedure requires full, immediate, and appropriate attention and response to a sanitary sewer spill with the ultimate goal of minimizing impacts to public health and safety and the environment. Telephone calls to report spills or other maintenance problems are answered 24 hours per day, 7 days per week.

Wastewater personnel are immediately notified upon receipt of a reported potential sewer spill and are instructed to respond immediately, regardless of whether the cause of the problem originates on public or private property. Additionally, storm drain agencies and other applicable utilities will be notified of the spill. As residents or businesses in the immediate vicinity of the spill are to be informed of the cause of the problem and the remedial action taken. Written procedures are provided for assessing the spill, notifying supervisors, documenting the spill, estimating the volume of the spill, sampling, and laboratory analysis, posting warning signs, and following up. The City shall conduct a post-spill assessment to determine the spill response activities progress during the spill and cleanup.

All construction contractors working on the City’s sewer system are required to have Department of Public Works approved sewage flow bypass system and Emergency Response Plan in place prior to start of construction. Contractors are instructed to take City of Manhattan Beach SSMP

39 immediate action to stop any overflow and to contact City personnel immediately.

The City will annually review and assess the effectiveness of the Response Plan and update as needed.

6.4 Notification to Regulatory Agencies

The City’s Sanitary Sewer Overflow Response Plan outlines notification steps and includes a comprehensive contact and notification list. Notification depends on the severity and potential impact of the overflow. All sewer overflows that enter the waters of the state, such as the ocean, must be reported immediately – within 15 minutes of the knowledge of an overflow event, and/or when the Utilities Division’s personnel determine that an overflow could potentially reach the waters of the State based on their knowledge of the sewer and storm drain infrastructure. Within two hours of becoming aware of any Category 1 SSO greater than or equal to 1,000 gallons discharged to surface water or spilled in a location where it probably will be discharged to surface water, notify CalOES and obtain a notification control number by calling at (800) 852-7550

The notification lists are updated to keep officials’ names and positions current.

Construction contractors are required to take immediate measures to mitigate, and report overflows as soon as they are discovered. The Department of Public Works inspectors report construction -related overflows to the Utilities Division and document the time, location, cause, estimated quantity, and any impact of the overflow, and take mitigation measures as needed.

6.5 Procedure to ensure that staff and contractors are aware of and are appropriately trained to follow Emergency Response Plan

All Utilities Division personnel have participated in a workshop on the City’s Standard Operating Procedures (SOP) for the Sanitary Sewer System. The SOP is an active element of the City’s Emergency Operations Center training program. All wastewater operation and maintenance staff are trained on emergency response procedures once a year, city-wide. New employees receive this training as part of their orientation and this training is reinforced during tailgate training sessions. Public Works Inspectors are also trained in emergency response procedures. The City emphasizes its goal to have no construction-related overflows during pre -bid and pre-construction meetings. Presently, the City is in process of training personnel.

Construction contractors are required to submit and obtain approval of all flow bypasses and emergency response plans prior to the start of construction.

6.6 Procedures to address Emergency Operations such as traffic and crowd control and other necessary response activities

Public health and safety are of paramount importance when a sewer system spill occurs.

Accordingly, City personnel are trained to utilize the Work Area Control Handbook in traffic and crowd control. The control systems and signage serve to provide safe and effective City of Manhattan Beach SSMP

40 work areas, and to warn, control, protect and facilitate vehicular and pedestrian traffic. The City has implemented sewer system spill response and reporting procedures that include timely reporting to regulatory agencies, tables for estimating spill volume, and follow -up CCTV inspection to accurately determine cause and prevention methods. Adequate staff is placed on standby status to supplement existing staff as needed or respond to an emergency after hours.

The City maintains a list of pre -qualified on -call contractors who provide specific equipment, materials, and crews to the City in emergency operations. The City’s Police Department, Fire Department, and Public Works Department can be utilized to assist in emergency situations.

6.7 Program to Eliminate or Minimize the Discharge of Spills into Waters of the United States

The City seeks to protect public health & safety and the environment through the implementation of all Federal and State laws, standards, and orders applicable to untreated wastewater. Through a comprehensive and systematic program of cleaning, condition assessment, repair, and upgrade of its sewer system, the City has minimized all reasonable risks associated with the accidental discharge of sewage into the ocean. When a spill occurs, the highest priorities are to contain the spill and minimize, if not prevent, the spill discharge into the storm drain system, and to minimize or eliminate exposure to the public and impact on public health. The Ci ty’s Sanitary Sewer Spill Response Plan provides guidance to the crews in order to accomplish this objective. A comprehensive investigation is performed for each spill event to diagnose cause and take remedial measures to prevent and mitigate similar future events. Reducing response time would significantly limit the amount of spills that reach the Waters of the United States.

City of Manhattan Beach SSMP

41 Chapter 7 Sewer Pipe Blockage Control Program

The City’s Manhattan Beach Municipal Code Title 5, Sanitation and Health, Chapter 5.38- Fats, Oils And Grease Management And Discharge Control facilitates the maximum beneficial public use of the City's sanitary sewer collection system while preventing blockages of sewer lines resulting from discharges of FOG into the sewer system, and specifying appropriate FOG discharge requirements for Food Se rvice Establishments (FSEs) to comply with the SSMP requirements. This section fulfills the requirement of SWRCB SSMP Element 7 – FOG Control Program.

7.1 Regulatory Requirements

According to State Water Resources Control Board Order No. WQ 2022-0103-DWQ the enrollee shall evaluate its service area to determine whether a FOG control program is needed. If an Enrollee determines that a FOG program is not needed, the Enrollee must provide justification for why it is not needed. If FOG is found to be a problem, the Enrollee must prepare and implement a FOG source control program to reduce the amount of these substances discharged to the sanitary sewer system. This plan shall include the following as appropriate:

a. An implementation plan and schedule for a public education outreach program that promotes proper disposal of pipe-blocking substances ;
b. A plan and schedule for the disposal of pipe-blocking substances generated within the sanitary sewer system service area. 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.
c. The legal authority to prohibit discharges to the system and identify measures to prevent spills and blockages;
d. Requirements to install grease removal devices (such as traps or interceptors) design standards for the removal devices, maintenance requirements, BMP requirements, record keeping and reporting requirements.
e. Authority to inspect grease producing facilities, enforcement authorities, and whether the Enrollee has sufficient staff to inspect and enforce the FOG ordinance. f. An identification of sanitary sewer system sections subject to FOG blockages and establish a cleaning maintenance schedule for each section; and g. Implementation of source control measures, for all sources of FOG reaching the sanitary sewer system, for each section identified in (f) above.

7.2 Implementation Plan and Schedule for Public Outreach

The City of Manhattan Beach public education and outreach program is an ongoing effort that includes topics such as proper FOG management disposal procedures, as well as a general overview of the FOG Ordinance. Four outreach FOG workshops were provided to FSEs. Educational brochures and posters describing the FOG (Sewer Pipe Blockage ) Control Program and Kitchen Best Management Practices are distributed to FSEs in English and Spanish. The City also maintains an up-to-date website, which serves as an additional source of information to the food service industry and the community at large.

City of Manhattan Beach SSMP

42 The FOG Ordinance, FOG Source Control Manual, and general information about eliminating FOG discharges into the sewer system are among the information items provided on the website.

7.3 Plan and Schedule for Disposal of FOG Generated within the System Service Area

The City does not own or operate any FOG disposal facilities, and the City does not allow FOG waste haulers to discharge waste FOG into the sewer system either. However, the Los Angeles County Sanitation District accepts FOG from its member agency service areas, of which the City of Manhattan Beach is a part, at its Joint Water Pollution Control Plant in the City of Carson.

7.4 Legal Authority to Prohibit Discharges to the System and Identify Measures to Prevent Spills and Blockages Caused by FOG.

The City of Manhattan Beach implements FOG discharge prohibitions, which are set forth in the Manhattan Beach Municipal Code – Title 5, Sanitation and Health, Chapter 5.38 – Fats, Oils and Grease Management And Discharge Control. The prohibition section of the Manhattan Beach municipal code that supports this requirement is included in Appendix 2 – Code of Ordinance, Title 5 – Sanitation and Health, Chapter 5.38 – Sewers, Sewage Disposal – City Sewage System and identified in Table 3 of Legal Authority Checklist.

7.5 Requirements to Install Grease Removal Devices, Design Standards, Maintenance BMP’s, Record Keeping and Reporting

The City of Manhattan Beach implements requirements for grease removal devices in Chapter 5.38 – Fats, Oils and Grease Management And Discharge Control. The grease removal devices must be cleaned, maintained and operational in order to minimize FOG discharges into the sewer system. The sections of the Manhattan Beach municipal code that support this requirement are included in Appendix 2 – Code of Ordinance, Title 5 – Sanitation and Health, Chapter 5.38 – Sewers, Sewage Disposal – City Sewage System and identified in Table 3 Legal Authority Checklist.

7.6 Authority for Inspection of Grease Producing Facilities, to Enforcement, and Evidence of Adequate Staffing to Inspect and Enforce the FOG Ordinance

The City of Manhattan Beach implements inspection requirements for grease producing facilities in Chapter 5.38 – Fats, Oils and Grease Management and Discharge Control.

These regulations ensure the sewer facilities are protected and are able to operate with the highest degree of efficiency, as well as protect the public health and environment. The Director has authority to inspect and sample wastewater discharges of any FSE to ensure compliance. The City may utilize one or a combination of enforcement. The sections of the Manhattan Beach municipal code that support this requirement are included in Appendix 2 – Code of Ordinance, Title 5 – Sanitation and Health, Chapter 5.38 – Sewers, Sewage Disposal – City Sewage System and identified in Table 3 Legal Authority Checklist.

See Appendix F for FOG Facilities
City of Manhattan Beach SSMP

43 7.7 Identification and Scheduling for Maintenance of Sewer Sections Prone to FOG Blockages

Spills caused by blockages from FOG are monitored for location and required cleaning frequency. All blockages are plotted on a GIS overlay map. Locations with a high number of sewers prone to FOG accumulation or blockages are given high priority and cleaned more frequently in an effort to prevent FOG –related spills. All reaches, including “non - problem” sewers, are included in a routine preventive maintenance cleaning schedule.

Scheduled and completed tasks are catalogued and tracked by work orders. The maintenance program includes preventive, proactive, predictive, and cor rective maintenance, maintenance engineering, and quality control.

7.8 Development and Implementation of Source Control Measures for Sewer Sections Prone to FOG Blockages

The City’s FOG Ordinance requires FSEs to have an industrial wastewater permit, comply with source control measures for all sources of grease, implement Best Management Practices, install grease interceptors as applicable, and are subject to annual inspections to verify continuous compliance.

The FOG Ordinance provides the City with the legal authority to inspect FSE premises and monitor the implementation of Best Management Practices. As part of routine inspection activities, the City’s contracted inspector determines permit requirements and verifies observance of FOG Ordinance provisions. Additionally, information and training materials such as multi -language Best Management Practices posters, an ordinance summary, and lists of licensed grease waste haulers are provided to help FSEs comply with the FOG Ordinance.

Installation of grease interceptors is required at all FSEs that have the potential to generate FOG, unless a Conditional Waiver is granted. In the event an industrial discharger fails to comply with the requirements of the FOG Control Ordinance, Director of Public Works takes immediate enforcement action by applying one or more sections of the Ordinance included in Appendix 2 – Code of Ordinance, Title 5 – Sanitation and Health, Chapter 5.38 – Sewers, Sewage Disposal – City Sewage System and identified in Table 3 Legal Authority Checklist.

7.9 Monitoring and Reporting Plan Requirements

The September 2013 MRP did not change any of the requirements of the previously adopted SSS WDR for this element.

7.10 References

City of Manhattan Beach Municipal Code, Title 5, Sanitation and Health – Chapter 38 https://www.municode.com/library/ca/manhattan_beach/codes/code_of_ordinances?no deId=TIT5SAHE_CH5.38FAOIGRMADICO

City of Manhattan Beach SSMP

44 Chapter 8 System Evaluation and Capacity Assurance and Capital Improvements

This chapter of the SSMP discusses the capital improvement plan along with evaluations, design criteria, and analysis of the sewer system elements to comply with the SSMP requirements. This section fulfills the requirement of SWRCB SSMP Element 8 – System Evaluation and Capacity Assurance and Capital Improvements.

8.1 Regulatory Requirements

According to State Water Resources Control Board Order No. WQ 2022-0103-DWQ the enrollee shall prepare and implement the plan to 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. a) System Evaluation and Condition Assessment: The Plan must include procedures and activities for:
• Evaluate the sanitary sewer system assets utilizing the best practices and technologies available;
• Identify and justify the amount (percentage) of its system for its condition to be assessed each year;
• Prioritize the condition assessment of system areas that:
o Hold a high level of environmental consequences if vulnerable to collapse, failure, blockage, capacity issues, or other system deficiencies;
o Are located in or within the vicinity of surface waters, steep terrain, high groundwater elevations, and environmentally sensitive areas; o Are within the vicinity of a receiving water with a bacterial -related impairment on the most current Clean Water Act section 303(d) List; • Assess the system conditions using visual observations, video surveillance and/or other comparable system inspection methods;
• Utilize observations/evidence of system conditions that may contribute to exiting of sewage from the system which can reasonably be expected to discharge into a water of the State;
• Maintain documents and recordkeeping of system evaluation and condition assessment inspections and activities; and
• 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.
b) Capacity Assessment and Design Criteria: The Plan must include procedures to identify system components that are experiencing or contributing to spills caused by hydraulic deficiency and/or limited capacity, including procedures to identify the appropriate hydraulic capacity of key system elements for:
• Dry-weather peak flow conditions that cause or contributes to spill events; • The appropriate design storm(s) or wet weather events that causes or contributes to spill events;
• The capacity of key system components; and
• Identify the major sources that contribute to the peak flows associated with sewer City of Manhattan Beach SSMP

45 spills.
• The capacity assessment must consider:
• Data from existing system condition assessments, system inspections, system audits, spill history, and other available information; • Capacity of flood-prone systems subject to increased infiltration and inflow, under normal local and regional storm conditions;
• Capacity of systems subject to increased infiltration and inflow due to larger and/or higher-intensity storm events as a result of climate change; • Increases of erosive forces in canyons and streams near underground and aboveground system components due to larger and/or higher -intensity storm events;
• Capacity of major system elements to accommodate dry weather peak flow conditions, and updated design storm and wet weather events; and • Necessary redundancy in pumping and storage capacities.

c) Prioritization of Corrective Action: The findings of the condition assessments and capacity assessments must be used to prioritize corrective actions. Prioritization must consider the severity of the consequences of potential spills. d) ,Capital Improvement Plan: The capital improvement plan must include the following items:
• Project schedules including completion dates for all portions of the capital improvement program;
• Internal and external project funding sources for each project; and • 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.

8.2 System Evaluation and Condition Assessment

The City’s goal is to perform CCTV on 20% of the system each year, thereby completing the entire City assessment within five (5) years. To perform a detailed evaluation of the capacity of the sewer collection system, it is convenient to create a mathematical model that is capable of simulating the operating characteristics of the system. The simulations for this study were performed on a M icrosoft Windows based computer utilizing software designed for the analysis of sewer systems. The software selected for this study is InfoSewer. It is an ArcGIS-based computer program with the ability to perform steady state analyses of the flows in the sewer system. InfoSewer offers direct ArcGIS integration , allowing GIS analysis and hydraulic modeling to exist in a single environment. The program also manages and maintains the database that stores the sewer analysis input and output results. Manning’s Equation is used for depth of flow calculations in the gravity sewer pipes. Technical information related to Section 7.2 is included in Appendix 6 – Wastewater Master Plan – Section 7, Hydraulic Model & Collection System Capacity Analysis. The City is assessing these issues to identify system assets that are vulnerable to both direct and indirect impacts of climate change. This includes, but is not limited to:
rising sea levels; flooding and erosion caused by increased storm volume, frequency, and intensity; wildfires; and more frequent power disruptions.

The condition assessment was completed from 2008 to 201 2 to assess the adequacy of City of Manhattan Beach SSMP

46 the existing sewer system. The details for the sanitary sewer system are found in Appendix 8 – Wastewater Master Plan – Section 9, Operation and Maintenance.

8.3 Capacity Assessment and Design Criteria

Establishing performance standards is an important part of evaluating a wastewater collection system, as it forms the basis for system analysis and system improvement recommendations. These standards include methodology for estimating wastewater design flo ws and minimum design standards for the collection system pipes pump stations, and force mains.

Average wastewater flows can be reasonably estimated from land use and their corresponding unit flow factors. The results are then compared to measured flows.

Peaking factors are needed for estimating peak dry weather and perk wet weather flows.

Peak wet weather flows include an allowance for inflow and infiltration. As, the storm(s) or wet weather events that cause or contribute to spill events.

The Capacity Assessments will consider the following to ensure the current design and future comply to prevent spills. Evaluate the existing data from system assessments, inspections, and audits, as well as spill history. The capacity of flood-prone systems to manage increased infiltration and inflow during both normal and extreme storm events attributed to climate change. Additionally, it addresses the erosive forces affecting underground and above-ground components near canyons and streams during high- intensity storms. The assessment to also covers the capacity of major system elements to handle peak dry weather flows and updated design storm conditions. Lastly, the necessity of maintaining redundancy in pumping and storage capacities to ensure system resilience.

Collection system design standards include minimum pipe size, minimum flow velocity and depth of flow to pipe diameter ration. Pump station criteria include the capacity and number of pumps, wet wells and force main sizes, redundancy, emergency power, remote monitoring capabilities, as well as safety and regulatory agency requirements. Finally, facility useful lives are needed for adequately scheduling replacement of the aging infrastructure.

A comprehensive set of criteria for planning and design of new sewers, pump stations, force mains, and appurtenances, and for the rehabilitation of existing sewers are used to address:

• Flow Monitoring
• Unit Flow Factors
• Peaking Factors – Dry Weather and Wet Weather
• Inflow and Infiltration
• Sewer Design Criteria
• Pump Station Design Criteria – wet wells, pumps, dry well, force mains, SCADA • Service Life of Pipe and Lift Station Equipment
• Sewer System Operation and Maintenance

City of Manhattan Beach SSMP

47 Technical information related to Section 8.2 is included in Appendices 5, 6, & 7.

8.4 Prioritization of Corrective Action
The results and findings of the system evaluation and capacity assessments will be used to implement corrective actions to improve the efficiency of the sanitary sewer system and prevent future spills. This information will also inform the CIP schedule and applicable projects. The City will prioritize the corrective actions based upon the severity of the consequence of the potential spill.

8.5 Capital Improvement Plan

The primary goal of the Capital Improvement Program (CIP) is to provide the City of Manhattan Beach with a long-range planning tool for implementing its sewer infrastructure improvements in an orderly manner and a basis for financing of these improvements. To accomplish this goal, the program is phased based upon the implementation cost of the facilities, the quantity of work the City can reasonably administer each year, and the funds available for these projects.

Capital Improvement Projects Priorities
The capital improvement projects were selected primarily with consideration of the health and safety of the public and protection of the environment by minimizing the possibility of overflows. The projects that will eliminate the capacity deficiencies in the gravity collection system are prioritized based upon the hydraulic analyses conducted. As the City completes CCTV inspection of the system, severe and major defects identified should be incorporated into the CIP and addressed. When the CCTV inspection is completed and a full condition assessment has been conducted, the capital improvement project priorities should be reevaluated.

Collection System Capacity Improvement Projects
The collection system capacity improvement projects include the areas identified with a capacity deficiency in the hydraulic model when pump capacities were implemented. It is recommended that the identified locations be flow monitored to verify the d/D ra tios prior to implementing any replacement projects. Operations staff has not indicated that these areas are a problem. Therefore, until the deficiencies are verified in the field, these projects are considered low in priority. Details of the project locat ions are presented in Appendix 6 - Wastewater Master Plan – Section 7, Hydraulic Model & Collection System Capacity Analysis.

Collection System Condition Improvement Projects
The condition improvement projects are prioritized solely on the condition of the pipe as determined from reviews of the CCTV recordings. The condition deficiencies with critical structural damage and severe obstructions were given the highest priority. Se wer pipes with conditions categorized as “Severe” or “Major” and manholes categorized as in poor condition are included in the recommended improvements. Details of the projects are presented Appendix 7 – Wastewater Master Plan – Section 8, Condition Assessment.

City of Manhattan Beach SSMP

48 The planning level recommendations are based upon the ranking and pipe defects from the CCTV inspection reports, and reviews of recordings. It may be possible to reline, repair or perform root treatment on some of the existing gravity pipes, in lieu of rep lacing them.

Actual improvements should be designed based upon further detailed reviews of each recording, taking into consideration other factors such as location, age, capacity of the pipe, existing utilities, and concurrent infrastructure construction p rojects. The useful life gained from replacing the deficient facilities will be longer than repairs and relining projects. Root treatment is usually a temporary solution. Unless the source is removed, it is likely that the roots will get thicker as time pa sses and the root intrusion will continue until the pipe is replaced.

Pump Station Improvements
The recommended pump station capital improvement projects have been based upon condition assessment of each facility, capacity analysis, and conformance with the adopted criteria. The implementation priorities should be based upon the likelihood of a failure that may result in a spill, the volume of spill, and its impact on the public and the environment. The condition assessment and analysis results are described in Appendix 5 Wastewater Master Plan – Section 6, Existing Pump Stations.

Capital Improvement Program
The Capital Improvement Program is developed based upon the results of the hydraulic analyses and the established priorities. The recommended improvement project locations and cost estimates are included in Appendix 9 – Wastewater Master Plan – Section 10, Capital Improvement Program. Replacement costs are generally more conservative and will therefore allow the City more flexibility for each project. Preliminary design studies should be conducted utilizing detailed utility information to identify and evaluate project alternatives such as pa rallel pipes and/or diversions prior to final design. When sewers are replaced, they should be relocated into the walkways or right-of-ways as much as possible if they are currently in a location that cannot be easily accessed.

The City of Manhattan Beach is largely occupied and there are many existing utilities to consider. Therefore, the costs of replacing sewer facilities will be generally higher than in an area that is undeveloped. The recommended projects have been based upon the best information currently available. It should be updated as new information becomes available from sources such as CCTV inspections and from maintenance crew observations. The project priorities may be revised to correspond to changed conditions, such as impending facility failures, or to take advantage of concurrent construction such as street paving projects or adjacent infrastructure work. Some of the projects recommended are small and it may not be feasible to implement them as a single project.

Therefore, several projects should be combined and bid as a package. Some of the projects may be broken down into smaller components to fit the City’s budgetary and other obligations. Related information is included in Appendix 9 - Wastewater Master Plan – Section 10, Capital Improvement Program & 11 – FY 2026 – 2030 Capital Improvement Plan.

8.6 Completion Schedule

The City’s rolling Five -Year Capital Improvement Program is reviewed and updated City of Manhattan Beach SSMP

49 annually and lists all capital improvement projects scheduled for implementation during the following 5 years. Inclusion in the CIP is determined by a risk -based prioritization system.

Due to the CIP deficiency violation from the SWRCB 2015 inspections, the priority strategy for specific projects was developed and executed through the rolling 5 -year CIP. The strategy is based on the Wastewater Master Plan recommendations and involved construction of a combination of projects, all of which included Grade 5 Spot Repairs, Grade 5 Line Replacements and a sequenced replacement of six Sewer Lift Stations. All of the priority projects identified in the Appendix 9 - Wastewater Master Plan – Section 10, Capital Improvement from 2010 – 2025.

City of Manhattan Beach SSMP

50 The most recent adoption of the 2026-2030 Capital Implement Plan includes carryover and new projects. These include:

• Annual Rehabilitation of Gravity Sewer Mains
• Voorhees Lift Station Upgrade, Emergency Storage, and Force Main Replacement • Pacific Lift Station Conversion to Gravity Line
• Poinsettia Sewage Lift Station Replacement and Force Main Replacement • Bell Lift Station Upgrade, Emergency Storage, and Force Main Replacement • Meadows Lift Station Upgrade, Emergency Storage, and Force Main Replacement • Wastewater Masterplan Update
• Palm Lift Station Upgrade, Emergency Storage, and Force Main Replacement

The City of Manhattan Beach Capital Improvement Plan (CIP) for wastewater projects is included in Appendix 11 – FY 2026 – 2030 Capital Improvement Plan.

8.7 References

City of Manhattan Beach Wastewater Master Plan (Sections 6, 7, 8, & 10) https://www.manhattanbeach.gov/departments/public-works/utilities-division/master- plans
City of Manhattan Beach 2026-2030 Capital Improvement Plan (Appendix 11) https://city-manhattan-beach-ca-budget-
book.cleargov.com/16787/introduction/transmittal-letter

City of Manhattan Beach SSMP

51 Chapter 9 Monitoring, Measurement and Program Modifications

This chapter of the SSMP discusses the monitoring, measurement, and program modifications to comply with the SSMP requirements. This section fulfills the requirement of SWRCB SSMP Element 9 – Monitoring, Measurement, and Program Modifications.

9.1 Regulatory Requirements

According to State Water Resources Control Board Order No. WQ 2022-0103-DWQ, the enrollee shall:

a. Maintain relevant information , including audit findings, to establish and prioritize appropriate Plan activities;
b. Monitor the implementation and measure the effectiveness of each Plan Element; c. Assess the success of the preventative operation and maintenance activities; d. Update program procedures and activities , as appropriate, based on results of monitoring or performance evaluations; and
e. Identify and illustrate spill trends, including: spill frequency, locations, and estimated volume.

9.2 Information Maintenance

The City has multiple ongoing programs that support the collection and management of data and information essential to successful implementation of its Sewer System Management Plan (SSMP). Major SSMP activities are established and prioritized as follows:

Information Management Systems
The City’s information management system is an integral and essential element of the operation and maintenance program. All attributes of each sewer segment are included in a comprehensive inventory database. Information regarding all maintenance activities, sewer condition, spills, and odor complaints is entered into the database. This information is routinely evaluated to document maintenance needs, identify problem locations, and assist in analysis of spill events and odor complaints. This data is availa ble to quickly identify and visualize problem areas, communicate actual condition and maintenance needs to operation and maintenance staff, prioritizes cleaning and root removal activities, and provide for corrective measures. CCTV records housed in the GIS database are a primary tool used to prioritize and schedule sewer assessments and maintenance activities in their preventive maintenance program.

Sewer Condition Assessment
To assess the condition of CCTV inspected sewers, the City uses the National Association of Sewer Service Company (NASSCO) Pipeline Assessment and Certification Program (PACP) coding procedures, which utilized a five -category rating system based on the types and severity of defects. They range from 1 (excellent) to 5 (Immediate Attention) condition. The condition ratings trigger follow -up actions that could include increased monitoring and maintenance to keep a problem sewer fully operational while a capita l City of Manhattan Beach SSMP

52 improvement project is being developed and implemented to provide long -term solution.

Rehabilitation or replacement projects are developed and scheduled for implementation on a prioritized basis with other identified needs. Category 1 and 2 sewers are in excellent to good condition and are scheduled for continued inspections and monitoring on 10-year cycles. Category 3 condition sewers are considered to be in fair condition and are scheduled for follow -up inspections once every five years. Category 4 condit ion sewers are considered in poor condition are closely monitored and are included in the Wastewater Capital Improvement Program (WCIP) for replacement or rehabilitation within five years.

Increased preventive measures are taken for Category D condition se wers, as appropriate, to avoid emergency situations and follow -up inspections are conducted annually. Category 5 condition sewers are considered to be in need of immediate action.

These are sewers where a pipe failure has already occurred or there is a ful l flow obstruction. Condition E sewers are immediately repaired and restored to condition A or B sewers.

Operation and Maintenance Program
The City has an extensive proactive and preventive maintenance program for its collection system. Maintenance is performed by five Wastewater Division staff. Preventive maintenance is focused on critical and problematic areas. The critical sewers are identified, prioritized and scheduled for maintenance based on a comprehensive review of maintenance history and system characteristics of all sewers in the City including overflows, blockages, excessive maintenance, age, pipe material, and condition assessment records.

In an effort to prevent s pills, flow monitoring and CCTV records are reviewed to identify potential weaknesses in the system. Sewers that are in poor condition are identified through this process. These assessment activities may trigger further reviews to determine cause and/or may trigger immediate or accelerated corrective actions.

Maintenance priorities are set based on the relative severity of the problem. The City has implemented the proactive maintenance program where all sewer lines are jetted once per year and “hot spots” are jetted once per quarter. The City’s lift stations are inspected, and wet wells are cleaned weekly. Hot Spots Cleaning included in Appendix I and Appendix 8 – Wastewater Master Plan – Section 9, Operation and Maintenance.

Spill Emergency Response
The Utilities Manager and staff meet quarterly to review emergency response actions and collaborate on methods and procedures that will improve performance. Aggressive performance standards for timely response to sewer overflows are established and communicated to the spill response team. Response protocol is reviewed periodically and updated as needed based on a review of established and actual response times.

9.3 SSMP Implementation and Effectiveness Monitoring

The City’s SSMP is a well-integrated plan with each element designed to complement and support the other elements. Each year as a part of the City’s rolling Five -Year Capital Improvement Program, the SSMP goals are set, the deliverables required to meet goals are defined and prioritized, lead and support staff and resources are assigned, and progress is measured and reported to ensure the City is meeting or exceeding goals and City of Manhattan Beach SSMP

53 achieving full compliance with the SSMP requirements. Overall , SSMP performance is evaluated and reported to management quarterly, and annually following the end of each fiscal year. Any plan updates necessary to enhance the SSMP performance are identified and become a part of the following year’s rolling Five-Year Capital Improvement Program.

9.4 Assessment of Preventative Operation and Maintenance Program

The City uses a variety of metrics to measure the effectiveness of different SSMP components. Productivity standards for the Operation and Maintenance Program, for example, use footage/mileage goals for Cleaning and CCTV activities. Data is recorded for each crew daily. Productivity can be assessed for time periods ranging from an hour to a year, and for individuals or for the division. Data recorded in the field is compiled into an Access database and extracted into weekly, monthly, and yearly reports. S pill data is an important measure of sewer system performance. The frequency, location, and volume of spills is often used to determine how resources will be allocated. For example, Smart Cover® manhole lids have been strategically placed in areas of the City more prone to spills. Data will also be used to recalibrate the frequency of cleaning activity for problem areas, or sewer "hot spots." Sewer system management is regularly evaluated for effectiveness and when needed, protocols are updated to produce more favorable outcomes. The City utilizes community outreach via the City website. Additionally, residents are notified prior to a project starting.

9.5 Program Modifications/Updates

This section lists some examples of ongoing monitoring and review processes that are part of the City’s system performance evaluation and continual improvement.

Annual Review of Preventive Maintenance
On an annual basis a comprehensive review of the maintenance program is conducted.

The critical sewers are identified, prioritized and scheduled for maintenance based on a comprehensive review of maintenance history and system characteristics of all sewers in the City including overflows, blockages, excessive maintenance, age, pipe material and condition assessment records.

In an effort to prevent overflows, CCTV records are reviewed to identify potential weaknesses in the system. Sewer locations that are in poor condition are identified through this process. These assessment activities may trigger further reviews to determine cause and/or may trigger immediate or accelerated corrective actions.

Maintenance priorities are set based on the relative severity of the problem.

Sewer Pipe Blockage Control Program
The City utilizes a robust program that includes annual Fats, Oils and Grease restaurant inspections, and ongoing user education and involvement. As a result, amendments and improvements are made to the program with active support of the FSEs. The program goal is to eliminate all preventable sewer spills caused by grease.

City of Manhattan Beach SSMP

54 Root Control Program
Roots are the main issue the City faces, since the sandy soil conditions allow roots to grow quickly in search of a water source. The City performs routine mechanical root removal as an extensive cleaning schedule especially in areas of known root intrusion. This schedule has prevented major root issues such as veil -type and root balls originating from private laterals. A recent CUES camera has been purchased by the City to investigate locations of hotspot causes and help maintenance staff determine the spe cific locations that need root control.

Construction
To avoid construction related sewer overflows to comply with the City’s “zero [construction] spill” policy requires that a spill prevention and response plan be developed and implemented for all sewer construction projects. The City‘s zero spill policy is documented in the “Standard Specifications for Public Works Construction (Green Book)”.

9.6 Identification and Illustration of Spill Trends

Spill trends are identified and tracked through a state-of-the art GIS tracking system. When complaints are called in, they are uploaded to a master database and plotted on a City - wide map. The City’s information management system is an integral part of the operation and maintenance program. All attributes of each sewer pipe gravity and pressure segment are included in a comprehensive inventory database. Information regarding each new overflow and odor complaint is entered into a maintenance management data base. This information is evaluated to document locations, causes, and frequency of overflows and odors. This data is overlain on a GIS base map of the sewer system to quickly identify and visualize problem areas; communicate conditions and needs to City p olicy makers and management; and prioritize maintenance activities, urgent and emergency repairs, and mid- and long-term solutions.

9.7 Monitoring and Reporting Plan Requirements

The September 2013 MRP added an additional requirement related to the program modifications issue. The 2013 MRP states: “Records documenting all changes made to the SSMP since its last certification indicating when a subsection(s) of the SSMP was changed and/or updated and who authorized the change or update. These records shall be attached to the SSMP.”

These changes may relate to the results of the system’s performance evaluation. Other changes may be enacted by an Enrollee after an SSMP audit is performed. The changes are to be documented, whenever they are made, as described in the MRP. An Enrollee may easily keep these actions and changes documented through the use of a simple “Change Log” that may provide a brief description and date of any SSMP changes, as an appendix to the SSMP. A SSMP S ample Change Log is attached in Appendix D for convenience.

City of Manhattan Beach SSMP

55 Chapter 10 SSMP Program Audits

This section fulfills the requirement of SWRCB SSMP Element 10 – SSMP Program Internal Audits.

10.1 Regulatory Requirements

According to State Water Resources Control Board Order No. WQ 2022-0103-DWQ, the enrollee shall conduct periodic internal audits, appropriate to the size of the system and the number of spills. At a minimum, these audits must occur every three years and a report must be prepared and kept on file. This audit shall focus on evaluating the effectiveness of the SSMP and the Enrollee’s compliance with the SSMP requirements identified in this subsection, including identification of any deficiencies i n the SSMP an d steps to correct them.

10.2 SSMP Program Audits

Audit and benchmarking programs are among primary City strategies in accomplishing its mission to protect public health and the environment and meeting goals. As a part of the City’s continuing performance measurement, the City’s SSMP undergoes ongoing reviews at all levels of the organization having authorities and responsibilities in the SSMP implementation shown in Chapter 2 Organization of this SSMP. These reviews culminate in internal (self) audits of the SSMP that result in every three-year internal audit reports.

As a part of these audits, all parts and sub-parts of the SSMP are reviewed critically with regards to their ability to effectively and efficiently meet the State General Waste Discharge Requirements (GWDR) and comply with City policies.

Each year as a part of City’s Wastewater Division Five-Year Capital Improvement Plan:

• SSMP goals are set
• Deliverables that are required to meet goals defined and prioritized • Lead and support staff and resources necessary to complete deliverables assigned • Progress measured and reported on an ongoing basis to ensure full and timely completion of deliverables.

Any gaps between targeted results and actual progress are identified or anticipated and mitigation measures developed and implemented to close or avoid any performance gaps.

The overall SSMP performance is evaluated and reported to management annually following the end of each fiscal year. Any plan updates necessary to enhance the SSMP performance are identified and included as a part of the following year’s City’s Five -Year Capital Improvement Plan.

See Appendix E for self-audit report dated February 4, 2025.

City of Manhattan Beach SSMP

56 10.3 Monitoring and Recording

The 2022 Order of the Attachment E2 – Summary of Notification, Monitoring and Reporting Requirements includes the current monitoring and reporting program regulations.
.

10.4 Self-Monitoring and Plan Modification

Performance measures and benchmarks are established through ongoing performance review. Experienced personnel audit the SSMP at least once every t hree years by evaluating the effectiveness of each SSMP element and making recommendations for improvements and updates as appropriate. The SSMP is updated by incorporating adopted recommendations. Audit reports and related materials are maintained in a comprehensive hard copy and electronic document tracking and management system.

The following are examples of ongoing self-monitoring and plan modification:

• Spill Emergency Response
The Utilities Manager and Wastewater Division Staff meet quarterly to review emergency response actions and collaborate on methods and procedures that will improve performance. Performance standards are developed, published, and communicated to relevant staff. Actual response times are compared to standards; changes are made and documented and staff retrained as appropriate.

• Hydraulic Models
The City of Manhattan Beach Wastewater Master Plan included hydraulic modeling and collection system capacity analysis to model and assesses the hydraulic performance of its network of pipes, flow splits, and pumping plants, and to predict future flow based on growth projections.

• Structural Condition Assessment
Fifty percent of the City’s sewer lines, and manholes have been inspected by closed circuit television; the remaining fifty percent will be inspected over the next five years. Based on these inspections, the condition of each sewer line and manhole have been assessed and rated in a five -category condition ranking. The ranking system is used to prioritize and schedule future inspections and rehabilitation or replacement planning studies. Changes are made to work priorities and project delivery schedules base d on the findings of field investigations and criticality of system needs.

• Maintenance Management Approaches
Priority is given to sewers within sewer sheds that return the most benefit for the maintenance effort. Data are accumulated on maintenance hot spots and displayed on GIS maps to display locations requiring additional attention. This information forms the basis for prioritizing cleaning, inspection, and rehabilitation. All maintenance holes are physically inspected annually, all sewers cleaned annually, and operationally challenged sewers are cleaned more often as needed. This ongoing monitoring and adjustm ent City of Manhattan Beach SSMP

57 process will work to optimize staff efficiency and system performance. Effectiveness of root control is also monitored and changes to cleaning schedules made as needed.

• Sewer Design Criteria and Standard Plans and Specifications The City’s Public Works Department, Engineering Division, oversees design, construction, start-up and optimization of public works sewer system projects. Design standards, specifications and standard details are continuously monitored for currency and effectiveness. Staff input based on field experience is provided and r eviewed systematically. Appropriate changes are incorporated into the City’s standards and work in progress as needed.

• Construction Activities
In another effort to avoid spills, the City developed and implemented a requirement that a spill prevention and response plan has to be developed and implemented for all wastewater construction projects.

City of Manhattan Beach SSMP

58 Chapter 11 Communication Program

This section fulfills the requirement of SWRCB SSMP Element 11 – Communication Program.

11.1 Regulatory Requirements

According to State Water Resources Control Board Order No. WQ 2022-0103-DWQ, the enrollee shall communicate on a regular basis with the public on the development, implementation, and performance of its SSMP. The communication system shall provide the public information about spills and discharges that lead to the closure of public areas or contaminate sources of drinking water , and allow the opportunity for the public to provide input to the Enrollee as the program is developed and implemented. The Enrollee shall also create a plan of communication with systems that are tributary and/or satellite to the Enrollee’s sanitary sewer system for System operation, maintenance, and capital improvement-related activities.

11.2 Public Communication

The City performs community outreach which includes mailing of pamphlets to Food Service Establishments; website SSMP information; handing out materials at community fairs; advisories and press releases; and toll-free help lines. Outreach events are held for the general public and Food Service Establishments to familiarize them with the Fats, Oils, and Grease (FOG) Control Program, now known as the Sewer Pipe Blockage Control Program. Electronic versions of the FOG Ordinance and FOG Source Control Manual are also made available on the City’s website.

The following are examples of the community outreach activities within the City’s SSMP:

• Sewer Pipe Blockage Control Program
The FOG Ordinance and FOG Source Control Manual outreach is geared towards FSEs and businesses. During each FOG inspection laminated posters are presented and inspectors provide a direct, verbal explanation to the establishment's personnel regarding best management practices for FOG. This consistent, on-site engagement is an effective method of reinforcing FOG pollution prevention measures within the food service community

• Private Lateral Sewer Maintenance and Root Control Outreach This outreach is focused in the areas of City designated as “root hot spots” where s pills may occur due to blockages caused by roots. Properties in the “root hot spot” areas are sent pamphlets which contain information regarding causes of root growth in private laterals, prevention methods and proper operation and maintenance for private laterals.

• Capital Improvement Projects (CIPs)
Capital Improvement Projects (CIPs) are listed in the Wastewater Master Plan and are advertised in the community through updates to the City website. Outreach is also conducted by meeting with local businesses and community. These activities ensure that City of Manhattan Beach SSMP

59 the communities are informed about projects in their neighborhoods.

11.3 Monitoring and Reporting Plan Requirements

The 2022 Order of the Attachment E2 – Summary of Notification, Monitoring and Reporting Requirements includes the current monitoring and reporting program regulations.

City of Manhattan Beach SSMP

60 Appendices

City of Manhattan Beach SSMP

61 Appendix A – State Water Resources Control Board Order No. 2022-0103-DWQ Statewide General WDR For Sanitary Sewer Systems

1 STATE WATER RESOURCES CONTROL BOARD
1001 I Street, Sacramento, California 95814
ORDER WQ 2022-0103-DWQ

STATEWIDE WASTE DISCHARGE REQUIREMENTS

GENERAL ORDER FOR SANITARY SEWER SYSTEMS
This Order was adopted by the State Water Resources Control Board on December 6, 2022.

This Order shall become effective 180 days after the Adoption Date of this General Order, on June 5, 2023.

The Enrollee shall comply with the requirements of this Order upon the Effective Date of this General Order.

This General Order does not convey any property rights of any sort or any exclusive privileges.

The requirements prescribed herein do not authorize the commission of any act causing injury to persons or property, protect the Enrollee from liability under federal, state, or local laws, nor create a vested right for the Enrollee to continue the discharge of waste.

CERTIFICATION
I, Jeanine Townsend, Clerk to the Board, do hereby certify that this Order with all attachments is a full, true, and correct copy of the Order adopted by the State Water Board on December 6, 2022.

AYE: Chair E. Joaquin Esquivel
Vice Chair Dorene D’Adamo
Board Member Sean Maguire
Board Member Laurel Firestone
Board Member Nichole Morgan
NAY: None
ABSENT: None
ABSTAIN: None
for
Jeanine Townsend
Clerk to the Board

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER

ORDER 2022-0103-DWQ December 6, 2022
2 Table of Contents

1. Introduction .................................................................................................................... 4

2. Regulatory Coverage and Application Requirements .................................................... 5

2.1. Requirements for Continuation of Existing Regulatory Coverage ....................... 5

2.2. Requirements for New Regulatory Coverage ...................................................... 5

2.3. Regulatory Coverage Transfer ............................................................................ 7

3. Findings ......................................................................................................................... 7

3.1. Legal Authorities ................................................................................................. 7

3.2. General ............................................................................................................. 11

3.3. Water Quality Control Plans, Policies and Resolutions ..................................... 14

3.4. California Environmental Quality Act ................................................................. 16

3.5. State Water Board Funding Assistance for Compliance with Water Board Water Quality Orders ................................................................................................... 16

3.6. Notification to Interested Parties ....................................................................... 17

4. Prohibitions .................................................................................................................. 17

4.1 Discharge of Sewage from a Sanitary Sewer System ....................................... 17

4.2. Discharge of Sewage to Waters of the State..................................................... 17

4.3. Discharge of Sewage Creating a Nuisance ....................................................... 18

5. Specifications ............................................................................................................... 18

5.1. Designation of a Legally Responsible Official ................................................... 18

5.2. Sewer System Management Plan Development and Implementation ............... 18

5.3. Certification of Sewer System Management Plan and Plan Updates ................ 19

5.4. Sewer System Management Plan Audits .......................................................... 19

5.5. Six-Year Sewer System Management Plan Update .......................................... 21

5.6. System Resilience ............................................................................................. 22

5.7. Allocation of Resources .................................................................................... 22

5.8. Designation of Data Submitters ......................................................................... 22

5.9. Reporting Certification ....................................................................................... 22

5.10. System Capacity ............................................................................................... 23

5.11. System Performance Analysis .......................................................................... 23

5.12. Spill Emergency Response Plan and Remedial Actions ................................... 23

5.13. Notification, Monitoring, Reporting and Recordkeeping Requirements ............. 24

5.14. Electronic Sanitary Sewer System Service Area Boundary Map ....................... 26

5.15. Voluntary Reporting of Spills from Privately-Owned Sewer Laterals and/or Private Sanitary Sewer Systems ................................................................................... 26

5.16. Voluntary Notification of Spills from Privately-Owned Laterals and/or Systems to the California Office of Emergency Services ..................................................... 27

5.17. Unintended Failure to Report ............................................................................ 27

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER

ORDER 2022-0103-DWQ December 6, 2022
3 5.18. Duty to Report to Water Boards ........................................................................ 27

5.19. Operation and Maintenance ............................................................................... 27

6. Provisions .................................................................................................................... 27

6.1. Enforcement Provisions .................................................................................... 27

6.2. Other Regional Water Board Orders ................................................................. 30

6.3. Sewer System Management Plan Availability ................................................... 31

6.4. Entry and Inspection ......................................................................................... 31

Table of Attachments
Attachment A – Definitions ..................................................................................................... A-1 Attachment B – Application for Enrollment ............................................................................. B-1 Attachment C - Notice of Termination ..................................................................................... C-1 Attachment D – Sewer System Management Plan – Required Elements .............................. D-1 Attachment E1 – Notification, Monitoring, Reporting and Recordkeeping Requirements ..... E1-1 Attachment E2 – Summary of Notification, Monitoring and Reporting Requirements ........... E2-1 Attachment F – Regional Water Quality Control Board Contact Information .......................... F-1

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER

ORDER 2022-0103-DWQ December 6, 2022
4 1. INTRODUCTION
This General Order regulates sanitary sewer systems designed to convey sewage. For the purpose of this Order, a sanitary sewer system includes, but is not limited to, pipes, valves, pump stations, manholes, siphons, wet wells, diversion structures and/or other pertinent infrastructure, upstream of a wastewater treatment plant headworks. A sanitary sewer system includes:
• Laterals owned and/or operated by the Enrollee;
• Satellite sewer systems; and/or
• Temporary conveyance and storage facilities, including but not limited to temporary piping, vaults, construction trenches, wet wells, impoundments, tanks and diversion structures.

Sewage is untreated or partially treated domestic, municipal, commercial and/or industrial waste (including sewage sludge), and any mixture of these wastes with inflow or infiltration of stormwater or groundwater, conveyed in a sanitary sewer system.

Sewage contains high levels of suspended solids, non-digested organic waste, pathogenic bacteria, viruses, toxic pollutants, nutrients, oxygen-demanding organic compounds, oils, grease, pharmaceuticals, and other harmful pollutants.

For the purpose of this General Order, a spill is a discharge of sewage from any portion of a sanitary sewer system due to a sanitary sewer system overflow, operational failure, and/or infrastructure failure. Sewage and its associated wastewater spilled from a sanitary sewer system may threaten public health, beneficial uses of waters of the State, and the environment.

This General Order serves as statewide waste discharge requirements and supersedes the previous State Water Resources Control Board (State Water Board) Order 2006-0003-DWQ and amendments thereafter. All sections and attachments of this General Order are enforceable by the State Water Board and Regional Water Quality Control Boards (Regional Water Boards). Through this General Order, the State Water Board requires an Enrollee to:
• Comply with federal and state prohibitions of discharge of sewage to waters of the State, including federal waters of the United States;
• Comply with specifications, and notification, monitoring, reporting and recordkeeping requirements in this General Order that implement the federal Clean Water Act, the California Water Code (Water Code), water quality control plans (including Regional Water Board Basin Plans) and policies;
• Proactively operate and maintain resilient sanitary sewer systems to prevent spills; • Eliminate discharges of sewage to waters of the State through effective implementation of a Sewer System Management Plan;
• Monitor, track, and analyze spills for ongoing system-specific performance improvements; and
• Report noncompliance with this General Order per reporting requirements.

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER

ORDER 2022-0103-DWQ December 6, 2022
5 An Enrollee is a public, private, or other non-governmental entity that has obtained approval for regulatory coverage under this General Order, including:
• A state agency, municipality, special district, or other public entity that owns and/or operates one or more sanitary sewer systems:
o greater than one (1) mile in length (each individual sanitary sewer system); o one (1) mile or less in length where the State Water Board or a Regional Water Board requires regulatory coverage under this Order; or • A federal agency, private company, or other non-governmental entity that owns and/or operates a sanitary sewer system of any size where the State Water Board or a Regional Water Board requires regulatory coverage under this Order in response to a history of spills, proximity to surface water, or other factors supporting regulatory coverage.

For the purpose of this Order, a sanitary sewer system includes only systems owned and/or operated by the Enrollee.

2. REGULATORY COVERAGE AND APPLICATION REQUIREMENTS

2.1. Requirements for Continuation of Existing Regulatory Coverage To continue regulatory coverage from previous Order 2006-0003-DWQ under this General Order, within the 60-days-prior-to the Effective Date of this General Order, the Legally Responsible Official of an existing Enrollee shall electronically certify the Continuation of Existing Regulatory Coverage form in the online California Integrated Water Quality System (CIWQS) Sanitary Sewer System Database. The Legally Responsible Official will receive an automated CIWQS-issued Notice of Applicability email, confirming continuation of regulatory coverage under this General Order. All regulatory coverage under previous Order 2006-0003-DWQ will cease on the Effective Date of this Order.

An Enrollee continuing existing regulatory coverage is not required to submit a new application package or pay an application fee for enrollment under this General Order.

The annual fee due date for continued regulatory coverage from previous Order 2006-0003-DWQ to this General Order remains unchanged.

A previous Enrollee of Order 2006-0003-DWQ that fails to certify the Continuation of Existing Regulatory Coverage form in the online CIWQS database by the Effective Date of this Order is considered a New Applicant, and will not have regulatory coverage for its sanitary sewer system(s) until:
• A new application package for system(s) enrollment is submitted per section 2.2 (Requirements for New Regulatory Coverage) below; and
• The new application package is approved per section 2.2.2 (Approval of Application Package (For New Applicants Only)).

2.2. Requirements for New Regulatory Coverage
No later than 60 days prior to commencing and/or assuming operation and maintenance responsibilities of a sanitary sewer system, a duly authorized representative that

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER

ORDER 2022-0103-DWQ December 6, 2022
6 maintains legal authority over the public or private sanitary sewer system is required to enroll under this General Order by submitting a complete application package as specified below and as provided in Attachment B (Application for Enrollment Form) of this General Order.

Unless required by a Regional Water Board, a public agency that owns a combined sewer system subject to the Combined Sewer Overflow Control Policy (33 U.S. Code § 1342(q)), is not required to enroll, under this Order, the portions of its sanitary sewer system(s) that collects combined sanitary wastewater and stormwater.

2.2.1. Application Package Requirements
The Application for Enrollment package for new applicants must include the following items:
• Application for Enrollment Form. The form in Attachment B of this General Order must be completed, signed, and certified by a Legally Responsible Official, in accordance with section 5.1 (Designation of a Legally Responsible Official) of this General Order. If an electronic Application for Enrollment form is available at the time of application, a new applicant shall submit its application form electronically; and
• Application Fee. A fee payable to the “State Water Resources Control Board” in accordance with the Fee Schedule in the California Code of Regulations, Title 23, section 2200, or subsequent fee regulations updates.

The application fee for this General Order is based on the sanitary sewer system’s threat to water quality and complexity designations of category 2C or 3C, which is assigned based on the population served by the system. The current Fee Schedule for sanitary sewer systems is listed under subdivision (a)(2) at the following website:

Fee Schedule (https://www.waterboards.ca.gov/resources/fees/water_quality/).

2.2.2. Approval of Application Package (For New Applicants Only) The Deputy Director of the State Water Board, Division of Water Quality (Deputy Director) will consider approval of each complete Application for Enrollment package.

The Deputy Director will issue a Notice of Applicability letter which serves as approved regulatory coverage for the new Enrollee.

If the submitted application package is not complete in accordance with section 2.2.1 (Application Package Requirements) of this General Order, the Deputy Director will send a response letter to the applicant outlining the application deficiencies. The applicant will have 60 days from the date of the response letter to correct the application deficiencies and submit the identified items necessary to complete the application package to the State Water Board.

2.2.3. Electronic Reporting Account for New Enrollee
Within 30 days after the date of the Approval of Complete Application Package for System Enrollment, a duly authorized representative for the Enrollee shall obtain a CIWQS Sanitary Sewer System Database user account by clicking the “User Registration” button and following the directions on the CIWQS Login Page

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER

ORDER 2022-0103-DWQ December 6, 2022
7 (https://ciwqs.waterboards.ca.gov). If additional assistance is needed to establish an online CIWQS user account, contact State Water Board staff by email at [email protected]. The online user account will provide the Enrollee secure access to the online CIWQS database for electronic reporting.

2.3. Regulatory Coverage Transfer
Regulatory coverage under this General Order is not transferable to any person or party except after an existing Enrollee submits a written request for a regulatory coverage transfer to the Deputy Director, at least 60 days in advance of any proposed system ownership transfer. The written request must include a written agreement between the existing Enrollee and the new Enrollee containing:
• Acknowledgement that the transfer of ownership is solely of an existing system with an existing waste discharge identification (WDID) number; • The specific ownership transfer date in which the responsibility and regulatory coverage transfer between the existing Enrollee and the new Enrollee becomes effective; and
• Acknowledgement that the existing Enrollee is liable for violations occurring up to the ownership transfer date and that the new Enrollee is liable for violations occurring on and after the ownership transfer date.

The Deputy Director will consider approval of the written request. If approved, the Deputy Director will issue a Notice of Applicability letter which serves as an approved transfer of regulatory coverage to the new Enrollee.

3. FINDINGS

3.1. Legal Authorities

3.1.1. Federal and State Regulatory Authority
The objective of the Clean Water Act is to restore and maintain the chemical, physical, and biological integrity of the waters of the United States (33 U.S.C. 1251). The Water Code authorizes the State Water Board to implement the Clean Water Act in the State and to protect the quality of all waters of the State (Water Code sections 13000 and 13160).

3.1.2. Discharge of Sewage
A discharge of untreated or partially treated sewage is a discharge of waste as defined in Water Code section 13050(d) that could affect the quality of waters of the State and is subject to regulation by waste discharge requirements issued pursuant to Water Code section 13263 and Chapter 9, Division 3, Title 23 of the California Code of Regulations.

A discharge of sewage may pollute and alter the quality of the waters of the State to a degree that unreasonably affects the beneficial uses of the receiving water body or facilities that serve those beneficial uses (Water Code section 13050(l)(1)).

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER

ORDER 2022-0103-DWQ December 6, 2022
8 3.1.3 Water Boards Authority to Require Technical Reports, Monitoring, and Reporting Water Code sections 13267 and 13383 authorize the Regional Water Boards and the State Water Board to establish monitoring, inspection, entry, reporting, and recordkeeping requirements. Water Code section 13267(b), authorizes the Regional Water Boards to “require any person who has discharged, discharges, or is suspected of having discharged or discharging, or who proposes to discharge waste within its region… or is suspected of having discharged or discharging, or who proposes to discharge, waste outside of its region that could affect the quality of water within its region shall furnish, under penalty of perjury, technical or monitoring reports which the regional board requires…In requiring those reports, the regional board shall provide the person with a written explanation with regard to the need for the reports and shall identify the evidence that supports requiring that person to provide the reports.” Water Code section 13267(f) authorizes the State Water Board to require this information if it consults with the Regional Water Boards and determines that it will not duplicate the efforts of the Regional Water Boards. The State Water Board has consulted with the Regional Water Boards and made this determination.

The technical and monitoring reports required by this General Order and Attachment E (Notification, Monitoring, Reporting and Recordkeeping Requirements) are necessary to evaluate and ensure compliance with this General Order. The effort to develop required technical reports will vary depending on the system size and complexity and the needs of the specific technical report. The burden and cost of these reports are reasonable and consistent with the interest of the state in protecting water quality, which is the primary purpose of requiring the reports.

Water Code section 13383(a) authorizes the Water Boards to “establish monitoring, inspection, entry, reporting, and recordkeeping requirements… for any person who discharges, or proposes to discharge, to navigable waters, any person who introduces pollutants into a publicly owned treatment works, any person who owns or operates, or proposes to own or operate, a publicly owned treatment works or other treatment works treating domestic sewage, or any person who uses or disposes, or proposes to use or dispose, of sewage sludge.” Section 13383(b) continues, “the state board or the regional boards may require any person subject to this section to establish and maintain monitoring equipment or methods, including, where appropriate, biological monitoring methods, sample effluent as prescribed, and provide other information as may be reasonably required.”
Reporting of spills from privately owned sewer laterals and systems pursuant to section

5.15 (Voluntary Reporting of Spills from Privately-Owned Sewer Laterals and/or Private Sanitary Sewer Systems) of this General Order is authorized by Water Code section 13225(c) and encouraged by the State Water Board, wherein a local agency may investigate and report on any technical factors involved in water quality control provided the burden including costs of such reports bears a reasonable relationship to the need for the report and the benefits to be obtained therefrom. The burden of reporting private spills under section 5.15 (Voluntary Reporting of Spills from Privately-Owned Sewer Laterals and/or Private Sanitary Sewer Systems) is minimal and is outweighed by the benefit of providing Regional Water Boards an opportunity to respond to these spills

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER

ORDER 2022-0103-DWQ December 6, 2022
9 when an Enrollee, which in many cases has a contractual relationship with the owner of the private system, has knowledge of the spills.

3.1.4. Water Board Authority to Prescribe General Waste Discharge Requirements Water Code section 13263(i) provides that the State Water Board may prescribe general waste discharge requirements for a category of discharges if the State Water Board finds or determines that:
• The discharges are produced by the same or similar operations; • The discharges involve the same or similar types of waste; • The discharges require the same or similar treatment standards; and • The discharges are more appropriately regulated under general waste discharge requirements than individual waste discharge requirements.

Since 2006, the State Water Board has been regulating over 1,100 publicly owned sanitary sewer systems (See section 3.1.5 (Previous Statewide General Waste Discharge Requirements) of this General Order). California also has a large unknown number of unregulated privately owned sanitary sewer systems. All waste conveyed in publicly owned and privately owned sanitary sewer systems (as defined in this General Order) is comprised of untreated or partially treated domestic waste and/or industrial waste. Generally, sanitary sewer systems are designed and operated to convey waste by gravity or under pressure; system-specific design elements and system-specific operations do not change the common nature of the waste, the common threat to public health, or the common impacts on water quality. Spills of waste from a sanitary sewer system prior to reaching the ultimate downstream treatment facility are unauthorized and enforceable by the State Water Board and/or a Regional Water Board. Therefore, spills from sanitary sewer systems are more appropriately regulated under general waste discharge requirements.

As specified in Water Code sections 13263(a) and 13241, the implementation of requirements set forth in this Order is for the reasonable protection of past, present, and probable future beneficial uses of water and the prevention of nuisance. The requirements implement the water quality control plans (Basin Plans) for each Regional Water Board and take into account the environmental characteristics of sewer service areas and hydrographic units within the state. Additionally, the State Water Board has considered water quality conditions that could reasonably be achieved through the coordinated control of all factors that affect water quality, costs associated with compliance with these requirements, the need for developing housing within California, and the need to protect sources of drinking water and other water supplies.

3.1.5. Previous Statewide General Waste Discharge Requirements On May 2, 2006, the State Water Board adopted Order 2006-0003-DWQ serving as Waste Discharge Requirements pursuant to Article 4, Chapter 4, Division 7 of the Water Code (commencing with section 13260) for inadvertent discharges to waters of the State. Order 2006-0003-DWQ prohibited discharges of untreated or partially treated sewage. Order 2006-0003-DWQ also required system-specific management, operation, and maintenance of publicly owned sewer systems greater than one mile in length.

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER

ORDER 2022-0103-DWQ December 6, 2022
10 To decrease the impacts on human health and the environment caused by sewage spills, the previous Order required enrollees to develop a rehabilitation and replacement plan that identifies system deficiencies and prioritizes short-term and long-term rehabilitation actions. The previous Order also required enrollees to:

1. Maintain information that can be used to establish and prioritize appropriate Sewer System Management Plan activities; and

2. Implement a proactive approach to reduce spills.

The previous Order required Sewer System Management Plan elements for “the proper and efficient management, operation, and maintenance of sanitary sewer systems, while taking into consideration risk management.”
On July 30, 2013, the State Water Board amended General Order 2006-0003-DWQ with Order WQ 2013-0058-EXEC, Amending Monitoring and Reporting Program for Statewide General Waste Discharge Requirements for Sanitary Sewer Systems.

Many enrollees of Order 2006-0003-DWQ have already implemented proactive measures to reduce sewage spills. Other enrollees, however, still need technical assistance and funding to improve sanitary sewer system operation and maintenance for the reduction of sewage spills.

3.1.6. Existing Memorandum of Agreement with California Water Environment Association
The California Water Environment Association is a nonprofit organization dedicated to providing water industry certifications, training, and networking opportunities. The Association’s Technical Certification Program provides accredited sanitary sewer system operator certification for collection system operators and maintenance workers.

On February 10, 2016, the State Water Board entered into a collaborative agreement with the Association titled Memorandum of Agreement Between the California State Water Resources Control Board and the California Water Environment Association - Training Regarding Requirements Set Forth in Statewide General Waste Discharge Requirements for Sanitary Sewer Systems. The Memorandum sets forth collaborative training necessary for regulated sanitary sewer system personnel to operate and maintain a well operating system and ensure full compliance with statewide sewer system regulations.

On March 15, 2018, the State Water Board and the California Water Environment Association amended the existing Memorandum of Agreement to include collaborative outreach and expand training needs associated with further updates to Water Board regulations for sanitary sewer systems. The State Water Board encourages further Agreement updates as necessary to support improved sewer system operations and the professionalism of collection system operators.

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER

ORDER 2022-0103-DWQ December 6, 2022
11 3.2. General

3.2.1. Waters of the State
Waters of the State include any surface water or groundwater, including saline waters, within the boundaries of the state as defined in Water Code section 13050(e), and are inclusive of waters of the United States.

3.2.2. Sanitary Sewer System Spill Threats to Public Health and Beneficial Uses Sewage contains high levels of suspended solids, pathogenic organisms, toxic pollutants, nutrients, oxygen-demanding organic compounds, oil and grease and other pollutants. Sewage spills may cause a public nuisance, particularly when sewage is discharged to areas with high public exposure such as streets and surface waters used for drinking, irrigation, fishing, recreation, or other public consumption or contact uses.

More specifically, sanitary sewer spills may:
• Adversely affect aquatic life and/or threaten water quality when reaching receiving waters;
• Inadvertently release trash, including plastics;
• Impair the recreational use and aesthetic enjoyment of surface waters by polluting surface water or groundwater;
• Threaten public health through direct public exposure to bacteria, viruses, intestinal parasites, and other microorganisms that can cause serious illness such as gastroenteritis, hepatitis, cryptosporidiosis, and giardiasis; • Negatively impact ecological receptors and biota within surface waters; and • Cause nuisance including odors, closure of beaches and recreational areas, and property damage.

Sanitary sewer system spills may pollute receiving waters and threaten beneficial uses of surface water and groundwater. Potentially threatened beneficial uses include, but are not limited to the following (with associated acronym representations as included in statewide water quality control plans and Regional Water Boards’ Basin Plans):
• Municipal and Domestic Supply (MUN)
• Water Contact Recreation (REC-1) and Non-Contact Water Recreation (REC-2) • Cold Freshwater Habitat (COLD)
• Warm Freshwater Habitat (WARM)
• Native American Culture (CUL)
• Wildlife Habitat (WILD)
• Rare, Threatened, or Endangered Species (RARE)
• Spawning, Reproduction, and/or Early Development (SPWN) • Wetland Habitat (WET)
• Agricultural Supply (AGR)
• Estuarine Habitat (EST)

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER

ORDER 2022-0103-DWQ December 6, 2022
12 • Commercial and Sport Fishing (COMM)
• Subsistence Fishing (SUB)
• Tribal Tradition and Culture (CUL)
• Tribal Subsistence Fishing (T-SUB)
• Aquaculture (AQUA)
• Marine Habitat (MAR)
• Preservation of Biological Habitats of Special Significance (BIOL) • Migration of Aquatic Organisms (MIGR)
• Shellfish Harvesting (SHELL)
• Industrial Process Supply (PROC)
• Industrial Service Supply (IND)
• Hydropower Generation (POW)
• Navigation (NAV)
• Flood Peak Attenuation/Flood Water Storage (FLD)
• Water Quality Enhancement (WQE)
• Fresh Water Replenishment (FRSH)
• Groundwater Recharge (GWR)
• Inland Saline Water Habitat (SAL)

3.2.3. Proactive Sanitary Sewer System Management to Eliminate Spill Causes Finding 3 of the previous Order, 2006-0003-DWQ, states: “Sanitary sewer systems experience periodic failures resulting in discharges that may affect waters of the state.

There are many factors (including factors related to geology, design, construction methods and materials, age of the system, population growth, and system operation and maintenance), which affect the likelihood of an SSO [sanitary sewer overflow].

A proactive approach that requires Enrollees to ensure a system-wide operation, maintenance, and management plan is in place will reduce the number and frequency of SSOs within the state. This approach will in turn decrease the risk to human health and the environment caused by SSOs.”
Many spills are preventable through proactive attention on sanitary sewer system management using the best practices and technologies available to address major causes of spills, including but not limited to:
• Blockages from sources including but not limited to:
o Fats, oils and grease;
o Tree roots;
o Rags, wipes and other paper, cloth and plastic products; and o Sediment and debris.
• Sewer system damage and exceedance of sewer system hydraulic capacity from identified system-specific environmental, and climate-change impacts, including but not limited to:

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER

ORDER 2022-0103-DWQ December 6, 2022
13 o Sea level rise impacts including flooding, coastal erosion, seawater intrusion, tidal inundation and submerged lands;
o Increased surface water flows due to higher intensity rain events; o Flooding;
o Wildfires and wildfire induced impacts;
o Earthquake induced damage;
o Landslides; and
o Subsidence.
• Infrastructure deficiencies and failures, including but not limited to:
o Pump station mechanical failures;
o System age;
o Construction material failures;
o Manhole cover failures;
o Structural failures; and
o Lack of proper operation and maintenance.
• Insufficient system capacity (temporary or sustained), due to factors including but not limited to:
o Excessive and/or increased storm or groundwater inflow/infiltration; o Insufficient capacity due to population increase and/or new connections from industrial, commercial and other system users; and
o Stormwater capture projects utilizing a sanitary sewer system to convey stormwater to treatment facilities for reuse.
• Community impacts, including but not limited to:
o Power outages;
o Vandalism; and
o Contractor-caused or other third party-caused damages.

3.2.4. Underground Sanitary Sewer System Leakage
Portions of some sanitary sewer systems may leak, causing underground exfiltration (exiting) of sewage from the system. Exfiltrated sewage that remains in the underground infrastructure trench and/or the soil matrix, and that does not discharge into waters of the State (surface water or groundwater) may not threaten beneficial uses.

Underground exfiltrated sewage may threaten beneficial uses if discharged to waters of the State. Exfiltrated sewage that discharges to groundwater may impact beneficial uses of groundwater and pollute groundwater supply. Additionally, if in close proximity, exfiltrated sewage may enter into a compromised underground drainage conveyance system that discharges into a water of the United States, or into groundwater that is hydrologically connected to (feeds into) a water of the United States, thus potentially causing: (1) a Clean Water Act violation, (2) threat and impact to beneficial uses, and/or (3) surface water pollution.

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER

ORDER 2022-0103-DWQ December 6, 2022
14 3.2.5. Proactive Sanitary Sewer System Management to Reduce Inflow and Infiltration Excessive inflow (stormwater entering) and infiltration (groundwater seepage entering) to sanitary sewer systems is preventable through proactive sewer system management using the best practices and technologies available. The efficiency of the downstream wastewater treatment processes is dependent on the performance of the sanitary sewer system. When the structural integrity of a sanitary sewer system deteriorates, high volumes of inflow and infiltration can enter the sewer system. High levels of inflow and infiltration increase the hydraulic load on the downstream treatment plant, which can reduce treatment efficiency, lead to bypassing a portion of the treatment process, cause illegal discharge of partially treated effluent, or in extreme situations make biological treatment facilities inoperable (e.g., wash out the biological organisms that treat the waste).

3.3. Water Quality Control Plans, Policies and Resolutions The nine Regional Water Boards have adopted region-specific water quality control plans (commonly referred to as Basin Plans) that designate beneficial uses, establish water quality objectives, and contain implementation programs and policies to achieve those objectives. The State Water Board has adopted statewide water quality control plans, policies and resolutions establishing statewide water quality objectives, implementation programs and initiatives.

3.3.1. State Water Board Antidegradation Policy
On October 28, 1968, the State Water Board adopted Resolution 68-16, titled Statement of Policy with Respect to Maintaining High Quality of Waters in California, which incorporates the federal antidegradation policy. Resolution 68-16 requires that existing water quality be maintained unless degradation is justified based on specific findings.

The continued prohibition of sewage discharges from sanitary sewer systems into waters of the State aligns with Resolution 68-16. A sewage discharge from sanitary sewers to waters of the State is prohibited by this Order. Therefore, this Order does not allow degradation of waters of the State. In addition, this Order: (1) further expands the existing prohibition of sewage discharges to include waters of the State, in addition to waters of the United States as provided in previous Order 2006-0003-DWQ, and (2) enhances the ability for Water Board enforcement of violations of the established prohibitions.

3.3.2. State Water Board Sources of Drinking Water Policy On May 19,1988, the State Water Board adopted Resolution 88-63 (amended on February 1, 2006), titled Sources of Drinking Water, establishing state policy that all waters of the State, with certain exceptions, are suitable or potentially suitable for municipal or domestic supply.

3.3.3. State Water Board Cost of Compliance Resolution
On September 24, 2013, the State Water Board adopted Resolution 2013-0029, titled Directing Actions in Response to Efforts by Stakeholders on Reducing Costs of

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER

ORDER 2022-0103-DWQ December 6, 2022
15 Compliance While Maintaining Water Quality Protection. Through this resolution, the State Water Board committed to continued stakeholder engagement in identifying and implementing measures to reduce costs of compliance with regulatory orders while maintaining water quality protection and improving regulatory program outcomes.

3.3.4. State Water Board Human Right to Water Resolution On February 16, 2016, the State Water Board adopted Resolution 2016-0010, titled Adopting the Human Right to Water as a Core Value and Directing its Implementation in Water Board Programs and Activities, addressing the human right to water as a core value and directing Water Board programs to implement requirements to support safe drinking water for all Californians.

On November 16, 2021, the State Water Board adopted Resolution 2021-0050 titled Condemning Racism, Xenophobia, Bigotry, and Racial Injustice, and Strengthening Commitment to Racial Equity, Diversity, Inclusion, Access, and Anti-racism. Among other actions, through Resolution 2021-0050, the State Water Board, in summary as corresponding to this General Order, reaffirms its commitment to its Human Right to Water resolution, upholding that every human being in California deserves safe, clean, affordable, and accessible water for human consumption, cooking, and sanitation purposes. Resolution 2021-0050 provides the State Water Board commitment to:
• Protect public health and beneficial uses of waterbodies in all communities, including communities disproportionately burdened by wastes discharge of waste to land and surface water;
• Restore impaired surface waterbodies and degraded aquifers; and • Promote multi-benefit water quality projects.

Through Resolution 2021-0050, the State Water Board also commits to expanding implementation of its Climate Change Resolution to address the disproportionate effects of extreme hydrologic conditions and sea-level rise on Black, Indigenous, and people of color communities, prioritizing:
• The right to safe, clean, affordable, and accessible drinking water and sanitation; • Sustainable management and protection of local groundwater resources; • Healthy watersheds; and
• Access to surface waterbodies that support subsistence fishing.

On June 7, 2022, the State Water Board adopted a Resolution, titled Authorizing the Executive Director or Designee to Enter into One or More Multi-Year Contracts Up to a Combined Sum of $4,000,000 for a Statewide Wastewater Needs Assessment, supporting the equitable access to sanitation for all Californians and implementation of Resolutions 2016-0010 and 2021-0050.

This General Order supports the State Water Board priority in collecting a comprehensive set of data for California’s wastewater systems, including sanitary sewer systems. Data reported per the requirements of this Order will be used with data from other Water Boards’ programs, to further develop criteria and create a statewide risk

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER

ORDER 2022-0103-DWQ December 6, 2022
16 framework to prioritize critical funding and infrastructure investments for California’s most vulnerable populations, including disadvantaged or severely disadvantaged communities with inadequate or failing sanitation systems and threatened access to healthy drinking water supplies.

3.3.5. State Water Board Open Data Resolution
On July 10, 2018, the State Water Board adopted Resolution 2018-0032, titled Adopting Principles of Open Data as a Core Value and Directing Programs and Activities to Implement Strategic Actions to Improve Data Accessibility and Associated Innovation, directing regulatory programs to assure all monitoring and reporting requirements support the State Water Boards’ Open Data Initiative.

3.3.6. State Water Board Response to Climate Change
On March 7, 2017, the State Water Board adopted Resolution 2017-0012, titled Comprehensive Response to Climate Change, requiring a proactive response to climate change in all California Water Board actions, with the intent to embed climate change consideration into all programs and activities.

3.4. California Environmental Quality Act
The adoption of this Order is an action to reissue general waste discharge requirements that is exempt from the California Environmental Quality Act (Public Resources Code section 21000 et seq.) because it is an action taken by a regulatory agency to assure the protection of the environment and the regulatory process involves procedures for protection of the environment (Cal. Code Regs., Title 14, section 15308). In addition, the action to adopt this Order is exempt from CEQA pursuant to Cal. Code Regs., Title 14, section 15301, to the extent that it applies to existing sanitary sewer collection systems that constitute “existing facilities” as that term is used in sections 15301 and 15302, to the extent that it results in the repair or replacement of existing systems involving negligible or no expansion of capacity.

3.5. State Water Board Funding Assistance for Compliance with Water Board Water Quality Orders
The State Water Board, Division of Financial Assistance administers the implementation of the State Water Board financial assistance programs, per Board-adopted funding policies. Among other funding areas, the Division administers loan and grant funding for the planning and construction of wastewater and water recycling facilities per funding program-specific policies and guidelines. Applicants may apply for Clean Water State Revolving Fund low-interest loan, Small Community Wastewater grant funding assistance, and other funding available at the time of application, for some of the costs associated with complying with this General Order.

Funding applicants may obtain further information regarding current funding opportunities, and Division of Financial Assistance staff contact information at the following website: Financial Assistance Funding - Grants and Loans | California State Water Resources Control Board.
(https://www.waterboards.ca.gov/water_issues/programs/grants_loans/)

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER

ORDER 2022-0103-DWQ December 6, 2022
17 Section 13477.6 of the Water Code authorizes the Small Community Grant Fund.

The Small Community Grant Fund allows the State Water Board to provide grant funding assistance to small, disadvantaged communities and small severely disadvantaged communities that may not otherwise be able to afford a loan or similar financing for projects to comply with requirements of this General Order. The State Water Board also considers loan forgiveness on a disadvantaged community-specific basis.

For disadvantaged communities’ wastewater needs, the State Water Board places priority on the funding of projects that address:
• Public health;
• Violations of waste discharge requirements and National Pollutant Discharge Elimination System (NPDES) permits;
• Providing sewer system service to existing septic tank owners; and • High priority public health and water quality concerns identified by a Regional Water Board.

3.6. Notification to Interested Parties
On January 31, 2022, the State Water Board notified interested parties and persons of its intent to reissue Sanitary Sewer Systems General Order 2006-0003-DWQ by issuing a draft General Order for a 60-day public comment period. State Water Board staff conducted extensive stakeholder outreach and encouraged public participation in the adoption process for this General Order. On March 15, 2022, the State Water Board held a public meeting to hear and consider oral public comments. The State Water Board considered all public comments prior to adopting this General Order.

THEREFORE, IT IS HEREBY ORDERED, that pursuant to Water Code sections 13263, 13267, and 13383 this General Order supersedes Order 2006-0003-DWQ, Order WQ 2013-0058-EXEC, and any amendments made to these Orders thereafter, except for enforcement purposes and to meet the provisions contained in Division 7 of the Water Code (commencing with section 13000) and regulations adopted thereunder, and the provisions of the Clean Water Act and regulations and guidelines adopted thereunder, the Enrollee shall comply with the requirements in this Order.

4. PROHIBITIONS

4.1 Discharge of Sewage from a Sanitary Sewer System
Any discharge from a sanitary sewer system that has the potential to discharge to surface waters of the State is prohibited unless it is promptly cleaned up and reported as required in this General Order.

4.2. Discharge of Sewage to Waters of the State
Any discharge from a sanitary sewer system, discharged directly or indirectly through a drainage conveyance system or other route, to waters of the State is prohibited.

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER

ORDER 2022-0103-DWQ December 6, 2022
18 4.3. Discharge of Sewage Creating a Nuisance
Any discharge from a sanitary sewer system that creates a nuisance or condition of pollution as defined in Water Code section 13050(m) is prohibited.

5. SPECIFICATIONS

5.1. Designation of a Legally Responsible Official
The Enrollee shall designate a Legally Responsible Official that has authority to ensure the enrolled sanitary sewer system(s) complies with this Order, and is authorized to serve as a duly authorized representative. The Legally Responsible Official must have responsibility over management of the Enrollee’s entire sanitary sewer system, and must be authorized to make managerial decisions that govern the operation of the sanitary sewer system, including having the explicit or implicit duty of making major capital improvement recommendations to ensure long-term environmental compliance.

The Legally Responsible Official must have or have direct authority over individuals that:
• Possess a recognized degree or certificate related to operations and maintenance of sanitary sewer systems, and/or
• Have professional training and experience related to the management of sanitary sewer systems, demonstrated through extensive knowledge, training and experience.

For example, a sewer system superintendent or manager, an operations manager, a public utilities manager or director, or a district engineer may be designated as a Legally Responsible Official.

The Legally Responsible Official shall complete the electronic CIWQS “User Registration” form (https://ciwqs.waterboards.ca.gov/ciwqs/newUser.jsp). A Legally Responsible Official that represents multiple enrolled systems shall complete the electronic CIWQS “User Registration” form for each system.

The Enrollee shall submit any change to its Legally Responsible Official, and/or change in contact information, to the State Water Board within 30 calendar days of the change by emailing [email protected] and copying the appropriate Regional Water Board as provided in Attachment F (Regional Water Quality Control Board Contact Information) of this General Order.

5.2. Sewer System Management Plan Development and Implementation To facilitate adequate local funding and management of its sanitary sewer system(s), the Enrollee shall develop and implement an updated Sewer System Management Plan.

The scale and complexity of the Sewer System Management Plan, and specific elements of the Plan, must match the size, scale and complexity of the Enrollee’s sanitary sewer system(s). The Sewer System Management Plan must address, at minimum, the required Plan elements in Attachment D (Sewer System Management Plan – Required Elements) of this General Order. To be effective, the Sewer System Management Plan must include procedures for the management, operation, and maintenance of the sanitary sewer system(s). The procedures must: (1) incorporate the

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER

ORDER 2022-0103-DWQ December 6, 2022
19 prioritization of system repairs and maintenance to proactively prevent spills, and (2) address the implementation of current standard industry practices through available equipment, technologies, and strategies.

For an existing Enrollee under Order 2006-0003-DWQ that has certified its Continuation of Existing Regulatory Coverage, per section 2.1 (Requirements for Continuation of Existing Regulatory Coverage) of this General Order:

Within six (6) months of the Adoption Date of this General Order:
• The Legally Responsible Official shall upload the Enrollee’s existing Sewer System Management Plan to the online CIWQS Sanitary Sewer System Database.

For a new Enrollee:

Within twelve (12) months of the Application for Enrollment approval date:
• The governing entity of the new Enrollee shall approve its Sewer System Management Plan; and
• The Legally Responsible Official shall certify and upload its Sewer System Management Plan to the online CIWQS Sanitary Sewer System Database.

5.3. Certification of Sewer System Management Plan and Plan Updates The Legally Responsible Official shall certify and upload its Sewer System Management Plan and all subsequent updates to the online CIWQS Sanitary Sewer System Database.

5.4. Sewer System Management Plan Audits
The Enrollee shall conduct an internal audit of its Sewer System Management Plan, and implementation of its Plan, at a minimum frequency of once every three years. The audit must be conducted for the period after the end of the Enrollee’s last required audit period. Within six months after the end of the required 3-year audit period, the Legally Responsible Official shall submit an audit report into the online CIWQS Sanitary Sewer System Database per the requirements in section 3.10 (Sewer System Management Plan Audit Reporting Requirements) of Attachment E1 of this General Order.

Audit reports submitted to the CIWQS Sanitary Sewer System Database will be viewable only to Water Boards staff.

The internal audit shall be appropriately scaled to the size of the system(s) and the number of spills. The Enrollee’s sewer system operators must be involved in completing the audit. At minimum, the audit must:
• Evaluate the implementation and effectiveness of the Enrollee’s Sewer System Management Plan in preventing spills;
• Evaluate the Enrollee’s compliance with this General Order; • Identify Sewer System Management Plan deficiencies in addressing ongoing spills and discharges to waters of the State; and

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER

ORDER 2022-0103-DWQ December 6, 2022
20 • Identify necessary modifications to the Sewer System Management Plan to correct deficiencies.

The Enrollee shall submit a complete audit report that includes:
• Audit findings and recommended corrective actions;
• A statement that sewer system operators’ input on the audit findings has been considered; and
• A proposed schedule for the Enrollee to address the identified deficiencies.

A new Enrollee of this General Order (that did not have a sanitary sewer system enrolled in the previous State Water Board Order 2006-0003-DWQ) shall conduct its first internal Sewer System Management Plan audit for the time period between the date of submittal of its certified Sewer System Management Plan and the third subsequent December 31st date. The audit report must be submitted into the online CIWQS Sanitary Sewer System Database by July 1 of the following calendar year.

See the following tables for clarification:

Initial Audit Period and Audit Due Date for New Enrollees Audit Period Audit Due Date
New Enrollee
Certified Sewer System Management
Plan Submittal Date
through
the third subsequent December 31st date
July 1st date after
audit period
Example
Certified Sewer System Management
Plan Submittal Date of August 2, 2025
Audit Period of August 2, 2025 through
December 31, 2027
July 1, 2028

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER

ORDER 2022-0103-DWQ December 6, 2022
21 Initial Audit Period for Transition from 2-Year Audit Required in Previous Order 2006-0003-DWQ to 3-Year Audit Required in this General Order Audit Period Audit Due Date
An Enrollee
previously
regulated by Order
2006-003-DWQ
A 3-year period starting from the end of
last required 2-year Audit Period
Within six months
after end of 3-year
Audit Period
Example
Last required Audit Period start date of
August 2, 2021;
Audit Period of August 2, 2021 through
August 1, 2024
February 1, 2025
Three-Year Ongoing Audit Period
Audit Period Audit Due Date
Each Enrollee A 3-year period starting from the end of
last required Audit Period
Within six months
after end of 3-year
Audit Period

5.5. Six-Year Sewer System Management Plan Update
At a minimum, the Enrollee shall update its Sewer System Management Plan every six (6) years after the date of its last Plan Update due date. (For an Enrollee previously regulated by Order 2006-0003-DWQ, the six-year period shall commence on the due date identified in section 3.11 of Attachment E1 (Notification, Monitoring, Reporting and Recordkeeping Requirements) of this Order. The Updated Sewer System Management Plan must include:
• Elements required in Attachment D (Sewer System Management Plan – Required Elements) of this Order;
• Summary of revisions included in the Plan update based on internal audit findings; and
• Other sewer system management-related changes.

The Enrollee’s governing entity shall approve the updated Plan. The Legally Responsible Official shall upload and certify the approved updated Plan in the online CIWQS Sanitary Sewer System Database in accordance with section 3.11 (Sewer System Management Plan Reporting Requirements) of Attachment E1 (Notification, Monitoring, Reporting and Recordkeeping Requirements) of this General Order. During the time period in between Plan updates, the Enrollee shall continuously document changes to its Sewer System Management Plan in a change log attached to the Plan.

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER

ORDER 2022-0103-DWQ December 6, 2022
22 5.6. System Resilience
The Enrollee shall include and implement system-specific procedures in its Sewer System Management Plan to proactively prioritize: (1) operation and maintenance, (2) condition assessments, and (3) repair and rehabilitation, to address ongoing system resilience, as specified in Attachment D (Sewer System Management Plan – Required Elements) of this General Order.

5.7. Allocation of Resources
The Enrollee shall:
• Establish and maintain a means to manage all necessary revenues and expenditures related to the sanitary sewer system; and
• Allocate the necessary resources to its sewer system management program for:
o Compliance with this General Order,
o Full implementation of its updated Sewer System Management Plan, o System operation, maintenance, and repair, and
o Spill responses.

5.8. Designation of Data Submitters
The Legally Responsible Official may designate one or more individuals as a Data Submitter for reporting of spill data. The Legally Responsible Official shall authorize the designation of Data Submitter(s) through the online CIWQS database (https://ciwqs.waterboards.ca.gov) prior to the individuals establishing a CIWQS user account (https://ciwqs.waterboards.ca.gov/ciwqs/newUser.jsp) and entering spill data into the online CIWQS Sanitary Sewer System Database.

The Legally Responsible Official shall submit any change to its Data Submitter(s), and/or change in Data Submitter contact information, to the State Water Board within 30 calendar days of the change, by emailing [email protected] and copying the appropriate Regional Water Board as provided in Attachment F (Regional Water Quality Control Board Contact Information) of this General Order.

5.9. Reporting Certification
The Legally Responsible Official shall electronically certify, on the Enrollee’s behalf, all applications, reports, the Sewer System Management Plan(s) and corresponding updates, and other information submitted electronically into the online CIWQS Sanitary Sewer System Database, as follows:
“I certify under penalty of perjury under the laws of the State of California that the electronically submitted information was prepared under my direction or supervision.

Based on my inquiry of the person(s) directly responsible for gathering the information, to the best of my knowledge and belief, the information submitted is true, accurate, and complete, and complies with the Statewide Sanitary Sewer Systems General Order.

I am aware that there are significant penalties for submitting false information.”

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER

ORDER 2022-0103-DWQ December 6, 2022
23 Hardcopy submittals to the State Water Board must be accompanied by the above certification statement.

5.10. System Capacity
The Enrollee shall maintain the system capacity necessary to convey: (1) base flows during dry weather conditions, and (2) wet weather peak flows consistent with designated local historic storms. Design storms must take into account system-specific stormwater contributions via inflow and infiltration, and location-specific depth of groundwater and storm frequencies. The Enrollee shall implement capital improvements to provide adequate hydraulic capacity to:
• Meet or exceed the design criteria as defined in the Enrollee’s System Evaluation and Capacity Assurance element of its Sewer System Management Plan; and • Prevent system capacity-related spills, and adverse impacts to the treatment efficiency of downstream wastewater treatment facilities.

5.11. System Performance Analysis
The Enrollee shall include a running 10-year system performance analysis in its Annual Report. The analysis must include two CIWQS-generated graphs presenting the following information:

Graph 1 – Total Spill Volume per Year:

X axis: A 10-year period which includes the current calendar year and the nine previous calendar years;
Y axis: The total spill volume, per Spill Category, for each calendar year.

Graph 2 – Total Number of Spills per Year:

X axis: A 10-year period which includes the current calendar year and the nine previous calendar years;
Y axis: The total number of spills, per Spill Category, for each calendar year.

The current calendar year is the calendar year covered in the Annual Report.

The Enrollee shall generate the graphs in CIWQS, using the existing data in the online CIWQS Sanitary Sewer System Database at the following graph generation link:
(https://ciwqs.waterboards.ca.gov/ciwqs/readOnly/PublicReportSSOServlet?reportActio n=criteria&reportId=sso_operation_report).

5.12. Spill Emergency Response Plan and Remedial Actions For Existing Enrollees (with regulatory coverage under Order 2006-0003-DWQ):

Within six (6) months of the Adoption Date of this General Order, the Enrollee shall update and implement its Spill Emergency Response Plan, per Attachment D, section 6 (Spill Emergency Response Plan) of this General Order.

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER

ORDER 2022-0103-DWQ December 6, 2022
24 For New Enrollees:

Within six (6) months of the Application for Enrollment approval date, the Enrollee shall develop and implement a Spill Emergency Response Plan, per Attachment D, section 6 (Spill Emergency Response Plan) of this General Order.

The Enrollee shall certify, in its Annual Report, that its Spill Emergency Response Plan is up to date.

The Spill Emergency Response Plan shall include measures to protect public health and the environment. The Enrollee shall respond to spills from its system(s) in a timely manner that minimizes water quality impacts and nuisance by:
• Immediately stopping the spill and preventing/minimizing a discharge to waters of the State;
• Intercepting sewage flows to prevent/minimize spill volume discharged into waters of the State;
• Thoroughly recovering, cleaning up and disposing of sewage and wash down water; and
• Cleaning publicly accessible areas while preventing toxic discharges to waters of the State.

5.13. Notification, Monitoring, Reporting and Recordkeeping Requirements The Enrollee shall comply with notification, monitoring, reporting, and recordkeeping requirements in Attachment E1 of this General Order.

5.13.1. Spill Categories
Individual spill notification, monitoring and reporting must be in accordance with the following spill categories:
• Category 1 Spill
A Category 1 spill is a spill of any volume of sewage from or caused by a sanitary sewer system regulated under this General Order that results in a discharge to:
o A surface water, including a surface water body that contains no flow or volume of water; or
o A drainage conveyance system that discharges to surface waters when the sewage is not fully captured and returned to the sanitary sewer system or disposed of properly.

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER

ORDER 2022-0103-DWQ December 6, 2022
25 A spill from an Enrollee-owned and/or operated lateral that discharges to a surface water is a Category 1 spill; the Enrollee shall report all Category 1 spills per section

3.1 of Attachment E1 (Notification, Monitoring, Reporting and Recordkeeping Requirements) of this General Order.
• Category 2 Spill
A Category 2 spill is a spill of 1,000 gallons or greater, from or caused by a sanitary sewer system regulated under this General Order that does not discharge to a surface water.

A spill of 1,000 gallons or greater that spills out of a lateral and is caused by a failure or blockage in the sanitary sewer system, is a Category 2 spill. • Category 3 Spill
A Category 3 spill is a spill of equal to or greater than 50 gallons and less than 1,000 gallons, from or caused by a sanitary sewer system regulated under this General Order that does not discharge to a surface water.

A spill of equal to or greater than 50 gallons and less than 1,000 gallons, that spills out of a lateral and is caused by a failure or blockage in the sanitary sewer system is a Category 3 spill.
• Category 4 Spill
A Category 4 spill is a spill of less than 50 gallons, from or caused by a sanitary sewer system regulated under this General Order that does not discharge to a surface water.

A spill of less than 50 gallons that spills out of a lateral and is caused by a failure or blockage in the sanitary sewer system is a Category 4 spill.

5.13.2. Annual Report
The Enrollee shall submit an Annual Report (previously termed as Collection System Questionnaire in Order 2006-0003-DWQ) as specified in section 3.9 (Annual Report) of Attachment E1 (Notification, Monitoring, Reporting and Recordkeeping Requirements) of this General Order.

For new Enrollees: Within 30 days of obtaining a CIWQS account, a new Enrollee shall submit its initial Annual Report, as specified in section 3.9 (Annual Report) of Attachment E1 (Notification, Monitoring, Reporting and Recordkeeping Requirements) of this General Order.

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER

ORDER 2022-0103-DWQ December 6, 2022
26 5.14. Electronic Sanitary Sewer System Service Area Boundary Map For continuing enrollees, starting on July 1, 2025, and no later than December 31, 2025:

For new enrollees – no earlier than July 1, 2025, or within 12 months of the Application for Enrollment approval date, whichever date is later:

The Legally Responsible Official shall submit, to the State Water Board, geospatial data detailing the locations of the Enrollee’s sanitary sewer system service area boundary, per the required content and specifications in section 3.8 (Electronic Sanitary Sewer System Service Area Boundary Map) of Attachment E1 of this General Order, for each system identified by a WDID number.

An Enrollee of a disadvantaged community that may need assistance developing an electronic map to comply with this requirement, may contact State Water Board staff for assistance at [email protected].

5.15. Voluntary Reporting of Spills from Privately-Owned Sewer Laterals and/or Private Sanitary Sewer Systems
Within 24 hours of becoming aware of a spill (as described below) from a private sewer lateral or private sanitary sewer system that is not owned/operated by the Enrollee, the Enrollee is encouraged to report the following observations to the online CIWQS Sanitary Sewer System Database at the following link:
https://ciwqs.waterboards.ca.gov:
• A spill equal or greater than 1,000 gallons that discharges (or has a potential to discharge) to a water of the State, or a drainage conveyance system that discharges to waters of the State; or
• Any volume of sewage that discharges (or has a potential to discharge) to surface waters.

In the CIWQS module, the Enrollee is encouraged to identify:
• Time of observation;
• Description of general spill location (for example, street name and cross street names);
• Estimated volume of spill;
• If known, general description of spill destination (for example, flowing into drainage channel, flowing directly into a creek, etc.); and
• If known, name of private system owner/operator.

The CIWQS database will make the name and contact information of the entity voluntarily reporting a private spill, accessible to State and Regional Water Board staff only. The CIWQS database will only make information regarding the actual spill, accessible to the public.

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER

ORDER 2022-0103-DWQ December 6, 2022
27 5.16. Voluntary Notification of Spills from Privately-Owned Laterals and/or Systems to the California Office of Emergency Services
Upon observing or acquiring knowledge of any of the following from a private sewer lateral or private sanitary sewer system that is not owned/operated by the Enrollee, the Enrollee is encouraged to notify the California Office of Emergency Services (as provided by Health and Safety Code section 5410 et. seq. and Water Code section 13271), or inform the responsible party that State law requires such notification to the Office of Emergency Services by any person that causes or allows a sewage discharge to waters of the State:
• A spill equal to 1,000 gallons or more that discharges (or has a potential to discharge) to waters of the State, or a drainage conveyance system that discharges to waters of the State; or
• A spill of any volume to surface waters.

5.17. Unintended Failure to Report
If an Enrollee becomes aware that they unintentionally failed to submit relevant facts in any report required in this General Order, the Enrollee shall promptly notify Regional Water Board and State Water Board staff. Regional Water Board contact information is included in Attachment F of this Order. State Water Board staff shall be contacted by email at [email protected] for assistance in formally amending the corresponding report(s) in the online CIWQS Sanitary Sewer System Database.

5.18. Duty to Report to Water Boards
In accordance with Water Code section 13267 and/or section 13383, upon request by the State Water Board Executive Director (or designee) or a Regional Water Board Executive Officer (or designee), the Enrollee shall provide the requested information which the State or Regional Water Board deems necessary to determine compliance with this General Order.

5.19. Operation and Maintenance
To prevent discharges to the environment, the Enrollee shall maintain in good working order, and operate as designed, any facility or treatment and control system designed to contain sewage and convey it to a treatment plant.

6. PROVISIONS

6.1. Enforcement Provisions
The following enforcement provisions are based on existing federal and state regulations, laws and policies, including the federal Clean Water Act, the state Water Code and the State Water Board Enforcement Policy.

6.1.1. Enforceability of Clean Water Act and Water Code Violations Noncompliance with requirements of this General Order or discharging sewage without enrolling in this General Order constitutes a violation of the Water Code and a potential

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER

ORDER 2022-0103-DWQ December 6, 2022
28 violation of the Clean Water Act and is grounds for an enforcement action by the State Water Board or the applicable Regional Water Board. Failure to comply with the notification, monitoring, inspection, entry, reporting, and recordkeeping requirements may subject the Enrollee to administrative civil liabilities of up to $10,000 a day per violation pursuant to Water Code section 13385; up to $1,000 a day per violation pursuant to Water Code section 13268; or referral to the Attorney General for judicial civil enforcement. Discharging waste not in compliance with the requirements of this General Order or the Clean Water Act may subject the Enrollee to administrative civil liabilities up to $10,000 a day per violation and additional liability up to $10 per gallon of discharge not cleaned up after the first 1,000 gallons of discharge; up to $5,000 a day per violation pursuant to Water Code section 13350 or up to $20 per gallon of waste discharged; or referral to the Attorney General for judicial civil enforcement.

6.1.2. Monetary Penalties
The Water Code provides the State and Regional Water Boards the authority to pursue formal enforcement actions, including imposing administrative liability and civil monetary penalties, for non-compliance with the requirements of this General Order and violations of the Clean Water Act.

6.1.3. Falsifying or Failure to Report
The Water Code provides that any person failing or refusing to furnish technical or monitoring program reports, as required under this General Order, or falsifying any information provided in the technical or monitoring reports is subject to administrative liability and civil monetary penalties. Any person who knowingly fails or refuses to furnish technical or monitoring program reports or falsifies any information provided in reports required by this General Order is subject to criminal penalties.

6.1.4. Severability of General Order
The provisions of this General Order are severable; if any provision of this Order, or the application of any provision of this Order to any circumstance, is held invalid, the application of such provision to other circumstances and the remainder of this Order shall not be affected thereby.

6.1.5. Indirect Discharges
In the event that a spill enters into a drainage conveyance system, the Enrollee shall take all feasible steps to prevent discharge of sewage into waters of the State by blocking or redirecting the flow in the drainage conveyance system, removing the sewage from the drainage conveyance system, and cleaning the system in a manner that does not inadvertently impact beneficial uses of the receiving water body.

6.1.6. Water Boards’ Considerations for Discretionary Enforcement Consistent with the State Water Board Enforcement Policy, when considering Water Code section 13327 factors, the State Water Board or a Regional Water Board may consider the Enrollee’s efforts to contain, control, clean up, and mitigate spills. In assessing the factors, the State Water Board or the applicable Regional Water Board will consider:

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER

ORDER 2022-0103-DWQ December 6, 2022
29 • The Enrollee’s compliance with this General Order with a focus on compliance with reporting requirements;
• The Enrollee’s provision of adequate funding to implement the requirements of this General Order;
• The Enrollee’s compliance with providing a complete and updated Sewer System Management Plan;
• The Enrollee’s compliance with implementing its Sewer System Management Plan; • The overall effectiveness of the Enrollee’s Sewer System Management Plan with respect to:
o System management, operation, and maintenance,
o Adequate treatment facilities, sanitary sewer system facilities, and/or components with an appropriate design capacity, to reasonably prevent spills (e.g. adequately enlarging treatment or collection facilities to accommodate growth, infiltration and inflow, etc.),
o Preventive maintenance (including cleaning, root grinding, and fats, oils, and grease control) and source control measures,
o Implementation of backup equipment,
o Inflow and infiltration prevention and control,
o Appropriate sanitary sewer system capacity to prevent spills, and o The Enrollee’s responsiveness to stop and mitigate the impact of the discharge; • The Enrollee’s compliance with identifying the cause of the spill; • The Enrollee’s use of available information and observations to accurately estimate the spill volume and identify the affected or potentially affected receiving waters; • The Enrollee’s thoroughness of cleaning up sewage in drainage conveyance systems after the spill(s);
• The Enrollee’s use of water quality and biological monitoring and assessment to determine the short-term and long-term impacts to beneficial uses and the environment;
• The Enrollee’s follow up actions to improve system performance; • The Enrollee’s implementation of feasible alternatives to prevent spills, such as:
o Use of temporary storage or waste retention,
o Reduction of system inflow and infiltration,
o Collection and hauling of waste to a treatment facility, o Prevention of and/ or containment of spills due to a design storm event identified in the Enrollee’s Sewer System Management Plan,

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER

ORDER 2022-0103-DWQ December 6, 2022
30 o Implementation of available equipment, technologies, strategies, and recommended industry practices for maintaining and managing sewer systems to prevent spills, and contain and eliminate discharges to waters of the State; and • The spill duration and factors beyond the reasonable control of the Enrollee causing the event.

6.1.7. Enforcement Discretion Based on Reporting Compliance Consistent with the State Water Board Enforcement Policy, the State Water Board or a Regional Water Board may consider the Enrollee’s efforts to comply with spill reporting requirements when determining compliance with Water Code section 13267 and section 13383. When assessing Water Code section 13227 factors, the State Water Board or the applicable Regional Water Board will consider:
• The Enrollee’s diligence to comply with all reporting requirements in this General Order;
• The use of best available information for the Enrollee’s reporting of spill start date and start time in which the release of sewage from the sanitary sewer system initiated;
• The Enrollee’s reporting of spill end date, and end time to be the date and time in which the release of sewage from the sanitary sewer system was stopped; • The Enrollee’s diligence to accurately estimate and report spill volumes; • The Enrollee’s subsequent verification and/or updates to initial Draft Spill Reports in accordance with this General Order; and
• The Enrollee’s timely certification of required spill reports.

Consistent with Water Code section 13267 and section 13383, the State Water Board or a Regional Water Board may require an Enrollee to report the results of a condition assessment of a specified portion of the Enrollee’s sanitary sewer system.

6.2. Other Regional Water Board Orders
It is the intent of the State Water Board that sanitary sewer systems be regulated in a manner consistent with federal and state regulations. This Order will not be interpreted or applied:
• In a manner inconsistent with the federal Clean Water Act; • To authorize a spill or discharge that is illegal under either the Clean Water Act, the Water Code, and/or an applicable Basin Plan prohibition or water quality standard; • To prohibit a Regional Water Board from issuing an individual National Pollutant Discharge Elimination System (NPDES) permit or individual waste discharge requirements superseding an Enrollee’s regulatory coverage under this General Order for a sanitary sewer system authorized under the Clean Water Act or Water Code;

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER

ORDER 2022-0103-DWQ December 6, 2022
31 • To supersede any more specific or more stringent waste discharge requirements or enforcement orders issued by a Regional Water Board; or • To supersede any more specific or more stringent state or federal requirements in existing regulation, an administrative/judicial order, or Consent Decree.

6.3. Sewer System Management Plan Availability
The Enrollee’s updated Sewer System Management Plan must be maintained for public inspection at the Enrollee’s offices and facilities and must be available to the public through CIWQS and/or on the Enrollee’s website, in accordance with section 3.8 (Sewer System Management Plan Reporting Requirements) of Attachment E1 (Notification, Monitoring, Reporting and Recordkeeping Requirements) of this General Order.

6.4. Entry and Inspection

6.4.1. Entry and Availability of Information
The Enrollee shall allow State and Regional Water Board staff, upon presentation of credentials and other documents as may be required by law, to:
• Enter upon the Enrollee’s premises where a regulated facility or activity is located or conducted, or where records are kept under the requirements of this General Order; • Have access to and reproduce any records required to be maintained by this General Order;
• Inspect any facility and/or equipment (including monitoring and control equipment), practices, or operations required in this General Order; and • Sample or monitor substances or parameters for assuring compliance with this General Order, or as otherwise authorized by the Water Code.

6.4.2. Pre-Inspection Questionnaire
The Enrollee shall provide pre-inspection information to State and Regional Water Board staff through the completion of a Pre-Inspection Questionnaire provided by Water Board staff.

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ

ATTACHMENT A – DEFINITIONS December 6, 2022 A - 1

ATTACHMENT A - DEFINITIONS
Annual Report
An Annual Report (previously termed as Collection System Questionnaire in Order 2006-0003-DWQ) is a mandatory report in which the Enrollee provides a calendar-year update of its efforts to prevent spills.

Basin Plan
A Basin Plan is a water quality control plan specific to a Regional Water Quality Control Board (Regional Water Board), that serves as regulations to: (1) define and designate beneficial uses of surface and groundwaters, (2) establish water quality objectives for protection of beneficial uses, and (3) provide implementation measures.

Beneficial Uses
The term “Beneficial Uses” is a Water Code term, defined as the uses of the waters of the State that may be protected against water quality degradation. Examples of beneficial uses include but are not limited to, municipal, domestic, agricultural and industrial supply; power generation; recreation; aesthetic enjoyment; navigation; and preservation and enhancement of fish, wildlife, and other aquatic resources or preserves.

California Integrated Water Quality System (CIWQS)
CIWQS is the statewide database that provides for mandatory electronic reporting as required in State and Regional Water Board-issued waste discharge requirements.

Data Submitter
A Data Submitter is an individual designated and authorized by the Enrollee’s Legally Responsible Official to enter spill data into the online CIWQS Sanitary Sewer System Database. A Data Submitter does not have the authority of a Legally Responsible Official to certify reporting entered into the online CIWQS Sanitary Sewer System Database.

Disadvantaged Community
A disadvantaged community is a community with a median household income of less than eighty percent (80%) of the statewide annual median household income.

For the purpose of this General Order, there is no differentiation between a small and large disadvantaged community.

Drainage Conveyance System
A drainage conveyance system is a publicly- or privately-owned separate storm sewer system, including but not limited to drainage canals, channels, pipelines, pump stations, detention basins, infiltration basins/facilities, or other facilities constructed to transport stormwater and non-stormwater flows.

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ

ATTACHMENT A – DEFINITIONS December 6, 2022 A - 2
Enrollee
An Enrollee is a public, private, or other non-governmental entity that has obtained approval for regulatory coverage under this General Order, including:
• A state agency, municipality, special district, or other public entity that owns and/or operates one or more sanitary sewer systems:
• greater than one (1) mile in length (each individual sanitary sewer system); • one mile or less in length where the State Water Resources Control Board or a Regional Water Quality Control Board requires regulatory coverage under this Order, or • A federal agency, private company, or other non-governmental entity that owns and/or operates a sanitary sewer system of any size where the State Water Resources Control Board or a Regional Water Quality Control Board requires regulatory coverage under this Order in response to a history of spills, proximity to surface water, or other factors supporting regulatory coverage.

Environmentally Sensitive Area
An environmentally sensitive area is a designated agricultural and/or wildlife area identified to need special natural landscape protection due to its wildlife or historical value.

Exfiltration
Exfiltration is the underground exiting of sewage from a sanitary sewer system through cracks, offset or separated joints, or failed infrastructure due to corrosion or other factors.

Flood Control Channel
A flood control channel is a channel used to convey stormwater and non-stormwater flows through and from areas for flood management purposes.

Governing Entity
A governing entity includes but is not limited to the following:
• A publicly elected governing board, council, or commission of a municipal agency; • A Department or Division director of a federal or state agency that is not governed by a board;
• A governing board or commission of an organization or association; and • A private system owner/manager that is not governed by a board.

Hydrologically Connected
Two waterbodies are hydrologically connected when one waterbody flows, or has the potential to flow, into the other waterbody. For the purpose of this General Order, groundwater is hydrologically connected to a surface water when the
groundwater feeds into the surface water. (The surface
waterbody in this example is termed a gaining stream as it gains flow from surrounding groundwater.)

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ

ATTACHMENT A – DEFINITIONS December 6, 2022 A - 3
Lateral (including Lower and Upper Lateral)
A lateral is an underground segment of smaller diameter pipe that transports sewage from a customer’s building or property (residential, commercial, or industrial) to the Enrollee’s main sewer line in a street or easement. Upper and lower lateral boundary definitions are subject to local jurisdictional codes and ordinances, or private system ownership.

A lower lateral is the portion of the lateral located between the sanitary sewer system main, and either the property line, sewer clean out, curb line, established utility easement boundary, or other jurisdictional locations.

An upper lateral is the portion of the lateral from the property line, sewer clean out, curb line, established utility easement boundary, or other jurisdictional locations, to the building or property.

Legally Responsible Official
A Legally Responsible Official is an official representative, designated by the Enrollee, with authority to sign and certify submitted information and documents required by this General Order.

Nuisance
For the purpose of this General Order, a nuisance, as defined in Water Code section 13050(m), is anything that meets all of the following requirements:
• Is injurious to health, or is indecent or offensive to the senses, or an obstruction to the free use of property, so as to interfere with the comfortable enjoyment of life or property; • Affects at the same time an entire community or neighborhood, or any considerable number of persons, although the extent of the annoyance or damage inflicted upon individuals may be unequal; and
• Occurs during, or as a result of, the treatment or disposal of wastes.

Private Sewer Lateral
A private sewer lateral is the privately-owned lateral that transports sewage from private property(ies) into a sanitary sewer system.

Private Sanitary Sewer System
A private sanitary sewer system is a sanitary sewer system of any size that is owned and/or operated by a private individual, company, corporation, or organization. A private sanitary sewer system may or may not connect into a publicly owned sanitary sewer system.

Potential to Discharge, Potential Discharge
Potential to Discharge, or Potential Discharge, means any exiting of sewage from a sanitary sewer system which can reasonably be expected to discharge into a water of the State based on the size of the sewage spill, proximity to a drainage conveyance system, and the nature of the surrounding environment.

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ

ATTACHMENT A – DEFINITIONS December 6, 2022 A - 4
Receiving Water
A receiving water is a water of the State that receives a discharge of waste.

Resilience
Resilience is the ability to recover from or adjust to adversity or change, and grow from disruptions. Resilience can be built through planning, preparing for, mitigating, and adapting to changing conditions.

Sanitary Sewer System
A sanitary sewer system is a system that is designed to convey sewage, including but not limited to, pipes, manholes, pump stations, siphons, wet wells, diversion structures and/or other pertinent infrastructure, upstream of a wastewater treatment plant headworks, including:
• Laterals owned and/or operated by the Enrollee;
• Satellite sewer systems; and/or
• Temporary conveyance and storage facilities, including but not limited to temporary piping, vaults, construction trenches, wet wells, impoundments, tanks and diversion structures.

For purpose of this Order, sanitary sewer systems include only systems owned and/or operated by the Enrollee.

Satellite Sewer System
A satellite sewer system is a portion of a sanitary sewer system owned or operated by a different owner than the owner of the downstream wastewater treatment facility ultimately treating the sewage.

Sewer System Management Plan
A sewer system management plan is a living document an Enrollee develops and implements to effectively manage its sanitary sewer system(s) in accordance with this General Order.

Sewage
Sewage, and its associated wastewater, is untreated or partially treated domestic, municipal, commercial and/or industrial waste (including sewage sludge), and any mixture of these wastes with inflow or infiltration of stormwater or groundwater, conveyed in a sanitary sewer system.

Spill
A spill is a discharge of sewage from any portion of a sanitary sewer system due to a sanitary sewer system overflow, operational failure, and/or infrastructure failure. Exfiltration of sewage is not considered to be a spill under this General Order if the exfiltrated sewage remains in the subsurface and does not reach a surface water of the State.

Training
Training is in-house or external education and guidance needed that provides the knowledge, skills, and abilities to comply with this General Order.

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ

ATTACHMENT A – DEFINITIONS December 6, 2022 A - 5
Wash Down Water
Wash down water is water used to clean a spill area.

Waste
Waste, as defined in Water Code section 13050(d), includes sewage and any and all other waste substances, liquid, solid, gaseous, or radioactive, associated with human habitation, or of human or animal origin, or from any producing, manufacturing, or processing operation, including waste placed within containers of whatever nature prior to, and for purposes of, disposal.

Waste Discharge Identification Number (WDID)
A waste discharge identification number (WDID) identifies each individual sanitary sewer system enrolled under this General Order. A WDID number is assigned to each enrolled system upon an Enrollee’s approved regulatory coverage.

Waters of the State
Waters of the State are surface waters or groundwater within boundaries of the state as defined in Water Code section 13050(e), in which the State and Regional Water Boards have authority to protect beneficial uses. Waters of the State include, but are not limited to, groundwater aquifers, surface waters, saline waters, natural washes and pools, wetlands, sloughs, and estuaries, regardless of flow or whether water exists during dry conditions.

Waters of the State include waters of the United States.

Waters of the United States
Waters of the United States are surface waters or waterbodies that are subject to federal jurisdiction in accordance with the Clean Water Act.

Water Quality Objective
A water quality objective is the limit or maximum amount of pollutant, waste constituent or characteristic, or parameter level established in statewide water quality control plans and Regional Water Boards’ Basin Plans, for the reasonable protection of beneficial uses of surface waters and groundwater and the prevention of nuisance.

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ

ATTACHMENT B – APPLICATION FOR ENROLLMENT December 6, 2022 B - 1
ATTACHMENT B – APPLICATION FOR ENROLLMENT

1. Enrollment Status: (Mark only one item)
☐ New Enrollee
☐ New Enrollee with previous regulatory coverage under Order 2006-0003-DWQ (that failed to certify continuation of coverage in CIWQS per Order 2022-XXXX-DWQ) Existing WDID Number: __________________________________________________

2. Applicant Information:

Legally Responsible Official Submitting Application
First and Last Name: ____________________________________________________ Title: _________________________________________________________________ Phone: _______________________________________________________________ Email: ________________________________________________________________ System Owner/Operator Name: ______________________________________________ Mailing Address: ________________________________________________________ City, State, Zip: _________________________________________________________ County: _______________________________________________________________ Sanitary Sewer System Name: ____________________________________________ Regional Water Quality Control Board(s): ____________________________________ Signature and Date: _____________________________________________________

3. Applicant Type (Check one):
☐ City ☐ County ☐ State ☐ Federal ☐ Special District
☐ Government Combination ☐ Private ☐ Other Non-governmental Entity

4. Wastewater Treatment Plant Receiving Sanitary Sewer System Waste:

Wastewater Treatment Plant Permittee:________________________________________ WDID No.: ______________________________________________________________ STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ

ATTACHMENT B – APPLICATION FOR ENROLLMENT December 6, 2022 B - 2

5. Billing Information
Billing Address: ___________________________________________________________ City, State, Zip: ___________________________________________________________ Billing Contact Person and Title: ______________________________________________ Phone and Email Address: __________________________________________________

6. Application Fee:

The application fee, as required by Water Code section 13260, is based on the daily population served by the sanitary sewer system. See updated Fee Schedule. (https://www.waterboards.ca.gov/resources/fees/water_quality/) Check one of the following and enter fee amount:
☐ Population Served < 50,000 – Total Fee submitted: $ ___________ ☐ Population Served ≥ 50,000 – Total Fee submitted: $ ___________ Make the fee payment payable to the State Water Resources Control Board and mail the complete application package to:

State Water Resources Control Board, Accounting Office
P. O. Box 1888
Sacramento, CA 95812-1888
Attention: Statewide Sanitary Sewer System Program

7. Application Submittal Certification
I certify under penalty of perjury under the laws of the State of California that to the best of my knowledge and belief, the information in the submitted application package is true, accurate and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment.

Print Name: ______________________________________________________________ Title: ___________________________________________________________________ Signature: __________________________________________ Date: ________________ STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ

ATTACHMENT C – NOTICE OF TERMINATION December 6, 2022
C - 1

ATTACHMENT C - NOTICE OF TERMINATION

1. Enrollee Information
Enrollee Name: ___________________________________________________________ WDID No: ________________________________________________________________ Legally Responsible Official Requesting Termination of Coverage: ___________________ First and Last Name: ____________________________________________________ Title: _________________________________________________________________ Phone: _______________________________________________________________ Email: ________________________________________________________________ Mailing Address: __________________________________________________________ City, State, Zip: ___________________________________________________________ County: _________________________________________________________________ Sanitary Sewer System Name(s) or Unique Identifier(s): ___________________________ Regional Water Quality Control Board(s): _______________________________________ Signature and Date: ________________________________________________________

2. Basis of Termination
Explanation of termination, including subsequent regulatory coverage and subsequent owner/operator of enrolled sanitary sewer system, as applicable:
________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ

ATTACHMENT C – NOTICE OF TERMINATION December 6, 2022
C - 2

3. Regulatory Coverage Termination Certification
I certify under penalty of perjury under the laws of the State of California that to the best of my knowledge: 1) the sanitary sewer system I officially represent is not required to be regulated under the Statewide Waste Discharge Requirements for Sanitary Sewer Systems Order 2022-XXXX-DWQ, and 2) the information submitted in this Notice of Termination is true, accurate and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine or imprisonment. Additionally, I understand that the submittal of this Notice of Termination does not release sanitary sewer system agencies from liability for any violations of the Clean Water Act.

Print Name: ______________________________________________________________ Title: ___________________________________________________________________ Signature: __________________________________________ Date: ________________ For State Water Board Use Only
☐ Approved for Termination ☐ Denied and Returned to Enrollee Deputy Director of Water Quality Signature: _____________________________________ Date: ____________________ Notice of Termination Effective Date: __________________

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ

ATTACHMENT D – SEWER SYSTEM MANAGEMENT PLAN
REQUIRED ELEMENTS December 6, 2022
D - 1
ATTACHMENT D – SEWER SYSTEM MANAGEMENT PLAN – REQUIRED ELEMENTS Table of Contents

1. Sewer System Management Plan Goal And Introduction ............................................ D-2

1.1. Regulatory Context ........................................................................................... D-2

1.2. Sewer System Management Plan Update Schedule ......................................... D-3

1.3. Sewer System Asset Overview ......................................................................... D-3

2. Organization ................................................................................................................ D-3

3. Legal Authority ............................................................................................................. D-4

4. Operation And Maintenance Program .......................................................................... D-4

4.1. Updated Map of Sanitary Sewer System .......................................................... D-4

4.2. Preventive Operation and Maintenance Activities ............................................. D-4

4.3. Training ............................................................................................................. D-5

4.4. Equipment Inventory ......................................................................................... D-5

5. Design And Performance Provisions ........................................................................... D-5

5.1. Updated Design Criteria and Construction Standards and Specifications ......... D-5

5.2. Procedures and Standards ................................................................................ D-5

6. Spill Emergency Response Plan .................................................................................. D-6

7. Sewer Pipe Blockage Control Program ........................................................................ D-7

8. System Evaluation, Capacity Assurance and Capital Improvements ........................... D-7

8.1 System Evaluation and Condition Assessment ................................................. D-7

8.2. Capacity Assessment and Design Criteria ........................................................ D-8

8.3. Prioritization of Corrective Action ...................................................................... D-9

8.4. Capital Improvement Plan ................................................................................. D-9

9. Monitoring, Measurement and Program Modifications ................................................. D-9

10. Internal Audits ............................................................................................................ D-10

11. Communication Program ........................................................................................... D-10

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ

ATTACHMENT D – SEWER SYSTEM MANAGEMENT PLAN
REQUIRED ELEMENTS December 6, 2022
D - 2
ATTACHMENT D – SEWER SYSTEM MANAGEMENT PLAN – REQUIRED ELEMENTS A Sewer System Management Plan (Plan) is a living planning document that documents ongoing local sewer system management program activities, procedures, and decision-making – at the scale necessary to address the size and complexity of the subject sanitary sewer system(s). This Plan may incorporate other programs and other plans by reference, to address short-term and long-term system resilience through:
• Proactive planning and decision-making;
• Local government ordinances;
• Updated operations and maintenance activities and procedures; • Implementation of capital improvements;
• Sufficient local budget to support staff resources, contractors, equipment, and training; and • Updated training of staff and contractors.

The Enrollee’s development, update, and implementation of a Sewer System Management Plan addressing the requirements of this Attachment is an enforceable component of this General Order. As specified in Provision 6.1 (Enforcement Provisions) of this General Order, consistent with the Water Code and the State Water Board Enforcement Policy, the State Water Board or a Regional Water Board may consider the Enrollee’s efforts in implementing an effective Sewer System Management Plan to prevent, contain, control, and mitigate spills when considering Water Code section 13327 factors to determine necessary enforcement of this General Order.

This Attachment includes the following required elements that the Enrollee shall address in its Plan and subsequent updates. The Enrollee shall identify any requirement in this Attachment that is not applicable to the Enrollee’s sewer system and shall explain in its Plan why the requirement is not applicable.

1. 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:

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.

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ

ATTACHMENT D – SEWER SYSTEM MANAGEMENT PLAN
REQUIRED ELEMENTS December 6, 2022
D - 3

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.

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:
• Location, including county(ies);
• Service area boundary;
• Population and community served;
• System size, including total length in miles, length of gravity mainlines, length of pressurized (force) mains, and number of pump stations and siphons; • Structures diverting stormwater to the sewer system;
• Data management systems;
• Sewer system ownership and operation responsibilities between Enrollee and private entities for upper and lower sewer laterals;
• Estimated number or percent of residential, commercial, and industrial service connections; and
• 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.

2. 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:
• The name of the Legally Responsible Official as required in section 5.1 (Designation of a Legally Responsible Official) of this General Order; • The position titles, telephone numbers, and email addresses for management, administrative, and maintenance positions responsible for implementing specific Sewer System Management Plan elements;
• Organizational lines of authority; and
• Chain of communication for reporting spills from receipt of complaint or other information, including the person responsible for reporting spills to the State and Regional Water Boards and other agencies, as applicable. (For example, county STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ

ATTACHMENT D – SEWER SYSTEM MANAGEMENT PLAN
REQUIRED ELEMENTS December 6, 2022
D - 4
health officer, county environmental health agency, and State Office of Emergency Services.)

3. 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:
• Prevent illicit discharges into its sanitary sewer system from inflow and infiltration (I&I); unauthorized stormwater; chemical dumping; unauthorized debris; roots; fats, oils, and grease; and trash, including rags and other debris that may cause blockages;
• Collaborate with storm sewer agencies to coordinate emergency spill responses, ensure access to storm sewer systems during spill events, and prevent unintentional cross connections of sanitary sewer infrastructure to storm sewer infrastructure; • Require that sewer system components and connections be properly designed and constructed;
• Ensure access for maintenance, inspection, and/or repairs for portions of the service lateral owned and/or operated by the Enrollee;
• Enforce any violation of its sewer ordinances, service agreements, or other legally binding procedures; and
• Obtain easement accessibility agreements for locations requiring sewer system operations and maintenance, as applicable.

4. 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 valves, and applicable stormwater conveyance facilities within the sewer system service area boundaries.

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:
• Inspection and maintenance activities;
STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ

ATTACHMENT D – SEWER SYSTEM MANAGEMENT PLAN
REQUIRED ELEMENTS December 6, 2022
D - 5
• Higher-frequency inspections and maintenance of known problem areas, including areas with tree root problems;
• Regular visual and closed-circuit television (CCTV) inspections of manholes and sewer pipes.

The data collection system must document data from system inspection and maintenance activities, including system areas/components prone to root-intrusion potentially resulting in system backup and/or failure.

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:
• The requirements of this General Order;
• The Enrollee’s Spill Emergency Response Plan procedures and practice drills; • Skilled estimation of spill volume for field operators; and • Electronic CIWQS reporting procedures for staff submitting data.

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

5. 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.

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

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ

ATTACHMENT D – SEWER SYSTEM MANAGEMENT PLAN
REQUIRED ELEMENTS December 6, 2022
D - 6

6. SPILL EMERGENCY RESPONSE PLAN
The Plan must include an up to date Spill Emergency Response Plan to ensure prompt detection and response to spills to reduce spill volumes and collect information for prevention of future spills. The Spill Emergency Response Plan must include procedures to:
• Notify primary responders, appropriate local officials, and appropriate regulatory agencies of a spill in a timely manner;
• Notify other potentially affected entities (for example, health agencies, water suppliers, etc.) of spills that potentially affect public health or reach waters of the State;
• Comply with the notification, monitoring and reporting requirements of this General Order, State law and regulations, and applicable Regional Water Board Orders; • Ensure that appropriate staff and contractors implement the Spill Emergency Response Plan and are appropriately trained;
• Address emergency system operations, traffic control and other necessary response activities;
• Contain a spill and prevent/minimize discharge to waters of the State or any drainage conveyance system;
• Minimize and remediate public health impacts and adverse impacts on beneficial uses of waters of the State;
• Remove sewage from the drainage conveyance system;
• Clean the spill area and drainage conveyance system in a manner that does not inadvertently impact beneficial uses in the receiving waters; • Implement technologies, practices, equipment, and interagency coordination to expedite spill containment and recovery;
• Implement pre-planned coordination and collaboration with storm drain agencies and other utility agencies/departments prior, during, and after a spill event; • Conduct post-spill assessments of spill response activities; • Document and report spill events as required in this General Order; and • Annually, review and assess effectiveness of the Spill Emergency Response Plan, and update the Plan as needed.

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ

ATTACHMENT D – SEWER SYSTEM MANAGEMENT PLAN
REQUIRED ELEMENTS December 6, 2022
D - 7

7. 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:
• An implementation plan and schedule for a public education and outreach program that promotes proper disposal of pipe-blocking substances; • A plan and schedule for the disposal of pipe-blocking substances generated within the sanitary sewer system service area. This may include a list of acceptable disposal facilities and/or additional facilities needed to adequately dispose of substances generated within a sanitary sewer system service area; • The legal authority to prohibit discharges to the system and identify measures to prevent spills and blockages;
• Requirements to install grease removal devices (such as traps or interceptors), design standards for the removal devices, maintenance requirements, best management practices requirements, recordkeeping and reporting requirements; • Authority to inspect grease producing facilities, enforcement authorities, and whether the Enrollee has sufficient staff to inspect and enforce the fats, oils, and grease ordinance;
• An identification of sanitary sewer system sections subject to fats, oils, and grease blockages and establishment of a cleaning schedule for each section; and • Implementation of source control measures for all sources of fats, oils, and grease reaching the sanitary sewer system for each section identified above.

8. SYSTEM EVALUATION, CAPACITY ASSURANCE AND CAPITAL IMPROVEMENTS 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:
• Evaluate the sanitary sewer system assets utilizing the best practices and technologies available;
STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ

ATTACHMENT D – SEWER SYSTEM MANAGEMENT PLAN
REQUIRED ELEMENTS December 6, 2022
D - 8
• Identify and justify the amount (percentage) of its system for its condition to be assessed each year;
• Prioritize the condition assessment of system areas that:
o Hold a high level of environmental consequences if vulnerable to collapse, failure, blockage, capacity issues, or other system deficiencies; o Are located in or within the vicinity of surface waters, steep terrain, high groundwater elevations, and environmentally sensitive areas; o Are within the vicinity of a receiving water with a bacterial-related impairment on the most current Clean Water Act section 303(d) List;
• Assess the system conditions using visual observations, video surveillance and/or other comparable system inspection methods;
• Utilize observations/evidence of system conditions that may contribute to exiting of sewage from the system which can reasonably be expected to discharge into a water of the State;
• Maintain documents and recordkeeping of system evaluation and condition assessment inspections and activities; and
• 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.

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

The capacity assessment must consider:
• Data from existing system condition assessments, system inspections, system audits, spill history, and other available information; • Capacity of flood-prone systems subject to increased infiltration and inflow, under normal local and regional storm conditions;
STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ

ATTACHMENT D – SEWER SYSTEM MANAGEMENT PLAN
REQUIRED ELEMENTS December 6, 2022
D - 9
• Capacity of systems subject to increased infiltration and inflow due to larger and/or higher-intensity storm events as a result of climate change; • Increases of erosive forces in canyons and streams near underground and above- ground system components due to larger and/or higher-intensity storm events; • Capacity of major system elements to accommodate dry weather peak flow conditions, and updated design storm and wet weather events; and • Necessary redundancy in pumping and storage capacities.

8.3. Prioritization of Corrective Action
The findings of the condition assessments and capacity assessments must be used to prioritize corrective actions. Prioritization must consider the severity of the consequences of potential spills.

8.4. Capital Improvement Plan
The capital improvement plan must include the following items:
• Project schedules including completion dates for all portions of the capital improvement program;
• Internal and external project funding sources for each project; and • 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.

9. MONITORING, MEASUREMENT AND PROGRAM MODIFICATIONS
The Plan must include an Adaptive Management section that addresses Plan- implementation effectiveness and the steps for necessary Plan improvement, including:
• Maintaining relevant information, including audit findings, to establish and prioritize appropriate Plan activities;
• Monitoring the implementation and measuring the effectiveness of each Plan Element;
• Assessing the success of the preventive operation and maintenance activities; • Updating Plan procedures and activities, as appropriate, based on results of monitoring and performance evaluations; and
• Identifying and illustrating spill trends, including spill frequency, locations and estimated volumes.

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ

ATTACHMENT D – SEWER SYSTEM MANAGEMENT PLAN
REQUIRED ELEMENTS December 6, 2022
D - 10

10. INTERNAL 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.

11. COMMUNICATION PROGRAM
The Plan must include procedures for the Enrollee to communicate with:
• The public for:
o Spills and discharges resulting in closures of public areas, or that enter a source of drinking water, and
o The development, implementation, and update of its Plan, including opportunities for public input to Plan implementation and updates.
• Owners/operators of systems that connect into the Enrollee’s system, including satellite systems, for:
o System operation, maintenance, and capital improvement-related activities.

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E1 – NOTIFICATION, MONITORING, REPORTING
AND RECORDKEEPING REQUIREMENTS December 6, 2022
E1 - 1
ATTACHMENT E1 – NOTIFICATION, MONITORING, REPORTING AND

RECORDKEEPING REQUIREMENTS
Table of Contents

1. Notification Requirements ......................................................................................... E1-3

1.1. Notification of Spills of 1,000 Gallons or Greater to the California Office of Emergency Services ...................................................................................... E1-3

1.2. Spill Notification Information ........................................................................... E1-4

1.3. Notification of Spill Report Updates ................................................................ E1-4

2. Spill-Specific Monitoring Requirements .................................................................... E1-5

2.1 Spill Location and Spread .............................................................................. E1-5

2.2 Spill Volume Estimation.................................................................................. E1-5

2.3. Receiving Water Monitoring ............................................................................ E1-5

2.4. Safety and Access Exceptions ........................................................................ E1-8

3. Reporting Requirements ............................................................................................ E1-8

3.1. Reporting Requirements for Individual Category 1 Spill Reporting ................. E1-8

3.2. Reporting Requirements for Individual Category 2 Spill Reporting ............... E1-12

3.3. Monthly Certified Spill Reporting for Category 3 Spills .................................. E1-14

3.4. Monthly Certified Spill Reporting for Category 4 Spills .................................. E1-16

3.5. Amended Certified Spill Reports for Category 3 Spills .................................. E1-16

3.6. Annual Certified Spill Reporting of Category 4 and/or Lateral Spills ............. E1-16

3.7. Monthly Certification of “No-Spills” or “Category 4 Spills” and/or “Non-Category 1 Lateral Spills” ................................................................................................ E1-16

3.8. Electronic Sanitary Sewer System Service Area Boundary Map ................... E1-17

3.9. Annual Report (Previously termed as Collection System Questionnaire in General Order 2006-0003-DWQ) .................................................................. E1-17

3.10. Sewer System Management Plan Audit Reporting Requirements ................ E1-19

3.11. Sewer System Management Plan Reporting Requirements ......................... E1-19

4. Recordkeeping Requirements ................................................................................. E1-20

4.1. Recordkeeping Time Period .......................................................................... E1-20

4.2. Availability of Documents .............................................................................. E1-20

4.3. Spill Reports .................................................................................................. E1-20

4.4. Recordkeeping of Category 4 Spills and Non-Category 1 Lateral Spills ....... E1-21

4.5. Sewer System Telemetry Records ................................................................ E1-22

4.6. Sewer System Management Plan Implementation Records ......................... E1-22

4.7. Audit Records ................................................................................................ E1-23 STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E1 – NOTIFICATION, MONITORING, REPORTING
AND RECORDKEEPING REQUIREMENTS December 6, 2022
E1 - 2

4.8. Equipment Records ....................................................................................... E1-23

4.9. Work Orders .................................................................................................. E1-23

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E1 – NOTIFICATION, MONITORING, REPORTING
AND RECORDKEEPING REQUIREMENTS December 6, 2022
E1 - 3
ATTACHMENT E1– NOTIFICATION, MONITORING, REPORTING AND RECORDKEEPING

REQUIREMENTS
The Notification Requirements (section 1), Spill-specific Monitoring Requirements (section 2), Reporting Requirements (section 3) and Recordkeeping Requirements (section 4) in this Attachment are pursuant to Water Code section 13267 and section 13383, and are an enforceable component of this General Order. For the purpose of this General Order, the term:
• Notification means the notifying of appropriate parties of a spill event or other activity. • Spill-specific Monitoring means the gathering of information and data for a specific spill event to be reported or kept as records.
• Reporting means the reporting of information and data into the online California Integrated Water Quality System (CIWQS) Sanitary Sewer System Database. • Recordkeeping means the maintaining of information and data in an official records storage system.

Failure to comply with the notification, monitoring, reporting and recordkeeping requirements in this General Order may subject the Enrollee to civil liabilities of up to $10,000 a day per violation pursuant to Water Code section 13385; up to $1,000 a day per violation pursuant to Water Code section 13268; or referral to the Attorney General for judicial civil enforcement.

Water Code section 13193 et seq. requires the Regional Water Quality Control Boards (Regional Water Boards) and the State Water Resources Control Board ( State Water Board ) to collect sanitary sewer spill information for each spill event and make this information available to the public. Sanitary sewer spill information for each spill event includes but is not limited to: Enrollee contact information for each spill event, spill cause, estimated spill volume and factors used for estimation, location, date, time, duration, amount discharged to waters of the State, response and corrective action(s) taken.

1. NOTIFICATION REQUIREMENTS

1.1. Notification of Spills of 1,000 Gallons or Greater to the California Office of Emergency Services
Per Water Code section 13271, for a spill that discharges in or on any waters of the State, or discharges or is deposited where it is, or probably will be, discharged in or on any waters of the State, the Enrollee shall notify the California Office of Emergency Services and obtain a California Office of Emergency Services Control Number as soon as possible but no later than two (2) hours after:
• The Enrollee has knowledge of the spill; and
• Notification can be provided without substantially impeding cleanup or other emergency measures.

The notification requirements in this section apply to individual spills of 1,000 gallons or greater, from an Enrollee-owned and/or operated laterals, to a water of the State.

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E1 – NOTIFICATION, MONITORING, REPORTING
AND RECORDKEEPING REQUIREMENTS December 6, 2022
E1 - 4

1.2. Spill Notification Information
The Enrollee shall provide the following spill information to the California Office of Emergency Services before receiving a Control Number, as applicable:
• Name and phone number of the person notifying the California Office of Emergency Services;
• Estimated spill volume (gallons);
• Estimated spill rate from the system (gallons per minute); • Estimated discharge rate (gallons per minute) directly into waters of the State or indirectly into a drainage conveyance system;
• Spill incident description:
o Brief narrative of the spill event, and
o Spill incident location (address, city, and zip code) and closest cross streets and/or landmarks;
• Name and phone number of contact person on-scene;
• Date and time the Enrollee was informed of the spill event; • Name of sanitary sewer system causing the spill;
• Spill cause or suspected cause (if known);
• Amount of spill contained;
• Name of receiving water body receiving or potentially receiving discharge; and • Description of water body impact and/ or potential impact to beneficial uses.

1.3. Notification of Spill Report Updates
Following the initial notification to the California Office of Emergency Services and until such time that the Enrollee certifies the spill report in the online CIWQS Sanitary Sewer System Database, the Enrollee shall provide updates to the California Office of Emergency Services regarding substantial changes to:
• Estimated spill volume (increase or decrease in gallons initially estimated); • Estimated discharge volume discharged directly into waters of the State or indirectly into a drainage conveyance system (increase or decrease in gallons initially estimated); and
• Additional impact(s) to the receiving water(s) and beneficial uses.

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E1 – NOTIFICATION, MONITORING, REPORTING
AND RECORDKEEPING REQUIREMENTS December 6, 2022
E1 - 5

2. SPILL-SPECIFIC MONITORING REQUIREMENTS

2.1 Spill Location and Spread
The Enrollee shall visually assess the spill location(s) and spread using photography, global positioning system (GPS), and other best available tools. The Enrollee shall document the critical spill locations, including:
• Photography and GPS coordinates for:
o The system location where spill originated.

For multiple appearance points of a single spill event, the points closest to the spill origin.
• Photography for:
o Drainage conveyance system entry locations,
o The location(s) of discharge into surface waters, as applicable, o Extent of spill spread, and
o The location(s) of clean up.

2.2 Spill Volume Estimation
To assess the approximate spill magnitude and spread, the Enrollee shall estimate the total spill volume using updated volume estimation techniques, calculations, and documentation for electronic reporting. The Enrollee shall update its notification and reporting of estimated spill volume (which includes spill volume recovered) as further information is gathered during and after a spill event.

2.3. Receiving Water Monitoring

2.3.1. Receiving Water Visual Observations
Through visual observations and use of best available spill volume-estimating techniques and field calculation techniques, the Enrollee shall gather and document the following information for spills discharging to surface waters:
• Estimated spill travel time to the receiving water;
• For spills entering a drainage conveyance system, estimated spill travel time from the point of entry into the drainage conveyance system to the point of discharge into the receiving water;
• Estimated spill volume entering the receiving water; and • Photography of:
o Waterbody bank erosion,
o Floating matter,
o Water surface sheen (potentially from oil and grease), STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E1 – NOTIFICATION, MONITORING, REPORTING
AND RECORDKEEPING REQUIREMENTS December 6, 2022
E1 - 6
o Discoloration of receiving water, and
o Impact to the receiving water.

2.3.2. Receiving Water – Water Quality Sampling and Analysis For sewage spills in which an estimated 50,000 gallons or greater are discharged into a surface water, the Enrollee shall conduct the following water quality sampling no later than 18 hours after the Enrollee’s knowledge of a potential discharge to a surface water:
• Collect one water sample, each day of the duration of the spill, at:
o The DCS-001 location as described in section 2.3.4 (Receiving Water Sampling Locations) of this Attachment, if sewage discharges to a surface water via a drainage conveyance system; and/or
o Each of the three receiving water sampling locations in section 2.3.4 (Receiving Water Sampling Locations) of this Attachment;
If the receiving water has no flow during the duration of the spill, the Enrollee must report “No Sampling Due To No Flow” for its receiving water sampling locations.

The Enrollee shall analyze the collected receiving water samples for the following constituents per section 2.3.3 (Water Quality Analysis Specifications) of this Attachment:
• Ammonia, and
• Appropriate bacterial indicator(s) per the applicable Basin Plan water quality objectives, including one or more of the following, unless directed otherwise by the Regional Water Board:
o Total Coliform Bacteria
o Fecal Coliform Bacteria
o E-coli
o Enterococcus
Dependent on the receiving water(s), sampling of bacterial indicators shall be sufficient to determine post-spill (after the spill) compliance with the water quality objectives and bacterial standards of the California Ocean Plan or the California Inland Surface Water Enclosed Bays, and Estuaries Plan, including the frequency and/or number of post-spill receiving water samples as may be specified in the applicable plans.

The Enrollee shall collect and analyze additional samples as required by the applicable Regional Water Board Executive Officer or designee.

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E1 – NOTIFICATION, MONITORING, REPORTING
AND RECORDKEEPING REQUIREMENTS December 6, 2022
E1 - 7

2.3.3. Water Quality Analysis Specifications
Spill monitoring must be representative of the monitored activity (40 Code of Federal Regulations section 122.41(j)(1)).

Sufficiently Sensitive Methods
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. For the purposes of this General Order, a method is sufficiently sensitive when the minimum level of the analytical method approved under 40 Code of Federal Regulations Part 136 is at or below the receiving water pollutant criteria.

Environmental Laboratory Accreditation Program-Accredited Laboratories The analysis of water quality samples required per this General Order must be performed by a laboratory that has accreditation pursuant to Article 3 (commencing with section 100825) of Chapter 4 of Part 1 of Division 101 of the Health and Safety Code. (Water Code section 13176(a).) The State Water Board accredits laboratories through its Environmental Laboratory Accreditation Program (ELAP).

2.3.4. Receiving Water Sampling Locations
The Enrollee shall collect receiving water samples at the following locations.

Sampling of Flow in Drainage Conveyance System (DCS) Prior to Discharge Sampling
Location Sampling Location Description
DCS-001 A point in a drainage conveyance system before the drainage conveyance system flow discharges into a receiving water.

Receiving Surface Water Sampling (RSW)1

Sampling
Location Sampling Location Description
RSW-001
Point of Discharge
A point in the receiving water where sewage initially enters the receiving water.

RSW-001U:

Upstream of Point
of Discharge
A point in the receiving water, upstream of the point of sewage discharge, to capture ambient conditions absent of sewage discharge impacts.

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E1 – NOTIFICATION, MONITORING, REPORTING
AND RECORDKEEPING REQUIREMENTS December 6, 2022
E1 - 8
Sampling
Location Sampling Location Description
RSW-001D:

Downstream of
Point of Discharge
A point in the receiving water, downstream of the point of sewage discharge, where the spill material is fully mixed with the receiving water.
1 The Enrollee must use its best professional judgment to determine the upstream and downstream distances based on receiving water flow, accessibility to upstream/downstream waterbody banks, and size of visible sewage plume.

2.4. Safety and Access Exceptions
If the Enrollee encounters access restrictions or unsafe conditions that prevents its compliance with spill response requirements or monitoring requirements in this General Order, the Enrollee shall provide documentation of access restrictions and/or safety hazards in the corresponding required report.

3. REPORTING REQUIREMENTS
All reporting required in this General Order must be submitted electronically to the online CIWQS Sanitary Sewer System Database (https://ciwqs.waterboards.ca.gov), unless specified otherwise in this General Order. Electronic reporting may solely be conducted by a Legally Responsible Official or Data Submitter(s) previously designated by the Legally Responsible Official, as required in section 5.8 (Designation of Data Submitters) of this General Order.

The Enrollee shall report any information that is protected by the Homeland Security Act, by email to [email protected], with a brief explanation of the protection provided by the Homeland Security Act for the subject report to be protected from unauthorized disclosure and/or public access, and for official Water Board regulatory purposes only.

3.1. Reporting Requirements for Individual Category 1 Spill Reporting

3.1.1. Draft Spill Report for Category 1 Spills
Within three (3) business days of the Enrollee’s knowledge of a Category 1 spill, the Enrollee shall submit a Draft Spill Report to the online CIWQS Sanitary Sewer System Database.

The Draft Spill Report must, at minimum, include the following items:

1. Contact information: Name and telephone number of Enrollee contact person to respond to spill-specific questions;

2. Spill location name;

3. Date and time the Enrollee was notified of, or self-discovered, the spill;

4. Operator arrival time;
STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E1 – NOTIFICATION, MONITORING, REPORTING
AND RECORDKEEPING REQUIREMENTS December 6, 2022
E1 - 9

5. Estimated spill start date and time;

6. Date and time the Enrollee notified the California Office of Emergency Services, and the assigned control number;

7. Description, photographs, and GPS coordinates of the system location where the spill originated;
o If a single spill event results in multiple appearance points, provide GPS coordinates for the appearance point closest to the failure point and describe each additional appearance point in the spill appearance point explanation field;

8. Estimated total spill volume exiting the system;

9. Description and photographs of the extent of the spill and spill boundaries;

11. Description and photographs of all discharge point(s) into the surface water;

12. Estimated spill volume that discharged to surface waters; and

13. Estimated total spill volume recovered.

3.1.2. Certified Spill Report for Category 1 Spills
Within 15 calendar days of the spill end date, the Enrollee shall submit a Certified Spill Report for Category 1 spills, to the online CIWQS Sanitary Sewer System Database.

Upon completion of the Certified Spill Report, the online CIWQS Sanitary Sewer System Database will issue a final spill event identification number.

The Certified Spill Report must, at minimum, include the following mandatory information in addition to all information in the Draft Spill Report per section 3.1.1 (Draft Spill Report for Category 1 Spills) above:

1. Description of the spill event destination(s), including GPS coordinates if available, that represent the full spread and reach of the spill;

2. Spill end date and time;

3. Description of how the spill volume estimations were calculated, including at a minimum:
o The methodology, assumptions and type of data relied upon, such as supervisory control and data acquisition (SCADA) records, flow monitoring or other telemetry information used to estimate the volume of the spill discharged, and the volume of the spill recovered (if any volume of the spill was recovered), and o The methodology(ies), assumptions and type of data relied upon for estimations of the spill start time and the spill end time;
STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E1 – NOTIFICATION, MONITORING, REPORTING
AND RECORDKEEPING REQUIREMENTS December 6, 2022
E1 - 10

4. Spill cause(s) (for example, root intrusion, grease deposition, etc.);

5. System failure location (for example, main, lateral, pump station, etc.);

6. Description of the pipe material, and estimated age of the pipe material, at the failure location;

7. Description of the impact of the spill;

8. Whether or not the spill was associated with a storm event;

9. Description of spill response activities including description of immediate spill containment and cleanup efforts;

10. Description of spill corrective action, including steps planned or taken to reduce, eliminate, and prevent reoccurrence of the spill, and a schedule of major milestones for those steps;

11. Spill response completion date;

12. Detailed narrative of investigation and investigation findings of cause of spill;

13. Reasons for an ongoing investigation (as applicable) and the expected date of completion;

14. Name and type of receiving water body(s);

15. Description of the water body(s), including but not limited to:
o Observed impacts on aquatic life,
o Public closure, restricted public access, temporary restricted use, and/or posted health warnings due to spill,
o Responsible entity for closing/restricting use of water body, and o Number of days closed/restricted as a result of the spill.

16. Whether or not the spill was located within 1,000 feet of a municipal surface water intake; and

17. If water quality samples were collected, identify sample locations and the parameters the water quality samples were analyzed for. If no samples were taken, Not Applicable shall be selected.

3.1.3. Spill Technical Report for Individual Category 1 Spill in which 50,000 Gallons or Greater Discharged into a Surface Water
For any spill in which 50,000 gallons or greater discharged into a surface water, within 45 calendar days of the spill end date, the Enrollee shall submit a Spill Technical Report to the online CIWQS Sanitary Sewer System Database. The Spill Technical Report, at minimum, must include the following information:

1. Spill causes and circumstances, including at minimum:
o Complete and detailed explanation of how and when the spill was discovered; STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E1 – NOTIFICATION, MONITORING, REPORTING
AND RECORDKEEPING REQUIREMENTS December 6, 2022
E1 - 11
o Photographs illustrating the spill origin, the extent and reach of the spill, drainage conveyance system entrance and exit, receiving water, and post-cleanup site conditions;
o Diagram showing the spill failure point, appearance point(s), the spill flow path, and ultimate destinations;
o Detailed description of the methodology employed, and available data used to calculate the discharge volume and, if applicable, the recovered spill volume; o Detailed description of the spill cause(s);
o Description of the pipe material, and estimated age of the pipe material, at the failure location;
o Description of the impact of the spill;
o Copy of original field crew records used to document the spill; and o Historical maintenance records for the failure location.

2. Enrollee’s response to the spill:
o Chronological narrative description of all actions taken by the Enrollee to terminate the spill;
o Explanation of how the Sewer System Management Plan Spill Emergency Response Plan was implemented to respond to and mitigate the spill; and o Final corrective action(s) completed and a schedule for planned corrective actions, including:
▪ Local regulatory enforcement action taken against an illicit discharge in response to this spill, as applicable,
▪ Identifiable system modifications, and operation and maintenance program modifications needed to prevent repeated spill occurrences, and ▪ Necessary modifications to the Emergency Spill Response Plan to incorporate lessons learned in responding to and mitigating the spill.

3. Water Quality Monitoring, including at minimum:
o Description of all water quality sampling activities conducted; o List of pollutant and parameters monitored, sampled and analyzed; as required in section 2.3 (Receiving Water Monitoring) of this Attachment; o Laboratory results, including laboratory reports;
o Detailed location map illustrating all water quality sampling points; and o Other regulatory agencies receiving sample results (if applicable).

4. Evaluation of spill impact(s), including a description of short-term and long-term impact(s) to beneficial uses of the surface water.

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E1 – NOTIFICATION, MONITORING, REPORTING
AND RECORDKEEPING REQUIREMENTS December 6, 2022
E1 - 12

3.1.4. Amended Certified Spill Reports for Individual Category 1 Spills The Enrollee shall update or add additional information to a Certified Spill Report within 90 calendar days of the spill end date by amending the report or by adding an attachment to the Spill Report in the online CIWQS Sanitary Sewer System Database.

The Enrollee shall certify the amended report.

After 90 calendar days, the Enrollee shall contact the State Water Board at [email protected] to request to amend a Spill Report. The Legally Responsible Official shall submit justification for why the additional information was not reported within the Amended Spill Report due date.

3.2. Reporting Requirements for Individual Category 2 Spill Reporting

3.2.1. Draft Spill Report for Category 2 Spills
Within three (3) business days of the Enrollee’s knowledge of a Category 2 spill, the Enrollee shall submit a Draft Spill Report to the online CIWQS Sanitary Sewer System Database.

The Draft Spill Report must, at minimum, include the following items:

1. Contact information: Name and telephone number of Enrollee contact person to respond to spill-specific questions;

2. Spill location name;

3. Date and time the Enrollee was notified of, or self-discovered, the spill;

4. Operator arrival time;

5. Estimated spill start date and time;

6. Date and time the Enrollee notified the California Office of Emergency Services, and the assigned control number;

7. Description, photographs, and GPS coordinates of the system location where the spill originated;
If a single spill event results in multiple appearance points, provide GPS coordinates for the appearance point closest to the failure point and describe each additional appearance point in the spill appearance point explanation field;

8. Estimated total spill volume exiting the system;

9. Description and photographs of the extent of the spill and spill boundaries;

10. Did the spill reach a drainage conveyance system? If Yes:
o Description of the drainage conveyance system transporting the spill; o Photographs of the drainage conveyance system entry location(s); o Estimated spill volume fully recovered from the drainage conveyance system; o Estimated spill volume remaining within the drainage conveyance system; STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E1 – NOTIFICATION, MONITORING, REPORTING
AND RECORDKEEPING REQUIREMENTS December 6, 2022
E1 - 13
o Estimated spill volume discharged to a groundwater infiltration basin or facility, if applicable; and

11. Estimated total spill volume recovered.

3.2.2. Certified Spill Report for Category 2 Spills
Within 15 calendar days of the spill end date, the Enrollee shall submit a Certified Spill Report for the Category 2 spill, to the online CIWQS Sanitary Sewer System Database (https://ciwqs.waterboards.ca.gov). Upon completion of the Certified Spill Report, the online CIWQS Sanitary Sewer System Database will issue a final spill event identification number.

The Certified Spill Report must, at minimum, include the following mandatory information in addition to all information in the Draft Spill Report per section 3.2.1 (Draft Spill Report for Category 2 Spills) above:

1. Description of the spill event destination(s), including GPS coordinates if available, that represent the full spread and reach of the spill;

2. Spill end date and time;

4. Spill cause(s) (for example, root intrusion, grease deposition, etc.);

5. System failure location (for example, main, pump station, etc.);

6. Description of the pipe/infrastructure material, and estimated age of the pipe material, at the failure location;

7. Description of the impact of the spill;

8. Whether or not the spill was associated with a storm event;

9. Description of spill response activities including description of immediate spill containment and cleanup efforts;

10. Description of spill corrective action, including steps planned or taken to reduce, eliminate, and prevent reoccurrence of the spill, and a schedule of major milestones for those steps;

11. Spill response completion date;

12. Detailed narrative of investigation and investigation findings of cause of spill;

13. Reasons for an ongoing investigation (as applicable) and the expected date of completion; and
STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E1 – NOTIFICATION, MONITORING, REPORTING
AND RECORDKEEPING REQUIREMENTS December 6, 2022
E1 - 14

14. Whether or not the spill was located within 1,000 feet of a municipal surface water intake.

3.2.3. Amended Certified Spill Reports for Individual Category 2 Spills The Enrollee shall update or add additional information to a Certified Spill Report within 90 calendar days of the spill end date by amending the report or by adding an attachment to the Spill Report in the online CIWQS Sanitary Sewer System Database.

The Enrollee shall certify the amended report.

3.3. Monthly Certified Spill Reporting for Category 3 Spills The Enrollee shall report and certify all Category 3 spills to the online CIWQS Sanitary Sewer System Database within 30 calendar days after the end of the month in which the spills occurred. (For example, all Category 3 spills occurring in the month of February shall be reported and certified by March 30th). After the Legally Responsible Official certifies the spills, the online CIWQS Sanitary Sewer System Database will issue a spill event identification number for each spill.

The monthly reporting of all Category 3 spills must include the following items for each spill:

1. Contact information: Name and telephone number of Enrollee contact person to respond to spill-specific questions;

2. Spill location name;

3. Date and time the Enrollee was notified of, or self-discovered, the spill;

4. Operator arrival time;

5. Estimated spill start date and time;

6. Description, photographs, and GPS coordinates where the spill originated:
o If a single spill event results in multiple appearance points, provide GPS coordinates for the appearance point closest to the failure point and describe each additional appearance point in the spill appearance point explanation field;

7. Estimated total spill volume exiting the system;

8. Description and photographs of the extent of the spill and spill boundaries;

9. Did the spill reach a drainage conveyance system? If Yes:
o Description of the drainage conveyance system transporting the spill; o Photographs of the drainage conveyance system entry locations(s); o Estimated spill volume fully recovered from the drainage conveyance system; and STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E1 – NOTIFICATION, MONITORING, REPORTING
AND RECORDKEEPING REQUIREMENTS December 6, 2022
E1 - 15
o Estimated spill volume discharged to a groundwater infiltration basis or facility, if applicable.

10. Estimated total spill volume recovered;

11. Description of the spill event destination(s), including GPS coordinates, if available, that represent the full spread and reaches of the spill;

12. Spill end date and time;

13. Description of how the spill volume estimations were calculated, including, at minimum:
o The methodology and type of data relied upon, including supervisory control and data acquisition (SCADA) records, flow monitoring or other telemetry information used to estimate the volume of the spill discharged, and the volume of the spill recovered (if any volume of the spill was recovered), and o The methodology and type of data relied upon to estimate the spill start time, on-going spill rate at time of arrival (if applicable), and the spill end time;

14. Spill cause(s) (for example, root intrusion, grease deposition, etc.);

15. System failure location (for example, main, pump station, etc.);

16. Description of the pipe/infrastructure material, and estimated age of the pipe/infrastructure material, at the failure location;

17. Description of the impact of the spill;

18. Whether or not the spill was associated with a storm event;

19. Description of spill response activities including description of immediate spill containment and cleanup efforts;

20. Description of spill corrective actions, including steps planned or taken to reduce, eliminate, and prevent reoccurrence of the spill, and a schedule of the major milestones for those steps; including, at minimum:
o Local regulatory enforcement action taken against an illicit discharge in response to this spill, as applicable, and
o Identifiable system modifications, and operation and maintenance program modifications needed to prevent repeated spill occurrences at the same spill event location, including:
▪ Adjusted schedule/method of preventive maintenance,
▪ Planned rehabilitation or replacement of sanitary sewer asset, ▪ Inspected, repaired asset(s), or replaced defective asset(s), ▪ Capital improvements,
▪ Documentation verifying immediately implemented system modifications and operating/maintenance modifications,
▪ Description of spill response activities,
STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E1 – NOTIFICATION, MONITORING, REPORTING
AND RECORDKEEPING REQUIREMENTS December 6, 2022
E1 - 16
▪ Spill response completion date, and
▪ Ongoing investigation efforts, and expected completion date of investigation to determine the full cause of spill;

21. Detailed narrative of investigation and investigation findings of cause of spill.

3.4. Monthly Certified Spill Reporting for Category 4 Spills The Enrollee shall report and certify the estimated total spill volume exiting the sanitary sewer system, and the total number of all Category 4 spills to the online CIWQS Sanitary Sewer System Database, within 30 calendar days after the end of the month in which the spills occurred.

3.5. Amended Certified Spill Reports for Category 3 Spills Within 90 calendar days of the certified Spill Report due date, the Enrollee may update or add additional information to a certified Spill Report by amending the report or by adding an attachment to the Spill Report in the online CIWQS Sanitary Sewer System Database. The Enrollee shall certify the amended report.

After 90 calendar days, the Legally Responsible Official shall contact the State Water Board at [email protected] to request to amend a certified Spill Report. The Legally Responsible Official shall submit justification for why the additional information was not reported within the 90-day timeframe for amending the certified Spill Report, as provided above.

3.6. Annual Certified Spill Reporting of Category 4 and/or Lateral Spills For all Category 4 spills and spills from its owned and/or operated laterals that are caused by a failure or blockage in the lateral and that do not discharge to a surface water, the Enrollee shall:
• Maintain records per section 4.4. of this Attachment; The Enrollee shall provide records upon request by State Water Board or Regional Water Board staff.
• Annually upload and certify a report, in an appropriate digital format, of all recordkeeping of spills to the online CIWQS Sanitary Sewer System Database, by February 1st after the end of the calendar year in which the spills occurred.

A spill from an Enrollee-owned and/or operated lateral that discharges to a surface water is a Category 1 spill; the Enrollee shall report all Category 1 spills per section 3.1 of Attachment E1 (Notification, Monitoring, Reporting and Recordkeeping Requirements) of this General Order.

3.7. Monthly Certification of “No-Spills” or “Category 4 Spills” and/or “Non-Category 1 Lateral Spills”
If either (1) no spills occur during a calendar month or (2) only Category 4, and/or Enrollee-owned and/or operated lateral spills (that do not discharge to a surface water) occur during a calendar month, the Enrollee shall certify, within 30 calendar days after STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E1 – NOTIFICATION, MONITORING, REPORTING
AND RECORDKEEPING REQUIREMENTS December 6, 2022
E1 - 17
the end of each calendar month, either a “No-Spill” certification statement, or a “Category 4 Spills” and/or “Non-Category 1 Lateral Spills” certification statement, in the online CIWQS Sanitary Sewer System Database, certifying that there were either no spills, or Category 4 and/or Non-Category 1 Lateral Spills that will be reported annually (per section 3.6 of this Attachment) for the designated month.

If a spill starts in one calendar month and ends in a subsequent calendar month, and the Enrollee has no further spills of any category, in the subsequent calendar month, the Enrollee shall certify “no-spills” for the subsequent calendar month.

If the Enrollee has no spills from its systems during a calendar month, but the Enrollee voluntarily reported a spill from a private lateral or a private system, the Enrollee shall certify “no-spills” for that calendar month.

If the Enrollees has spills from its owned and/or operated laterals during a calendar month, the Enrollee shall not certify “no spills” for that calendar month.

3.8. Electronic Sanitary Sewer System Service Area Boundary Map The Legally Responsible Official shall submit, to the State Water Board, an up-to-date electronic spatial map of its sewer system service area boundaries. The map must be in accordance with section 5.14 (Electronic Sanitary Sewer System Service Area Boundary Map) of this General Order and the specification provided on the statewide Sanitary Sewer Systems program website. The map must include the location of wastewater treatment facility(ies) that treats the sewer system waste, if in the same sewer service boundary.

By the Effective Date of this General Order, specifications for the electronic sanitary sewer service area boundary map format will be provided on the statewide Sanitary Sewer Systems Order program website.

3.9. Annual Report (Previously termed as Collection System Questionnaire in General Order 2006-0003-DWQ)
A new Enrollee shall complete and submit its first certified Annual Report into the online CIWQS Sanitary Sewer System Database, within 30 days of obtaining a CIWQS account; Subsequent Annual Reports are due by April 1 of each year.

All enrollees shall update their previous year’s Annual Report, by April 1 of each year after the Effective Date of this General Order, for each calendar year (January 1 through December 31).

The Annual Report must be entered directly into the online CIWQS Sanitary Sewer System Database. The Enrollee’s Legally Responsible Official shall certify the Annual Report as instructed in CIWQS;
The Annual Report must address, and update as applicable, the following items:
• Population served;
STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E1 – NOTIFICATION, MONITORING, REPORTING
AND RECORDKEEPING REQUIREMENTS December 6, 2022
E1 - 18
• Updated sewer system service area boundary map, if service area boundary has changed from original map submitted per section 5.14 (Electronic Sanitary Sewer System Service Area Boundary Map) of this General Order; • Number of system operation and maintenance staff:
o Entry level (less than two years of experience),
o Journey level (greater than two years of experience), o Supervisory level, and
o Managerial level;
• Number of operation and maintenance staff certified as a certified collection system operator by the California Water Environmental Association (CWEA), with:
o Corresponding number of certified collection system operator grade levels (Grade I, II, III, IV, and V);
• System information:
o Miles of system gravity and force mains,
o Number of upper and lower service laterals connected to system, o Estimated number of upper and lower laterals owned and/or operated by the Enrollee,
o Portion of laterals that is Enrollee’s responsibility, o Average age the major components of system infrastructure, o Number and age of pump stations, and
o Estimated total miles of the system pipeline not accessible for maintenance; • Name and location of the treatment plant(s) receiving sanitary sewer system’s waste;
• Name of satellite sewer system tributaries;
• Number of system’s gravity sewer above or underground crossings of water bodies throughout system;
• Number of force main (pressurized pipe) above or underground crossings of water bodies throughout system;
• Number of siphons used to convey waste throughout the sewer system; • Miles of sewer system cleaned;
• Miles of sewer system video inspected, or comparable (i.e., video closed-circuit television or alternative inspection methods);
• System Performance Evaluation as specified in section 5.11 (System Performance Analysis) of this General Order;
• Major spill causes (for example, root intrusion, grease deposition); STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E1 – NOTIFICATION, MONITORING, REPORTING
AND RECORDKEEPING REQUIREMENTS December 6, 2022
E1 - 19
• System infrastructure failure points (for example, main, pump station, lateral, etc.); • Ongoing spill investigations; and
• Actions taken to address system deficiencies.

3.10. Sewer System Management Plan Audit Reporting Requirements The Enrollee shall submit its Sewer System Management Plan Audit and other pertinent audit information, in accordance with section 5.4 (Sewer System Management Plan Audits) of this General Order, to the online CIWQS Sanitary Sewer System Database by six (6) months after the end of the 3-year audit period.

If a Sewer System Management Plan Audit is not conducted as required: the Enrollee shall:
• Update the online CIWQS Sanitary Sewer System Database and select the justification for not conducting the Audit; and
• Notify its corresponding Regional Water Board (see Attachment F (Regional Water Quality Control Board Contact Information)) of the justification for the lapsed requirements.

The Enrollee’s reporting of a justification for not conducting a timely Audit does not justify non-compliance with this General Order. The Enrollee shall:
• Submit the late Audit as required in this General Order; and • Comply with subsequent Audit requirements and due dates corresponding with the original audit cycle.

3.11. Sewer System Management Plan Reporting Requirements For an Existing Enrollee previously regulated by Order 2006-0003-DWQ: Within every six (6) years after the required due date of its last Plan Update, the Legally Responsible Official shall upload and certify a local governing entity-approved Sewer System Management Plan Update to the online CIWQS Sanitary Sewer System Database. If the electronic document format or size capacity prevents the electronic upload of the Plan, the Legally Responsible Official shall report an electronic link to its updated Sewer System Management Plan posted on its own website.

Order 2006-0003-DWQ required each enrollee to develop its initial Sewer System Management Plan per the following schedule, with required Plan updates at a frequency of 5-years thereafter:

Systems serving populations: Greater than 100,000: May 2, 2009 Between 100,000 and 10,000: August 2, 2009
Between 10,000 and 2,500: May 2, 2010
Less than 2,500: August 2, 2010
STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E1 – NOTIFICATION, MONITORING, REPORTING
AND RECORDKEEPING REQUIREMENTS December 6, 2022
E1 - 20
This Order carries forth the previously-required Plan Update schedule per Order 2006-0003-DWQ. Per the six-year Plan Update frequency required in this Order, the Enrollee shall upload and certify its first Plan Update, to the online CIWQS Sanitary Sewer System Database by the following due dates, with subsequent Plan Updates at the frequency of six years thereafter:

Systems serving populations: Greater than 100,000: May 2, 2025 Between 100,000 and 10,000: August 2, 2025
Between 10,000 and 2,500: May 2, 2026
Less than 2,500: August 2, 2026
For a New Enrollee: Within twelve (12) months of its Application for Enrollment Approval date, the Legally Responsible Official of a new Enrollee shall upload and certify a local governing entity-approved Sewer System Management Plan to the online CIWQS Sanitary Sewer System Database. If electronic document format or size capacity prevents the electronic upload of the Plan, the Legally Responsible Official shall report an electronic link to its Sewer System Management Plan posted on its own website. The due date for subsequent 6-year Plan updates, is six (6) years from the submittal due date of the new Enrollee’s first Sewer System Management Plan.

4. RECORDKEEPING REQUIREMENTS
The Enrollee shall maintain records to document compliance with the provisions of this General Order, and previous General Order 2006-0003-DWQ as applicable, for each sanitary sewer system owned, including any required records generated by an Enrollee’s contractor(s).

4.1. Recordkeeping Time Period
The Enrollee shall maintain records of documents required in this Attachment, including records collected for compliance with this General Order, and records collected in accordance with previous General Order 2006-0003-DWQ, for five (5) years.

4.2. Availability of Documents
The Enrollee shall make the records required in this General Order readily available, either electronic or hard copies, for review by Water Board staff during onsite inspections or through an information request.

4.3. Spill Reports
The Enrollee shall maintain records for each of the following spill-related events and activities:
• Spill event complaint, including but not limited to records documenting how the Enrollee responded to notifications of spills. Each complaint record must, at a minimum, include the following information:
o Date, time, and method of notification,
STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E1 – NOTIFICATION, MONITORING, REPORTING
AND RECORDKEEPING REQUIREMENTS December 6, 2022
E1 - 21
o Date and time the complainant first noticed the spill, if available, o Narrative description of the complaint, including any information the caller provided regarding whether the spill has reached surface waters or a drainage conveyance system, if available,
o Complainant’s contact information, if available, and
o Final resolution of the complaint;
• Records documenting the steps and/or remedial action(s) undertaken by the Enrollee, using all available information, to comply with this General Order, and previous General Order 2006-0003-DWQ as applicable;
• Records documenting how estimate(s) of volume(s) and, if applicable, volume(s) of spill recovered were calculated;
• All California Office of Emergency Services notification records, as applicable; and • Records, in accordance with the Monitoring Requirements in this Attachment.

4.4. Recordkeeping of Category 4 Spills and Non-Category 1 Lateral Spills An Enrollee must maintain the following records for each individual Category 4 spill and for each individual non-Category 1 Enrollee-owned and/or operated lateral spill, and report in accordance to section 3.6 (Annual Certified Spill Reporting of Category 4 and/or Lateral Spills) of this Attachment.

Recordkeeping of Individual Category 4 Spill Information:

1. Contact information: Name and telephone number of Enrollee contact person to respond to spill-specific questions;

2. Spill location name;

3. Description and GPS coordinates for the system location where the spill originated;

4. Did the spill reach a drainage conveyance system? If Yes:
o Description of drainage conveyance system location,
o Estimated spill volume fully recovered within the drainage conveyance system, and
o Estimated spill volume remaining within the drainage conveyance system;

5. Estimated total spill volume exiting the sanitary sewer system;

6. Spill date and start time;

7. Spill cause(s) (for example, root intrusion, grease deposition, etc.);

8. System failure location (for example, main, pump station, etc.);

9. Description of spill response activities including description of immediate spill containment and cleanup efforts;

10. Description of how the volume estimation was calculated, including, at minimum:

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E1 – NOTIFICATION, MONITORING, REPORTING
AND RECORDKEEPING REQUIREMENTS December 6, 2022
E1 - 22
o The methodology and type of data relied upon, including supervisory control and data acquisition (SCADA) records, flow monitoring or other telemetry information used to estimate the volume of the spill discharged, and the volume of the spill recovered (if any volume of the spill was recovered), and o The methodology and type of data relied upon to estimate the spill start time, on- going spill rate at time of arrival (if applicable), and the spill end time;

11. Description of implemented system modifications and operating/maintenance modifications.

Recordkeeping of Individual Lateral Spill Information:

1. Date and time the Enrollee was notified of, or self-discovered, the spill;

2. Location of individual spill;

3. Estimated individual spill volume;

4. Spill cause(s) (for example, root intrusion, grease deposition, etc.); and

5. Description of how the volume estimations were calculated.

Total Annual Spill Information:

1. Estimated total annual spill volume;

2. Description of spill corrective actions, including at minimum:
o Local regulatory enforcement action taken against the sewer lateral owner in response to a spill, as applicable, and
o System operation, maintenance and program modifications implemented to prevent repeated spill occurrences at the same spill location.

4.5. Sewer System Telemetry Records
The Enrollee shall maintain the following sewer system telemetry records if used to document compliance with this General Order, and previous General Order 2006-0003-DWQ as applicable, including spill volume estimates:
• Supervisory control and data acquisition (SCADA) system(s); • Alarm system(s);
• Flow monitoring device(s) or other instrument(s) used to estimate sewage flow rates, and/or volumes;
• Computerized maintenance management system records; and • Asset management-related records.

4.6. Sewer System Management Plan Implementation Records The Enrollee shall maintain records documenting the Enrollee’s implementation of its Sewer System Management Plan, including documents supporting its Sewer System Management Plan audits, corrections, modifications, and updates to the Sewer System Management Plan.

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E1 – NOTIFICATION, MONITORING, REPORTING
AND RECORDKEEPING REQUIREMENTS December 6, 2022
E1 - 23

4.7. Audit Records
The Enrollee shall maintain, at minimum, the following records pertaining to its Sewer System Management Plan audits, and other internal audits:
• Completed audit documents and findings;
• Name and contact information of staff and/or consultants that conducted or involved in the audit; and
• Follow-up actions based on audit findings.

4.8. Equipment Records
The Enrollee shall maintain a log of all owned and leased sewer system cleaning, operational, maintenance, construction, and rehabilitation equipment.

4.9. Work Orders
The Enrollee shall maintain record of work orders for operations and maintenance projects.

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E2 – SUMMARY TABLES FOR NOTIFICATION, December 6, 2022

MONITORING AND REPORTING REQUIREMENTS
E2 - 1
ATTACHMENT E2 – SUMMARY OF NOTIFICATION, MONITORING AND REPORTING

REQUIREMENTS
This Attachment provides a summary of notification, monitoring and reporting requirements, by spill category, and for Enrollee-owned and/or operated laterals as required in Attachment E1 of this General Order, for quick reference purposes only.

Table E2-1
Spill Category 1: Spills to Surface Waters
Spill
Requirement Due Method
Notification
Within two (2) hours of the Enrollee’s knowledge of
a Category 1 spill of 1,000 gallons or greater,
discharging or threatening to discharge to surface
waters:

Notify the California Office of Emergency Services
and obtain a notification control number.

California Office
of Emergency
Services at:
(800) 852-7550
(Section 1 of
Attachment E1)
Monitoring
• Conduct spill-specific monitoring;
• Conduct water quality sampling of the receiving
water within 18 hours of initial knowledge of spill of
50,000 gallons or greater to surface waters.
(Section 2 of
Attachment E1)
Reporting
• Submit Draft Spill Report within three (3)
business days of the Enrollee’s knowledge of the
spill;
• Submit Certified Spill Report within 15 calendar
days of the spill end date;
• Submit Technical Report within 45 calendar days
after the spill end date for a Category 1 spill in
which 50,000 gallons or greater discharged to
surface waters; and
• Submit Amended Spill Report within 90 calendar
days after the spill end date.
(Section 3.1 of
Attachment E1)

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E2 – SUMMARY TABLES FOR NOTIFICATION, December 6, 2022

MONITORING AND REPORTING REQUIREMENTS
E2 - 2
Table E2-2
Spill Category 2: Spills of 1,000 Gallons or Greater That Do Not Discharge to Surface Waters
Spill
Requirements Due Method
Notification
Within two (2) hours of the Enrollee’s knowledge of
a Category 2 spill of 1,000 gallons or greater,
discharging or threatening to discharge to waters of
the State:

Notify California Office of Emergency Services and
obtain a notification control number.

California Office of
Emergency
Services at: (800)
852-7550
(Section 1 of
Attachment E1)
Monitoring Conduct spill-specific monitoring. (Section 2 of Attachment E1)
Reporting
• Submit Draft Spill Report within three (3)
business days of the Enrollee’s knowledge of the
spill;
• Submit Certified Spill Report within 15 calendar
days of the spill end date; and
• Submit Amended Spill Report within 90 calendar
days after the spill end date.
(Section 3.2 of
Attachment E1)

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E2 – SUMMARY TABLES FOR NOTIFICATION, December 6, 2022

MONITORING AND REPORTING REQUIREMENTS
E2 - 3
Table E2-3
Spill Category 3: Spills of Equal or Greater than 50 Gallons and Less than 1,000 Gallons That Does Not Discharge to Surface Waters
Spill
Requirements Due Method
Notification Not Applicable Not Applicable
Monitoring Conduct spill-specific monitoring. (Section 2 of Attachment E1)
Reporting
• Submit monthly Certified Spill Report to the online
CIWQS Sanitary Sewer System Database within
30 calendars days after the end of the month in
which the spills occur; and
• Submit Amended Spill Reports within 90 calendar
days after the Certified Spill Report due date.
(Section 3.3 and 3.5 of
Attachment E1)
Table E2-4
Spill Category 4: Spills Less Than 50 Gallons That Do Not Discharge to Surface Waters Spill
Requirements Due Method
Notification Not Applicable Not Applicable
Monitoring Conduct spill-specific monitoring. (Section 2 of Attachment E1)
Reporting
• If, during any calendar month, Category 4 spills
occur, certify monthly, the estimated total spill
volume exiting the sanitary sewer system, and the
total number of all Category 4 spills into the online
CIWQS Sanitary Sewer System Database, within
30 days after the end of the calendar month in
which the spills occurred.
• Upload and certify a report, in an acceptable digital format, of all Category 4 spills to the online CIWQS
Sanitary Sewer System Database, by February 1st
after the end of the calendar year in which the
spills occur.
(Section 3.4, 3.6, 3.7
and 4.4 of Attachment
E1)

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E2 – SUMMARY TABLES FOR NOTIFICATION, December 6, 2022

MONITORING AND REPORTING REQUIREMENTS
E2 - 4
Table E2-5
Enrollee Owned and/or Operated Lateral Spills That Do Not Discharge to Surface Waters Spill
Requirements Due Method
Notification
Within two (2) hours of the Enrollee’s knowledge of a
spill of 1,000 gallons or greater, from an enrollee-
owned and/or operated lateral, discharging or
threatening to discharge to waters of the State:

Notify California Office of Emergency Services and
obtain a notification control number.

Not applicable to a spill of less than 1,000 gallons.

California Office of
Emergency Services
at: (800) 852-7550

(Section 1 of Attachment
E1)
Monitoring Conduct visual monitoring. (Section 2 of Attachment E1)
Reporting
• Upload and certify a report, in an acceptable digital format, of all lateral spills (that do not discharge to a surface water) to the online CIWQS Sanitary
Sewer System Database, by February 1st after the
end of the calendar year in which the spills occur.
• Report a lateral spill of any volume that discharges
to a surface water as a Category 1 spill.
(Sections 3.6, 3.7 and

4.4 of Attachment E1)

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT F – REGIONAL WATER QUALITY CONTROL December 6, 2022

BOARD CONTACT INFORMATION
F - 1

ATTACHMENT F – REGIONAL WATER QUALITY CONTROL BOARD CONTACT

INFORMATION
This Attachment provides a map, list of counties, and contact information to assist the Enrollee in identifying the corresponding Regional Water Quality Control Board office, for all Regional Water Board notification requirements in this General Order.

Region 1 -- North Coast Regional Water Quality Control Board:

Del Norte, Glenn, Humboldt, Lake, Marin, Mendocino, Modoc, Siskiyou, Sonoma, and Trinity counties.

[email protected] or (707) 576-2220
Region 2 -- San Francisco Bay Regional Water Quality Control Board:

Alameda, Contra Costa, San Francisco, Santa Clara (Northern most part of Morgan Hill), San Mateo, Marin, Sonoma, Napa, Solano counties.

[email protected] or (510) 622-2369
Region 3 -- Central Coast Regional Water Quality Control Board:

Santa Clara (most of Morgan Hill), San Mateo (Southern portion), Santa Cruz, San Benito, Monterey, Kern (small portions), San Luis Obispo, Santa Barbara, Ventura (Northern portion) counties.

[email protected] or (805) 549-3147
Region 4 -- Los Angeles Regional Water Quality Control Board:

Los Angeles, Ventura counties (small portions of Kern and Santa Barbara counties). [email protected] or (213) 576-6600

STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT F – REGIONAL WATER QUALITY CONTROL December 6, 2022

BOARD CONTACT INFORMATION
F - 2

Region 5 -- Central Valley Regional Water Quality Control Board:

Rancho Cordova (Sacramento) Office: Colusa, Lake, Sutter, Yuba, Sierra, Nevada, Placer, Yolo, Napa, (North East), Solano (West), Sacramento, El Dorado, Amador, Calaveras, San Joaquin, Contra Costa (East), Stanislaus, Tuolumne counties.

[email protected] or (916) 464-3291 Fresno Office: Fresno, Kern, Kings, Madera, Mariposa, Merced, and Tulare counties, and small portions of San Benito and San Luis Obispo counties.

[email protected] or (559) 445-5116 Redding Office: Butte, Glen, Lassen, Modoc, Plumas, Shasta, Siskiyou, and Tehama counties.

[email protected] or (530) 224-4845 Region 6 -- Lahontan Regional Water Quality Control Board:

Lake Tahoe Office: Alpine, Modoc (East), Lassen (East side and Eagle Lake), Sierra, Nevada, Placer, El Dorado counties.

[email protected] or (530) 542-5400 Victorville Office: Mono, Inyo, Kern (East), San Bernardino, Los Angeles (North East corner) counties.

[email protected] or (760) 241-6583 Region 7 -- Colorado River Basin Regional Water Quality Control Board:

Imperial county and portions of San Bernardino, Riverside, San Diego counties.

[email protected] or (760) 346-7491
Region 8 -- Santa Ana Regional Water Quality Control Board:

Orange, Riverside, San Bernardino counties.

[email protected] or (951) 782-4130
Region 9 -- San Diego Regional Water Quality Control Board:

San Diego county and portions of Orange and Riverside counties.

[email protected] or (619) 516-1990

End of Order 2022-0103-DWQ
City of Manhattan Beach SSMP

75 Appendix B – Vacant
City of Manhattan Beach SSMP

91 Appendix C - Vacant

City of Manhattan Beach SSMP

95 Appendix D – SSMP Sample Change Log

City of Manhattan Beach Sewer System Management Plan Change Log

Date SSMP
Element/Location
Description of Change/Revision
Made
Change
Authorized By:
6/27/2025 Title Page
Added City WDID, date updated.

Jeffrey Page
6/27/2025 Table of Contents
Updated section titles and page
numbers to reflect updated document. Jeffrey Page
6/27/2025 Abbreviations
Added newly identified abbreviations.

Jeffrey Page
6/27/2025 Figures, Tables and
References
Updated appendix, figures and tables
titles to reflect the 2025 update Jeffrey Page
6/27/2025 All Sections
Replaced “SSO” terminology with “spill”
as applicable throughout the document
to reflect the terminology of the 2022
Order.

Jeffrey Page
6/27/2025 All Sections
Minimum requirements section
throughout the document updated to be
consistent with the 2022 Order.

Jeffrey Page
6/27/2025 Definitions
Added definitions for LRO, lateral, &
Waters of the US. Updated definitions
for MRP, SSO (Spill), Spill Category 3,
& Wastewater Collection System.

Jeffrey Page
6/27/2025 Background
Removed reference to revisions based
upon 2013 MRP Amendment. Added
reference to 2022 Order and related
requirements. Updated internal audit
dates and areas of concern.

Jeffrey Page
6/27/2025 Chapter 1 - Goals
Updated section and subsections per
the 2022 Order. Jeffrey Page
6/27/2025

1.2 - Sewer System
Management Plan Update
Schedule
Schedule added to subsection.

Jeffrey Page
6/27/2025

1.3 – City Service Area
and Sewer System Asset
Overview
Updated to include unique service
boundary challenges and the number of
residential, commercial, and industrial
service connections in the city of
13,251.

Jeffrey Page
6/27/2025 1.6 - References
References to Order updated
Jeffrey Page
6/27/2025 Chapter 2 - Organization
Updated section and subsections per
the 2022 Order. Jeffrey Page
City of Manhattan Beach SSMP

96 6/27/2025 2.2 – Legally Responsible
Official
LRO updated to Jeffrey Page.

Jeffrey Page
6/27/2025 2.3 - Management and
Organizational Structure
Figure 1 staff and titles updated. Table 1
contact information updated Jeffrey Page
6/27/2025 External Reporting Flow
Chart
Updated per 2022 Order requirements.

Jeffrey Page
6/27/2025 Chapter 3 – Legal
Authority
Updated section and subsections per
the 2022 Order. Jeffrey Page
6/27/2025

3.4 – Design,
Construction, and
Installation Requirements
Updated numbering system of the
Sewer connection Special Plans and
Specifications. Inserted reference to
Code of Ordinance Title 5– Sanitation
and Health Chapter 5.36 – Sewer,
Sewage Disposal – City Sewage
System.

Jeffrey Page
6/27/2025 3.5 – Lateral Maintenance
Access
Inserted reference to Code of Ordinance
Title 5– Sanitation and Health Chapter

5.36 – Sewer, Sewage Disposal – City
Sewage System.

Jeffrey Page
6/27/2025

3.6 – Fats, Oils, and
Grease Discharge
Limitations
Inserted reference to Code of Ordinance
, Title 5 – Sanitation and Health Chapter

5.38 – Fats, Oils and Grease
Management and Discharge Control.

Jeffrey Page
6/27/2025 3.8 – Enforcement
Provisions
Inserted Reference to Code of
Ordinance , Title 5 – Sanitation and
Health Chapter 5.38 – Fats, Oils and
Grease Management and Discharge
Control.

Jeffrey Page
6/27/2025 3.9 – Easement
Accessibility Agreements
Added subsection and reference
Chapter 5.38.120 of the Municipal
Code.

Jeffrey Page
6/27/2025 Table 3 – Legal Authority
Checklist
Updated per 2022 Order and code
reference. Jeffrey Page
6/27/2025 Chapter 4 – Operation
and Maintenance Program
Updated section and subsections per
the 2022 Order, including the MRP
requirements.

Jeffrey Page
6/27/2025 Chapter 5 – Design and
Performance Provisions
Updated section and subsections per
the 2022 Order. Jeffrey Page
6/27/2025
Chapter 6 – Spill
Emergency Response
Program
Updated section and subsections per
the 2022 Order, including updated spill
categories.

Jeffrey Page
6/27/2025 6.3 – Spill Emergency
Response Plan
Included language regarding
notification procedures and post-spill
assessment.

Jeffrey Page
6/27/2025 7 – Sewer Pipe Blockage
Control Program
Updated section and subsections per
the 2022 Order. Legal authority
references updated.

Jeffrey Page
City of Manhattan Beach SSMP

97 6/27/2025

7.6 - Authority for
Inspection of Grease
Producing Facilities, to
Enforcement, and
Evidence of Adequate
Staffing to Inspect and
Enforce the FOG
Ordinance
Language added regarding authority to
inspect and sample wastewater
discharges.

Jeffrey Page
6/27/2025
8 – System Evaluation
and Capacity Assurance
and Capital Improvements
Updated section and subsections per
the 2022 Order. Jeffrey Page
6/27/2025

8.2 - System Evaluation
and Condition
Assessment
CCTV assessment goals were added
and language added to address assets
vulnerable to climate change. Reference
to the 2008 to 2012 condition
assessment was added.

Jeffrey Page
6/27/2025

8.3 – Capacity
Assessment and Design
Criteria
Language was added regarding future
consideration of design capacities and
regarding infiltration and inflow during
storm events and other climate related
influences.

Jeffrey Page
6/27/2025 8.4 – Prioritization of
Corrective Actions
Section added, referencing the used of
assessments to inform corrective
actions.

Jeffrey Page
6/27/2025 8.6 – Completion
Schedule
Removed FY 10/11, 11/12, 12/13 CIP.

Referenced 2026-2030 CIP and
associated projects.

Jeffrey Page
6/27/2025 8.7 – References
Updated CIP Link
Jeffrey Page
6/27/2025
9- Monitoring,
Measurement, and
Program Modifications
Updated section and subsections per
the 2022 Order. Jeffrey Page
6/27/2025 9.2 - Information
Maintenance
Updated frequency of sewer
maintenance. Jeffrey Page
6/27/2025 10 – SSMP Program
Audits
Updated section and subsections per
the 2022 Order. Jeffrey Page
6/27/2025 10.4 Self-monitoring and
Plan Modification
Manhole inspection frequency changed
to annually. Jeffrey Page
6/27/2025 11 – Communication
Program
Updated section and subsections per
the 2022 Order. Jeffrey Page
6/27/2025 11.2 – Public
Communication
Language added regarding FOG
inspection outreach protocols. Jeffrey Page
6/27/2025 Appendix A
Replaced with State Water Resources
Control Board Order No. 2022-0103-
2006-003-DWQ Statewide General
WDR For Sanitary Sewer Systems
Jeffrey Page
6/27/2025 Appendix B
Removed State Water Resources
Control Board Order No. 2013-0058-
EXEC Amending Monitoring and
Jeffrey Page
City of Manhattan Beach SSMP

98 reporting Program for statewide General
WDR for Sanitary Sewer Systems as it
is outdated and updated in the 2022
Order. Replaced title of appendix with
“Vacant” as a placeholder for a future
appendix, should it be needed.
6/27/2025 Appendix C
Removed Fact sheet Amending
Monitoring and reporting Program for
Statewide General WDR for Sanitary
Sewer Systems as it is outdated
.Replaced title of appendix with “Vacant”
as a placeholder for a future appendix,
should it be needed.

Jeffrey Page
Jeffrey Page
6/27/2025 Appendix I
Updated Extra Attention Lines
Jeffrey Page
6/27/2025 Appendix 8
Hot Spot List and SSO records were
updated Jeffrey Page
6/27/2025 Appendix 9
Updated to included references to new
CIP list. Jeffrey Page
6/27/2025 Appendix 10
Updated to include Resolution No.

24.0066 Jeffrey Page
6/27/2025 Appendix 11
Updated with 2026-2030 CIP
Jeffrey Page
6/27/2025 Appendix 13
Spills Maps and Report updated with
recent spill data. Jeffrey Page
Updated with 2024 Self Audit Report
6/27/2025 Appendix E
City of Manhattan Beach SSMP

99 Appendix E – Self-Audit

Sewer System Management Plan (SSMP)
Internal Audit

Introduction

The City of Manhattan Beach ( The City) Sewer System is subject to permitting requirements under the Statewide General Waste Discharge Requirement for Sanitary Sewer Systems (WDR SSS). The State Water Resources Control Board (SWRCB) issued Order No. WQ 2022-0103-DWQ to mitigate the potential impact of sanitary sewer overflows ( SSOs) on public health and the environment. The WRO SSS applies to all public collection system agencies in California that own and operate collection systems. The City is subject to permitting requirements under the WRO SSS, and is required to prepare a Sewer System Management Plan (SSMP) every five (5) years. Its principal elements include how the municipality operates and maintains the collection system and procedures for reporting all Sanitary Sewer Overflows (SSOs) to the California Integrated Water Quality System (CIWQS) online database, aiming to minimize SSOs.

Background

The City sanitary sewer system comprises 431,083 ft. of gravity sewer mains ranging in size from 6in to 21in and 5,114 ft. of 6in force mains diameter, eight pump stations, and 2,086 sewer maintenance holes. The table below summarizes The City Collection System.

Collections System Overview
Gravity Sewer Mains 431,083 ft.

Force Mains 5,114 ft.

Sewer Pump Lift Stations 8
Docusign Envelope ID: 8CC43AAC-36F8-4B8F-8A39-309A36EE3FBD

SSMP Internal Audit Overview

Section 10 of the WRD SSS requires The City to conduct internal audits every three (3) years. The audit focuses on evaluating the plan's effectiveness, compliance with its program elements, identifying steps to correct any deficiencies, and implementing programs as stated in the SSMP. The City has performed its first audit in 2022. This report summarizes the results of The City's internal audit for 2022-2024. It is important to note that the current version of the SSMP is nearing the end of its 5-year lifespan. In 2022, a new SSMP was completed to cover 2022-2027. Therefore; some of the discussion may provide recommendations on how the new SSMP could be improved to reflect different aspects of The City program.

The 2024 internal audit addresses the compliance status, effectiveness, deficiencies and recommendations for the following sections of the SSMP:

1. The City’s SSMP Goals.

2. The City’s Organization Structure.

3. The City’s Legal Authority.

4. The City’s Operation and Maintenance Activities.

5. The City’s Design and Performance Provisions.

6. The City’s Overflow Emergency Response Program (OERP).

7. Fats, Oils, and Grease (FOG) Control Program.

8. The City’s System Evaluation & Capacity Analysis Plan (SECAP).

9. The City’s Monitoring, Measurement, and Program Modifications.

10. The City’s SSMP Program Audits.

11. The City’s Communication Program.

Audit of Section 1. Goals

The City has defined the following nine goals in the SSMP:

1. Minimize sanitary sewer overflows.

2. Prevent public health hazards.

3. Minimize inconveniences by responsibly handling interruptions in service.

4. Protect the large investment in the collection system by maintaining adequate capacities and extending useful life.

5. Prevent unnecessary damage to public and private property.

6. Use funds available for sewer operations in the most efficient manner.

7. Convey wastewater to treatment facilities with a minimum of infiltration, inflow and exfiltration.

8. Provide adequate capacity to convey peak flows.

9. Perform all operations in a safe manner to avoid personal injury and property damage.

Compliance Status
The City is compliant with requirements 1) through 9) on this section.

Effectiveness
The stated goals are meant to concentrate efforts on minimizing occurrences of SSO events, as well as mitigation their impact on public health and the environment

Deficiencies and Recommendations
No deficiencies have been identified with this element of the SSMP.

Docusign Envelope ID: 8CC43AAC-36F8-4B8F-8A39-309A36EE3FBD

Audit of Section 2. Organization

According to State Water Resources Control Board Order No. WQ 2022-0103-DWQ item 2, the SSMP must identify the:

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

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

• Organizational lines of authority; and

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

Compliance Status
The City is compliant with the requirements in this section.

Effectiveness
The organizational structure clearly identifies lines of authority as well as the key positions responsible for implementing specific measures in the SSMP. The chain of communication for reporting SSOs is also provided.

Deficiencies and Recommendations
The City has gone through a significant amount of staff turnover. Thus, the current organization is different from what it was when the 2017 SSMP was written, names and phone numbers need to be updated. The SSO Reporting Chain of Communication has not changed.

Audit of Section 3. Legal Authority

According to State Water Resources Control Board Order No. WQ 2022-0103-DWQ Item 3, The Plan must include copies or an electronic link to The City's current sewer system use ordinances, service agreements and/or other legally binding procedures to demonstrate The City possesses the necessary legal authority to:

• Prevent illicit discharges into its sanitary sewer system from inflow and infiltration (I&I); unauthorized stormwater; chemical dumping; unauthorized debris; roots; fats, oils, and grease; and trash, including rags and other debris that may cause blockages; • Collaborate with storm sewer agencies to coordinate emergency spill responses, ensure access to storm sewer systems during spill events, and prevent unintentional cross connections of sanitary sewer infrastructure to storm sewer infrastructure; • Require that sewer system components and connections be properly designed and constructed;
• Ensure access for maintenance, inspection, and/or repairs for portions of the service lateral owned and/or operated by The City;
• Enforce any violation of its sewer ordinances, service agreements, or other legally binding procedures; and
Docusign Envelope ID: 8CC43AAC-36F8-4B8F-8A39-309A36EE3FBD

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

Compliance Status
The City is compliant with requirements a) through e) on this section.

Effectiveness
The City’s legal authority is derived through the City Council. The rules and regulations that govern the Sewer Collection System can be found within several ordinances within the City of Manhattan Beach Municipal Code. Please reference Table 3 – Legal Authority Checklist in the 2022 SSMP

Deficiencies and Recommendations
The section of the SSMP has no significant deficiencies and is generally satisfactory.

Audit of Section 4. Operation and Maintenance

The SSMP Plan must include the items listed below that are appropriate and applicable to The City’s system.

Collections System Mapping
Maintain an up- to-date map of the sanitary sewer system, and procedures for maintaining and providing State and Regional Water Board staff access to the map. The map must show gravity line segments and manholes, pumping facilities, pressure pipes and valves, and applicable stormwater conveyance facilities within the sewer system service area boundaries.

Compliance Status
The City is compliant with the requirements of this section.

Effectiveness
The City uses a Geographic Information System (GIS) to manage its database of extensive information about the sanitary sewer network. This includes attribute data for mains, laterals, manholes, and pump stations. Maps of non- sanitary sewer elements include water, storm drain, street , county trunk sewer, and other underground utility data. Maps are routinely updated with new information.

Deficiencies and Recommendations
No deficiencies found

Routine and Preventive Maintenance Program
Describe routine preventive operation and maintenance activities by staff and contractors; including a system for scheduling regular maintenance and cleaning of the sanitary sewer system with more frequent cleaning and maintenance targeted at known problem areas. The Preventative Maintenance (PM) program should have a system to document scheduled and conducted activities, such as work orders.

Compliance Status
The City is not fully compliant with this section.

Effectiveness
The problem sewers are identified, prioritized and scheduled for maintenance based on a comprehensive review of the maintenance history and system characteristics of the sewer system including overflows, blockages, age, material and condition. Maintenance includes Docusign Envelope ID: 8CC43AAC-36F8-4B8F-8A39-309A36EE3FBD

high velocity sewer cleaning, vacuuming and manual rodding. The power systems are start tested weekly by staff, and undergo motor and generator servicing bi-annually by Power Plus, Inc. The back-up generator is tested by running it once per month under no -load conditions, in compliance with local Air Quality Management District regulations.

Deficiencies and Recommendations
The City has had challenges in meeting Cleaning and CCTV mileage goals as the Sewer Section has not had the manpower to achieve its productivity goals. The City started utilizing the CCTV in late 2024 and do not have a full year's data to include at the time of this report.

Cleaning*
2022 2023 2024
Goal (miles) 163.3 163.3 163.3
Actual (miles) 119.23 146.09 84.85
% of Goal 66% 57% 52%
*Does not include miles from repeat cleaning

Another program enhancement has been better targeting of trouble areas or sewer "hot spots." These are areas in the sewer system known to be difficult to maintain, such as high- grease areas, or segments containing siphons. Sewer staff has experimented with different frequency intervals to find the ideal schedule for repeat cleaning activities. Continued analysis of these frequencies is recommended for optimal distribution of labor and equipment resources.

Rehabilitation and Replacement Plan
Develop rehabilitation and replacement plan to identify and prioritize system deficiencies and implement short-term and long-term rehabilitation actions to address each deficiency. The program should include regular visual and TV inspections of manholes and sewer pipes, and a system for ranking the condition of sewer pipes and scheduling rehabilitation. Rehabilitation and replacement should focus on sewer pipes that are at risk of collapse or prone to more frequent blockages due to pipe defects. Finally, the rehabilitation and replacement plan should include a capital improvement plan that addresses proper management and protection of the infrastructure assets. The plan shall include a time schedule for implementing the short and long term plans plus a schedule for developing the funds needed for the capital improvement plan.

Compliance Status
The City is compliant with this section.

Effectiveness
The Sewer Capital Improvement Plan (CIP) targets segments of sewer system infrastructure that are at highest risk of failure.

Deficiencies and Recommendations
The City last updated the Sewer Master Plan in 2010. An update to the Master Plan will occur in 2025.

Staff and Contractor Training
According to State Water Resources Control Board Order No. WQ 2022-0103-DWQ Item 4.3, in-house and external training provided on a regular basis for sanitary sewer system operations and maintenance staff and contractors. The training must cover:

Docusign Envelope ID: 8CC43AAC-36F8-4B8F-8A39-309A36EE3FBD

• The requirements of this General Order;
• The City’s Spill Emergency Response Plan procedures and practice drills; • Skilled estimation of spill volume for field operators; and • Electronic CIWQS reporting procedures for staff submitting data.

Compliance Status
The City is compliant with the requirements of this section.

Effectiveness
Sewer Maintenance Workers are trained to properly operate and maintain all major wastewater equipment and facilities. Every staff member receives periodic formal safety training in confined space entry, trench shoring, traffic control, heat illness , and hazardous material management.

Deficiencies and Recommendations
N/A

Equipment and Replacement Part Inventory
Provide equipment and replacement part inventories, including identification of critical replacement parts.

Compliance Status
The City is compliant with this element of the O&M section.

Effectiveness
Sufficient inventory of critical equipment and replacement parts is maintained at all times.

Deficiencies and Recommendations
N/A

Audit of Section 5. Design and Performance Provisions

According to State Water Resources Control Board Order No. WQ 2022-0103-DWQ Item 5, The Plan must include the following items as appropriate and applicable to the City’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

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

Compliance Status
The City is compliant with requirements of this section.

Docusign Envelope ID: 8CC43AAC-36F8-4B8F-8A39-309A36EE3FBD

Effectiveness
A civil engineer designs each project and each project has its own custom specification written for the construction of that specific project.

Deficiencies and Recommendations
N/A

Audit of Section 6. Spill Emergency Response Plan

• The Plan must include an up to date Spill Emergency Response Plan to ensure prompt detection and response to spills to reduce spill volumes and collect information for prevention of future spills. The Spill Emergency Response Plan must include procedures to: Notify primary responders, appropriate local officials, and appropriate regulatory agencies of a spill in a timely manner;
• Notify other potentially affected entities (for example, health agencies, water suppliers, etc.) of spills that potentially affect public health or reach waters of the State; • Comply with the notification, monitoring and reporting requirements of this General Order, State law and regulations, and applicable Regional Water Board Orders; • Ensure that appropriate staff and contractors implement the Spill Emergency Response Plan and are appropriately trained;
• Address emergency system operations, traffic control and other necessary response activities;
• Contain a spill and prevent/minimize discharge to waters of the State or any drainage conveyance system;
• Minimize and remediate public health impacts and adverse impacts on beneficial uses of waters of the State;
• Remove sewage from the drainage conveyance system;
• Clean the spill area and drainage conveyance system in a manner that does not inadvertently impact beneficial uses in the receiving waters; • Implement technologies, practices, equipment, and interagency coordination to expedite spill containment and recovery;
• Implement pre-planned coordination and collaboration with storm drain agencies and other utility agencies/departments prior to, during, and after a spill event; • Conduct post-spill assessments of spill response activities; • Document and report spill events as required in this General Order; and • Annually, review and assess effectiveness of the Spill Emergency Response Plan, and update the Plan as needed.

Compliance Status
The City is compliant with the requirements listed in this section of the SSMP.

Effectiveness
The City of Manhattan Beach Utilities Division maintains an up- to-date Sanitary Sewer Overflow Response Plan as mandated by the State Water Resources Control Board, which the City follows to provide formal notice to the Los Angeles County Department of Health (LACDH) and the Office of Emergency Services (OES). The City encourages citizens to report overflows to the Utilities Division via the Public Works Department (business hours) and the Regional Communication Center (after -hours). Sewer staff is available 24 hours per day, seven days per week to receive and respond to calls, regardless of whether they originate on public or private property. There is a complaint phone log maintained of all calls. Once verified, all sewer overflows regardless of volume or potential im pact are reported to all parties in the chain of communication within the City and to the appropriate regulatory agencies.

Docusign Envelope ID: 8CC43AAC-36F8-4B8F-8A39-309A36EE3FBD

Deficiencies and Recommendations
N/A

Audit of Section 7. Sewer Pipe Blockage Control Program

The Sewer System Management Plan must include procedures for the evaluation of The City’s service area to determine whether a sewer pipe blockage control program is needed to control fats, oils, grease, rags and debris. If The City determines that a program is not needed, The City shall provide justification in its Plan for why a program is not needed

The procedures must include, at minimum:

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

• A plan and schedule for the disposal of pipe-blocking substances generated within the sanitary sewer system service area. This may include a list of acceptable disposal facilities and/or additional facilities needed to adequately dispose of substances generated within a sanitary sewer system service area;

• The legal authority to prohibit discharges to the system and identify measures to prevent spills and blockages;

• Requirements to install grease removal devices (such as traps or interceptors), design standards for the removal devices, maintenance requirements, best management practices requirements, recordkeeping and reporting requirements;

• Authority to inspect grease producing facilities, enforcement authorities, and whether The City has sufficient staff to inspect and enforce the fats, oils, and grease ordinance;

• An identification of sanitary sewer system sections subject to fats, oils, and grease blockages and establishment of a cleaning schedule for each section; and

• Implementation of source control measures for all sources of fats, oils, and grease reaching the sanitary sewer system for each section identified above.

Compliance Status
The City is compliant with requirements of this section of the SSMP.

Effectiveness
The City utilizes a consultant to inspect and enforce FOG ordinances. Additionally, the City has the proper legal authority, permits and proper public outreach to comply with this section.

Deficiencies and Recommendations
N/A

Audit of Section 8: System Evaluation, Capacity Assurance, and Capital Improvements
Docusign Envelope ID: 8CC43AAC-36F8-4B8F-8A39-309A36EE3FBD

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.

System Evaluation and Condition Assessment

The Plan must include procedures to:
• Evaluate the sanitary sewer system assets utilizing the best practices and technologies available;

• Identify and justify the amount (percentage) of its system for its condition to be assessed each year;
• Prioritize the condition assessment of system areas that:
o Hold a high level of environmental consequences if vulnerable to collapse, failure, blockage, capacity issues, or other system deficiencies; o Are located in or within the vicinity of surface waters, steep terrain, high groundwater elevations, and environmentally sensitive areas; o Are within the vicinity of a receiving water with a bacterial -related impairment on the most current Clean Water Act section 303(d) List; • Assess the system conditions using visual observations, video surveillance and/or other comparable system inspection methods;

• Utilize observations/evidence of system conditions that may contribute to exiting of sewage from the system which can reasonably be expected to discharge into a water of the State; • Maintain documents and recordkeeping of system evaluation and condition assessment inspections and activities; and • Identify system assets vulnerable to direct and indirect impacts of climate change, including but not limited to: sea level rise; flooding and/or erosion due to increased storm volumes, frequency, and/or intensity; wildfires; and increased power disruptions.

Capacity Assessment and Design Criteria

The Plan must include procedures to identify system components that are experiencing or contributing to spills caused by hydraulic deficiency and/or limited capacity, including procedures to identify the appropriate hydraulic capacity of key system elements for:

• Dry-weather peak flow conditions that cause or contribute to spill events;

• The appropriate design storm(s) or wet weather events that cause or contribute to spill events; • The capacity of key system components; and

• Identify the major sources that contribute to the peak flows associated with sewer spills.

The capacity assessment must consider:

• Data from existing system condition assessments, system inspections, system audits, spill history, and other available information;

• Capacity of flood-prone systems subject to increased infiltration and inflow under Docusign Envelope ID: 8CC43AAC-36F8-4B8F-8A39-309A36EE3FBD

normal local and regional storm conditions;

• Capacity of systems subject to increased infiltration and inflow due to larger and/or higher-intensity storm events as a result of climate change;

• Increases of erosive forces in canyons and streams near underground and above- ground system components due to larger and/or higher-intensity storm events;

• Capacity of major system elements to accommodate dry weather peak flow conditions, and updated design storm and wet weather events; and

• Necessary redundancy in pumping and storage capacities.

Prioritization of Corrective Action

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

Capital Improvement Plan

The capital improvement plan must include the following items:

• Project schedules , including completion dates for all portions of the capital improvement program;

• Internal and external project funding sources for each project; and

• 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.

Compliance Status
The City is compliant with the requirements in this section.

Effectiveness
All information can be found in the 2022 Sewer Master Plan.

Deficiencies and Recommendations
N/A

Audit of Section 9. Monitoring, Measurement, and Program Modifications

The Plan must include an Adaptive Management section that addresses Plan implementation effectiveness and the steps for necessary Plan improvement, including:

• Maintaining relevant information, including audit findings, to establish and prioritize appropriate Plan activities;

• Monitoring the implementation and measuring the effectiveness of each Plan Element;

Docusign Envelope ID: 8CC43AAC-36F8-4B8F-8A39-309A36EE3FBD

• Assessing the success of the preventive operation and maintenance activities;

• Updating Plan procedures and activities, as appropriate, based on results of monitoring and performance evaluations; and

• Identifying and illustrating spill trends, including spill frequency, locations and estimated volumes.

Compliance Status
The City is compliant with this SSMP element.

Effectiveness
The City uses a variety of metrics to measure the effectiveness of different SSMP components.

Productivity standards for the Operation and Maintenance Program, for example, use footage/mileage goals for Cleaning and CCTV activities. Data is recorded for each crew daily.

Productivity can be assessed for time periods ranging from an hour to a year and for individuals or for the division. Data recorded in the field is compiled into an Access database and extracted into weekly, monthly, and yearly reports. SSO data is an important measure of sewer system performance. The frequency, location, and volume of SSOs are often used to determine how resources will be allocated. For example, Smart Cover® manhole lids have been strategically placed in areas of The City more prone to overflows. Data will also be used to recalibrate the frequency of cleaning activity for problem areas or sewer "hot spots." Sewer system management is regularly evaluated for effectiveness, and when needed, protocols are updated to produce more favorable outcomes.

Deficiencies and Recommendations
N/A

Audit of Section 10. Internal Audits

The Plan shall include internal audit procedures, appropriate to the size and performance of the system, for The City to comply with section 5.4 (Sewer System Management Plan Audits) of this General Order.

Compliance Status
The City in not compliant in this section however, we are currently in the process of conducting our first program audit and will continue to do so as required every three (3) years.

Effectiveness
N/A

Deficiencies and Recommendations
N/A

Audit of Section 11. Communication Program

The Plan must include procedures for The City to communicate with:
• The public for:

o Spills and discharges resulting in closures of public areas or that enter a source of drinking water, and
Docusign Envelope ID: 8CC43AAC-36F8-4B8F-8A39-309A36EE3FBD

o The development, implementation, and update of its Plan, including opportunities for public input to Plan implementation and updates.

• Owners/operators of systems that connect to The City’s system, including satellite systems, for System operation, maintenance, and capital improvement-related activities

Compliance Status
The City is compliant in this section.

Effectiveness
The City utilizes public outreach via the City website. Additionally, residents are notified prior to a project starting.

Deficiencies and Recommendations
N/A

Certification of Self-Audit

By signing below, we certify the information contained in this self-audit report is correct to the best of our knowledge.

Name Position Signature Date
Jeffrey Page Utilities Manager
Joel Velez Acting Wastewater Supervisor
Sandy Nimat Water Compliance Supervisor

Docusign Envelope ID: 8CC43AAC-36F8-4B8F-8A39-309A36EE3FBD 2/4/2025
2/4/2025
2/4/2025
City of Manhattan Beach SSMP

106
Appendix F – FOG Facilities

Site Name St Name St Suffix | St Direction St # | Unit
(New) Boa Steakhouse and Sushi Sepulveda Blvd | N 3110 | (New) Caffe Luxxe Manhattan Ave | 904 |
(New) Crafted Sweet 9th St | 860 |
(New) Culture Brewing Manhattan Beach Blvd | 327 |
(New) Dan Modern Chinese Sepulveda Blvd | N 3160 |
(New) Devil and Angel Sepulveda Blvd | N 3208 |
(New) Dunkin MB Sepulveda Blvd | N 1100 |
(New) Edible Arrangements Aviation Blvd | 1061 |
(New) Fete Bistro by Slay Manhattan Ave | 1017 |
(New) French Touch Sepulveda Blvd | N 3200 | D11
(New) Gelsons Market Sepulveda Blvd | N 707 |
(New) Global Cuisine by Gary
Arabia Rosecrans Ave | 1600 |
(New) Good Boy Bob, Inc. Highland Ave | 1300 |
(New) Growing Wild Highland Ave | 1201 |
(New) Handel's Ice Cream Sepulveda Blvd | 3360 |
(New) HiFi Espresso Manhattan Ave | 1025 |
(New) Ike's Love and Sandwiches Sepulveda Blvd | N 1116 | (New) Kreation Juicery Highland Ave | 1300 | 110
(New) Kreation Juicery Manhattan Beach Blvd | 451 | D118 (New) Live Oak Tavern Manhattan Beach Blvd | 124 |
(New) Manhattan Country Club Parkview Ave | 1330 |
(New) Mother's Market and Kitchen Rosecrans Ave | 1700 | C (New) Nando Trattoria Manhattan Ave | 1131 |
(New) Nawa Thai Highland Ave | 3713 |
(New) Nick and Sons Gourmet
Market Highland Ave | 3307 |
(New) Perfect Cookies 35th St | 428 |
(New) Presotea Manhattan Ave | 1100 | 102
(New) Pressed Juicery Manhattan Beach Blvd | 310 |
(New) Salt and Straw Manhattan Beach Blvd | 209 |
(New) Savva's Sepulveda Blvd | S 330 |
(New) Sidecar Doughnuts Sepulveda Blvd | 3026 |
(New) Smashburger Sepulveda Blvd | N 3026 |
(New) Sprinkles Cupcakes Sepulveda Blvd | N 3360 | N120 (New) Sunlife Organics Supulveda Blvd | 3200 |
(New) Sushi Manhattan Sepulveda Blvd | N 2700 |
(New) Sweetgreen LA Sepulveda Ave | N 3200 | E18
(New) The Hive Highland Ave | 2201 |
(New) The Hook and Plow Manhattan Ave | 1112 |
(New) Trader Joes Manhattan Beach Blvd | 1821 |
City of Manhattan Beach SSMP

107
(New) Two Guns Espresso Highland Ave | 3516 |
(New) Two Guns Espresso Manhattan Beach Blvd | 875 |
(New) Un Cafe Altamura Highland Ave | 1140 |
(New) Wild Forks Sepulveda Blvd | N 1130 |
(New) Wood Ranch Rosecrans Ave | 1550 | A1
Ali’i Sepulveda Blvd | N 924 |
Ameci Pizza & Pasta Man Bch Artesia Blvd | 1751 |
Amigos Tacos Artesia Blvd | 1221 |
Arthur J Manhattan Ave | 903 |
Baja Sharkeez Highland Ave | 3600 |
Bakery by the yard Rosecrans Ave | 312 |
Barnes & Noble Café Rosecrans Ave | 1800 |
Baskin Robbins Sepulveda Blvd | N 925 |
Beach Chinese Food To Go Rosecrans Ave | 314 |
Beach Pizza Highland Ave | 3301 |
Becker's Bakery Manhattan Ave | 1025 |
Belamar Hotel, The Sepulveda Blvd | N 3501 |
Big Wok Bar-B-Q Inc. Sepulveda Blvd | N 250 |
Bluestone Lane Manhattan Beach Blvd | 321 |
Brewco Manhattan Beach Blvd | 124 |
Bristol Farms Rosecrans Ave | 1570 |
Brooklyn Brick Oven Pizza Sepulveda Blvd | S 500 | 203
Cafe Rio Rosecrans Ave | 1800 | G
Cafe Wild Highland Ave | 3505 |
Caffe Altamura Highland Ave | 1140 |
California Pizza Kitchen Sepulveda Blvd | N 3280 |
Castle,The Sepulveda Blvd | N 2401 |
Dash Dash Manhattan Ave | 1127 |
Domino's Pizza #7842 Sepulveda Blvd | N 3001 | STE A
El Gringo Manhattan Sepulveda Blvd | N 921 |
El Pollo Loco #5905 Sepulveda Blvd | N 800 |
El Sombrero #1 Manhattan Ave | 1005 |
El Sombrero #2 Artesia Blvd | 1157 | B
El Tarasco Rosecrans Ave | 316 |
Ercoles Bar And Grill Manhattan Ave | 1101 |
Esperanza Cocina de la Playa Manhattan Beach Blvd | 309 | FanSea Sushi Rosecrans Ave | 302 |
Fatburger Artesia Blvd | 1139 | C
Fishbar Highland Ave | 3801 |
Fishing With Dynamite Manhattan Ave | 1148 | 1
Fresh Brothers Sepulveda Blvd | N 2008 |
Fusion Sushi Morningside Dr | 1150 |
Gelato And Angels Manhattan Beach Blvd | 308 |
Grunions Sports Bar & Grill Sepulveda Blvd | N 1501 |
City of Manhattan Beach SSMP

108
Hangar Inn Aviation Blvd | N 1001 |
Health Nut Manhattan Beach Blvd | 332 |
Hennesseys Tavern Manhattan Beach Blvd | 313 |
Hummus Factory, The Rosecrans Ave | 1570 | STE L
Il Fornaio Rosecrans Ave | 1800 |
India's Tandoori Sepulveda Blvd | N 916 |
Islands Fine Burgers & Drinks Sepulveda Blvd | N 3200 | STE D1 Izaka -Ya By Katsu-Ya, The Highland Ave | 1133 |
Jamba Juice #006 Rosecrans Ave | 1590 |
Joey Manhattan Beach Sepulveda Blvd | N 3120 |
Johnny Rockets Rosecrans Ave | 1550 | STE C
Just Food For Dogs Sepulveda Blvd | N 1605 |
Kettle,The Highland Ave | 1139 |
Le Pain Quotidien Manhattan Beach Blvd | 451 |
Lido De Manhattan Bakery Sepulveda Blvd | N 3001 | STE D Lido Di Manhattan Rosecrans Ave | 1550 | STE D
Little French Bakery Highland Ave | 3319 |
Local Yolk Llc, The Highland Ave | 3414 |
Love And Salt Manhattan Beach Blvd | 317 |
Mangiamo Manhattan Beach Blvd | 128 |
Manhattan Beach Creamery Manhattan Ave | 1120 |
Manhattan Beach Post Manhattan Ave | 1142 |
Manhattan Bread & Bagel Sepulveda Blvd | N 1812 |
Manhattan Meats Manhattan Ave | 1111 |
Manhattan Pizzeria Manhattan Beach Blvd | 133 |
Mc Donald's #11194 Manhattan Beach Blvd | 1852 |
Mc Donald's Of Man Bch Inc. Artesia Blvd | 1203 |
Mercado Sepulveda Blvd | N 3212 | A
Noahs Bagels #2546 Manhattan Beach Blvd | 330 | 332
North End Cafe Highland Ave | 3421 |
Nothing Bundt Cakes Rosecrans Ave | 1570 | STE Q
O-Sho Sushi Sepulveda Blvd | N 913 |
Ob's Grill & Bar Highland Ave | 3610 |
Olive Garden #1723, The Sepulveda Blvd | N 2610 | STE 1 Pachanga Mexican Grill Rosecrans Ave | 1590 |
Pancho's Abbjohn, Inc. Highland Ave | 3615 |
Panda Express Inc 356 Sepulveda Blvd | S 125 |
Paradise Bowls Manhattan Ave | 919 | STE D
Peet's Coffee & Tea Manhattan Beach Blvd | 328 |
Petros Manhattan Beach Blvd | 451 | STE B110
Pisces Highland Ave | 3216 |
Pitfire Artisan Pizza Manhattan Beach Blvd | 401 |
Pure Bean Artesia Blvd | 1133 |
Ralphs Grocery Company #166 Sepulveda Blvd | N 2700 |
City of Manhattan Beach SSMP

109
Reborn Coffee Sepulveda Blvd | N 3180 |
Rice Manhattan Ave | 820 | #105
Rice Teriyaki Sushi Grill Rosecrans Ave | 1570 | STE P Rock'N Fish Manhattan Beach Blvd | 120 |
Rockefeller Manhattan Beach, The Highland Ave | 1209 | Shellback Tavern Manhattan Beach Blvd | 116 |
Silverlake Ramen Sepulveda Blvd | N 3360 | 140
Simmzy's Manhattan Beach Blvd | 229 |
Slay Italian Kitchen Manhattan Ave | 1001 |
SLAY Steak & Fish House Manhattan Ave | 1141 |
Sloopy's Beach Café Highland Ave | 3416 |
Starbucks Sepulveda Blvd | N 815 |
Starbucks #542 Manhattan Beach Blvd | 233 |
Strand House, The Manhattan Beach Blvd | 117 |
Subway Sandwiches/Salads #2941 Artesia Blvd | 1145 |
Sugarfish 12th St | 304 |
Surf Food Stand The Strand | 4115 |
Susiecakes Bakery Sepulveda Blvd | N 3500 |
Taco Bell #28542 Sepulveda Blvd | N 301 |
Tacolicious Manhattan Ave | 1129 |
Target( Starbucks) Sepulveda Blvd | N 1200 |
Thai Dishes Restaurant Sepulveda Blvd | N 1015 |
The 900 Club Manhattan Ave | 900 |
The Coffee Bean & Tea Leaf Sepulveda Blvd | N 2616 |
The Garden Thai Restaurant Aviation Blvd | N 210 |
Tin Roof Bistro Sepulveda Blvd | N 3500 | 100
Tomboy's Manhattan Beach Blvd | 1816 |
Trader Joe’s Rosecrans Ave | 1800 |
Uncle Bills Pancake House Highland Ave | 1305 |
Union Pizza Company Rosecrans Ave | 1570 | K
Urban Beach Cafe Rosecrans Ave | 1600 | BLDG 5 A
Valentinos Pizza Aviation Blvd | N 975 |
Vons #2275 Manhattan Beach Blvd | 410 |
Yanagi Kitchen Sushi Rolls & Bowls Sepulveda Blvd | N 3001 | STE C Yogurtland South Bay Rosecrans Ave | 1570 | STE M

City of Manhattan Beach SSMP

111
Appendix G – Standard Operating Procedures

City of Manhattan Beach SSMP

112

City of Manhattan Beach SSMP

113

City of Manhattan Beach SSMP

114

City of Manhattan Beach SSMP

115

City of Manhattan Beach SSMP

116

City of Manhattan Beach SSMP

117

City of Manhattan Beach SSMP

118

City of Manhattan Beach SSMP

119

City of Manhattan Beach SSMP

120

City of Manhattan Beach SSMP

121

City of Manhattan Beach SSMP

122

City of Manhattan Beach SSMP

123

City of Manhattan Beach SSMP

124

City of Manhattan Beach SSMP

125

City of Manhattan Beach SSMP

128
Appendix H – Existing Pump Inventory

City of Manhattan Beach SSMP

130
Appendix I – Hot Spot Cleaning

Extra Attention Lines
Nov-24
page #Location Date Crew MH to MH, Footage, Pipe sizeHistory Sepulveda & Duncan Ave. 10-16 to 10-15 255 feet Duncan & Poinsettia 10-39 to 10-29 266 feet
10-126 to 10-125 300 feet Notify before Hydro-jetting (714)249-0108 412 6th st & Ingleside 10-129 to 10-126 30 feet Notify before Hydro-jetting (714)249-0108 7th & Highland 11-105 to 11-106 100 feet
9th & The Strand 11-134 to 11-128 110 feet
11-134 to 11-133 300 feet
617 Highland 11-106 to 11-106A 120 feetCALL (310) 874-4762 416 10th St. & Crest. 11-87 to 11-86, 208 feet 6"Don’t go past 420ft from MH 11-88 11-88 to 11-87 266 feet 8"
15th place & Valley 14- 9 to 14- 8, 220 feet
13th & Morningside 14 -12 to 14-11 292 feet
14-13 to 14-12 40 feet
14-15 to 14-13 271 feet
Extra Attention Lines 6/16/2025 3:14 PM
Extra Attention Lines
page #Location Date Crew MH to MH, Footage, Pipe sizeHistory 644 14th (Church lot) 15- 13 to 15- 12 172 feet
18th & Agnes 15-33 to 15-32 301 feet
15-34 to 15-33 300 feet
15 - 34 to 15 - 27 185 feet
15 - 27 to 15 - 24 202 feet
15 - 24 to 15 - 23 195 feet
24th & Blanche 15- 82 to 15- 81, 315 feet 6" 15- 82A to 15- 82, 258 feet 6"
17- 12 to 17- 11 352 feet 8"
17 - 13 to 17 - 12 149 feet
29th & Bell 17- 13 to 17- 18A, 281 feet, 10"
17- 13 to 17- 6, 343 feet 10"
575 31st. 17- 20 to 17- 19 351 feet Hard spot at 170 feet. 36th Pl. & Bell 17-26 to 17-25 338 feet
17-26 to 17-29 350 feet
27th & Flournoy 16-15 to 16-16 350 feet
Extra Attention Lines 6/16/2025 3:14 PM
Extra Attention Lines
page #Location Date Crew MH to MH, Footage, Pipe sizeHistory 16-15 to 16-17 350 feet
31st pl. & Agnes 17- 52 to 17- 51 324 feet. Hard spot @ 90 feet. 33rd Pl. & Flournoy to Bell 17- 64 to 17- 63 260 feet 8" 17- 65 to 17- 64 325 feet 8"
17- 66 to 17- 65 166 feet 8"
17- 67 to 17- 66 210 feet 8"
17- 68 to 17- 67 316 feet 8"
17- 69 to 17- 50 349 feet 8"
33rd Pl. & Bell 17- 69 to 17- 68 227 feet 8" 31st Pl. & Blanche 17-72 to 17-71 355 feet 8" 17- 73 to 17-72 247 feet
17- 70 to 17- 69 105 feet
17-75 to 17- 70 150 feet 8"
31st Pl. & Bell 17- 74 to 17-73 275 feet 8" 17 - 75 to 17 - 74 350 feet
43rd & The Strand 23-9 Parking lot 300 feet
34th & Man Ave. to Highland 18- 34 to 18- 33, 256 feet 6" Extra Attention Lines 6/16/2025 3:14 PM
Extra Attention Lines
page #Location Date Crew MH to MH, Footage, Pipe sizeHistory 36th & Man Ave. 18- 39 to 18- 38 236 feet 6" Rosecrans & Man Ave. 18- 40 to 18- 39 240 feet 6" 18- 46 to 18- 43 175 feet
Rosecrans Pl. & Highland 18- 46 to 18- 44 120 feet 35th & Grandview 18-10 to 18-9 310 feet Physically check at MH # 18-9 33rd & Alma 18- 4 to 18- 2 236 feet 6"
33rd & Alma 18- 4 to 18- 3 172 feet 6"
34th & Alma 18-8 to 18-4 228 feet 6"
31st & Alma 19-5 to 19-2 316 feet
19-5 to 19-4 155 feet
19- 10 to 19- 9, 355 feet 6"
32nd & Alma 19- 12 to 19- 10, 267 feet 6"
28th & Alma 20- 16 to 20- 13, 177 feet 6"
29th & Alma 20- 6 to 20- 3, 270 feet 6"
23th & Man ave to 24 th MA 20- 59 to 20- 57 174 feet 6" 24th & Highland to Alma 21- 10 to 21- 9 227 feet, 6" 23 & Highland to 24th High. 21- 18 to 21- 10, 240 feet 6" Extra Attention Lines 6/16/2025 3:14 PM
Extra Attention Lines
page #Location Date Crew MH to MH, Footage, Pipe sizeHistory 23rd & Highland to 23 Alma 21- 18 to 21- 8, 240 feet 6" 23rd & Strand 21- 23 to 21- 22, 302 feet 6" 23rd & Alma 21-7 to 21-6 110 feet 6"Notify Supervisor or PD 21-8 to 21-7 60 feet
20th & Highland 22-30 to 22-29 162 feet
22-31 to 22-30 352 feet
Terrazza Pl. & Ronda 4- 29 to 4-28, 140 feet 8" 1217 2nd St. & Terrazza 4- 30 to 4-29 350 feet 8" 4-31 to 4-30 300 feet
Keats & Meadows 5-43 to 5-42 136 feet 8"Grease 5-44 to 5-43 222 feet
Rosecrans & Pacific 7- 33 to 7- 32 237 feet 8" Rosecrans & Palm ave. 7- 38 to 7- 37 265 feet 8" 8- 17 to 8- 19 160 feet 8"
Rosecrans & Poinsettia ave. 7-11 to 7-7 270 feet 8"Hard spot at 160 feet.

Pine Easement / Walnut 8- 18 to 8- 19 170 feet 8" Extra Attention Lines 6/16/2025 3:14 PM
Extra Attention Lines
page #Location Date Crew MH to MH, Footage, Pipe sizeHistory 8- 23 to 8- 19 220 feet 8"
Walnut & Valley 8-24 to 8-25 150 feet
8-25 to 8-26 349 feet
31st & laurel. 8- 68 to 8- 67 268 feet 8" 8- 71 to 8- 68 186 feet 8"
8- 71 to 8- 70 252 feet 8"
30th & Laurel 8- 72 to 8- 66 251 feet 8" 8- 72 to 8- 71 121 feet 8"
2920 Laurel 8-73 to 8- 72 61 feet 8" 8- 73 to 8- 74 129 feet 8"
8- 73 to 8-62 220 feet 8"
8- 74 to 8- 76 174 feet 8"
19th & Lyngrove 2-32 to 2-30 250 feet 8"**GREASE BUILD UP** **Roots** Wendy way & 19th 2-41 to 2-40 340 feet
2-42 to 2-41 340 feet
1821 3rd st 1-92 to 1-93 190 feet 8"**ROOTS** 2nd & Vista 10-143 to 10-146 250 feet 6"
Extra Attention Lines 6/16/2025 3:14 PM
Extra Attention Lines
page #Location Date Crew MH to MH, Footage, Pipe sizeHistory 10-144 to 10-146 150 feet 6"
10-145 to 10-146 300 feet 6"
2nd & Ingleside 10-146 to 10-147 300 feet 8"
Gates & Aviation 01-55 to 01-56 248 feet 8"Pipe offset at 244 feet 17th & Ocean 22-13 to 22-50 116 feet **ROOTS**
1237 6th St. 04-48 to 04-49 338 feet 8"Hard Spot at 68 feet 931 9th St. 09-10 to 09-08 150 feet
09-08 to 09-07 150 feet
09-08 to 09-06 150 feet
09-10 to 09-11 145 feet
09-15 to 09-13 178 feet
09-13 to 09-12 160 feet
09-13 to 09-11 150 feet
2516 Palm 06-276 to 06-275 192 feet
36th St. & Bell 17-32 to 17-29 175 feet
Rosecrans & Man. Ave 18-40 to 18-29 284 feet
Extra Attention Lines 6/16/2025 3:14 PM
Extra Attention Lines
page #Location Date Crew MH to MH, Footage, Pipe sizeHistory Fairway Dr. & Lafayette Ct. 24-34 to 24-35 156 feet 28th & Man. Ave 20-44 to 20-46 251 feet
28th & Highland 20-29 to 20-28 254 feet
461 33rd St 18-02 to 18-01
440 5th St 10-132 to 10-131
544 3rd St 10-142 to 10-140
461 30th 20-02 to 20-01 300ft Hard spot @ 140ft 30th St & Vista 20-03 to 20-02 300ft Hard spot @ 90ft 606 9th St 350ft Verify jetter makes it to upper MH Extra Attention Lines 6/16/2025 3:14 PM
City of Manhattan Beach SSMP

136
Appendix 1 – Code of Ordinance, Title 5 – Sanitation and Health, Chapter 5.36 – Sewers, Sewage Disposal – City Sewage System

5.36.170 – Sewer Connection
It shall be unlawful for any person to make, or cause to be made, any sewer connection referred to or designated in this chapter pursuant to any such permit at any place other than that designated therein.

5.36.240 – Maintenance of House Connection Sewers
All house connection sewers, industrial connection sewers and appurtenances thereto shall be maintained by the owner of the property served in a safe and sanitary condition, and all devices or safeguards which are required by this chapter or any other law of the City for the operation thereof shall be maintained in good working order.

5.36.250 – Depositing of Industrial Waste and Solids in Sewers It shall be unlawful for any person to place, throw or deposit, or cause or permit to be placed, thrown or deposited, in any public sewer or sewer connection any dead animal, offal, or garbage, or to place, throw or deposit or discharge, or cause or permit to be placed, thrown, deposited or discharged, in any such sewer any fish, fruit or vegetable waste or other solid matters or materials or obstructions of any kind whatever of such nature as shall clog, obstruct or fill such sewer, or which shall interfere with or prevent the effective use or operation thereof. It shall be unlawful for any person to cause or permit to be deposited or discharged into any such sewer any water, sewage or liquid waste of any kind containing chemicals, greases, oil, tar or other matters in solution which may by reason of precipitation clog, obstruct or fill the same, or which may in any way interfere with or prevent the effective use thereof, or which may necessitate or require frequent repair, cleaning out or flushing of such sewer to render the same operative.

5.36.260 – Dilution and Neutralization of Acids and Corrosive Liquids In no case shall acids or corrosive liquids liable to destroy or damage a public or house connection sewer be discharged into such sewer without being fully diluted and neutralized by passing through a properly constructed dilution and neutralizing sink or tank. Such sink or tank shall be automatically provided with a sufficient intake of water or neutralizing medium or substance so as to make its contents non -injurious before being discharged.

5.36.270 – Storm Waters
It shall be unlawful for any person to connect any roof conductor, yard drain or other conduit used for carrying off rain or surface water with any sanitary sewer of the City or house connection sewer leading thereto.

City of Manhattan Beach SSMP

137

5.36.280 – Cellar Shower Drainage
Any cellar drain or any shower in a basement or roofed shower in a yard shall be protected to prevent the admission of sand, detritus and storm or surface water into the sewer.

When necessary, in the opinion of the Division Superintendent, a person shall trap such appurtenances by a sand interceptor constructed in accordance with the provisions of the Uniform Plumbing Code.

5.36.290 – Swimming Pools
It shall be unlawful for any person to connect any swimming pool or tank to any public sewer in the City or house connection leading thereto, except in those instances where the topography, gradients, capacities and/or other features of the public sewer permit such over quantitative discharge, or control outlined by the Engineering Department.

5.36.300 – Over quantitative Discharge
Application must be made to the Public Works Department for permission to discharge water from swimming pools or other large quantities of water. A permit fee will be charged as established by the Council under separate resolution.

5.36.310 – Alterations Must Conform
All renewals or alterations of any public or house connection sewer, or any repairs or additions thereto, must conform to the requirements of the Uniform Plumbing Code and/or the Special Plans and Specifications No. MBSS-200A-0(ST-5) referred to in Section

5.36.170.

5.36.320 - Damage to sewers, flush tanks and manholes.

It shall be unlawful for any person to remove or cause to be removed or to damage or cause to be damaged any portion of any public sewer, flush tank, flushing manhole or manhole, or to open or enter or cause to be opened or entered, any public sewer, flush tank, flushing manhole or manhole, or to use or cause to be used any water from any flushing apparatus for any use whatever without first obtaining a permit from the Building Inspector to do so.

5.36.330 - Draining Cesspools or Septic Tanks
A. No person shall connect or cause to be connected any cesspool or septic tank to any public sewer or house sewer connection leading thereto.

B. No effluent from cesspools or septic tanks may be discharged or pumped into any house sewer connection or public sewer or manhole.

5.36.340 - Abandoned septic tanks and cesspools.

Abandoned septic tanks and cesspools shall be dealt with in accordance with existing requirements of the Uniform Plumbing Code.

City of Manhattan Beach SSMP

138
Appendix 2 – Code of Ordinance, Title 5 – Sanitation and Health, Chapter 5.38 – Fats, Oils and Grease Management And Discharge Control

5.38.015 – FOG Discharge Requirement
No FSE shall discharge or cause to be discharged into the sewer system FOG that exceeds a concentration level adopted by the City or that may accumulate and/or cause or contribute to blockages in the sewer system or at the sewer system lateral which connects the FSE to the sewer system.

5.38.020 – Prohibitions
The following prohibitions shall apply to all FSEs:

A. No person shall discharge, or cause to be discharged any wastewater from FSEs directly or indirectly into the sewer system without first obtaining an FOG wastewater discharge permit pursuant to this chapter.

B. Discharge of any waste, including FOG and solid materials removed from the grease control device to the sewer system, is prohibited.

C. Discharge of any waste or FOG to the sewer system which fails to comply with the FOG Discharge Manual is prohibited.

D. Discharge of any waste or FOG to the sewer system in a manner which either violates the sewer WDRs or causes or contributes to a condition which fails to comply with the sewer WDRs is prohibited.

5.38.025 – Food Grinders Prohibited
A. No food grinder shall be installed in a plumbing system of new construction of an FSE.

B. All food grinders shall be removed from an existing FSE upon:

1. Major operational change to the FSE; or

2. Any construction requiring the issuance of a building permit for either remodeling or construction of the FSE valued at fifty thousand dollars ($50,000.00) or more.

All food grinders shall be removed from all existing FSEs within 180 days of the effective date of the ordinance from which this chapter was derived, except when expressly allowed by the Director.

5.38.030 – Best Management Practices Required
A. All FSEs shall implement best management practices in its operation to minimize the discharge of FOG to the sewer system.

B. All FSEs must implement and demonstrate compliance with best management practices (BMP) requirements as specified in the City's FOG Discharge Manual. Detailed requirements for best management practices are specified in the FOG Discharge Manual and may include kitchen practices and employees training that are essential in minimizing FOG discharges.

5.38.035 – FOG Pretreatment Required
FSEs are required to install, operate and maintain an approved type and adequately sized grease interceptor necessary to maintain compliance with the objectives of this City of Manhattan Beach SSMP

139
chapter in accordance with the FOG Discharge Manual and the requirements of 40 CFR § 403.5.

5.38.045 – Multiple FSEs at Commercial Properties
For properties at which multiple FSEs are operated on a single parcel, each FSE operator shall be individually and separately responsible for installation and maintenance of the grease interceptor serving its FSEs and for compliance with this chapter. Furt hermore, owners of commercial properties at which multiple FSEs are operated on a single parcel shall be responsible for ensuring compliance by each FSE on the parcel. Such operators and/or property owner can comply with this chapter by installing and maintaining a grease interceptor or grease interceptors serving multiple FSEs upon approval by the Director on such terms and conditions that the Director may establish in his sole discretion.

5.38.050 – Grease Disposal Mitigation Fee
A. FSEs that operate without a grease control interceptor may be required to pay an annual grease disposal mitigation fee to equitably cover the costs of increased maintenance and administration of the sewer system as a result of the FSEs' inability to adequately remove FOG from its wastewater discharge. This section shall not be interpreted to allow a new FSE or existing FSEs undergoing remodeling or change in operations, to operate without an approved grease interceptor unless the Di rector has determined that it is impossible to install or operate a grease control interceptor for the FSE under the provisions of this chapter.

B. The grease disposal mitigation fee shall be established by resolution of the City Council, and shall be based on the estimated annual increased cost of maintaining the sewer system for inspection and removal of FOG and other viscous or solidifying agents attributable to the FSE resulting from the lack of a grease interceptor or grease control device and such other costs that the City Council considers appropriate.

C. The grease disposal mitigation fee may not be waived or reduced when the FSE does not comply with the minimum requirements of this chapter and/or its discharge into the sewer system in the preceding twelve (12) months has caused or potentially caused or contributed alone or collectively, in sewer blockage or an SSO in the sewer downstream, or surrounding the FSE prior to the waiver request.

D. At a minimum, the grease disposal mitigation fee shall be equivalent to the City's cost to:

1. Conduct quarterly inspections of FSE premises for compliance with this chapter;

2. Clean the city sewer line that is impacted by the FSEs waste water discharges twice a year; and

3. Review the FSEs sewer lateral cleaning records.

5.38.055 – Sewer System Overflows, Public Nuisance, Abatement Orders and Cleanup Costs
Notwithstanding any waiver of grease interceptor requirements under this chapter, FSEs determined by the Director to have contributed to a sewer blockage, SSOs or any sewer system interferences resulting from the discharge of wastewater or waste City of Manhattan Beach SSMP

140
containing FOG, may be ordered by the Director to immediately install and maintain a grease interceptor, and may be subject to a plan determined by the Director to abate the nuisance and prevent any future health hazards created by sewer line failures and blockages, SSOs or any other sewer system interferences. SSOs may cause threat and injury to public health, safety, and welfare of life and property and are hereby declared public nuisances. Furthermore, sewer lateral failures and SSOs caused by FSEs alone or collectively are the responsibility of the private property owner and/or FSE, and individual(s) as a responsible officer or owner of the FSE. If the City must act immediately to contain and clean up an SSO caused by blockage of a private or public sewer lateral or serving an FSE, or at the request of the property owner or operator of the FSE, or because of the failure of the property owner or FSE to abate the condition causing immediate threat of injury to the health, safety, welfare, or property of the public, the City's costs for such abatement may be entirely borne by the property owner or operator of the FSE, and individual(s) as a responsible officer or owner of the FSE(s) and may constitute a debt to the City and become due and immediately payable upon the City's request for reimbursement of such costs.

5.38.060 – FOG Wastewater Discharge Permit Required
A. FSEs proposing to discharge or currently discharging wastewater-containing FOG into the City's sewer system shall obtain an FOG wastewater discharge permit from the City within either:

1. One hundred eighty (180) days from the effective date of this chapter; or

2. At the time any FSE applies for or renews its annual business license from the City. Compliance with this chapter must be demonstrated at the time any business license is issued, provided that the Director may extend the compliance date for no more than ninety (90) days after the date of the issuance of the license.

B. FOG wastewater discharge permits shall be expressly subject to all provisions of this chapter and all other regulations, charges for use, and fees established by the City. The conditions of FOG wastewater discharge permits shall be enforced by the City in accordance with this chapter and applicable State and Federal regulations.

C. The City shall not issue a certificate of occupancy for any new construction, or occupancy unless an FSE has fully complied with the provisions of this chapter.

5.38.065 – FOG Wastewater Discharge Permit Application
Any person required to obtain an FOG wastewater discharge permit shall complete and file with the City prior to commencing discharges, an application in a form prescribed by the Director and shall provide the City such plans, information, and documents as the Director determines is necessary and appropriate to properly evaluate the application. The applicable fees shall accompany this application. After evaluation of the data furnished, the Director may issue an FOG wastewater discharge permit, subject to terms and conditions set forth in this chapter and as otherwise determined by the Director to be appropriate to protect the City's sewer system.

5.38.070 – FOG Wastewater Discharge Permit Condition
City of Manhattan Beach SSMP

141
The issuance of an FOG wastewater discharge permit may contain any of the following conditions or limits as determined by the Director:

A. Limits on discharge of FOG and other priority pollutants; B. Requirements for proper operation and maintenance of grease interceptors and other grease control devices;
C. Grease interceptor maintenance frequency and schedule; D. Requirements for implementation of best management practices and installation of adequate grease interceptor and/or grease control devices; E. Requirements for maintaining and reporting status of best management practices; F. Requirements for maintaining and submitting logs and records, including waste hauling records and waste manifests;
G. Requirements to self-monitor;
H. Requirements for the FSE to construct, operate, and maintain, at its own expense, FOG control device and sampling facilities;
I. Consent by the operator of the FSE for the City and other regulatory agencies to inspect the FSE to confirm compliance with this chapter, the NPDES permit and other applicable laws, rules and regulations;
J. Additional requirements as otherwise determined to be reasonably appropriate by the Director to protect the City's system or as specified by other regulatory agencies; or K. Other terms and conditions, which may be reasonably applicable to ensure compliance with this chapter as determined by the Director.

5.38.105 – Grease Interceptor Requirements
A. No waste water discharges from FSEs shall be introduced into the sewer system until the required grease interceptors have been approved by the Director.

B. Grease interceptors shall be maintained in efficient operating condition in accordance with the FOG Discharge Manual.

C. Grease interceptors must be cleaned, maintained, and FOG must be removed from grease interceptors at regular intervals.

D. FOG removed from grease interceptors shall be waste hauled periodically as part of the operation and maintenance requirements for grease interceptors and disposed of at an approved location in a proper manner and at regular intervals.

5.38.110 – Monitoring and Reporting Conditions
A. Monitoring for Compliance with FOG Wastewater Discharge Conditions and Reporting Requirements.

1. The Director may require periodic reporting of the status of implementation of best management practices, in accordance with the FOG control program and the FOG Discharge Manual.

2. The Director may require visual and other monitoring at the sole expense of the permitted to observe the actual conditions of the FSEs sewer lateral and sewer lines downstream.

3. The Director may require reports for self -monitoring of wastewater constituents and FOG characteristics of the permitted needed for determining compliance with any conditions or requirements as specified in the FOG wastewater discharge permit or this chapter. Monitoring reports of the analyses of wastewater City of Manhattan Beach SSMP

142
constituents and FOG characteristics shall be in a manner and form approved by the Director and shall be submitted upon request of the Director.

4. Failure by the permitted to perform any required monitoring, or to submit monitoring reports required by the Director constitutes a violation of this chapter and shall be cause for the City to initiate all necessary tasks and analyses to determine the wastewater constituents and FOG characteristics for compliance with any conditions and requirements specified in the FOG wastewater discharge permit or in this chapter.

5. The permitted shall be responsible for any and all expenses of the City in undertaking such monitoring analyses and preparation of reports.

6. Other reports may be required such as compliance schedule progress reports, FOG control monitoring reports, and any other reports deemed reasonably appropriate by the Director to ensure compliance with this chapter.

B. Record Keeping Requirements. The permitted shall be required to keep all documents identified by the Director relating to its compliance with this chapter, including manifests, receipts and invoices of all cleaning, maintenance, grease removal of/from the grease control device, disposal carrier and disposal site location for no less than two (2) years.

The permitted shall, upon request, make the manifests, receipts and invoices available to any City representative, or inspector. These records may include:

1. A logbook of grease interceptor, and/or other grease control device cleaning and maintenance practices;

2. A record of best management practices being implemented including employee training;

3. Copies of records and manifests of waste hauling interceptor contents;

4. Records of sampling data and sludge height monitoring for FOG and solids accumulation in the grease interceptors; or

5. Any other information deemed appropriate by the Director to ensure compliance with the ordinance from which this chapter was derived.

C. Falsifying Information or Tampering with Process. It shall be unlawful to make any false statement, representation, record, report, plan or other document that is filed with the City, or to tamper with or knowingly render inoperable any grease control devi ce, monitoring device or method or access point required under this chapter.

5.38.115 – Inspection and Sampling Conditions
A. The Director may inspect or order the inspection and sample the wastewater discharges of any FSE to ascertain whether the intent of this chapter is being met and the permitted is complying with all requirements. The permitted shall allow the City access to the FSE premises, during normal business hours, for purposes of inspecting the FSE's grease control devices and/or interceptor, reviewing the manifests, receipts and invoices relating to the cleaning, maintenance and inspection of the grease control devices or interceptor.

B. The Director shall have the right to place or order the placement on the FSE's property or other locations as determined by the Director, such devices as are necessary to conduct sampling or metering operations. Where an FSE has security measures in force, the permitted shall make necessary arrangements so that
City of Manhattan Beach SSMP

143
representatives of the City shall be permitted to enter without delay for the purpose of performing their specific responsibilities.

C. For the Director to determine the wastewater characteristics of the discharger for purposes of determining the annual use charge and for compliance with permit requirements, the permitted shall make available for inspection and copying by the City all notices, monitoring reports, waste manifests, and records including, but not limited to, those related to wastewater generation, and wastewater disposal without restriction but subject to the confidentiality provision set forth in this chapter. All such record s shall be kept by the permitted a minimum of two (2) years.

5.38.120 – Right of Entry
Persons or occupants of premises where wastewater is created or discharged shall allow the Director, or City representatives, reasonable access to all parts of the FSE and all wastewater generating and disposal facilities for the purposes of inspection and sampling during all times the discharger's facility is open, operating, or any other reasonable time.

No person shall interfere with, delay, resist or refuse entrance to City representatives attempting to inspect any FSE or facility involved directly or indirectly with a discharge of wastewater to the City's sewer system.

5.38.125 – Notification of Spill
A. In the event a permitted is unable to comply with any permit condition due to a breakdown of equipment, accidents, or human error or the permitted has reasonable opportunity to know that his/her/its discharge will exceed the discharge provisions of the FOG wastewater discharge permit or this chapter, the discharger shall immediately notify the City by telephone at the number specified in the permit. If the material discharged to the sewer has the potential to cause or results in sewer blockages or SSOs, the discharger shall immediately notify the City, the Los Angeles County Department of Public Health, the Regional Water Quality Control Board, and the California State Office of Emergency Services if the SSO is 1,000 gallons or more.

B. Confirmation of this notification shall be made in writing to the Director at the address specified in the permit no later than five (5) working days from the date of the incident.

The written notification shall state the date of the incident, the reasons for the discharge or spill, what steps were taken to immediately correct the problem, and what steps are being taken to prevent the problem from recurring.

C. Such notification shall not relieve the permitted of any expense, loss, damage or other liability which may be incurred as a result of damage or loss to the City or any other damage or loss to person or property; nor shall such notification relieve the per mitted of any fees or other liability which may be imposed by this chapter or other applicable law.

5.38.130 – Enforcement
A. The City Council finds that, in order for the City to comply with the laws, regulations, and rules imposed upon it by regulatory agencies and to ensure that the City's sewer facilities are protected and are able to operate with the highest degree of efficiency and to protect the public health and the environment, specific enforcement provisions must be adopted to govern the discharges to the City's sewer system by FSEs.

City of Manhattan Beach SSMP

144
B. To ensure that all interested parties are afforded due process of law and that violations are resolved as soon as possible, a permitted, or applicant for a permit, may appeal any determination made by the Director, including but not limited to a denial of a discharge permit, a notice of violation, permit suspension or revocation, or a compliance schedule agreement (CSA), pursuant to the procedures set forth in Section 5.38.185.

C. The City, at its discretion, may utilize anyone, combination, or all enforcement remedies provided in this chapter in response to any FOG wastewater discharge permit or chapter violations.

5.38.135 – Violations
A. The owner and operator of an FSE or permitted shall be in violation of this chapter if such owner or operator or permitted:

1. Fails to install approved grease control device as required by this chapter;

2. Makes any false statement, representation, record, report, plan or other document that is filed with the City;

3. Tampers with or knowingly renders inoperable any grease control device required under this chapter;

4. Fails to clean, maintain or remove grease from a grease control device within the required time for such cleaning, maintenance or grease removal;

5. Fails to keep up -to-date and accurate records of all cleaning, maintenance, and grease removal and upon request to make those records available to any City code enforcement representative, or his or her designee, any representative of a local sanitation agency that has jurisdiction over the sanitary sewer system that services the food facility, or any authorized inspector that has jurisdiction under the water quality chapter;

6. Refuses a City code enforcement representative, or his or her designee, a representative of a local sanitary sewer agency that has jurisdiction over the sanitary sewer system that services the food facility, or any authorized inspector, reasonable access t o the food facility for the purposes of inspecting, monitoring, or reviewing the grease control device manifests, receipts and invoices of all cleaning, maintenance, grease removal of/from the grease control device, and/or to inspect the grease control device;

7. Disposes of, or knowingly allows or directs FOG to be disposed of, in an unlawful manner;

8. Fails to remove all food grinders located in the food facility by the date specified by this chapter;

9. Introduces additives into a wastewater system for the purposes of emulsifying FOG without the written, specific authorization from the sanitary sewer agency that has jurisdiction of the sanitary sewer system that services the food facility;

10. Fails to pay the grease disposal mitigation fee as specified in this chapter when due;

11. Fails to comply with the FOG Discharge Manual; or

12. Otherwise fails to comply with the provisions of this chapter or any permit issued by the City under this chapter.

B. Violations under this section shall be subject to the procedures, penalties and remedies set out in this chapter and Chapter 1.04. All costs for the investigations, City of Manhattan Beach SSMP

145
enforcement actions, and ultimate corrections of violations under this section, incurred by the City shall be reimbursed by the owner/operator of the FSE.

5.38.140 – Compliance Schedule Agreement (CSA)
A. Upon determination by the Director that a permitted or other owner or operator of an FSE or owner of a property is in noncompliance with the terms and conditions specified in its permit or any provision of this chapter, or needs to construct and/or acquire and install a grease control device or grease interceptor, the Director may require the permitted, owner or operator to enter into a CSA.

B. The issuance of a CSA may contain terms and conditions as determine appropriate by the Director, including but not limited to requirements for installation of a grease control device, grease interceptor and facilities, submittal of drawings or reports, audit of waste hauling records, best management and waste minimization practices, payment of fees, or other provisions to ensure compliance with this chapter.

C. The Director shall not enter into a CSA until such time as all amounts owed to the City, including user fees, noncompliance sampling fees, or, or other amounts due are paid in full, or an agreement for deferred payment secured by collateral or a third part y, is approved by the Director. If compliance is not achieved in accordance with the terms and conditions of a CSA during its term, the Director may issue an order suspending or revoking the discharge permit pursuant to this chapter.

5.38.145 – Permit Suspension
A. The Director may suspend any permit when it is determined that a permitted:

1. Fails to comply with the terms and conditions of a CSA order;

2. Knowingly provides a false statement, representation, record, report, or other document to the City;

3. Refuses to provide records, reports, plans, or other documents required by the City to determine permit terms or conditions, discharge compliance, or compliance with this chapter;

4. Falsifies, tampers with, or knowingly renders inaccurate any monitoring device or sample collection method;

5. Refuses reasonable access to the Permittee's premises for the purpose of inspection and monitoring;

6. Does not make timely payment of all amounts owed to the City for user charges, permit fees, or any other fees imposed pursuant to this chapter;

7. Causes interference, sewer blockages, or SSOs with the City's collection, treatment, or disposal system; or

8. Violates grease interceptor maintenance requirements, any condition or limit of its discharge permit or any provision of this chapter.

B. When the Director has reason to believe that grounds exist for permit suspension, he/she shall give written notice thereof by certified mail to the permitted setting forth a statement of the facts and grounds deemed to exist.

C. Effect.

1. Upon an order of suspension by the Director, the permitted shall immediately cease and desist its discharge and shall have no right to discharge any wastewater containing FOG directly or indirectly to the City's system for the City of Manhattan Beach SSMP

146
duration of the suspension. All costs for physically terminating and reinstating service shall be paid by the permitted.

2. Any owner or responsible management employee of the permitted shall be bound by the order of suspension.

5.38.150 – Permit Revocation
A. Revocation. The Director may revoke any FOG wastewater discharge permit when it is determined that a permitted has failed to comply with this chapter.

B. Notice of Revocation. When the Director has reason to believe that grounds exist for the revocation of a permit, he/she shall give written notice by certified mail thereof to the permitted setting forth a statement of the facts and grounds.

C. Effect of Revocation.

1. Upon an order of revocation by the Director becoming final, the permitted shall permanently lose all rights to discharge any wastewater containing FOG directly or indirectly to the City's system. All costs for physical termination shall be paid by the permitted.

2. Any owner or responsible management employee of the permitted shall be bound by the order of revocation.

3. Any future application for a discharge permit at any location within the City by any person associated with an order of revocation will be considered by the City after fully reviewing the records of the revoked permit, which records may be the basis for denial of a new permit.

4. An order of permit revocation issued by the Director of Public Works shall be final in all respects on the sixteenth (16th) day after it is mailed to the permitted.

5.38.155 – Damages to Facilities or Interruption of Normal Operations A. Any person who discharges any waste, including but not limited to those listed under 40 CFR § 403.5, which causes or contributes to any sewer blockage, SSOs, obstruction, interference, damage, or any other impairment to the City's sewer facilities or to the operation of those facilities shall be liable for all costs required to clean or repair the facilities together with expenses incurred by the City to resume normal operations. The total amount shall be payable within forty-five (45) days of invoicing by the City.

B. Any person who discharges a waste which causes or contributes to the City violating its discharge requirements established by any regulatory agency incurring additional expenses or suffering losses or damage to the facilities, shall be liable for any costs or expenses incurred by the City, including regulatory fines, penalties, and assessments made by other agencies or a court.

5.38.160 – Public Nuisance
Discharge of wastewater in any manner in violation of this chapter or of any order issued by the Director, as authorized by this chapter, is hereby declared a public nuisance, and shall be corrected or abated as directed by the Director. Any person creating a public nuisance is guilty of a misdemeanor.

5.38.165 – Termination of Service
City of Manhattan Beach SSMP

147
A. The City, by order of the Director, may physically terminate sewer service and water service to any FSE, as follows:

1. On a term of any order of suspension or revocation of a permit; or

2. Upon the failure of a person not holding a valid discharge permit to immediately cease the discharge, whether direct or indirect, to the City's sewer facilities after the notice and process as provided herein.

B. All costs for physical termination shall be paid by the owner or operator of the FSE or permitted as well as all costs for reinstating service.

5.38.170 – Emergency Suspension Order
The City may, by order of the Director, suspend sewer service and/or water service when the Director determines that such suspension is necessary in order to stop an actual or impending discharge which presents or may present an imminent or substantial endangerment to the health and welfare of persons, or to the environment, or may cause SSOs, sewer blockages, interference to the City's sewer facilities, or may cause the City to violate any State or Federal law or regulation. Any discharger notified of and subject to an emergency suspension order shall immediately cease and desist the discharge of all wastewater containing FOG to the sewer system.

5.38.175 – Civil Penalties
A. In addition to criminal penalties and administrative penalties authorized by this Code, all users of the City's system and facilities are subject to enforcement actions administratively or judicially by the City, U.S. EPA, State of California Regional Wate r Quality Control Board, or the County of Orange Los Angeles, and other regulatory agencies. Said actions may be taken pursuant to the authority and provisions of several laws, including but not limited to:

1. Federal Water Pollution Control Act, commonly known as the Clean Water Act (33 U.S.C.A. Section 1251 et seq.);

2. California Porter-Cologne Water Quality Control Act (California Water Code Section 13000 et seq.);

3. California Hazardous Waste Control Law (California Health & Safety Code Section 25100 et seq.);

4. Resource Conservation and Recovery Act of 1976 (42 U.S.C.A Section 6901 et seq.); and

5. California Government Code, Sections 54739—54740.

B. In the event the City is subject to the payment of fines or penalties pursuant to the legal authority and actions of other regulatory or enforcement agencies based on a violation of law or regulation or its permits, and said violation can be established by the City, as caused by the discharge of any user of the City's system which is in violation of any provision of the City's chapter or the user's permit, the City shall be entitled to recover from the user all costs and expenses, including, but not limited to, the full amount of said fines or penalties to which it has been subjected.

C. Pursuant to the authority of California Government Code Sections 54739—54740, any person who violates any provision of this chapter; any permit condition, prohibition, or effluent limit; or any suspension or revocation order shall be liable civilly for a sum not to exceed twenty-five thousand dollars ($25,000.00) per violation for each day in which City of Manhattan Beach SSMP

148
such violation occurs. Pursuant to the authority of the Clean Water Act, 33 U.S.C. Section 1251 et seq., any person who violates any provision of this chapter, or any permit condition, prohibition, or effluent limit shall be liable civilly for a sum not to exceed twenty- five thousand dollars ($25,000.00) per violation for each day in which such violation occurs. The City At torney of the City, upon request of the Director, shall petition the Superior Court to impose, assess, and recover such penalties, or such other penalties as the City may impose, assess, and recover pursuant to Federal and/or State legislative authorization.

D. Administrative Civil Penalties. Pursuant to the authority of California Government Code Sections 54740.5 and 54740.6, the City may issue an administrative complaint to any person who violates:

1. Any provision of this chapter;

2. Any permit condition, prohibition, or effluent limit; or

3. Any suspension or revocation order.

5.38.165 – Criminal Penalties
Any person who violates any provision of this chapter is guilty of a misdemeanor, which upon conviction is punishable by a fine not to exceed one thousand dollars ($1,000.00), or imprisonment for not more than six (6) months, or both. Each violation and each day in which a violation occurs may constitute a new and separate violation of this chapter and shall be subject to the penalties contained herein.

City of Manhattan Beach SSMP

149
Appendix 3 – Equipment and Replacement Parts Inventory

The City maintains equipment and performs weekly testing to guarantee a ready state for immediate deployment in an emergency.

Sewer Line Cleaning Equipment
▪ 1 Combination Vacuum/Hydro jet truck with capacity for clearing 800 feet of sewer or storm drain pipe (¾ inch high pressure hose)
▪ 1 Hydro Jet truck with 600 foot cleaning capacity, one inch hose ▪ Replacement leader hoses and an array of cleaning nozzles for sewer and storm drain cleaning ▪ 1 replacement spool of 400 feet of ¾ inch high pressure hose for the combination truck Light/Heavy Equipment
▪ 1 Case 580L backhoe, 1 four yard front end loader, 1 medium duty dump and flat bed truck, one 15 TON boom crane, 1 medium duty single axle-6 wheel dump truck ▪ 2 six inch diesel pumps – these pumps can be used for bypassing sewer lift stations or moving large amounts of storm water from retention basins
▪ 2 twenty three foot suction hoses
▪ 800 feet of four inch flat poly discharge hose
Sewer Lift Stations
▪ 1 replacement pump for two sewer lift stations – Poinsettia and Bell ▪ 1 replacement pump for one sewer lift station – Pacific ▪ 3 replacement pumps for three sewer lift stations – Voorhees, Palm, and Meadows ( These pumps are to be set in place on a temporary basis until repairs or replacements on permanent pumps can be done.)
▪ 1 replacement pump for Pier lift station
▪ 2 six inch check valves
▪ 1 four inch check valve
▪ 1 eight inch check valve
▪ 2 eight inch gate valves
▪ 3 sets of floats
▪ 3 transformers
▪ Replacement fuses for each station – located at each station ▪ 2 Siemens transducers for the hydroranger level controls Sewer Pipe
▪ 28 feet total of four inch clay pipe with repair couplings and 3 twenty-two and ½ degree, 5 forty-five degree and 1 ninety degree 4 inch pipe fittings and 1 eight inch by four inch Y ▪ 50 feet of six inch clay pipe with repair couplings and 7 twenty-two and ½ degree, 3 ninety degree (elbow style) 6 inch pipe fittings and 4 six inch by six inch Y’s and 3 six inch saddles ▪ 35 feet of eight inch clay pipe with repair couplings and 1 twenty-two and ½ degree, 5 forty-five degree, and 3 ninety degree 8 inch pipe fittings and 2 eight inch by eight inch Y’s and 1 eight inch T ▪ 5 feet of twelve inch clay pipe with repair couplings ▪ 7 feet of fifteen inch clay pipe with repair couplings ▪ 6 feet of eighteen inch clay pipe with repair couplings

City of Manhattan Beach SSMP

150
Appendix 4 – Wastewater Master Plan – Section 4, Criteria

SECTION 4

CRITERIA

4-1 GENERAL

Establishing performance standards is an important part of evaluating wastewater co llection systems, as it forms the basis for system analysis and system im provement recommendations. These standards include methodology for estimating wastewater design flows and minimum design standards for the collection system pipes, pump stations, and force mains.

Average wastewater flows can be reasonably estimated from land use and their corresponding unit flow factors. The results are then compared to measured flows. Peaking factors are needed for estimating peak dry weather and peak wet weather flows. Peak wet weather flows include an allowance for inflow and infiltration (I/I).

Collection system design standards include minimum pipe size, minimum flow velocity, and depth of flow to pipe diameter ratio (d/D). Pump station criteria include the capacity and number of pumps, wet well and force main sizes, redundancy, emergency power, remote moni toring capabilities, as well as safety and regulatory agency requirements. Finally, facility useful lives are needed for adequately scheduling replacement of the aging infrastructure.

4-2 FLOW MONITORING

Data collection and review is essential in developi ng unit flow factors, calibrating the system model, and estimating the ultimate average day and peak flows.

A temporary flow monitoring study was conducted by ADS Environmental Services from December 21, 2008 to March 14, 2009 at eight locations. The selected flow monitoring locations and a summary of the results are shown on Figure 4-1 and in Table 4-1. The measured flows are graphically depicted on Figure 4-2. Detailed flow monitoring data can be found in Appendix 1.

The flow monitoring sites were strategically select ed to aid in the development of unit flow factors and calibration of the model. Sites were selected in an a ttempt to get a good sampling of data across the study area. At the same time, the areas tributary to each site must generate depths of flow large enough to develop accurate wastewater flows.
4-1 City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan

!(
!(
!(
!(
!(!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!( !(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!( !(
!(!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(!(
!(
!(
!(
!(
!(
!(!(
!(
!(!(!(
!(!(!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(!(
!(
!(!(
!(!(!(
!(
!(
!(
!(
!(!(
!(
!(!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(!(!(
!(
!( !(
!( !(
!( !( !(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(!(
!(!(
!(!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(!(
!(
!(!(!(
!(
!(
!(
!( !( !(
!(
!(
!(
!(!(!(
!(
!(!(
!(
!(
!(!(!(
!(
!(
!(
!( !(
!(!(
!(
!(!(!( !(!(
!(!(
!(!( !(
!(!(!( !(!(
!(!(
!(!( !(
!(!(
!(!(!(
!(
!(
!(!(
!(
!(
!(!(
!(!(
!(
!(
!(!(
!(!(
!(!(
!(!(
!(
!(!(
!(!(!(!(!(
!(!( !(
!(
!(!(
!(!( !( !(
!(!(!(
!(!(!(
!(!(!(!(
!(!(
!(
!(
!(
!(!(!(!(!(
!(!(!(!(
!(!(
!(!(!(!(
!(!(!(!(!(!(
!( !( !( !( !(
!( !(
!( !(
!( !(
!(
!( !(!(!(!(!(!(!(!(
!(!(
!(!(!(!(!(!( !( !(
!( !(
!(
!(
!(
!( !( !(
!(
!(
!(!(
!(!(
!(
!(!(!(
!( !( !(
!(
!(
!( !( !(
!(!(
!(
!(
!(
!(
!(
!( !( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(!(!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(!(
!(!(
!(!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(!(
!(
!(!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(!(!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(!(
!(!(
!(
!(!(!(
!(
!(!(
!(
!(!(
!(!(
!(
!(
!(!(
!(
!(
!(
!(!(!(
!(
!(
!( !(
!(!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!( !(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(!(
!(!(
!(
!(
!(
!(
!(
!(
!(!(!(
!(
!(
!(
!(
!(!(
!(!(
!(
!(
!(
!(!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!( !( !(
!( !(!(!(!(
!(
!(!(
!(
!(
!(!(!(
!(
!(
!( !(
!( !(
!(
!(!(
!(
!(
!(
!(
!(!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(!(!(
!(
!(
!(
!( !( !( !( !(
!(
!(
!(
!(
!(!(
!(!(
!(
!(!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!( !(
!(
!(
!(
!( !(
!( !(!(!( !( !(
!( !( !(
!( !( !(!(
!(
!(!(
!(
!(!(
!(
!(
!(
!(
!(!(
!(
!( !(
!(
!(!(
!( !(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(!(!(
!(!(
!(!(
!( !( !( !( !(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(!(
!(
!(!(!(
!( !(
!( !( !( !(
!(
!( !(
!( !(
!(
!(
!(
!(!( !(
!( !(
!(
!(
!(
!(!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!( !(!(
!(
!(!( !(
!(
!(
!( !( !(
!( !( !( !( !(
!(
!(
!(
!(!(
!(!(!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!( !(!(
!(!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !( !( !( !(
!(
!(
!(
!(!(
!(
!(
!(!(!(
!(
!(
!( !(
!(
!(!( !(
!(
!(
!(
!(
!(
!(
!( !( !( !(
!(
!(!(
!(!(!(
!(
!(
!(
!(
!(
!(
!(
!(!(!(
!( !(!(
!(
!( !(
!(!(
!(!(
!( !(
!( !(
!( !(!( !(!(
!(!(!(
!(!(!(
!( !(
!( !( !(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!( !( !( !( !(
!(!(!(!(!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !( !(
!( !(
!( !( !(
!(
!( !( !(!( !( !(
!(
!(
!( !( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(!( !(
!(!(
!(
!(
!(!(!(
!( !(!(
!(
!(!(
!(!(!(
!( !(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!( !( !( !(
!(
!(
!( !(
!( !( !( !(
!(
!(
!(
!(
!(
!(
!(!(!(
!(!(
!(!(!(
!(
!( !(
!(
!(!(!(
!(!(!(!(
!(!(!(
!(
!(!(!(
!(!(!(
!(
!( !( !(!(!(
!(
!(
!(
!(
!(
!(
!(
!( !( !(
!(
!( !(
!( !( !( !( !( !(
!( !( !( !( !( !(
!( !( !(
!( !( !( !( !(
!( !( !( !( !(
!( !(
!(
!(
!(
!(
!( !( !( !( !( !( !(
!(
!(
!(!(
!( !(
!(
!(
!( !( !( !( !(
!(!(!(
!(!(!( !( !( !(
!( !( !(
!(
!(!(
!(
!(!(
!(
!( !( !( !(!(
!(!( !( !(!( !(
!(
!(!( !( !( !(!(
!(!(!(!( !( !( !( !( !( !(
!(
!(!(!(
!(
!(!(!(
!( !(
!(
!(
!(!(!(
!( !(
!(!(
!(!(!(!(
!( !( !( !( !(
!( !( !( !( !(
!( !( !( !(
!( !( !(!( !(
!(!(
!( !( !(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!( !(
!(
!( !(
!(!(!(!(
!(
!(
!( !( !(
!(
!(!(!(
!(!(!(
!(
!(
!(!(!( !( !( !(
!( !( !( !(!(
!(!(!( !(
!( !( !(
!(
!(
!(!(!(!(!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(!(!(!(
!(!(!(!(!(
!( !(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(!(
!(
!(
!(!(
!(
!(!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(!(!( !(!( !( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(!(
!( !(
!( !( !(
!(
!(
!(
!(
!( !( !(!(
!(!(
!(
!(
!(
!( !( !( !(
!(!(
!(!(!(
!(
!(
!(!(!(!(
!( !(
!(
!(!(
!(
!(
!(
!(
!(!(
!(
!(
!( !( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!( !( !(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!( !( !(
!(
!(!(
!( !(
!(
!(
!( !( !( !( !(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!( !(
!(
!(
!(!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !( !( !( !(
!( !( !( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !( !( !(
!(
!(
!(
!( !( !( !( !(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(!( !( !(
!(
!(!(
!(
!(
!(
!(
!(!(
!(
!(!(!( !(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(!( !(
!(
!( !(
!(!(
!(
!( !(
!(
!(
!(!(
!(
!(
!(!(
!(
!(!(
!(!(
!(!(
!(
!(!(
!(!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!( !( !( !(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(!(!(!(
!(
!(
!(
!(
!(
!(!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
#*
#*
#*
#*
#*
#*
#*
#*
#*#* !(
!(
!(
!(
!(
!(
!(
!(
City of
El Segundo
City of
Hermosa Beach
City of
Redondo Beach
City of
Hawthorne
Pacific Ocean
Marine Sports Park
Mariott
Golf Course
Manhattan
Village
Manhattan
Marketplace
Meadows
Elementary
School
Manhattan
Beach
Intermediate
School
Manhattan
Beach
Middle
School
Polliwog
Park
Manhattan
Heights Park
Mira Costa
High School
Pennekamp
Elementary
School
Pacific
Elementary
School
Robinson
Elementary School
Live
Oak
Park
Grandview
Elementary
School
Sand
Dune
Park
The Strand
The Strand
Civic
Center
City
Yard
Water
Res
Water
Res
Marine
Avenue
Park
Manhattan
Village
Park
Raleigh
Studios

LACSD PS
24-101
25-036
06-298
01-076
04-060
01-194
02-051
06-323A
Pier PS
Meadows
Ave PS
Palm
Ave
PS
Bell
Ave PS
PS
Pacific
Ave
PS
Voorhees
Ave PS
Poinsettia
Ave PS
9TH ST
8TH ST
11TH ST

OCEAN DR
2ND ST
10TH ST
6TH ST

THE STRAND

VALLEY DR

HIGHLAND AVE

ROSECRANS AVE

AVIATION BLVD

MARINE AVE

SEPULVEDA BLVD

PACIFIC AVE
27TH ST

PECK AVE

ARDMORE AVE
35TH ST

MEADOWS AVE

ROWELL AVE
19TH ST

OAK AVEELM AVE

HERRIN ST
31ST ST
5TH ST
23RD ST

POINSETTIA AVE
3RD ST

MANHATTAN BEACH BLVD

VISTA DR

HARKNESS ST

ALMA AVE
21ST ST

CREST DR
15TH ST
18TH ST

ARTESIA BLVD
1ST ST
17TH ST
36TH ST
35TH PL
36TH PL

DIANTHUS ST
31ST PL
30TH ST
33RD PL
29TH ST

BLANCHE RD
24TH ST
4TH ST

WALNUT AVE
7TH ST
26TH ST

MAPLE AVEMANHATTAN AVE

PINE AVE
20TH PL

LAUREL AVE

GATES AVE

CEDAR WAY

JOHN PL

BAYVIEW DR

CURTIS AVE
28TH ST
34TH ST

WENDY WY

JOHNSON ST

MAGNOLIA AVE

PARKVIEW AVE

NELSON AVE
33RD ST
11TH PL
12TH ST

MANZANITA LN

RUHLAND AVE

MATHEWS AVE

PACIFIC PL

DUNCAN PL

FAYMONT AVE

CARLOTTA WAY
13TH ST

LYNNGROVE DR

PALM AVE
3RD PL

VOORHEES AVE
4TH PL

JOHN ST

DUNCAN AVE

KEATS ST

KUHN DR
5TH PL

BELL AVE
16TH ST
19TH PL
6TH PL

BOUNDARY PL
25TH ST

MAGNOLIA WAY
15TH PL

HIGHVIEW AVE
16TH PL 14TH ST
18TH PL

HERRIN AVE
7TH PL

LARSSON ST

VILLAGE CIR
17TH PL
2ND PL

CEDAR AVE
8TH PL
21ST PL
1ST PL
41ST ST
38TH ST
40TH ST
44TH ST
45TH ST
39TH ST

ANDERSON ST

PROSPECT AVE

TENNYSON ST
43RD ST
42ND ST
9TH PL

FAIRWAY DR

MANOR DR
38TH PL

AGNES RD
23RD PL

REDONDO AVE

RONDA DR
22ND ST

KELP ST

GULL ST
20TH ST

CHABELA DR

CHESTNUT AVE

AVIATION WY
14TH PL

SHELL ST
27TH PL

HOMER ST

SAUSALITO CIR

MARINE PL
34TH PL
26TH PL
12TH CT
30TH PL

MORNINGSIDE DR

WESTPORT

SEAVIEW ST
29TH PL

FLOURNOY RD

AVIATION PL

EL PORTO ST
28TH PL

MARKET PLVILLAGE DR
10TH PL

DUNCAN DR

MOONSTONE ST

CHATHAM

GRANDVIEW AVE

BRIDGEPORT
24TH PL

MALAGA WY

ROSECRANS PL
11TH Pl

LAUREL SQ
13TH PL
12TH PL

CENTER PL
25TH PL

TERRAZA PL

HALEY WY
6TH PL
2ND ST
29TH ST
36TH PL
15TH ST
35TH PL

CHESTNUT AVE

ELM AVE
20TH ST
3RD ST

OAK AVE
30TH ST
12TH ST
1ST PL
3RD PL

GATES AVE
23RD PL
6TH ST

VOORHEES AVE

AGNES RD
8TH PL
2ND PL

CREST DR

BELL AVE
18TH ST
23RD ST

REDONDO AVE
35TH ST
2ND PL

WALNUT AVE
19TH ST
30TH ST
23RD PL

PECK AVE
12TH ST
1ST ST
17TH ST
35TH PL
36TH ST

JOHN ST
17TH ST
10TH ST
7TH PL
34TH PL
29TH PL
14TH ST
19TH ST
4TH PL
27TH PL
22ND ST

CURTIS AVE
27TH ST
14TH ST
26TH ST

CREST DR
5TH ST8TH ST
28TH PL
5TH ST
5TH PL
26TH PL
6TH ST
18TH ST
18TH ST
25TH ST

PALM AVE
9TH ST
11TH PL
33RD ST
28TH ST
9TH PL
21ST ST
11TH ST
33RD ST
3RD ST
1ST PL
36TH PL
23RD ST
12TH ST
13TH ST
30TH PL
3RD ST

MARINE AVE
17TH ST
33RD PL

PINE AVE
5TH ST
23RD ST
1ST ST
12TH ST
11TH PL
18TH ST
1ST ST

PINE AVE
21ST PL

POINSETTIA AVE
29TH PL
³
0 1,200 2,400600
Feet
1" = 1,200'
Flow Monitoring Site with Manhole ID
Sewer Manholes
Manhattan Beach Sewage Pump Station
LACSD Sewage Pump Station
Manhattan Beach Forcemain
Manhattan Beach Sewer
LACSD Trunk Sewer
City Boundary
Flow Monitoring Tributary Area Boundary
Low Density Residential
Medium Density Residential
High Density Residential
Downtown Commercial
Local Commercial
General Commercial
North End Commercial
Manhattan Village
Mixed-Use Commercial
Industrial
Parks / Open Space
Public Facilities
Legend
#*
!(
!(
##-###
#*
PROJECT NO: 1640901.10
DATE: September 2009

CITY OF MANHATTAN BEACH

WASTEWATER MASTER PLAN
Flow Monitoring
Locations
Figure 4-1

CRITERIA

Table 4-1
Flow Monitoring Results
Min Ave Max Min Ave Max Min Ave Max
1 01194-01195 01-194 Redondo Ave and Manhattan
Beach Blvd 18 Unit Flow Factor 422 1.8 3.9 5.9 0.3 1.9 3.4 0.017 0.367 0.987 2 06311-06323A 06-323A Marine Ave between Pine Ave
and Elm Ave 18 Calibration 516 1.9 4.7 7.2 0.9 2.2 3.3 0.071 0.572 1.329 3 04059-04060 04-060 8th St between Johnson St and
Meadows Ave 12 Unit Flow Factor 92 1.1 2.2 3.5 0.2 0.8 1.3 0.006 0.057 0.159 4 25035-25036 25-036
On the easement west of
Parkview Ave, between Park
Way and Village Dr
12 Unit Flow Factor 86 1.3 2.4 3.9 0.8 1.7 3.1 0.024 0.128 0.308 5 02051-02052 02-051
On the easement between
intersection of Wendy Way &
23rd St and Aviation Blvd
8 Unit Flow Factor 70 0.2 2.3 4.1 0.3 0.9 1.8 0.001 0.057 0.182 6 24100-24101 24-101 Marine Ave and Gateway Dr 15 Unit Flow Factor 81 1.6 3.4 5.7 0.5 1.9 3.1 0.033 0.270 0.777 7 01073-01076 01-076 Gates Ave and Herrin St 8
D/S of Voorhees PS
Forcemain & Unit
Flow Factor
118 0.4 2.8 5.9 0.1 1.9 4.6 0.001 0.163 0.553
8 06297-06298 06-298
Poinsettia Ave and Marine Ave;
downstrem of Pacific Pump
Station
8 D/S of Pacific PS
Forcemain & Unit
Flow Factor
172 0.2 1.3 3.2 1.1 5.9 11.6 0.002 0.190 0.982
Gross
Area
(Ac)
Site
ID Pipe ID
Manhole
ID Location
Flow (mgd)Pipe
Size
(in) Reason
Depth (in) Velocity (ft/s)

4-3
City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan

Wastewater Master Plan

CRITERIA

Figure 4-2
Measured Flow Data

0.000

0.100

0.200

0.300

0.400

0.500

0.600

0.700

0.800

0.900

1.000

1.100

1.200

1.300

1.400
12345678
Flow (mgd)
Flow Monitoring Site
Minimum Flow
Average Flow
Maximum Flow

4-3 UNIT FLOW FACTORS

Unit flow factors utilized in this study were devel oped based upon the existing land uses obtained from the City’s GIS, and results of the flow monitoring studies discussed in Sub-section 4-2. Water use records, aerial photographs and field reviews supplemented this information.

The average daily flow recorded at each flow monito ring site was utilized in determining calibrated existing unit flow factors for each land use, which are shown in Table 4-2. The flow factors were developed in units of gallons per day per acre.
4-4 City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan

CRITERIA
Table 4-2
Unit Flow Factors
Unit Flow Factor
(gpd/ac)
Downtown Commercial DC 1,500
General Commercial GC 1,500
High Density Residential - District 1 & 2 HDR 3,000
High Density Residential - District 3 & 4 HDR3 4,200
Industrial IND 2,000
Local Commercial LC 1,500
Low Density Residential - District 1 LDR1 1,100
Low Density Residential - District 2 LDR2 1,400
Low Density Residential - District 3 LDR3 3,800
Medium Density Residential - District 1 MDR1 1,400
Medium Density Residential - District 2 MDR2 1,600
Medium Density Residential - District 3 MDR3 4,000
Mixed-Use Commercial MUC 1,500
Manhattan Village MV 1,600
North End Commercial NEC 1,500
Parks/Open Space OS 200
Public Facilities PF 1,200
Land Use Description

4-4 PEAKING FACTORS

Peak Dry Weather

The wastewater unit flow factors discussed in Sub-section 4-3 are used to generate average dry weather flows (ADWF) entering the collection system. However, the adequacy of a sewage collection system is based upon its ability to convey the peak flow s. At any point in the system, peak dry weather flow (PDWF) is estimated by converting the total average flow upstream of the point in question to peak dry weather flow by an empirical peak-to-average relationship.

The peaking formula commonly used in sewerage studies is of the following form:

PDWF = a x ADWF

b where PDWF = Peak Dry Weather Flow
ADWF = Average Dry Weather Flow
a, b = Peaking Formula Coefficients

The temporary flow monitoring data was reviewed to develop peaking relationships at each site. As expected, these relationships varied from site to site depending upon the makeup and size of the tributary land use. Coefficient “b” is typically found to be in the range of 0.91 to 0.92 based on empirical studies.

Using a coefficient “b” of 0.92, the resulting coefficient “a” can be calculated from the measured flow data.

The calculated coefficient “a” for each flow monitoring site is shown graphically on Figure 4-3.

The following peaking relationship was selected for this study:

PDWF (mgd) = 2.35 x ADWF (mgd)

0.92 4-5 City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan

CRITERIA
Figure 4-3
Peaking Formula Coefficient “a”

0.0 0.2

0.4 0.6

0.8 1.0

1.2 1.4

1.6 1.8

2.0 2.2

2.4 2.6

2.8 3.0

3.2 3.4

3.6 3.8

4.0 4.2

4.4 4.6
12345678
Flow (mgd)
Flow Monitoring Site
Recommended
Coefficient = 2.35

It should be noted that Site 7 and Site 8 were locat ed downstream of a sewer pump station force main discharge location. The peaking coefficients are believed to be unusually high and were therefore not incorporated into the development of the recommended coefficient.

Peak Wet Weather

The peak wet weather flow (PWWF) has two component s: peak dry weather flow (PDWF) and rainfall dependent inflow/infiltration (I/I) as expressed by the following equation:

PWWF = PDWF + I/I
Inflow and infiltration is discussed further in Sub-section 4-5.

Although the flow monitoring effort for this study co vered the normal wet weather period, significant precipitation did not occur to develop what would be co nsidered peak wet weather flows. Until wet weather flow data can be collected, it is recommended that the peak wet weather flow be estimated as the following:

Peak Wet Weather Flow (PWWF) = 1.35 x Peak Dry Weather Flow (PDWF)

Although the PWWF/PDWF factor of 1.35 may not cover all situations, it is not reasonable or feasible to design the sewer system to carry the flows that would resu lt from the use of a larger ratio. Instead, it is recommended that the City concentrate on projects such as replacing manhole covers, installing plugs in manhole covers, and replacing or relining cracked pipes to reduce inflow and infiltration. 4-6 City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan

CRITERIA
4-5 INFLOW AND INFILTRATION

Inflow is the surface water that typically gains entr y to the sewer system thr ough perforated or unsealed manhole covers during rainfall events. Infiltration is def ined as water entering the collection system from the ground through defective pipes, pipe joint connections, or manhole walls. The sewer system design capacity must include allowances for these extraneous flow co mponents, which inevitably become a part of the total flow. The amount of inflow and infiltration (I/I) that enters the system typically depends upon the availability, adequacy, and location of the storm water drainage fac ilities; age and condition of st ructures; materials and methods of construction; the location of the groundwate r table; and the characteristics of the soil. In the absence of flow monitoring data, many regulatin g agencies utilize commonly accepted practices for estimating I/I. For example, I/I is often estimated ba sed on the diameter and lengt h of pipeline (100 to 400 gpd/ in. dia/ mile) or as a percentage of the peak flow or pipeline capacity.

AKM’s experience from other master planning studies and review of limited flow monitoring information available during severe rainfall events indicate that the peak wet weather flow can vary from 110 percent of peak dry weather flows in steeper areas with adequate drainage facilities, to over 200 percent of peak dry weather flows in flat areas that lack significant drainage facilities.

For this study, extraneous flow due to inflow and infilt ration is included in the peak wet weather flow formula described in Subsection 4-4. If better data becomes av ailable subsequently for sp ecific areas, the analysis should be updated based upon that information.

4-6 SEWER DESIGN CRITERIA

Design criteria are established to ensure that the wast ewater collection system can operate effectively under all flow conditions. Each pipe segment must be capable of carrying peak wet weather flows in the hydraulically stable zone of the pipe. Low flows must be conveyed at a ve locity that will prevent solids from settling and blocking the system.

The design capacity of a gravity pipeline is the calculated capacity of the pipeline based on the Manning formula:

Q = 1.486 A R
2/3 S1/2 / n where, Q = flow in cubic feet per second
R = hydraulic radius in feet = A / P
A = cross-sectional area of flow in the pipe in square feet P = wetted perimeter in feet
S = slope of pipe in feet of rise per foot of length
n = Manning’s friction factor

Sewer system capacity is established using a Manning’s friction factor of 0.013 for vitrified clay pipe.

The design and analysis of sewer pipes is typically bas ed upon the depth to diameter ratio (d/D). In this study, existing pipes are considered capacity deficient if t he d/D is above 0.64 at peak dry weather flows.

This d/D ratio was arrived at by taki ng 75 percent of a pipe’s maximum stable flow capacity, which is at a d/D of 0.82. The area above a d/D of 0.82 is considered hydraulically unstable. This provides capacity for 25 percent of peak dry weather flow for inflow and infiltration. Calculated capacity deficiencies should be verified through flow monitoring prior to replacing facilities.

4-7 City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan

CRITERIA
The extra pipeline capacity allows for the possibility that actual wastewater flows may be slightly higher than anticipated, especially during the hours when instant aneous or intermittent peaks may occur. These peaks are generally observed between the hours of 6:00 a.m. and 9:00 a.m. and 7:00 p.m. and 9:00 p.m. during weekdays and somewhat later in the morning hours durin g weekends in the predominantly residential areas.

They may also be observed during rainfall events due to inflow and infiltration. Additionally, the area above the water surface helps to keep the sewage aerated, reducing the possibility of septic conditions and odors.

For new construction, the design and analysis of gravity sewer pipes should be based on the following depth to diameter ratios:
 Pipes 12-inches and smaller in diameter shall be designed to flow at a maximum d/D of 0.50 under peak dry weather flows
 Pipes 15-inches and greater in diameter shall be designed to flow at a maximum d/D of 0.64 under peak dry weather flows
 For either group, the depth of flow to diameter ra tio shall not exceed 0.82 with peak wet weather flows

At a minimum, all pipes should be 8 inches or larger in diameter and the velocity of flow in the pipe should be greater than 2 feet per second at av erage dry weather flow (ADWF). This velocity will prevent deposition of solids in the sewer and help to resuspend any material s that may have already settled in the pipe. The minimum corresponding slopes for various pipe sizes are shown in Table 4-3.

Table 4-3
Minimum Sewer Sizes
Sewer Size 2 ft/s Velocity Slope
8" 0.0057
10" 0.0042
12" 0.0033
15" 0.0019
18" 0.0014
21" 0.0011
24" 0.0008
27" 0.0008
30" 0.0007
33" 0.0006
36" & larger 0.0005

It is imp
ortant to note that the slopes listed above assume the depth of flow in the pipe is 50 or 64 percent full.

If there is insufficient flow to create this condition, greater slopes than those shown may be required.

The peak flow velocity should be less than 10 feet per second in vitrified clay pipe and 5 feet per second in poly vinyl chloride (PVC) pipe.

4-7 PUMP STATION DESIGN CRITERIA

It is desirable to develop a sewer collection system with as few pump stations as possible due to the associated cost and maintenance required. Pump stat ions must be designed to be reliable, and sized with 4-8 City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan

CRITERIA
sufficient capacity. They must contain redundant equipment, an emergency powe r supply, bypass pumping capability, sufficient wet well storage, and be able to notify the appropriate personnel in the event of failure.

The primary components of a typical pump station ar e the wet well, motors, valves, dry well, pumps, ventilation, electrical, controls and the force main. The following general criteria are recommended.

The wet well stores the incoming wastewater until a pump is activated to discharge it to a gravity facility for further conveyance. It should be designed with sufficient capacity to prevent short cycles whereby the pumps frequently start and stop, yet small enough that it will r egularly evacuate sewage from the wet well to prevent the wastewater from becoming septic. Generally, the de sired number of pump cycles should be limited to no more that 6 per hour for motors up to 10 horsepower. Motors up to 75 horsepower should start no more than 4 times per hour. Larger motors should cycle less frequently. Pump stations should also have sufficient volume to store sewage in the event of mechanical or el ectrical failures, until the City can respond to the failure and prevent overflows. The necessary emergency storage is dependent upon how rapidly the City can respond to a failure and mitigate it. A minimum emergency storage of 30 minutes at peak wet weather flow should be provided.

The pumps should be sized to efficiently handle the peak wet weather flows. A minimum of two pumps sized at the peak wet weather flow to the station should be prov ided so that sufficient standby capacity is available when one pump is removed for repairs or experiences a mechanical failure. The pumps should be able to pass a minimum solid size of 3 inches without clog ging. The shafts, seals and impellers should be constructed of wear resistant material to provide long life. Tungsten Carbide seals, Ni-Hard impellers, and 316 stainless steel pump shafts are recommended. For services where aggressive agents may be found in the sewage, such as at golf courses, complete stainl ess steel construction is recommended. This includes the pump bowl, shaft, impeller, and motor housing.

The dry well houses the valves, pumps, motors and electrical equipment and controls. It must be well ventilated and provide unobstruct ed access to all equipment. A minimum 3-foot clearance from all obstructions should be provided. Greater clearances may be required for equipment with special maintenance needs. Provisions for equipment remova l including hatches, large door openings, and hoists should also be provided.

The force mains should be selected to operate within a 3 feet per second to 5 feet per second velocity range, but should not be smaller than 4-inches in diameter.

While submersible pump stations may be utilized for the small flows, the larger pump stations should be the wet well/dry well type. They should be designed with ea sy access to all equipment. The National Electric Code classifies the wet wells of wastewater pumping stations as Class I, Group D, Division 1 facilities if ventilated at less than 12 air changes per hour, and Divi sion 2 if continuously ventilated at 12 or more air changes per hour. Dry wells, which are physically separated from wet wells, if ventilated at less than 12 air changes per hour, are classified as Class I, Group D, Di vision 2 locations. Wet wells, and under certain circumstances dry wells, are considered confined spaces and should be entered in accordance with the corresponding requirements of Occupational Safety and Health Administration (OSHA).

All pump stations should incorporate redundant control systems for operati on of the pumps. A float system should be used as a backup for a primary control system that utilizes an ultrasonic device or a bubbler system for level measurement and pump operation.
4-9 City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan

CRITERIA
Telemetry equipment which includes a telephone dialer as a minimum, must be provided at all sewer pump stations. When an alarm or failed condition occurs, the dialer calls pre-programmed telephone numbers in sequence until the call is acknowledged, indicating response will be provided by City staff. If the alarm or failed condition is not corrected within a set time, the dialer will call the pre-programmed numbers again. The dialer can also be used to remotely check the status of the station if de sired. A summary of sewer system design criteria is listed in Table 4-4.

Table 4-4
Sewer System Criteria
Collection System
Minimum Pipe Size 8-inch
Minimum Velocity 2.0 ft/sec at average flow

3.0 ft/sec at peak dry weather flow
Pipe Depth to Diameter
Ratio for Existing Pipes

0.64 for all pipe sizes at peak dry weather flow

0.82 for all pipe sizes at peak wet weather flow
Pipe Depth to Diameter
Ratio for New
Construction

0.50 for pipes 12-inches and smaller at peak dry weather flow

0.64 for pipes 15-inches and larger at peak dry weather flow

0.82 for all pipe sizes at peak wet weather flow
Pump Stations
Pumps  Minimum 2 each sized at peak wet weather flow
 Minimum solids handling capacity 3"
Wet Wells  Sized to limit pump cycling to less than 4 to 6 times/hr  Provide sufficient storage at peak wet weather flow to allow response to a failure
 Equipment to be maintained must be accessible without entering structure
Ventilation  12 -air changes/hour minimum in dry well and as required by NFPA 820
 30-air changes/hour minimum in wet well if not operated continuously
 12-air changes/hour minimum in wet well if operated
continuously
Controls Redundant system. Float operated back-up controls.

Emergency Power Stationary source with automatic transfer switch Telemetry Dialer system at all pump stations to alert personnel in the event of a station failure.

Force Mains  Minimum velocity 3.0 ft/sec, maximum velocity 5 ft/sec.  Minimum size 4"
 Air/Vacs installed in vaults
 Plumb Air/Vac piping back to wet well to avoid discharges of raw sewage to vaults
4-10 City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan

CRITERIA
4-8 SERVICE LIFE OF PIPE AND LIFT STATION EQUIPMENT

In addition to the design criteria discussed in previous sections, the useful lives for which one can expect relatively trouble-free service is also of great importance when assessing an existing or future sewer system.

Once the service life of a facility is exceeded, it becomes subject to failure and is often expensive to maintain.

The determination of useful life can be difficult and depends on many different considerations including the following:
 Type of materials used and recorded performance of similar installations  Velocities and flow rates expected in the system
 Chemical and biological co nditions of the wastewater  Construction methods and installation

The values listed in Table 4-5 are generally accepted as prudent planning criteria and are used as benchmarks for replacement recommendations in this study.

Table 4-5
Planning Criteria for Facility Useful Life
Facility Description Useful Life (Years)
Gravity Sewers: Cast Iron Pipe (CIP) 20
Plastic Pipe 65
Vitrified Clay Pipe (VCP) 75
Force Mains: Asbestos-Cement Pipe (ACP) 40
Ductile Iron Pipe (DIP) 40
Plastic Pipe 30
Pump Stations: Structure 60
Piping 30
Valving 20
Mechanical 15
Electrical 15

4-9 CRITERIA FOR SPECIFIC PLANS AND DEVELOPMENT SUBAREAS Each party wishing to pursue development of a tract or area within the City’s study area shall develop a Sub- Area Master Plan (SAMP). The developer’s plans for providing adequate sewer service to all users within the proposed development, how the local sewer system w ill connect to the backbone and regional system, and the impact of the propos ed development to the downstream facilities (starting at the local system and extending to the regional system) shall be fully described in the SAMP. The local sub-area sewers shall meet the sewer design criteria provided in this document a nd the City Standard Drawings for Sewer Construction.

At a minimum, sewage flow calculations shall be based upon the unit flow factors described in Section 4-3, or 4-11 City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan

CRITERIA
4-12 City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan higher factors if specific conditions require it. A typical Sub-Area Sewer Master Plan Report shall include, but not be limited to the following:
 Map showing project boundaries and drainage areas
 Detailed land use description and map
 Average dry weather, peak dry weather, and peak wet weather flow calculations  Exhibit showing all proposed sewer facilities and connections to the downstream regional system  Phasing of development and wastewater flows
 Hydraulic calculations for phased and fully developed ultimate conditions, from the development to the regional system, meeting all sewer design criteria

City of Manhattan Beach SSMP

164
Appendix 5 – Wastewater Master Plan – Section 6, Existing Pump Stations

6-1 City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan SECTION 6

EXISTING PUMP STATIONS

6-1 GENERAL DESCRIPTION

The City of Manhattan Beach owns a nd operates eight (8) pump stations to lift wastewater from the lower lying areas to the local or the regional gravity systems. Table 6-1 provides general information on each pump station and Figure 6-1 shows the locations of the pump stations and their associated tributary areas and force mains. Description and planning level evaluation of each pump station are included in this section.

6-2 BELL AVENUE PUMP STATION

Location and Tributary Area

Bell Avenue Pump Station is a wet well-dry well type fa cility located on the east side of Bell Avenue between 31st Street and 31st Place. Access to the pump station, shown on Photograph 6-1, is through an access hatch above the dry well. The pump station was originally c onstructed in 1938. It was improved to its current condition in 1997.

Bell Avenue Pump Station serves a 78 acre tributary area consisting mostly of low density residential land use, with a small number of high density residential and public recreation areas. The tributary area, shown on Figure 6-2, is generally located bet ween 27th Street and Rosecrans Avenu e, east of Grandview Avenue and west of Agnes Road. The tributary land use categories are shown in Table 6-2.

Photograph 6-1 Bell Avenue Pump Station Access
6-2
City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan

Wastewater Master Plan
Table 6-1
Pump Stations
Motor Specifications
Pump Station Location
Date of
Cons.

Plan
No.

Area
Served
(Acres)
Force
Main
Dia
(in)
Force
Main
Length
(ft)
Force
Main
Material Type
Wet Well
Dimensions
Generator
Set
Number
of
Pumps
Pump
Mfg Pump Type
Pump
Model
Estimated
Flow
Capacity
(gpm) RPM Phase HP
ADWF
(gpm)
PDWF
(gpm)
PWWF
(gpm)
Bell Av enue Bell Ave between 31st St
and 31st Pl 1938
S-60
S-150
S-230
78 6 900 CIP Wetwell/
Drywell 12' x 9.5' x ~7' Diesel
Fueled 2 Flygt submersible, non-clog CT3102 263 1750 3 5 70 198 278 Palm Av enue Palm Av e south of
Rosecrans Av e 1953 S-149
S-230 39 6 775 CIP Wetwell/
Drywell 10' x 4' x ~11.5' Diesel
Fueled 2 Flygt submersible, non-clog CT3127 174 1740 3 10 38 114 159 Pacific Av enue Pacific Av e south of 31st
St 1953 S-149 103 6 1,225 CIP Wetwell/
Drywell 10' x 4' x ~11.5' Diesel
Fueled 2 Flygt submersible, non-clog CT3127 304 1740 3 10 98 269 376 Poinsettia Avenue Poinsettia Ave south of
Manhattan Beach Blvd 1949 S-227
S-145 25 4 163 CIP Wetwell/
Drywell 18.6 ft
2 x 6'-10" Diesel
Fueled 2 Flygt submersible, non-clog CT3102 136 NA 3 NA 19 60 85 Meadows Avenue Meadows Ave south of
9th St 1953 S-148
S-230 99 6 730 CIP Wetwell/
Drywell 10' x 4' x ~11.5' Diesel
Fueled 2 Flygt submersible, non-clog CT3127 304 1740 3 10 77 216 303 Voorhees Avenue Voorhees Ave at Rowell
Av e 1953 S-148
S-230 103 6 1,321 CIP Wetwell/
Drywell 10' x 4' x ~11.5' Diesel
Fueled 2 Flygt submersible, non-clog CT3127 227 1740 3 10 90 250 350 Civic Center Highland Ave south of
15th St 1992 - Civic Center
Bulding - - - Submersible - - 2 - - - - - - - - - -
Pier End of Manhattan Beach
Pier 1992 - Pier
Restaurant 4 - CIP Submersible 4' x 4' x 4' - 2 - submersible - - - - 3 - - - General Pump Station Information Pump Specifications Estimated Flows !(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!( !(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(!(
!(!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!( !(
!( !(
!( !( !(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(!(
!(
!(
!(!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(!(!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(!(!(
!(
!(!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(!( !(!(
!(!(
!(!( !(
!(
!(!( !(!(
!(!(
!(
!( !(
!(!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(!(!(
!(!(
!(!( !(
!(
!(!(
!(!( !( !(
!(!(!(
!(!(!(
!(!(!(!(
!(!(
!(
!(
!(
!(!(!(!(!(
!(!(!(!(
!(!(
!(!(!(!(
!(!(!(!(!(!(
!( !( !( !( !(
!( !(
!( !(
!( !(
!(
!( !(!(!(!(!(!(!(!(
!(!(
!( !(!(!(!(!( !( !(
!( !(
!(
!(
!(
!( !(
!(
!(
!(
!(!(
!(!(
!(
!(!(!(
!( !( !(
!(
!(
!( !( !(
!(!(
!(
!(
!(
!(
!(
!( !( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(!(!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(!(
!(!(
!(
!(!(!(
!(
!(
!(
!(
!(!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(!(!(
!(
!(
!( !(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!( !(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(!(
!(!(
!(
!(
!(
!(!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!( !( !(
!( !(!(!(!(
!(
!(!(
!(
!(
!(!(!(
!(
!(
!( !(
!( !(
!(
!(!(
!(
!(
!(
!(
!(!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(!(!(
!(
!(
!(
!(
!( !( !( !(
!(
!(
!(
!(
!(!(
!(!(
!(
!(!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!( ! (
!(
!(
!(
!( !(
!( !(!(!( !( !(
!( !( !(
!( !( ! (!(
!(
!(!(
!(
!(!(
!(
!(
!(
!(
!(!(
!(
!( !(
!(
!(!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(!(
!(
!(
!( !( !( !( !(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(!(
!(
!(!(!(
!( !(
!( !( !( !(
!(
!( !(
!( !(
!(
!(
!(
!(!( !(
!( !(
!(
!(
!(
!(!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!( !(!(
!(
!(!( !(
!(
!(
!( !( !(
!( ! ( !( !( !(
!(
!(
!(
!( !(
!(!(!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!( !(!(
!(!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !( ! ( !( !(
!(
!(
!(
!(!(
!(
!(
!(!(!(
!(
!(
!( !(
!(
!(!( !(
!(
!(
!(
!(
!(
!(
!( !( !( !(
!(
!(!(
!(!(!(
!(
!(
!(
!(
!(
!(
!(
!(!(!(
!( !(!(
!(
!( !(
!(!(
!(!(
!( !(
!( !(
!( !(!( !(!(
!(!(!(
!(!(!(
!( ! (
!( !( !(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!( !( !( !( !(
!(!(!(!(!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !( ! (
!( !(
!( !( !(
!(
!( !( ! (!( ! ( !(
!(
!(
!( !( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(!( !(
!(!(
!(
!(
!(!(!(
!( !(!(
!(
!(!(
!(!(!(
!( ! (
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!( ! (
!(
!( !( !( !(
!(
!(
!( !(
!( !( !( !(
!(
!(
!(
!(
!(
!(
!(!(!(
!(!(
!(!( !(
!(
!( !(
!(
!(!(!(
!(!(!(!(
!(!(!(
!(
!(!(!(
!(!(!(
!(
!( !( !(!(!(
!(
!(
!(
!(
!(
!(
!(
!( !( ! (
!(
!( !(
!( !( !( !( !( !(
!( !( !( !( !( !(
!( !( !(
!( !( !( !( !(
!( !( !( ! ( !(
!( !(
!(
!(
!(
!(
!( !( !( !( !( !( !(
!(
!(
!(!(
!( !(
!(
!(
!( !( !( !( !(
!(!(!(
!(!(!( !( ! ( !(
!( !( !(
!(
!(!(
!(
!(!(
!(
!( !( !( !(!(
!(!( !( !(!( !(
!(
!(!( !( !( !(!(
!(!(!(!( !( !( !( !( !( !(
!(
!(!(!(
!(
!(!(!(
!( !(
!(
!(
!(!(!(
!( !(
!(!(
!(!(!(!(
!( !( !( !( !(
!( !( !( !( !(
!( !( !( !(
!( !( !(!( !(
!(!(
!( !( !(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!( !(
!(
!( !(
!(!(!(!(
!(
!(
!( !( ! (
!(
!(!(!(
!(!(!(
!(
!(
!(!(!( !( ! ( !(
!( !( !( !(!(
!(!(!( !(
!( ! ( !(
!(
!(
!(!(!(!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(!(!(!(
!(!(!(!(!(
!( !(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(!(
!(
!(
!(!(
!(
!( !(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(!(!( ! (!( !( ! (
!(
!(
!(
!(
!(
!(
!(
!(
!(!(!(
!( !(
!( ! ( !(
!(
!(
!(
!(
!( !( !(!(
!(!(
!(
!(
!(
!( !( ! ( !(
!(!(
!(!(!(
!(
!(
!(!(!(!(
!( !(
!(
!(!(
!(
!(
!(
!(
!(!(
!(
!(
!( ! ( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!( !( !(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!( !( !(
!(
!(
!(
!( !(
!(
!(
!( !( !( !( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!( !(
!(
!(
!(!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !( ! ( !( !(
!( !( !( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !( !(
!(
!(
!(
!( !( !( !( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(!( ! ( !(
!(
!(!(
!(
!(
!(
!(
!(!(
!(
!( !(!( !(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!( !(
!(
!( !(
!(!(
!(
!( !(
!(
!(
!(!(
!(
!(
!(!(
!(
!(!(
!(!(
!(
!(
!(
!(!(
!(!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!( ! ( !( !(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(!(!(
!(
!(
!(
!(
!(
!(!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
#*
#*
#*
#*
#* #*
#*
#*
#*
#*
City of El Segundo
City of
Hawthorne
City of
Redondo
Beach
City of Hermosa
Beach
Pacific Ocean
Pier PS
Civic
Center PS

LACSD PS
Palm
Ave PS
Pacific
Ave PS
Poinsetta
Ave PS
Meadows
Ave PS
Voorhees
Ave PS
Bell
Ave PS
9TH ST
8TH ST
11TH ST

OCEAN DR
2ND ST
10TH ST
6TH ST

THE STRAND

VALLEY DR

HIGHLAND AVE

ROSECRANS AVE

AVIATION BLVD

MARINE AVE

SEPULVEDA BLVD

PACIFIC AVE
27TH ST

PECK AVE
35TH ST

ARDMORE AVE

MEADOWS AVE
19TH ST

ROWELL AVE

OAK AVE

ELM AVE

HERRIN ST
31ST ST
5TH ST
23RD ST

POINSETTIA AVE
3RD ST

MANHATTAN BEACH BLVD

VISTA DR

HARKNESS ST
21ST ST

ALMA AVE
15TH ST

CREST DR
18TH ST

ARTESIA BLVD
1ST ST
17TH ST
36TH ST
35TH PL
36TH PL

DIANTHUS ST
30TH ST
31ST PL
29TH ST
33RD PL
24TH ST

BLANCHE RD
4TH ST

WALNUT AVE
7TH ST
26TH ST

PINE AVE
20TH PL

MAPLE AVE

MANHATTAN AVE

LAUREL AVE

GATES AVE

CEDAR WAY
28TH ST

BAYVIEW DR
34TH ST

JOHN PL

CURTIS AVE

WENDY WY
32ND ST

JOHNSON ST

MAGNOLIA AVE

PARKVIEW AVE

NELSON AVE
33RD ST
12TH ST
11TH PL

MANZANITA LN

RUHLAND AVE

MATHEWS AVE

PACIFIC PL

DUNCAN PL

FAYMONT AVE
13TH ST

CARLOTTA WAY

LYNNGROVE DR

VOORHEES AVE
3RD PL

PALM AVE
4TH PL

JOHN ST

DUNCAN AVE

KUHN DR

KEATS ST
5TH PL
16TH ST

BELL AVE
25TH ST
6TH PL

BOUNDARY PL

MAGNOLIA WAY

HIGHVIEW AVE
14TH ST

HERRIN AVE
18TH PL
7TH PL

LARSSON ST
2ND PL

VILLAGE CIR

CEDAR AVE
8TH PL
21ST PL
41ST ST
38TH ST
1ST PL
44TH ST

TENNYSON ST

ANDERSON ST
9TH PL

FAIRWAY DR

MANOR DR

AGNES RD
23RD PL
22ND ST

REDONDO AVE

RONDA DR
20TH ST

AVIATION WY
14TH PL

HOMER ST
27TH PL

SAUSALITO CIR
12TH CT

MARINE PL
26TH PL

PARK PL

MORNINGSIDE DR

GATEWAY DR

FRANCISCO ST

SEAVIEW ST

AVIATION PL

EL PORTO ST
10TH PL

VILLAGE DR
12TH PL

ARDMORE WY

CENTER PL
25TH PL

VILLA ESCUELA

HALEY WY
27TH WAY

CATALINA CT

INGLESIDE DR

BERMUDA CT

MARIN CT
36TH ST
30TH ST
6TH ST

WALNUT AVE
2ND PL
23RD ST

POINSETTIA AVE
14TH ST
33RD PL

JOHN ST
14TH ST

ELM AVE
3RD ST

OAK AVE

GATES AVE
21ST ST
12TH ST
17TH ST

VOORHEES AVE
33RD ST
19TH ST
PECK AVE 18TH ST
15TH ST
12TH ST

REDONDO AVE
36TH PL

PALM AVE
1ST ST

AGNES RD
30TH ST

BELL AVE
21ST PL
5TH ST
23RD ST
18TH ST
28TH ST
26TH ST
15TH ST
18TH ST
17TH ST
5TH ST

LAUREL AVE
4TH PL
19TH PL
6TH PL
15TH PL
16TH PL
17TH PL
2ND PL
8TH PL
40TH ST
45TH ST
39TH ST
43RD ST
42ND ST

PROSPECT AVE
38TH PL

KELP ST

GULL ST

CHESTNUT AVE

CHABELA DR

SHELLEY ST

SHELL ST
34TH PL
34TH PL
34TH PL
34TH PL

MARINE PL

MARINE PL
26TH PL
30TH PL
30TH PL
30TH PL
30TH PL
32ND PL
32ND PL
32ND PL
32ND PL

MORNINGSIDE DR

WESTPORT

LONGFELLOW DR

LONGFELLOW DR
29TH PL
29TH PL
29TH PL
29TH PL

FLOURNOY RD

FLOURNOY RD
28TH PL
28TH PL
28TH PL
28TH PL

VILLAGE CENTER DR

MARKET PL
10TH PL
10TH PL
10TH PL

PARK WY

FISHER AVE

DUNCAN DR

MOONSTONE ST

ALTURA WY

CHATHAM

GRANDVIEW AVE

BRIDGEPORT
24TH PL
24TH PL
24TH PL
24TH PL

ROSECRANS PL

MALAGA WY

RAILROAD PL

CARRIAGE PL

EVERGREEN LN
11TH Pl

DEEGAN PL

LAUREL SQ
31ST WAY
13TH PL
13TH PL
12TH PL
25TH PL

TERRAZA PL

CHURCH ST

CAMBRIDGE

CAMINO CARDINELL

DOVER PL

MALAGA PLE

MALAGA PLW

ARBO LADO CT

HOMER PL

INGLESIDE DR

STRATFORD LAGUNA CT

BRYANT PL

CORONADO CT

CAYMAN CT
PACIFIC Pl

GRENADA CTSANTA CRUZ CT

MONTEREY CT

NANTUCKET PL

TIBURON CT

SANTA ROSA CT

PORTSMOUTH WY

CORDOBA CT

SAN MIGUEL CTLAFAYETTE CT
1ST PL
17TH ST
1ST PL

PINE AVE
13TH ST
5TH ST

BAYVIEW DR
7TH PL
29TH ST

HOMER ST
5TH PL
33RD ST
33RD PL
33RD PL
14TH ST
12TH PL
3RD PL
27TH PL
12TH ST

MARINE PL
8TH PL

PACIFIC PL

MARINE AVE
22ND ST
18TH ST
35TH PL

CREST DR
4TH PL
19TH ST
1ST PL
2ND PL
36TH PL
23RD ST
1ST ST
7TH PL
9TH PL
11TH ST

VISTA DR
35TH PL

MANHATTAN AVE
36TH PL
9TH ST
8TH ST
20TH ST
2ND ST
23RD PL
25TH PL

CREST DR
12TH ST
27TH ST
3RD ST

PINE AVE
10TH ST

CURTIS AVE
35TH ST

BAYVIEW DR
11TH PL
31ST PL

CREST DR

CREST DR
11TH PL

MARINE PL
25TH STBAYVIEW DR

CENTER PL
6TH ST

BELL AVE
23RD PL
3RD ST
31ST ST
35TH PL
23RD PL
1ST PL
18TH ST
9TH PL
1ST ST
3RD PL
21ST ST
3RD ST
31ST PL
33RD PL
36TH PL
31ST PL
35TH PL
14TH ST
33RD ST
31ST PL
5TH PL
6TH PL
23RD PL
³
0 1,200 2,400600
Feet
1" = 1,200'
Legend
#*
#*
Sewer Manholes
Manhattan Beach Sewage Pump Station
LACSD Sewage Pump Station
Manhattan Beach Forcemain
Manhattan Beach Sewer
LACSD Trunk Sewer
City Boundary
Bell Pump Station Tributary Area
Meadows Pump Station Tributary Area
Pacific Pump Station Tributary Area
Palm Pump Station Tributary Area
Poinsettia Pump Station Tributary Area
Voorhees Pump Station Tributary Area
PROJECT NO: 1640901.10
DATE: September 2009

CITY OF MANHATTAN BEACH

WASTEWATER MASTER PLAN
Pump Station
Tributary Areas
Figure 6-1
#*
#*
#*
#*
#*
#*
#*
#*
#*#
Bell
Ave PS
6" CIP Forcemain
Pacific Avenue Pump Station

VISTA DR

OCEAN DR

ALMA AVE

CREST DR
31ST ST
35TH ST
23RD ST

ROSECRANS AVE

THE STRAND
33RD ST
27TH ST
36TH ST
35TH PL
36TH PL
31ST PL

HIGHLAND AVE
30TH ST
33RD PL
29TH ST

BLANCHE RD
24TH ST

MARINE AVE
26TH ST

LAUREL AVE

MANHATTAN AVE

FLOURNOY RD

VALLEY DR

BAYVIEW DR
28TH ST
34TH ST

AGNES RD
32ND ST
19TH ST

BELL AVE

ARDMORE AVE
25TH ST
21ST ST
21ST PL
38TH ST
23RD PL
27TH PL

MARINE PL
26TH PL
30TH PL
32ND PL
39TH ST
29TH PL
28TH PL

GRANDVIEW AVE
24TH PL

ARDMORE WY
25TH PL
31ST ST
27TH PL
36TH PL
26TH PL

LAUREL AVE
33RD ST
35TH PL

MARINE PL
35TH PL
35TH ST
24TH PL

BELL AVE
36TH PL
25TH ST
26TH ST
36TH PL

BELL AVE
21ST PL
31ST PL

FLOURNOY RD
23RD PL
23RD PL
PROJECT NO: 1640901.10
DATE: September 2009

CITY OF MANHATTAN BEACH

WASTEWATER MASTER PLAN
Bell Ave Pump Station
Tributary Area
Figure 6-2
³
0 250 500125
Feet
1" = 500'
Legend
Landuse
#*
#*
Sewer Manholes
Manhattan Beach Sewage Pump Station
LACSD Sewage Pump Station
Manhattan Beach Forcemain
Manhattan Beach Sewer
LACSD Trunk Sewer
City Boundary
Bell Avenue Pump Station Tributary Area
!(
Low Density Residential
Medium Density Residential
High Density Residential
Downtown Commercial
Local Commercial
General Commercial
North End Commercial
Manhattan Village
Mixed-Use Commercial
Industrial
Parks / Open Space
Public Facilities

EXISTING PUMP STATIONS

6-5 City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan Table 6-2
Bell Avenue Pump Station Tributary Land Uses
Influent Sewer
The wastewater generated within the tributary
area is conveyed to the pump station wet well by
two gravity sewers. A 10-inch sewer on Bell
Avenue brings flows from the south and an 8-inch
sewer on Bell Avenue conveys flows from the
north. They then confluence into one 10-inch
sewer that enters the wet well from the east with
an invert elevation of 53.80 feet.

Wet Well

The existing wet well (Photograph 6-2) is a 12’-0”
long and 9’-6” feet wide rectangular unlined
reinforced concrete structure, located directly south
of the dry well. Access to the wet well is through a
17” x 24” square hatch at ground level.

The bottom elevation of the wet well is 51.44 feet
amsl. A fillet starting at elevation 52.53 feet amsl
along the southerly wall slopes to elevation 51.44
feet amsl towards the northerly wall over 9 feet. 6-
inch pump suction pipes exit the wet well with an
invert elevation of 51.91 feet amsl and extend about
20 inches north where they enter the dry well.

Significant exposed aggregate indicates concrete
corrosion due to hydrogen sulfide generated by the wastewater. A basket is located below the influent pipe at the wet well to intercept rags and other debris/non-disp ersible material. City maintenance crews visit the pump station twice a week (Monday & Friday) to clean out the debris from the basket.

The wet well has 512 gallons of operational storage bet ween the pump start and stop levels, which indicates maximum cycling of 7 to 8 times per hour. Since the pum p start level is the same as the influent sewer invert elevation, Bell Avenue Pump Station has no emergency storage.

Dry Well

The dry well is a 9’-0” long and 9’-6” wide rectangular reinforced concrete structure located north of the wet well. Its top slab is at elevation 65.80 feet amsl. T he bottom elevation of the dry well is at 51.03 feet amsl.

The pumps are located 2’-6” and 5’-4” from the easterly wall. The floor slopes towards the southwest corner of the dry well where a sump pump is located. The sump pump conveys any leakage and wash water back to the wet well through a 1-¼” discharge pipe. Access to the dry well is through a 5’-0” x 2’-6” rectangular hatch at ground level and stairs.

Photograph 6-2 Bell Avenue Pump Station Wet Well
Land Use Description
Number of
Parcels
Total Area
(ac)
Low Density Residential 487 56.7
Medium Density Residential 16 1.3
High Density Residential 3 0.3
Parks / Open Space 1 5.2
Public Facilities 3 14.7
Total 510 78.2

EXISTING PUMP STATIONS

6-6 City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan Suction Piping
The suction pipes extend through the wet well wall, and connect to 6-inch isolation pinch valves in the dry well. Then they connect to a spool and a 6” x 4”
reducer before terminating at the suction elbow of
the pumps.

Discharge Piping

The discharge piping for each pump starts at the
discharge nozzle with a 6” x 4” flanged 90 degree
reducing bend and a 6-inch swing check valve in
the vertical run, followed by a 6-inch isolation
pinch valve, a spool extending up with a flexible
coupling, and a 6-inch 90 degree elbow that
connects to the 6-inch discharge header. The
discharge header (Photograph 6-3) exits the dry
well through the easterly wall toward Bell Avenue.

Forcemain

The forcemain is a 6-inch cast iron pipe. It convey s the sewage from an avera ge wet well elevation of 52.68 feet amsl to a discharge elevat ion of 68.00 feet amsl. The forcemain turns south on Bell Avenue and discharges to a City sewer manhole at the intersection of Bell Avenue and 27 th Street. The downstream sewer is an 8-inch VCP extending further south on Bell Avenue. The total length of the forcemain is about 900 feet. It was constructed in 1938.

Based on the existing pump capacity of 263 gpm, the forcemain velocity is 3.0 fps, which is within the recommended velocity range of 3 to 5 fps.

Pumps

Bell Avenue Pump Station has two (2) FLYGT
wastewater pumps (Model CT3102) with non-clog
impellers. One of the pumps is shown on
Photograph 6-4. The pump s are driven by 5 HP
motors.

The existing pump capacity based on SCADA
information from April 6, 2009 is approximately 263
gpm. The pumps start 4 to 6 times per hour during
morning peak hours (5:00 am – 9:00 am).

Photograph 6-4 Bell Avenue Pump Station Pumps
Photograph 6-3 Bell Avenue Pump Station Discharge Header

EXISTING PUMP STATIONS

6-7 City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan Electrical and Controls
The Bell Avenue Pump Station is powered by a
100 amp, 460 volt, 3 phase, 3 wire service. The
pump station operation is controlled by the wet
well water level, which is determined by an
ultrasonic level sensor. The pumps alternate and
start when the level rises to about 2.4 feet above
the wet well floor and stop when the level drops to
about 1.8 feet above the wet well floor.

Tributary Flows

The average dry weather flow calculated by land
use and unit flow factors is 70 gpm. The
associated peak dry w eather flow and peak wet
weather flow are 198 gpm and 278 gpm, respectively. The peak dry weather flow based on the April 6, 2009 SCADA information is approximately 160 gpm.

Recommendations

The existing pump capacity is approximately 265 gpm, based upon SCADA data and wet well dimensions.

Therefore, the firm pumping capacity is somewhat lo wer than the estimated peak wet weather flow of 278 gpm. Because the pump station has no emergency storage, the existing pumps should be replaced with 300 gpm capacity pumps.

Emergency storage of 8,400 gallons, as well as operating volume of 1,150 gallons should be provided. This may require the construction of a new station with a lowe r bottom elevation, and inco rporation of the existing structure into emergency storage, which would provide approximately 3,400 gallons.

The forcemain should be replaced with a new 6-inch pipe when the pump station is improved.

6-3 PALM AVENUE PUMP STATION

Location and Tributary Area

Palm Avenue Pump Station is a wet well-dry well
facility located at 3529 Palm Avenue south of
Rosecrans Avenue. Access to the pump station,
shown on Photograph 6-6, is through a hatch
above the dry well, on the westerly sidewalk of
Palm Avenue. The pump station was originally
constructed in 1953. It was improved to its current
condition in 1997.

Palm Avenue Pump Station serves a 39 acre
tributary area consisting of low density residential
and general commercial land uses. The tributary
Photograph 6-6 Palm Avenue Pump Station Access
Photograph 6-5 Bell Avenue Pump Station Control Panel

EXISTING PUMP STATIONS

6-8 City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan area is illustrated on Figure 6-3. The tributary land use categories are shown in Table 6-3.

Table 6-3 Influent Sewer
Palm Avenue Pump Station Tributary Land Uses
The wastewater generated within the tributary
area is conveyed to the pump station wet well by
two 8-inch gravity sewers, one from the south, and
another from the north. They confluence at a
manhole just east of the pump station, and enter
the wet well as 10-inch sewer with an invert
elevation of 81.90 feet amsl.

Wet Well

The existing wet well (Photograph 6-7) is a 10’-0”
long and 4’-0” wide rectangular unlined reinforced
concrete structure, located directly east of the dry
well. Access to the wet well is through a 30-inch
diameter manhole on Palm Avenue at street level.

The bottom elevation of the wet well is 78.10 feet
amsl at the westerly wall. Two 6-inch suction pipes
extend through the wet well wall into the dry well
with invert elevations of 78.10 feet amsl.

Significant exposed aggregate indicates concrete
corrosion due to hydrogen sulfide generated by the
wastewater. There is a basket at the terminus of
the influent pipe to intercept rags and other debris/non-di spersible material. City maintenance crew visits the pump station twice a week (Monday & Friday) to clean out the rags from the basket.

The wet well has 226 gallons of operational storage between the pump start level (2.66 ft above wet well floor) and stop level (1.91 ft above wet well floor). Em ergency storage available is 344 gallons. Currently wet well has only 2.1 minutes of emergency storage during peak wet weather flow of 159 gpm.

Dry Well

The dry well is a 10’-6” long and 10’-0” wide rectangular reinforced concrete structure located to the west of the wet well. Its top slab is at elev ation 90.62 feet amsl. The bottom elevat ion of the dry well is at 76.97 feet amsl. The pumps are located 3’-0” and 7’-0” from the southerly wall. The floor slopes towards the middle of the easterly wall of the dry well where the sump pump is located. The sump pump conveys any leakage and wash water back to the wet well through a 1- ¼” discharge pipe. Access to the dry well is through a 30” x 60” rectangular hatch, located at ground level on the wester ly sidewalk of Palm Avenue. A ladder leads down to each of the two levels of the dry well.

Land Use Description
Number of
Parcels
Total Area
(ac)
Low Density Residential 335 38.2
General Commercial 2 1.2
Total 337 39.4
Photograph 6-7 Palm Avenue Pump Station Wet Well
#*
#*
#*
#*
#*
#*
#*
#*
#*
#
Pacific
Ave PS
Palm
Ave PS
6" CIP Forcemain
6" CIP
Forcemain27TH ST
35TH ST
31ST ST

VALLEY DR

ROSECRANS AVE

PALM AVE

PACIFIC AVE

MAPLE AVE

LAUREL AVE

ARDMORE AVE

FLOURNOY RD
35TH PL
36TH ST
30TH ST
29TH ST
26TH ST
33RD ST

MARINE AVE

AGNES RD
31ST PL
36TH PL
33RD PL

SEPULVEDA BLVD

PINE AVE

WALNUT AVE

POINSETTIA AVE
25TH ST

ELM AVE

OAK AVE
23RD ST
28TH ST

JOHN ST PALM AVE

PINE AVE

LAUREL AVE
30TH ST

MARINE AVE

WALNUT AVE

ELM AVE
33RD ST

POINSETTIA AVE

OAK AVE
PROJECT NO: 1640901.10
DATE: September 2009

CITY OF MANHATTAN BEACH

WASTEWATER MASTER PLAN
Palm Ave Pump Station
Tributary Area
Figure 6-3
³
0 200 400100
Feet
1" = 400'
Legend
Landuse
#*
#*
Sewer Manholes
Manhattan Beach Sewage Pump Station
LACSD Sewage Pump Station
Manhattan Beach Forcemain
Manhattan Beach Sewer
LACSD Trunk Sewer
City Boundary
Palm Avenue Pump Station Tributary Area
!(
Low Density Residential
Medium Density Residential
High Density Residential
Downtown Commercial
Local Commercial
General Commercial
North End Commercial
Manhattan Village
Mixed-Use Commercial
Industrial
Parks / Open Space
Public Facilities

EXISTING PUMP STATIONS

6-10 City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan Suction Piping
The suction pipes start at the wet well bottom,
extend through the wet well wall and connect to
6-inch isolation pinch valves. Then they connect
to a spool before terminating at the suction elbow
of the pump.

Discharge Piping

The discharge piping for each pump starts at the
discharge nozzle with a 6-inch flanged 90 degree
bend and a 6-inch swing check valve in the
vertical run, followed by a 6-inch isolation pinch
valve, a spool extending up, a flexible coupling,
and a 6-inch 90 degree elbow that connects to
the 6-inch discharge header. The discharge
header (Photograph 6-8) exits the dry well
through the southerly wall.

Forcemain

The forcemain is a 6-inch cast iron pipe. It convey s the sewage from an avera ge wet well elevation of 79.02 feet amsl to a discharge elevation of 118.42 feet amsl. The forcemain exits the dry well through the southerly wall of the pump station, follows Palm Avenue south and discharges to a City sewer manhole on Palm Avenue, north of 31st Street. The total length of the forcemain is 775 feet. It was constructed in 1953.

Based on the existing pump capacity of 174 gpm, the forc emain velocity is 2.0 fps, which is less than the recommended velocity range of 3 to 5 fps.

Pumps

Palm Avenue Pump Station has two (2) FLYGT
wastewater pumps (Model CT3127) with non-clog
impellers. They are driven by 10 HP motors. The
existing pump capacities are 167 gpm and 181
gpm, based on SCADA information from April 6,
2009. The existing firm capacity of 167 gpm is
greater than the estimated peak wet weather flow
of 159 gpm. The pumps start 5 to 8 times per hour
during morning peak hours (5:00 am – 9:00 am).

Electrical and Controls

The Palm Avenue Pump Station is powered by a
100 amp, 460 volt, 3 phase, 3 wire service. The
pump station operation is controlled by the wet well
Photograph 6-9 Palm Avenue Pump Station Control Panel
Photograph 6-8 Palm Avenue Pump Station Discharge Header

EXISTING PUMP STATIONS

6-11 City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan water level, which is determined by an ultrasonic
level sensor. The pumps alternate and start
when the level rises to about 2.6 to 2.8 feet
above the wet well floor and stop when the level
drops to about 1.8 to 2.1 feet above the wet well
floor.

A 25 kVA diesel generator (Photograph 6-10) is
located at the bottom level of the dry well
adjacent the pumps.

Tributary Flows

The average dry weather flow calculated by land
use and unit flow factors is 38 gpm. The
associated peak dry weather and peak wet
weather flows are 114 gpm and 159 gpm, respec
SCADA information is approximately 83 gpm.

Recommendations
tively. The peak dry weather flow based on the April 6, 2009

The existing firm capacity of 167 gpm is greater th an the estimated peak wet weather flow of 159 gpm.

Therefore, Palm Avenue Pump Station has adequate pumping capacity.

Emergency storage of 4,800 gallons, as well as operati ng volume of 700 gallons should be provided. This may require the construction of a new station with a lowe r bottom elevation, and inco rporation of the existing structure into emergency storage, which would provide approximately 3,200 gallons.

The forcemain should be replaced with a new 4-inch pipe when the pump station is improved.

6-4 PACIFIC AVENUE PUMP STATION

Location and Tributary Area

Pacific Avenue Pump Station is a wet well-dry
well type facility located on Pacific Avenue
south of 31
st Street. Access to the pump
station, shown on Photograph 6-11, is through a
access hatch above the dry well on the westerly
sidewalk of Pacific Avenue. It was constructed
in 1953, and retrofitted in 1997.

Pacific Avenue Pump Station serves a 103 acre
tributary area consisting of low density
residential, medium density residential and
general commercial land uses. The tributary
area is shown on Figure 6-4. The tributary land use categories are shown in Table 6-4.

Photograph 6-10 Palm Avenue Pump Station Generator
Photograph 6-11 Pacific Avenue Pump Station Access
#*
#*
#*
#*
#*
#*
#*
#*
#*#
Bell
Ave PS
6" CIP Forcemain
Pacific
Ave PS
Palm
Ave PS
6" CIP Forcemain
6" CIP
Forcemain27TH ST
35TH ST

VALLEY DR
31ST ST
19TH ST

PACIFIC AVE

ARDMORE AVE
33RD ST
36TH ST
35TH PL
36TH PL
31ST PL
30TH ST
33RD PL
29TH ST

BLANCHE RD
PALM AVE26TH ST

MAPLE AVE

SEPULVEDA BLVD

MARINE AVE

LAUREL AVE

FLOURNOY RD
23RD ST

AGNES RD

PINE AVE
24TH ST
21ST ST

WALNUT AVE

BELL AVE

POINSETTIA AVE

JOHN ST
25TH ST

ELM AVE
21ST PL
23RD PL

OAK AVE

VISTA DR
28TH ST

GRANDVIEW AVE

ARDMORE WY
33RD ST

LAUREL AVE

MARINE AVE

AGNES RD

FLOURNOY RD
21ST PL
36TH PL

PINE AVE

WALNUT AVE

PALM AVE
30TH ST

BELL AVE
26TH ST

BELL AVE
23RD ST

PINE AVE

POINSETTIA AVE

ELM AVE

OAK AVE
PROJECT NO: 1640901.10
DATE: September 2009

CITY OF MANHATTAN BEACH

WASTEWATER MASTER PLAN
Pacific Ave Pump Station
Tributary Area
Figure 6-4
³
0 250 500125
Feet
1" = 500'
Legend
Landuse
#*
#*
Sewer Manholes
Manhattan Beach Sewage Pump Station
LACSD Sewage Pump Station
Manhattan Beach Forcemain
Manhattan Beach Sewer
LACSD Trunk Sewer
City Boundary
Pacific Avenue Pump Station Tributary Area
!(
Low Density Residential
Medium Density Residential
High Density Residential
Downtown Commercial
Local Commercial
General Commercial
North End Commercial
Manhattan Village
Mixed-Use Commercial
Industrial
Parks / Open Space
Public Facilities

EXISTING PUMP STATIONS

6-13 City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan Table 6-4 Influent Sewer
Pacific Avenue Pump Station Tributary Land Uses
The wastewater generated within the tributary area
is conveyed to the pump station wet well by two 8-
inch gravity sewers on Pacific Avenue, one from the
south and another from the north. The two sewers
confluence at a manhole east of the wet well, and a
10-inch sewer enters the wet well with an invert
elevation of 79.66 feet amsl.

Wet Well

The existing wet well (Photograph 6-12) is a 10’-0”
long and 4’-0” wide rectangular unlined reinforced
concrete structure, locat ed directly east of the dry
well. Access to the wet well is through a 30-inch
diameter manhole on Pacific Avenue at street
level.

The bottom elevation of the wet well is 73.85 feet
amsl at the westerly wall. Two pump suction
pipes, 6-inch in diameter, exit the wet well with an
invert elevation of 73.85 feet amsl and extend into
the dry well.

The wet well has 305 gallons of operational
storage between the pump start and stop levels.

Pumps cycled 8 to times per hour during the peak flow period of 6:00 am and 8:00 am on April 6, 2009.

Dry Well

The dry well is a 10’-6” long and 10’-0” wide rectangular reinforced concrete structure located to the west of the wet well. Its top slab is at elev ation 86.37 feet amsl. The bottom elevat ion of the dry well is at 72.72 feet amsl. The pumps are located 3’-0” and 7’-0” from the southerly wall. The floor slopes towards the middle of the eastern wall of the dry well where the sump pump is located. The sump pump conveys any leakage and wash water back to the wet well through a 1-¼” discharge pipe. Access to the dry well is through a 30” x 60” rectangular hatch, located at ground level on the westerly sidewalk of Pacific Avenue. A ladder leads down to each of the two levels of the dry.

Suction Piping
The suction pipes start at the wet well, extend through t he wet well wall and connect to 6-inch isolation pinch valves in the dry well. Then they connect to a spool before terminating at the suction elbow of the pumps.

Photograph 6-12 Pacific Avenue Pump Station Wet Well
Land Use Description
Number of
Parcels
Total Area
(ac)
Low Density Residential 880 99.4
Medium Density Residential 1 1.0
General Commercial 3 2.8
Total 884 103.2

EXISTING PUMP STATIONS

6-14 City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan Discharge Piping
The discharge piping for each pump starts at the
discharge nozzle with a 6-inch flanged 90 degree
bend and a 6-inch swing check valve in the
vertical run, followed by a 6-inch isolation pinch
valve, a spool extending up, a flexible coupling,
and a 6-inch 90 degree elbow that connects to the
6-inch discharge header. The discharge header
(Photograph 6-13) exits the dry well through the
southerly wall.

Forcemain

The forcemain is a 6-inch diameter cast iron pipe.

It conveys the sewage from an average wet well
elevation of 76.78 feet amsl to discharge elevation
of 109.23 feet amsl. The forcemain follows Paci fic Avenue south for 200 feet, then turns east on 27 Street, and di
scharges to a City manhole at the intersection of 27 th Street and Ardmore Avenue. The total length of the forcemain is 1225 feet. It was constructed in 1953.

Based on the existing average pump capacity of 304 gpm, the forcemain velocity is 3.4 fps, which is within the recommended velocity range of 3 to 5 fps.

th
Pumps
Pacific Avenue Pump Station ha s two (2
pumps (Model CT3127) with “non-clog” im
pumps is shown on Photograph 6-14. The pum
10 HP motors. The existing pump capa
317 gpm, based on SCADA information

Electrical and Controls
) FLYGT wastewater
pellers. One of the
ps are driven by
cities are 291 gpm and
from April 6, 2009.

The Pacific Avenue Pump Station is po
volt, 3 phase, 3 wire service. The pump
controlled by the wet well water leve l, whic
ultrasonic level sensor. Per SCADA informatio
alternate and start when the level rise
the wet well floor and stop when the level d
above the wet well floor.

A diesel fuel generator is located at t
well.

wered by a 100 amp, 460
station operation is
h is determined by an
n, the pumps
s to about 3.3 feet above
rops to about 2.1 feet
he bottom level of the dry
Photograph 6-13 Pacific Avenue Pump Station Discharge Header Photograph 6-14 Pacific Avenue Pump
Station Pumps

EXISTING PUMP STATIONS

6-15 City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan Tributary Flows
The average dry weather flow calculated by land use and unit flow factors is 98 gpm. The associated peak dry weather and peak wet weather flows are 269 gpm and 376 gpm, respectively. The peak dry weather flow based on the April 6, 2009 SCADA information is approximately 251 gpm.

Recommendations
The existing pump capacities are approximately 291 gpm and 317 gpm, based upon SCADA data and wet well dimensions. The firm pumping capacity of 291 gpm is lower than the estimated peak wet weather flow of 376 gpm. The existing pumps should be replaced with 400 gpm capacity pumps.

Emergency storage of 12,000 gallons, as well as operating volume of 1,500 gallons should be provided. This may require the construction of a new station with a lowe r bottom elevation, and inco rporation of the existing structure into emergency storage, which would provide approximately 7,180 gallons.

The forcemain should be replaced with a new 6-inch pipe when the pump station is improved.

6-5 POINSETTIA AVENUE PUMP STATION

Location and Tributary Area
Poinsettia Avenue Pump Station is a wet well-dry well type facility located on Poinsettia Avenue south of Manhattan Beach Boulevard. Access to the pum p station, shown on Photograph 6-15, is through a hatch above the dry well, on the easterly sidewalk of Poinsettia Avenue. The pump station was originally constructed in 1949 and retrofitted in 1995.

Poinsettia Avenue Pump Station serves a 25 acre tributary area consisting of only low density residential land uses. The tributary area of the pump station is shown on Figure 6-5. The details of the tributary area land uses are shown in Table 6-5.

Table 6-5
Poinsettia Avenue Pump Station Tributary Land Uses
Land Use Description
Number of
Parcels
Total Area
(ac)
Low Density Residential 152 25.3
Total 152 25.3

Photograph 6-15 Poinsettia Avenue Pump
Station Access
#*
#*
#*
#*
#*
#*
#*
#*
#*
#
4" CIP
Forcemain
Poinsettia
Ave PS
9TH ST
11TH ST
8TH ST
10TH ST

JOHN ST
6TH ST

PACIFIC AVE
11TH PL

VALLEY DR

PACIFIC PL
12TH ST

POINSETTIA AVE

DIANTHUS ST

ARDMORE AVE

MANHATTAN BEACH BLVD
13TH ST

HIGHVIEW AVE
7TH PL

JOHN PL
7TH ST
8TH PL
6TH PL
12TH CT
9TH PL

ELM AVE

FISHER AVE

PINE AVE

LAUREL AVE

ANDERSON ST
14TH ST

RAILROAD PL
10TH PL

WALNUT AVE
11TH Pl

CENTER PL

ARBO LADO CT
CREST DR 6TH ST
8TH ST
9TH ST
10TH ST
6TH ST
PROJECT NO: 1640901.10
DATE: September 2009

CITY OF MANHATTAN BEACH

WASTEWATER MASTER PLAN
Poinsettia Ave Pump Station
Tributary Area
Figure 6-5
³
0 150 30075
Feet
1" = 300'
Legend
Landuse
#*
#*
Sewer Manholes
Manhattan Beach Sewage Pump Station
LACSD Sewage Pump Station
Manhattan Beach Forcemain
Manhattan Beach Sewer
LACSD Trunk Sewer
City Boundary
Poinsettia Avenue Pump Station Tributary Area
!(
Low Density Residential
Medium Density Residential
High Density Residential
Downtown Commercial
Local Commercial
General Commercial
North End Commercial
Manhattan Village
Mixed-Use Commercial
Industrial
Parks / Open Space
Public Facilities

EXISTING PUMP STATIONS

6-17 City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan Influent Sewer

A great majority of the wastewater generated within the tributary area is conveyed to the pump station by an 8-inch sewer on Poinsettia Avenue from the south. A 70 foot section of 8-inch sewer serves the parcels between the pump station and Manhattan Beach Boulevard. The two gravity sewers confluence at a manhole southwesterly of the pump station. The influent 8-in ch diameter sewer extends northeasterly, and enters the wet well from the west with an invert elevation of 93 feet amsl.

Wet Well

The pump station is an 11 foot diameter reinforced
concrete structure. The existing wet well
(Photograph 6-16) is a po rtion of the pump station
structure with cross sectio nal area of 18.6 square
feet. Access to the wet well is through a 24-inch
diameter cover located on the floor of the dry well
mezzanine level.

The bottom elevation of the wet well is 86.92 feet
amsl. Two 4-inch diameter suction start with 90
degree bends and short flanged spools through the
north wall of the wet well.

The wet well has 154 gallons of operational storage bet ween the pump start and stop levels, which indicates pump cycling of up to 13 per hour. The pumps cycled about 6 times per hour between 6 am and 9 am on April 6, 2009. The wet well has 394 gallons of emergency storage, which provides 4.7 minutes of storage during the estimated peak wet weather flow of 85 gpm.

Dry Well

The dry well has a mezzanine level, which houses most of the electrical equipment and the standby generator, and a bottom level which contains the pumps. The bottom elevation of the dry well is at 86.92 feet amsl.

Suction Piping
The suction pipes start at the wet well, extend through the wet well wall to 4-inch isolation pinch valves and a spool before terminating at the suction elbow of the pumps.

Discharge Piping
The discharge piping for each pump starts at the di scharge nozzle with a 4-inch flanged 90 degree elbow followed by a 4-inch check valve, a 4-inch isolation pinch valve, a spool and a 4-inch flanged 45 degree elbow. The piping for one pump then connects directly into a 4-inch tee that connects to the discharge header. The piping for the second pump requires another 4-inch spool before it connects into the tee.

Photograph 6-16 Poinsettia Avenue Pump Station Wet Well

EXISTING PUMP STATIONS

6-18 City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan Forcemain
The forcemain is a 4-inch diameter cast iron pipe. It conveys the sewage from an average wet well elevation of 89.92 feet amsl to a discharge elev ation of 111.83 feet amsl. The forcemain exits the dry well through the westerly wall of the pump station, follows Poinsettia Avenue north, and discharges to a City sewer manhole at the intersection of Poinsettia Avenue and Manhattan Beach Boulevard. The total length of the forcemain is about 163 feet. It was constructed in 1949.

Based on the existing pump capacity of 136 gpm, the forcemain velocity is 3.5 fps, which is within the recommended velocity range of 3 to 5 fps.

Pumps
Poinsettia Avenue Pump Station has two (2)
FLYGT wastewater pumps (Model CT3102) with
“non-clog” impellers. One of the pumps is shown
in Photograph 6-17. The pumps are driven by 5
HP motors. The existing pump capacity, based
on SCADA information from April 6, 2009, is
approximately 136 gpm. The pumps start and
stop 5 to 6 times per hour during morning peak
hours (6:00 am – 9:00 am).

Electrical and Controls

The Poinsettia Avenue Pump Station is powered
by a 100 amp, 460 volt, 3 phase, 3 wire service.

The pump station operation is controlled by the
wet well water level, which is determined by an
ultrasonic level sensor. Per SCADA information,
the pumps alternate and start when the level rises
to about 3.1 to 3.3 feet above the wet well floor
and stop when the level drops to about 1.9 to 2.2
feet above the wet well floor.

A diesel generator is located on the mezzanine
level of the pump station.

Tributary Flows

The average dry weather flow calculated by land
use and unit flow factors is 19 gpm. The
associated peak dry weather and peak wet
weather flows are 60 gpm and 85 gpm,
respectively. The peak dry weather flow based on
the April 6, 2009 SCADA information is
approximately 48 gpm.

Photograph 6-17 Poinsettia Avenue Pump Station Pumps
Photograph 6-18 Poinsettia Avenue Pump Station Control Panel

EXISTING PUMP STATIONS

6-19 City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan Recommendations
Poinsettia Avenue Pump Station has a very small operational wet well, which may result in the pumps cycling about 14 times per hour, which is excessive. The emergency storage capacity of 394 gallons is much less than that required by the criterion (2,600 gallons). Its location in the driveway of the adjacent school precludes construction of improvements needed to comple tely eliminate surface water leakage into the dry well. The electrical equipment is old, and does not m eet current standards. It has exceeded its useful life. It should be replaced with a new pump station. A new forcemain should be constructed at the same time.

6-6 MEADOWS AVENUE PUMP STATION

Location and Tributary Area
Meadows Avenue Pump Station is a wet well –
dry well type facility located on Meadows Avenue
south of 9
th Street. Access to the pump station,
shown on Photograph 6-19, is through a hatch
above the dry well, on the easterly sidewalk of
Meadows Avenue. The pump station was
originally constructed in 1953 and upgraded in
1997.

Meadows Avenue Pump Station serves a 99 acre
tributary area consisting of low density residential,
medium density residential, general commercial
and public facilities land uses. The tributary area
is shown on Figure 6-6. The tributary land use categories are shown in Table 6-6.

Table 6-6 Influent Sewer

Meadows Avenue Pump Station Tributary Land Uses
Wet Well
The wastewater generated within the tributary area
is conveyed to the pump station wet well by gravity
sewers. A 12-inch sewer on Meadows Avenue
conveys flows from the south and an 8-inch sewer
brings flows from the north. They then combine
into one 12-inch sewer that enters the wet well
from the west at an elevation of 103.90 ft.

The existing wet well (Photograph 6-20) is a 10’-0” long and 4’-0” wide rectangular unlined reinforced concrete structure, located directly west of the dry well. Access to the wet well is through a 30-inch diameter manhole on Meadows Avenue.

Photograph 6-19 Meadows Avenue Pump Station Access
Land Use Description
Number of
Parcels
Total Area
(ac)
Low Density Residential 492 93.2
Medium Density Residential 1 0.3
General Commercial 20 5.3
Public Facilities 1 0.3
Total 514 99.1
#*
#*
#*
#*
#*
#*
#*
#*
#*
#
4" CIP
Forcemain
Poinsettia
Ave PS
Meadows
Ave PS
Voorhees
Ave PS
6" CIP
Forcemain
8TH ST
9TH ST
2ND ST
6TH ST
11TH ST
10TH ST

MEADOWS AVE

ROWELL AVE

SEPULVEDA BLVD

DIANTHUS ST

POINSETTIA AVE
5TH ST
1ST ST

JOHNSON ST

MANHATTAN BEACH BLVD
3RD ST

KEATS ST

KUHN DR

DUNCAN PL

DUNCAN AVE
12TH ST

BOUNDARY PL

LARSSON ST
1ST PL

ANDERSON ST

RONDA DR

SHELLEY ST

ELM AVE

OAK AVE

PINE AVE

GATES AVE

CURTIS AVE

LONGFELLOW DR

PROSPECT AVE

WALNUT AVE

ALTURA WY

MAGNOLIA AVE

CHESTNUT AVE

VOORHEES AVE
12TH CT

TERRAZA PL

CAMINO CARDINELL

BRYANT PL
6TH ST
3RD ST
1ST ST
5TH ST
PROJECT NO: 1640901.10
DATE: September 2009

CITY OF MANHATTAN BEACH

WASTEWATER MASTER PLAN
Meadows Ave Pump Station
Tributary Area
Figure 6-6
³
0 250 500125
Feet
1" = 500'
Legend
Landuse
#*
#*
Sewer Manholes
Manhattan Beach Sewage Pump Station
LACSD Sewage Pump Station
Manhattan Beach Forcemain
Manhattan Beach Sewer
LACSD Trunk Sewer
City Boundary
Meadows Avenue Pump Station Tributary Area
!(
Low Density Residential
Medium Density Residential
High Density Residential
Downtown Commercial
Local Commercial
General Commercial
North End Commercial
Manhattan Village
Mixed-Use Commercial
Industrial
Parks / Open Space
Public Facilities
1"= 500'

EXISTING PUMP STATIONS

6-21 City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan The bottom elevation of the wet well is 98.98 feet
amsl at the westerly wall. Two 6-inch pipes exit the
wet well with an invert of 98.98 feet amsl and
extend east into the dry well.

The wet well has 300 gallons of operational storage
between the pump start and stop levels, which
indicates that pumps may cycle up to 19 times per
hour. The wet well has 536 gallons of emergency
storage, which provides 1.8 minutes of wet weather
storage.

Dry Well

The dry well is a 10’-6” long and 10’-0” wide
rectangular reinforced concrete structure located to
the east of the wet well. Its top slab is at elevation 111.50 feet amsl. The bottom elevation of the dry wel
7’-0” from the northerly wall. The floor slopes toward sump pump is located. The sump pump conveys any leakage and wash water back to the wet well through a 1-¼” discharge pipe. Access to the dry well is throu gh a 30” x 60” rectangular hatch, located at ground level on the easterly sidewalk of Meadows Avenue. A ladder leads down to each of the two levels of the pump station.

Suction Piping
l is at 97.85 feet amsl. The pumps are located 3’-0” and s the middle of the westerly wall of the dry well where the

The suction pipes start at the wet well, extend through t he wet well wall and connect to 6-inch isolation pinch valves. Then they connect to 6” x 4” flanged reducers before terminating at the suction elbow of the pumps.

Discharge Piping
The discharge piping for each pump starts at the
discharge nozzle with a 6” x 4” flanged 90 degree
reducing bend and a 6-inch swing check valve in
the vertical run, followed by a 6-inch isolation
pinch valve, a spool extending up with a flexible
coupling, and a 6-inch flanged 90 degree elbow
that connects to the discharge header. The
discharge header (Photograph 6-21) exits the dry
well through the northerly wall.

Forcemain

The forcemain is a 6-inch cast iron pipe. It
conveys the sewage from an average wet well
elevation of 101.48 feet amsl to a discharge
elevation of 149.17 feet amsl. The forcemain
Photograph 6-20 Meadows Avenue Pump Station Wet Well
Photograph 6-21 Meadows Avenue Pump Station Discharge
Header

EXISTING PUMP STATIONS

6-22 City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan exits the dry well through the northerly wall,
follows Meadows Avenue north and discharges to
a City sewer manhole at the intersection of
Meadows Avenue and 11 th Street. The total
length of the forcemain is about 730 feet. It was
constructed in 1953.

Pumps
Meadows Avenue Pump Station has two (2)
FLYGT wastewater pumps (Model CT3127) with
“non-clog” impellers. One of the pumps is shown
on Photograph 6-22. The pumps are driven by 10
HP motors. The existing pump capacity, based
on SCADA information from April 6, 2009, is
approximately 230 gpm. The pumps start 5 to 8
times per hour during morning peak hours (5:00
am – 9:00 am).

Electrical and Controls

The Meadows Avenue Pump Station is powered
by a 100 amp, 460 volt, 3 phase, 3 wire service.

The pump station operation is controlled by the
wet well water level, which is determined by an
ultrasonic level sensor. Per SCADA information,
the pumps alternate cycles and start when the
level rises to about 3.2 to 3.3 feet above the wet
well floor and stop when the level drops to about

2.2 to 2.3 feet above the wet well floor.

A diesel standby generator is located on the
bottom level of the pump station adjacent the
wastewater pumps.

Tributary Flows

The average dry weather flow calculated by land use and unit flow factors is 77 gpm. The associated peak dry weather and peak wet weather flows are 216 gpm and 303 gpm, respectively. The peak dry weather flow based on the April 6, 2009 SCADA information is approximately 145 gpm.

Recommendations

The existing pump capacities are approximately 291 gpm and 317 gpm, based upon SCADA data and wet well dimensions. The firm pumping capacity of 291 gpm is lower than the estimated peak wet weather flow of 376 gpm. The existing pumps should be replaced with 400 gpm capacity pumps.

Photograph 6-22 Meadows Avenue Pump Station Pumps
Photograph 6-23 Meadows Avenue Pump Station Control Panel

EXISTING PUMP STATIONS

6-23 City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan Emergency storage of 12,000 gallons, as well as operating volume of 1,500 gallons should be provided. This may require the construction of a new station with a lowe r bottom elevation, and inco rporation of the existing structure into emergency storage, which would provide approximately 7,180 gallons.

The forcemain should be replaced with a new 6-inch pipe when the pump station is improved.

6-7 VOORHEES AVENUE PUMP STATION

Location and Tributary Area

Voorhees Avenue Pump Station is a wet well-dry well type facility located adjacent to the intersection of Voorhees Avenue and Rowell Avenue. Access to the pump station is through a hatch above the drywell. The pump station was originally constructed in 1953 and retrofitted in 1997.

Voorhees Avenue Pump Station serves a 103 acre tributary area consisting of low density residential, high density residential, general commercial and public facilitie s land uses. The tributary area of the pump station is shown on Figure 6-7. The tributary land use categories are shown in Table 6-7.

Table 6-7
Voorhees Avenue Pump Station Tributary Area Influent Sewer The wastewater generated within the tributary area
is conveyed to the pump station wet well by gravity
sewers. An 8-inch sewer brings flows from the
north and another 8-inch sewer brings flows from
the south. They then combine into one 10-inch
sewer that enters the wet well from east at an
elevation of 113 feet amsl.

Wet Well

The existing wet well (Photograph 6-24) is a 10’-
0” long and 4’-0” wide rectangular unlined
reinforced concrete structure, located north of the
dry well. Access to the wet well is through a 30-
inch diameter manhole cover.

The bottom elevation of the wet well is 109.68
feet amsl. Two 6-inch suction pipes exit the wet
well with an invert of 109.68 feet amsl and extend
into the dry well.

The wet well has 300 gallons of operational
storage between the pump start and stop levels,
which indicates that the pumps may cycle up to
12 times per hour.

Land Use Description
Number of
Parcels
Total Area
(ac)
Low Density Residential 227 39.5
High Density Residential 6 3.8
General Commercial 14 11.2
Public Facilities 6 48.7
Total 253 103.2
Photograph 6-24 Voorhees Avenue Pump Station Wet Well
#*
#*
#*
#*
#*
#*
#*
#*
#*
#
City of Redondo
Beach
Voorhees
Ave PS
6" CIP Forcemain
2ND ST

PECK AVE

HERRIN ST

ARTESIA BLVD

MEADOWS AVE

SEPULVEDA BLVD

DUNCAN PL

KEATS ST

KUHN DR

DUNCAN AVE
1ST ST

BOUNDARY PL
1ST PL

ROWELL AVE

PROSPECT AVE

TENNYSON ST

DIANTHUS ST

GATES AVE

RONDA DR

CURTIS AVE

POINSETTIA AVE

CHABELA DR

NELSON AVESHELLEY ST

RUHLAND AVE

MATHEWS AVE

VOORHEES AVE

LONGFELLOW DR

ALTURA WY

TERRAZA PL

CURTIS AVE
1ST ST

GATES AVE
1ST ST

VOORHEES AVE
PROJECT NO: 1640901.10
DATE: September 2009

CITY OF MANHATTAN BEACH

WASTEWATER MASTER PLAN
Voorhees Ave Pump Station
Tributary Area
Figure 6-7
³
0 250 500125
Feet
1" = 500'
Legend
Landuse
#*
#*
Sewer Manholes
Manhattan Beach Sewage Pump Station
LACSD Sewage Pump Station
Manhattan Beach Forcemain
Manhattan Beach Sewer
LACSD Trunk Sewer
City Boundary
Voorhees Avenue Pump Station Tributary Area
!(
Low Density Residential
Medium Density Residential
High Density Residential
Downtown Commercial
Local Commercial
General Commercial
North End Commercial
Manhattan Village
Mixed-Use Commercial
Industrial
Parks / Open Space
Public Facilities

EXISTING PUMP STATIONS

6-25 City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan Dry Well
The dry well is a 10’-6” long and 10’-0” wide rectangular reinforced concrete structure located to the east of the wet well. Its top slab is at elevation 122.20 feet amsl. The bottom elevation of the dry well is at 108.55 feet amsl. The pumps are located 3’-0” and 7’-0” from the easterly wall. The floor slopes towards the middle of the northerly wall of the dry well where the sump pu mp is located. The sump pump conveys any leakage and wash water back to the wet well through a 1-¼” discharge pipe. Access to the dry well is through a 30” x 60” rectangular hatch, located at ground level. A ladder leads down to each of the two levels of the pump station.

Suction Piping
The suction pipes start at the wet well 2, extend
through the wet well wall and connect to 6-inch
isolation pinch valves. Then they connect to 6” x 4”
flanged reducers before terminating at the suction
elbow of the pumps.

Discharge Piping

The discharge piping for each pump starts at the
discharge nozzle with a 6” x 4” flanged 90 degree
reducing bend and a 6-inch swing check valve in
the vertical run, followed by a 6-inch isolation pinch valve, a spool extending up with a flexible coupling,
and a 6-inch flanged 90 degree elbow that connects
to the discharge header. The discharge header
(Photograph 6-25) exits the dry well through the easterly wall.

Forcemain

The forcemain is a 6-inch cast iron pipe. It conveys the sewage from an average wet well elevati on of 110.39 feet to discharge elevation of 153 feet amsl. The forcemain exits the dry well and follows the easement to the south and east towards Peck Avenue. It then turns north on Peck Avenue and discharges at a City manhole located at the intersection of Gates Avenue and Peck Avenue.

Based on the existing pump capacity of 227 gpm, the forcemain velocity is 2.1 fps, which is less than the recommended velocity range of 3 to 5 fps.

Pumps

Voorhees Avenue Pump Station has two (2) FLYGT
wastewater pumps (Model CT3127) with “non-clog” impellers.

One of the pumps is shown on Photograph 6-26. The pumps are driven by 10 HP motors. The existing pump capacity,

Photograph 6-25 Voorhees Avenue Pump Station Discharge Header
Photograph 6-26 Voorhees Avenue Pump
Station Pumps

EXISTING PUMP STATIONS

6-26 City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan based on SCADA information from April 6, 2009, is approximately 227 gpm. The pumps start 6 to 8 times per hour during morning peak hours (5:00 am – 9:00 am).

Electrical and Controls
The Voorhees Avenue Pump Station is powered by a 100 amp, 460 volt, 3 phase, 3 wire service. The pump station operation is controlled by the wet well water leve l, which is determined by an ultrasonic level sensor.

Per SCADA information, the pumps alternate and start when the level rises to about 2.6 to 2.7 feet above the wet well floor and stop when the level drops to about 1.6 to 1.7 feet above the wet well floor.

A diesel standby generator is located on the bottom level of the pump station adjacent the wastewater pumps.

Tributary Flows

The average dry weather flow calculated by land use and unit flow factors is 90 gpm. The associated peak dry weather and peak wet weather flows are 250 gpm and 350 gpm, respectively. The peak dry weather flow based on the April 6, 2009 SCADA information is approximately 182 gpm.

Recommendations

The existing pump capacities are approximately 227 gp m. The firm pumping capacity is lower than the estimated peak wet weather flow of 350 gpm. The ex isting pumps should be replaced with 350 gpm capacity pumps.

Emergency storage of 10,500 gallons, as well as operating volume of 1,330 gallons should be provided. This may require the construction of a new station with a lowe r bottom elevation, and inco rporation of the existing structure into emergency storage, which would provide approximately 6,000 gallons.

The forcemain should be replaced with a new 6-inch pipe when the pump station is improved.

6-8 CIVIC CENTER PUMP STATION

The Civic Center Pump Station is a submersible
station which serves the Civic Center. It is
located in a utility room at the bottom level of the
Civic Center Building, as shown on Photograph
6-27. The wet well, pumps, and discharge piping
are shown on Photographs 6-28 and 6-29.

Record information for the facility could not be
located. However, the pump station appears to
have ample capacity for its tributary flows.

Photograph 6-27 Civic Center Pump Station Access

EXISTING PUMP STATIONS

6-27 City of Manhattan Beach
Photograph 6-28 Civic Center Pump Station Wet Well
Recommendations
The Civic Center Pump Station is in good con
improvements are necessary at this time.

PIER PUMP STATION

Location and Tributary Area
dition, and no
6-9

The Pier Pump Station is a submersible pump statio
located at the end of the Manhattan Beach Pie
Photograph 6-29 Civic Center Pump Station
Pumps
n
r.

Access to the pump station, shown on Photograph 6-
30, is through manhole cover on the pier. The pump
station is approximately 15 years old. The Pier
Pump Station serves the restaurant located at the
end of the pier.

Wet Well

Photograph 6-30 Pier Pump Station Access

The existing wet well (Photograph 6-31) is a 4’-0” x
4’-0” reinforced concrete vault.

Photograph 6-31 Pier Pump Station Wet Well
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan

EXISTING PUMP STATIONS

6-28 City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan Forcemain
The forcemain/discharge pipe is a 4-inch cast iron pipe alon g the north side of the Pier. Due to its location, it has experienced significant corrosion, as shown on Photographs 6-32 and 6-33.

Pumps
Photograph 6-32 Pier Pump Station Force Main
Photograph 6-33 Pier Pump Station Force Main Close-up

There are two (2) submersible pumps that are driven by 3 HP motors. While record information is not available, the pumps appear to have ample capacity for the tributary flows.

Recommendations
Due to its significantly deteriorated condition, the fo rce main/discharge pipe should be replaced with a non- corrosive pipe properly protected from the environment.

City of Manhattan Beach SSMP

193
Appendix 6 – Wastewater Master Plan – Section 7, Hydraulic Model & Collection System Capacity Analysis

7-1 City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan

SECTION 7

HYDRAULIC MODEL AND COLLECTION SYSTEM CAPACITY ANALYSIS

7-1 GENERAL

To perform a detailed evaluation of the capacity of t he sewer collection system, it is convenient to create a mathematical model that is capable of simulating the operating characteristics of the system. The simulations for this study were performed on a Microsoft Windows based computer utilizing software designed for the analysis of sewer systems. The software selected fo r this study is InfoSewer. It is an ArcGIS-based computer program with the ability to perform steady state analyses of the flows in the sewer system.

InfoSewer offers direct ArcGIS integration allowing GIS analysis and hydraulic modeling to exist in a single environment. The program also manages and mainta ins the database that stores the sewer analysis input and output results. Manning’s Equation is used for depth of flow calculations in the gravity sewer pipes.

7-2 GEOMETRIC MODEL

As a part of this Master Plan project, the City’s Wa stewater GIS was developed. As-built plans were georeferenced and the wastewater facilities were then digi tized. Data was collected from the as-built plans and input into the GIS. The developed Wastewater GIS served as the basis of the system geometric model.

Data utilized included upstream and downstream manhole invert elevations, pipe sizes and pipe lengths.

Design pipe slopes were calculated from the invert elevations and reach lengths.

Inverts for approximately 4.8 percent of the system (99 reaches out of 2,078) were not found through a search of the City’s available construction plans. Invert elevations for these reaches were obtained through field surveying. Detailed survey information is provided in Appendix 2.

The hydraulic model includes the entire sewer system that is owned and operated by the City, from the uppermost reaches of the system to its confluence wi th a Los Angeles County Sanitation District (LACSD) trunk sewer or until the flow exits the City into an adjacent agency facility. Excluded from the model are laterals, private sewers, and any areas within the City that are provided sewer service by other agencies. The pipe information utilized in the model, including size, material, le ngth, and upstream/d ownstream manhole elevations is listed in Appendix 3.

7-3 LAND USE

The parcel layer, which provides the City’s 2003 General Plan land use information, was used as the land use base map. The land uses within the City boundaries are sh own on Figure 3-4. Since the City’s service area is mostly developed, the hydraulic analyses were co nducted assuming fully developed and occupied tributary areas.

HYDRAULIC MODEL AND CAPACITY ANALYSIS

7-4

SPLIT MANHOLES AND FLOW PATTERNS

The existing system consists of 16 split manholes (m ore than one pipe exiting the manhole). Most of the split manholes occur at high points in the system, where the manhole is typically dry. In general, the flows at the split manholes were divided by calculations based on invert elevations, downstream pipes sizes, and downstream slopes at the split manhole.

Table 7-1
Flow Split Locations
No.

Manhole
ID Location
Flow Directions
from Split
Manhole Comments
1 06-009 Cedar Ave & 16th St East-West High Point
2 06-011 Sepulveda Blvd & 17th St North-South High Point 3 06-040 Meadows Ave & 12th St North-South High Point
4 06-168 Dianthus St & 11th St East-West High Point
5 06-193 Pacific Ave & 23rd St North-South High Point
6 06-203 Poinsettia Ave & 18th St North-South High Point 7 06-225 Pine Ave & 19th St North-South High Point
8 06-230 Elm Ave & Marine Ave North-South High Point
9 06-245 Palm Ave & 23rd St North-South High Point
10 06-277 Sepulveda Blvd & 30th St North-South High Point 11 06-287 Elm Ave & 30th St North-South High Point
12 10-148 Ingleside Dr & 1st St South- Southeast -
13 11-001 19 th St & Ardmore Ave East-West High Point
14 16-021 Bell Ave & 27th St North-Northwest -
15 17-027 36th Pl & Blanche Rd East-West High Point
16 20-059 Manhattan Ave & 24th St North-West -

7-5 TRIBUTARY AREAS

Polygons were created around individual sewer manholes to define the tributary area to each manhole.

Most manholes have a tributary area assigned to it unles s there are multiple manholes in the same area.

Approximately 1,530 polygons were created for the existing and ultimate system analysis. A sample area, displaying the tributary area polygons is shown on Figure 7-1.

7-2 City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan

HYDRAULIC MODEL AND CAPACITY ANALYSIS

Figure 7-1
Tributary
Area Polygons

7-6 MODEL LOADS

For each tributary area, the existing land uses (discussed in Subsection 3-5) and the developed unit flow factors (see Table 4-2) were utilized to apply the average loads to the hydraulic model.

Peak dry weather flows are calculated in the model by a user defined relationship. The peaking formula used in the City’s sewer model is as follows:

PDWF (cfs) = 2.35 x ADWF(cfs)

0.92 7-7 PUMPED FLOWS

There are two separate analysis methods that can be used on the City’s sewer collection system to evaluate the effect of pumped flows downstream of the existing 8 pump stations. A description of each of the analysis methods is as follows:

Method 1: The average tributary flow to each pum p station was transferred to the manholes located at the discharge end of the respective forcem ains. The total average flow was peaked and the downstream sewer depth to diamet er ratios were evaluated ba sed on the calculated peak dry weather flows or

Qpdw = (2.35 x Qadw

0.92) (in mgd)
7-3 City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan

HYDRAULIC MODEL AND CAPACITY ANALYSIS

Method 2: The pump capacity of each pump station was transferred to the manholes located at the discharge end of the respective forcemains. The pu mp capacities were not peaked, but added to the peak dry weather flow at each manhole located do wnstream of the pump station. The downstream sewer depth to diameter ratios were evaluated ba sed on the calculated peak dry weather flows plus the pump capacities (Qpump) or

Qpdw = (2.35 x Qadwf 0.92) + Qpump (in mgd)

Flow monitoring results have shown that pump discharge becomes more and more attenuated the further downstream in the system the monitor is placed. Often times, only the first few reaches located immediately downstream of the discharge point will ex perience a rush of flow that reflects the pump capacity as displayed on Figure 7-2. In this study, the pump capacity was only considered in the first few reaches downstream of the pump discharge locations. For the pipes located a far distance from the pump discharge point, the calculated peak dry weathe r flow based on land use and unit flow factors was utilized for analysis (Method 1).

Figure 7-2
Flow Monitoring of 8” Sewer with Influence from Voorhees Pump Station 0 25
50 75
100
125
150
175
200
225
250
12:00 AM
1:00 AM
2:00 AM
3:00 AM
4:00 AM
5:00 AM
6:00 AM
7:00 AM
8:00 AM
9:00 AM
10:00 AM
11:00 AM
12:00 PM
1:00 PM
2:00 PM
3:00 PM
4:00 PM
5:00 PM
6:00 PM
7:00 PM
8:00 PM
9:00 PM
10:00 PM
11:00 PM
12:00 AM
Flow (gpm)
Time
Monday - January 19, 2009
Location: Gates Ave and Herrin St, MH 01-076
Qmin= 0.7 gpm, Qave=91 gpm, Qmax=240 gpm
7-4 City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan

HYDRAULIC MODEL AND CAPACITY ANALYSIS

7-8

HYDRAULIC ANALYSIS RESULTS

At the completion of a modeling run, output data is created for viewing on the screen or for printing.

Output data for pipes include flow rate, velocity, full pipe capacity, ratio of flow depth to diameter, and required size of replacement or relief pipes to sati sfy the established criterion. Appendix 4 of this Wastewater Master Plan contains the results of hydraulic analyses of the sewer collection system.

The depth to diameter ratio exceeded the established criteria of 0.64 at the following locations:

1. Bell Avenue at 25
th Street (Pipe ID 15084-070L4)
10” diameter sewer with peak d/D>1.00
No pump station influence

As-built plans show a slope of 0.00 and a length of 10 feet. The downstream manhole 070L4 is a LACSD manhole. It is recommended that the slope of this sewer be verified.

2. Pacific Avenue north of 27
th Street (Pipe ID 08077-08082)
8” diameter sewer with peak d/D=0.66 with no pump station influence 8” diameter sewer with peak d/D>1.00 with pump station influence from Palm Avenue PS (see Table 7-2 and description below)

A few reaches downstream of the Poinsettia Avenue Pump Station, Palm Avenue Pump Station, and Bell Avenue Pump Station discharge locations resulted in d/D ratios greater than 0.64 when the pump capacities were implemented (Method 2). These locations are listed in Table 7-2 and shown on Figure 7-

3. It is recommended that flow monitoring be conducted in these areas to verify the d/D ratios prior to implementing any replacement projects.

Table 7-2
Pipes with Model Calculated Capacity Deficiencies Downstream of Pump Discharge Points Pipe ID
U/S MH
ID
D/S MH
ID
Dia
(in)
Length
(ft) Slope
ADWF
(mgd)
Pumped
Flow
(mgd)
PDWF
(mgd)
PDWF
Vel
(ft/s)
PDWF
d/D
PDWF
Depth
(ft)
Full
Flow
(mgd) Comments
06173-06174 06-173 06-174 8 192 0.0040 0.0019 0.7363 0.7437 3.30 1.00 0.67 0.4959 D/S of Poinsettia PS 06174-06175 06-174 06-175 8 254 0.0040 0.0028 0.7363 0.7469 3.31 1.00 0.67 0.4962 D/S of Poinsettia PS 06175-06176 06-175 06-176 8 190 0.0136 0.0033 0.7363 0.7485 4.51 0.69 0.46 0.9125 D/S of Poinsettia PS 08037-08052 08-037 08-052 8 262 0.0040 0.0446 0.4085 0.5430 2.41 1.00 0.67 0.4957 D/S of Palm PS 08052-08055 08-052 08-055 8 281 0.0040 0.0583 0.4085 0.5805 2.57 1.00 0.67 0.4944 D/S of Palm PS 08055-08077 08-055 08-077 8 350 0.0040 0.0637 0.4085 0.5951 2.64 1.00 0.67 0.4953 D/S of Palm PS 08077-08082 08-077 08-082 8 110 0.0040 0.0858 0.4085 0.6538 2.90 1.00 0.67 0.4951 D/S of Palm PS 16019-16022 16-019 16-022 8 68 0.0099 0.0131 0.5728 0.6164 3.84 0.67 0.45 0.7809 D/S of Bell PS 16022-070L3 16-022 07-0L3 10 18 0.0028 0.0135 0.5728 0.6176 2.38 0.69 0.58 0.7504 D/S of Bell PS Total 1,725

7-5 City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan

!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!( !(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!( !(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(!(
!(!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(!(
!(!(!(
!(
!(
!(
!(
!(!(
!(
!(!(!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(!(
!(
!( !(
!( !(
!( !( !(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(!(
!(!(
!(!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(!(!(
!(
!(
!(
!( !( !(
!(
!(
!(
!(!(!(
!(
!(!(
!(
!(
!(!(!(
!(
!(
!(
!( !(
!(!(
!(
!(!(!( !(!(
!(!(
!(!( !(
!(
!(!( !(!(
!(!(
!(!( !(
!(!(
!(!(!(
!(
!(
!(!(
!(
!(
!(!(
!(!(
!(
!(
!(
!(
!(!(
!(!(
!(!(
!(
!(!(
!(!(!(!(!(
!(!( !(
!(
!(!(
!(!( !( !(
!(!(!(
!(!(!(
!(!(!(!(
!(!(
!(
!(
!(
!(!(!(!(!(
!(!(!(!(
!(!(
!(!(!(!(
!(!(!(!(!(!(
!( !( !( !( !(
!( !(
!( !(
!( !(
!(
!( !(!(!(!(!(!(!(!(
!(!(
!(!(!(!(!(!( !( !(
!( !(
!(
!(
!(
!( !(
!(
!(
!(
!(!(
!(!(
!(
!(!(!(
!( !( !(
!(
!(
!( !( !(
!(!(
!(
!(
!(
!(
!(
!( !( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(!(!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(!(
!(!(
!(!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(!(
!(
!(!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(!(!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(!(
!(!(
!(
!(!(!(
!(
!(!(
!(
!(!(
!(!(
!(
!(
!(!(
!(
!(
!(
!(!(!(
!(
!(
!( !(
!(!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!( !(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(!(
!(!(
!(
!(
!(
!(!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!( !( !(
!( !(!(!(!(
!(
!(!(
!(
!(
!(!(!(
!(
!(
!( !(
!( !(
!(
!(!(
!(
!(
!(
!(
!(!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(!(!(
!(
!(
!(
!( !( !( !( !(
!(
!(
!(
!(
!(!(
!(!(
!(
!(!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!( !(
!(
!(
!(
!( !(
!( !(!(!( !( !(
!( !( !(
!( !( !(!(
!(
!(!(
!(
!(!(
!(
!(
!(
!(
!(!(!(
!( !(
!(
!(!(
!( !(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(!(!(
!(!(
!(!(
!( !( !( !( !(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(!(
!(
!(!(!(
!( !(
!( !( !( !(
!(
!( !(
!( !(
!(
!(
!(
!(!( !(
!( !(
!(
!(
!(
!(!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!( !(!(
!(
!(!( !(
!(
!(
!( !( !(
!( !( !( !( !(
!(
!(
!(
!(!(!(!(!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!( !(!(
!(!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !( !( !( !(
!(
!(
!(
!(!(
!(
!(
!(!(!(
!(
!(
!( !(
!(
!(!( !(
!(
!(
!(
!(
!(
!(
!( !( !( !(
!(
!(!(
!(!(!(
!(
!(
!(
!(
!(
!(
!(
!(!(!(
!( !(!(
!(
!( !(
!(!(
!(!(
!( !(
!( !(
!( !(!( !(!(
!(!(!(
!(!(!(
!( !(
!( !( !(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!( !( !( !( !(
!(!(!(!(!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !( !(
!( !(
!( !( !(
!(
!( !( !(!( !( !(
!(
!(
!( !( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(!( !(
!(!(
!(
!(
!(!(!(
!( !(!(
!(
!(!(
!(!(!(
!( !(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!( !( !( !(
!(
!(
!( !(
!( !( !( !(
!(
!(
!(
!(
!(
!(
!(!(!(
!(!(
!(!(!(
!(
!( !(
!(
!(!(!(
!(!(!(!(
!(!(!(
!(
!(!(!(
!(!(!(
!(
!( !( !(!(!(
!(
!(
!(
!(
!(
!(
!(
!( !( !(
!(
!( !(
!( !( !( !( !( !(
!( !( !( !( !( !(
!( !( !(
!( !( !( !( !(
!( !( !( !( !(
!( !(
!(
!(
!(
!(
!( !( !( !( !( !( !(
!(
!(
!(!(
!( !(
!(
!(
!( !( !( !( !(
!(!(!(
!(!(!( !( !( !(
!( !( !(
!(
!(!(
!(
!(!(
!(
!( !( !( !(!(
!(!( !( !(!( !(
!(
!(!( !( !( !(!(
!(!(!(!( !( !( !( !( !( !(
!(
!(!(!(
!(
!(!(!(
!( !(
!(
!(
!(!(!(
!( !(
!(!(
!(!(!(!(
!( !( !( !( !(
!( !( !( !( !(
!( !( !( !(
!( !( !(!( !(
!(!(
!( !( !(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!( !(
!(
!( !(
!(!(!(!(
!(
!(
!( !( !(
!(
!(!(!(
!(!(!(
!(
!(
!(!(!( !( !( !(
!( !( !( !(!(
!(!(!( !(
!( !( !(
!(
!(
!(!(!(!(!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(!(!(!(
!(!(!(!(!(
!( !(!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(!(
!(
!(
!(!(
!(
!(!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!( !(!(!( !(!( !( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(!(
!( !(
!( !( !(
!(
!(
!(
!(
!( !( !(!(
!(!(
!(
!(
!(
!( !( !( !(
!(!(
!(!(!(
!(
!(
!(!(!(!(
!( !(
!(
!(!(
!(
!(
!(
!(
!(!(
!(
!(
!( !( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!( !( !(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!( !( !(
!(
!(!(
!( !(
!(
!(
!( !( !( !( !(
!(
!(!(!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!( !(
!(
!(
!(!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !( !( !( !(
!( !( !( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !( !( !(
!(
!(
!(
!( !( !( !( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(!( !( !(
!(
!(!(
!(
!(
!(
!(
!(!(
!(
!(!(!( !(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(!( !(
!(
!( !(
!(!(
!(
!( !(
!(
!(
!(!(!(
!(
!(!(
!(
!(!(
!(!(
!(!(
!(
!(!(
!(!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!( !( !( !(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!( !( !(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(!(
!(!(
!( !(
!(
!( !(
!(
!(
!(
!(
!(
!(
!(!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(!(!(!(
!(
!(
!(
!(
!( !(!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
#*
#*
#*
#*
#* #*
#*
#*
#*
#*
City of El Segundo
City of
Hawthorne
City of
Redondo
Beach
City of Hermosa
Beach
Pacific Ocean
Pier PS
Civic
Center PS

LACSD PS
Palm
Ave PS
Pacific
Ave PS
Poinsetta
Ave PS
Meadows
Ave PS
Voorhees
Ave PS
Bell
Ave PS
9TH ST
8TH ST
11TH ST

OCEAN DR
2ND ST
10TH ST
6TH ST

THE STRAND

VALLEY DR

HIGHLAND AVE

ROSECRANS AVE

AVIATION BLVD

MARINE AVE

SEPULVEDA BLVD

PACIFIC AVE
27TH ST

PECK AVE
35TH ST

ARDMORE AVE

MEADOWS AVE
19TH ST

ROWELL AVE

OAK AVE

ELM AVE

HERRIN ST
31ST ST
5TH ST
23RD ST

POINSETTIA AVE
3RD ST

MANHATTAN BEACH BLVD

VISTA DR

HARKNESS ST
21ST ST

ALMA AVE
15TH ST

CREST DR
18TH ST

ARTESIA BLVD
1ST ST
17TH ST
36TH ST
35TH PL
36TH PL

DIANTHUS ST
30TH ST
31ST PL
29TH ST
33RD PL
24TH ST

BLANCHE RD
4TH ST

WALNUT AVE
7TH ST
26TH ST

PINE AVE
20TH PL

MANHATTAN AVE

LAUREL AVE

GATES AVE

CEDAR WAY
28TH ST

BAYVIEW DR
34TH ST

JOHN PL

CURTIS AVE

WENDY WY

JOHNSON ST

MAGNOLIA AVE

PARKVIEW AVE

NELSON AVE
33RD ST
12TH ST
11TH PL

MANZANITA LN

RUHLAND AVE

MATHEWS AVE

PACIFIC PL

DUNCAN PL

FAYMONT AVE
13TH ST

CARLOTTA WAY

LYNNGROVE DR

VOORHEES AVE
3RD PL

PALM AVE
4TH PL

JOHN ST

DUNCAN AVE

KUHN DR

KEATS ST
5TH PL
16TH ST
25TH ST
6TH PL

BOUNDARY PL

MAGNOLIA WAY
14TH ST

HERRIN AVE
18TH PL
7TH PL

LARSSON ST
2ND PL

VILLAGE CIR

CEDAR AVE
8TH PL
21ST PL
41ST ST
38TH ST
1ST PL
44TH ST

TENNYSON ST

ANDERSON ST
9TH PL

FAIRWAY DR

MANOR DR

AGNES RD
22ND ST

REDONDO AVE

RONDA DR
20TH ST

AVIATION WY
14TH PL

HOMER ST
27TH PL

SAUSALITO CIR

MARINE PL

PARK PL

MORNINGSIDE DR

GATEWAY DR

FRANCISCO ST

SEAVIEW ST

FLOURNOY RD

AVIATION PL

EL PORTO ST
10TH PL

VILLAGE DR
12TH PL

VILLA ESCUELA

HALEY WY
27TH WAY

CATALINA CT

INGLESIDE DR

BERMUDA CT

MARIN CT
18TH ST
2ND PL
17TH ST
17TH ST
23RD ST
20TH ST
14TH ST
30TH ST
23RD ST
21ST PL
35TH PL

PECK AVE
33RD ST
36TH PL
3RD ST

OAK AVE

REDONDO AVE
15TH ST
12TH ST

CURTIS AVE
19TH ST
3RD ST

WALNUT AVE
15TH ST
1ST ST
18TH ST
12TH ST

AGNES RD

JOHN ST

ELM AVE

PALM AVE
30TH ST
5TH ST
23RD ST

PINE AVE
28TH ST
29TH ST
26TH ST

MAPLE AVE

LAUREL AVE
32ND ST
4TH PL
19TH PL

BELL AVE

BELL AVE
6TH PL
15TH PL

HIGHVIEW AVE
16TH PL
17TH PL
2ND PL
8TH PL
40TH ST
45TH ST
39TH ST
43RD ST
42ND ST

PROSPECT AVE
38TH PL
23RD PL
23RD PL
23RD PL
23RD PL
23RD PL

KELP ST

GULL ST

CHESTNUT AVE

CHABELA DR

SHELLEY ST

SHELL ST
27TH PL
34TH PL
34TH PL
34TH PL
34TH PL
12TH CT

MARINE PL

MARINE PL
26TH PL
26TH PL
30TH PL
30TH PL
30TH PL
30TH PL
32ND PL
32ND PL
32ND PL
32ND PL

MORNINGSIDE DR

WESTPORT

LONGFELLOW DR

LONGFELLOW DR
29TH PL
29TH PL
29TH PL
29TH PL

FLOURNOY RD
28TH PL
28TH PL
28TH PL
28TH PL

VILLAGE CENTER DR

MARKET PL
10TH PL
10TH PL
10TH PL

PARK WY

FISHER AVE

DUNCAN DR

MOONSTONE ST

ALTURA WY

CHATHAM

GRANDVIEW AVE

BRIDGEPORT
24TH PL
24TH PL
24TH PL
24TH PL

ROSECRANS PL

MALAGA WY

RAILROAD PL

CARRIAGE PL

EVERGREEN LN
11TH Pl

DEEGAN PL

LAUREL SQ
31ST WAY
13TH PL
13TH PL
12TH PL

ARDMORE WY

CENTER PL

CENTER PL
25TH PL
25TH PL
25TH PL

TERRAZA PL

CHURCH ST

CAMBRIDGE

CAMINO CARDINELL

DOVER PL

MALAGA PLE

MALAGA PLW

ARBO LADO CT

HOMER PL

INGLESIDE DR

STRATFORD LAGUNA CT

BRYANT PL

CORONADO CT

CAYMAN CT
PACIFIC Pl

GRENADA CTSANTA CRUZ CT

MONTEREY CT

NANTUCKET PL

TIBURON CT

SANTA ROSA CT

PORTSMOUTH WY

CORDOBA CT

SAN MIGUEL CTLAFAYETTE CT
3RD PL
18TH ST
11TH PL
14TH ST

MANHATTAN AVE
17TH ST
6TH ST
33RD PL

PINE AVE

MARINE PL
33RD PL
3RD PL
14TH ST
2ND PL
11TH ST
35TH ST
12TH ST
3RD ST
14TH ST
19TH ST
5TH PL
1ST PL

POINSETTIA AVE
33RD ST

CREST DR
33RD PL
31ST ST
31ST PL

BAYVIEW DR
31ST PL
22ND ST
35TH PL
10TH ST
1ST PL
25TH ST
8TH ST
12TH PL
2ND ST
9TH PL

MARINE AVE

GATES AVE
6TH PL

BAYVIEW DR
27TH ST

CREST DR
12TH ST
31ST PL
33RD ST

HOMER ST
6TH ST

MARINE PL

BAYVIEW DR
9TH ST
5TH ST

PACIFIC PL
13TH ST
7TH PL
35TH PL
1ST ST
9TH PL
8TH PL
18TH ST

VISTA DR
1ST PL
18TH ST
36TH PL
11TH PL
21ST ST
3RD ST
36TH PL
31ST PL
35TH PL
7TH PL

CREST DR
36TH ST
33RD PL
5TH PL
21ST ST

CREST DR
1ST ST
36TH PL

VOORHEES AVE
5TH ST
4TH PL
1ST PL
³
0 1,200 2,400600
Feet
1" = 1,200'
Sewer Manholes
Manhattan Beach Sewage Pump Station
LACSD Sewage Pump Station
Manhattan Beach Forcemain
Manhattan Beach Sewer
LACSD Trunk Sewer
City Boundary
Model Calculated Capacity Deficiency Locations
Legend
#*
!(
#*
PROJECT NO: 1640901.10
DATE: September 2009

CITY OF MANHATTAN BEACH

WASTEWATER MASTER PLAN
Model Calculated
Capacity Deficiency Locations
Figure 7-3
City of Manhattan Beach SSMP

200

Appendix 7 – Wastewater Master Plan – Section 8, Condition Assessment

8-1 City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan

SECTION 8

COLLECTION SYSTEM CONDITION ASSESSMENT

8-1 INTRODUCTION
The City of Manhattan Beach (City) established a prog ram to begin CCTV inspections of its approximately 86 mile long sewer collection system. The scope of the Master Plan included inspections of 227,714 feet (43.1 miles) of pipe or 52.9 percent of the total system.

Condition assessment of the inspected gravity sewer pipe s and manholes is presented in this section. The procedure followed to complete the assessment of the gravity sewers is as follows:
a. Conduct CCTV Inspections.
b. Review information provided by the CCTV contractor.
c. Prepare a database summarizing the findings of the CCTV reports and recordings. d. Prioritize the CCTV recordings per the database summary to select a list of reaches with numerous or significant defects of representative types. Consider operation and maintenance issues separately and identify additional hotspots for the City’s review. e. Select representative reaches of the system to review the CCTV recordings in detail to ensure compliance with CCTV standards and procedures a nd further prioritize the sewers for replacement and/or repair. Verify the completeness of the inspection reports and update the inspection database. f. Develop a rating system to identify and prioritize the condition deficiencies, therefore identifying the critical sewer mains in need of rehabilitation and/or repair. Focus on the sewer pipes that are at risk of collapse or prone to more frequent blockages.
g. Develop an engineer’s cost estimate for the rehab ilitation/replacement of the sewer mains, including construction cost, design, inspection, administration, and contingencies.

8-2 CLOSED CIRCUIT TELEVISION (C CTV) INSPECTIONS OF GRAVITY PIPES

Empire Pipe Cleaning and Equipment, Inc. (Empire) performed video inspection work on approximately 222,714 feet of pipe between October 2008 and August 2 009. Seventy-six (137) DVD’s with inspection reports for 1,200 reaches of sewer were produced by Empire. Each inspection report lists the service connections and deficiencies by location in the inspec ted pipe. Photographs of t he identified deficiencies are included in the inspection reports.

The locations of City sewers with completed CCTV inspections are shown on Figure 8-1. The CCTV inspected sewer pipes range in size from 6-inches to 15-inches in diameter. The majority of the pipes inspected is 8-inches in diameter and made of vitrified clay pipe (VCP).

National Association of Sewer Service Companies (NASSCO) Pipeline Assessment and Certification Program (PACP) coding procedures formed the basis of the inspection work and reports prepared by Empire.

COLLECTION SYSTEM CONDITION ASSESSMENT

8-2 City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan

8-2.1 INSPECTION REPO RT DATABASE SUMMARY
Initially, a database summary was deve loped utilizing the CCTV inspection written reports. This database summary contained a tabulation of the deficiencies ident ified in the written reports, including the following information:
 DVD Number
 Inspection (Run) Number
 Reversal DVD Number
 Reversal Inspection (Run) Number
 Location (Street Name)
 CCTV Inspection Date
 Pipe Identification Number
 Upstream Manhole and Downstream Manhole Identification Numbers  Direction of Camera
 Pipe Size and Material
 Atlas Length and CCTV Inspected Length of Pipe
 Deficiency Tabulation from Written Reports using PACP codes 8-2.2 REVIEW OF REPR ESENTATIVE CCTV RECORDINGS
The inspection report database summary was used in sele cting the recordings to be reviewed in detail. The pipe reaches selected for detailed review were those that showed the most severe structural problems and multiple deficiencies, as well as severe operation and maintenance issues.

First, the reaches that had listed deficiencies such as deformed pipe, hole in pipe, broken pipe, large offset joint, large obstacles, and ball roots were selected for re view. These deficiencies can be a cause of sanitary sewer collapse, overflow or exfiltration into the surrounding soil and may need immediate attention. Next, reaches that had numerous or multiple deficiencies such as fractures, cracks, root s, deposits, obstructions, sags, camera underwater, and survey abandoned were sele cted. Finally, several reaches without listed deficiencies were selected in order to develop insight into the overall condition of the CCTV inspected system.

Recordings for 264 reaches and 53,789 feet of pipe (23. 9% of total inspected) were selected and reviewed in detail. The assessment information of pipes reviewed in detail was incorporated into the original Inspection Report Database Summary. Seventy-two (72) reverse inspections were conducted and are included in the database summary. The reverse set-ups were conducted to complete runs when the camera was blocked for any reason. The length recorded for some of the r eaches where reverse inspections were necessary may be shorter than actual due to blockages in the pipe, as sometimes the camera was not able to reach the same point in the pipe from two directions.
!(
!(
!(!(
!(!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!( !(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!( !(!(
!(!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(!(
!(
!( !(
!(!(
!(!(
!(
!(!(
!(!(
!(
!(
!(
!( !(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(!(!(
!(
!(
!(
!(
!(
!(!(
!(
!(!(!(
!(!(!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(!(
!(
!(!(
!(!(!(
!(
!(
!(
!(
!(!(
!(
!(!(!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(!(!(!(
!(
!( !(
!( !(
!( !( !(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(!(
!(!(
!(!(
!(
!(
!(!(!(
!( !(
!(
!(
!(
!(!(
!(
!(!(
!(!(!(
!( !(!(!(
!(
!(
!(
!( !(!(
!(
!(
!(
!(!(!(
!(
!(!(
!(
!(
!(!(!(
!(
!(
!(
!( !(
!(!(
!(
!(!(!( !(!(
!(!(!(!( !(
!(!(!( !(!(
!(!(!(!( !(
!(!(!(!(!(
!(
!(
!(!(
!(
!(
!(!(!(!(
!(!(
!(!(
!(!(
!(!(
!(!(
!(
!(!(
!(!(!(!(!(
!(!( !(
!(
!(!(
!(!( !( !(
!(!(!(
!(!(!(
!(!(!(!(
!(!(
!(
!(
!(
!(!(!(!(!(
!(!(!(!(
!(!(
!(!(!(!(
!(!(!(!(!(!(
!( !( !( !( !(
!( !(
!( !(
!( !(
!(!( !(!(!(!(!(!(!(!(
!(!(
!(!(!(!(!(!( !( !(
!( !( !(
!(
!(
!( !( !(
!(
!(!(!(
!(!(
!(
!(!(!(
!( !( !(
!(
!(
!( !( !(
!(!(
!(
!(
!(
!(
!(
!( !( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(!(!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!( !(
!(
!(!(
!(!(
!(!(
!(!(
!(
!(!(
!(
!(!(
!(
!(!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(!(
!(
!(!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!( !(
!(
!(
!(!(!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(!(
!(!(
!(
!(!(!(
!(
!(!(
!(
!(!(
!(!(
!(
!(
!(!(
!(
!(
!(
!(!(!(
!(
!(
!( !(
!(!(
!(
!( !(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!( !(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(!(
!(!(
!(
!(
!(
!(!(
!(
!(!(!(
!(
!(
!(
!(
!(!(
!(!(
!(
!(
!(
!(!(
!(
!(!( !(
!(
!(
!(
!( !( !(
!(
!(
!(
!(!( !( !(
!( !(!(!(!(
!(
!(!(
!(
!(
!(!(!(
!(
!( !( !(
!( !(
!(
!(!(
!(
!(
!(
!(
!(!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(!(!(
!(
!(
!(
!( !(!( !( !(
!(
!(!(
!(
!(!(
!(!(
!(
!(!(
!(!(!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(!( !(
!(
!(
!(
!( !(
!( !(!(!( !( !(
!( !( !(
!( !( !(!(
!(
!(!(
!(
!(!(
!(
!(
!(
!(
!(!(!(
!( !(
!(
!(!(
!( !(!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(!(!(
!(!(
!(!(
!( !( !(!( !(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(!(
!(
!(!(!(
!( !(
!( !( !( !(
!(
!( !(
!( !(
!(
!(
!(
!(!( !(
!( !(
!(
!(
!(
!(!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!( !(!(
!(
!(!( !(
!(
!(
!( !( !(
!( !( !( !( !(
!(
!(
!(
!(!(!(!(!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(!(
!(
!(
!(
!(
!( !(!(
!(!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !( !( !( !(
!(
!(
!(
!(!(
!(
!(
!(!(!(
!(
!(
!( !(!(
!(!( !(
!(
!(
!(
!(
!(
!(
!(!(
!(!(
!( !(
!( !(
!( !(!( !(!(
!(!(!(
!(!(!(
!( !(
!( !( !(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!( !( !(!( !(
!(!(!(!(!( !(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!( !( !(
!( !(
!( !( !(
!(
!( !( !(!( !( !(
!(
!(
!( !( !(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(!( !(
!(!(
!(
!(
!(!(!(
!( !(!(
!(
!(!(
!(!(!(
!( !(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!( !( !( !(
!(
!(
!( !(
!( !( !( !(
!(
!(
!(
!(
!(
!(
!(!(!(
!(!(
!(!(!(
!(
!( !(
!(
!(!(!(
!(!(
!(
!(
!(!(
!(!(!(
!(
!(!(!(
!(!(!(
!(
!( !( !(!(!(
!(
!(
!(
!(
!(
!(
!(
!( !( !(
!(
!( !(
!( !( !( !( !( !(
!( !( !( !( !( !(
!( !( !(
!( !( !( !( !(
!( !( !( !( !(
!( !(
!(
!(
!(
!(
!( !( !( !( !( !( !(
!(
!(
!(!(
!( !(
!(
!(
!( !( !( !( !(
!(!(!(
!(!(!( !( !( !(
!( !( !(
!(
!(
!(!( !( !( !(
!(
!(!(!(!(!(
!(
!(
!(
!(
!(
!(
!(
!(!(!(
!( !(!(
!(
!( !(
!(
!(!(
!(
!( !( !( !(!(
!(!( !( !(!( !(
!(
!(!( !( !( !(!(
!(!(!(!( !( !( !( !( !( !(
!(
!(!(!(
!(
!(!(!(
!( !(
!(
!(
!(!(!(
!( !(
!(!(
!(!(!(!(
!( !( !( !( !(
!( !( !( !( !(
!( !( !( !(
!( !( !(!( !(!(!(
!( !( !(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!( !(
!(
!( !(
!(!(!(!(!(
!(
!( !( !(
!(
!(!(!(
!(!(!(
!(
!(
!(!(!( !( !( !(
!( !( !( !(!(
!(!(!( !(
!( !( !(
!(
!(
!(!(!(!(!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(!(!(!(
!(!(!(!(!(
!( !(!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(!(
!(
!(
!(!(
!(
!(!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!( !(!(!( !(!( !( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(!(
!( !(
!( !( !(
!(
!(
!(
!(
!( !( !(!(
!(!(
!(
!(
!(
!( !( !( !(
!(!( !(!(!(
!(
!(
!(!(!(!(
!( !(
!(
!(!(
!(
!(
!(
!(
!(!(
!(
!(
!( !( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(!(
!(
!(
!(
!(
!(
!(!( !( !(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!( !( !(
!(
!(!(
!( !(
!(
!(
!( !( !( !( !(
!(
!(!(!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(!(
!(
!(
!(!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !( !( !( !(
!( !( !( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !( !( !(
!(
!(
!(
!( !( !( !(!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(!( !( !( !(!(!(
!(
!(
!(
!(
!(!(
!(
!(!(!( !(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(!(!(
!(
!( !(
!(!(
!(
!( !(
!( !(
!(!(
!(!(
!(!(
!(
!(!(
!(!(
!(!(
!(
!(!(
!(!(!(
!(
!(!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(!(!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!( !( !( !(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!( !(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!( !( !(
!(
!(
!(
!(
!(
!(
!(
!(
!( !(
!(
!(
!(
!(
!(
!(!(
!(!(
!( !( !(
!( !(
!(
!(
!(
!(
!(
!(
!(!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(!(!(
!(
!(
!(
!(
!( !(!(!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(!(!(
#*
#*
#*
#*
#* #*
#*
#*
#*
#*
City of El Segundo
City of
Hawthorne
City of
Redondo
Beach
City of Hermosa
Beach
Pacific Ocean
Pier PS

LACSD PS
Palm
Ave PS
Pacific
Ave PS
Poinsetta
Ave PS
Meadows
Ave PS
Voorhees
Ave PS
Bell
Ave
PS
Civic
Center
PS
9TH ST
8TH ST
11TH ST

OCEAN DR
2ND ST
10TH ST
6TH ST

THE STRAND

VALLEY DR

HIGHLAND AVE

ROSECRANS AVE

AVIATION BLVD

MARINE AVE

SEPULVEDA BLVD

PACIFIC AVE
27TH ST

PECK AVE
35TH ST

ARDMORE AVE

MEADOWS AVE
19TH ST

ROWELL AVE

OAK AVE

ELM AVE

HERRIN ST
31ST ST
5TH ST
23RD ST

POINSETTIA AVE
3RD ST

MANHATTAN BEACH BLVD

VISTA DR

HARKNESS ST
21ST ST

ALMA AVE
15TH ST

CREST DR
18TH ST

ARTESIA BLVD
1ST ST
17TH ST
36TH ST
35TH PL
36TH PL

DIANTHUS ST
30TH ST
31ST PL
29TH ST
33RD PL
24TH ST

BLANCHE RD
4TH ST

WALNUT AVE
7TH ST
26TH ST

PINE AVE
20TH PL

MANHATTAN AVE

LAUREL AVE

GATES AVE

CEDAR WAY
28TH ST

BAYVIEW DR
34TH ST

JOHN PL

CURTIS AVE

WENDY WY
32ND ST

JOHNSON ST

MAGNOLIA AVE

PARKVIEW AVE

NELSON AVE
33RD ST
12TH ST
11TH PL

MANZANITA LN

RUHLAND AVE

MATHEWS AVE

PACIFIC PL

DUNCAN PL

FAYMONT AVE
13TH ST

CARLOTTA WAY

LYNNGROVE DR

VOORHEES AVE
3RD PL

PALM AVE
4TH PL

JOHN ST

DUNCAN AVE

KUHN DR

KEATS ST
5TH PL
16TH ST

BELL AVE
25TH ST
6TH PL

BOUNDARY PL

MAGNOLIA WAY

HIGHVIEW AVE
14TH ST

HERRIN AVE
18TH PL
7TH PL

LARSSON ST
2ND PL

VILLAGE CIR

CEDAR AVE
8TH PL
21ST PL
41ST ST
38TH ST
1ST PL
44TH ST

TENNYSON ST

ANDERSON ST
9TH PL

FAIRWAY DR

MANOR DR

AGNES RD
23RD PL
22ND ST

REDONDO AVE

RONDA DR
20TH ST

AVIATION WY
14TH PL

HOMER ST
27TH PL

SAUSALITO CIR

MARINE PL
26TH PL

PARK PL

MORNINGSIDE DR

GATEWAY DR

FRANCISCO ST

SEAVIEW ST

AVIATION PL

EL PORTO ST
10TH PL

VILLAGE DR
12TH PL

ARDMORE WY

CENTER PL
25TH PL

VILLA ESCUELA

HALEY WY
27TH WAY

CATALINA CT

INGLESIDE DR

BERMUDA CT

MARIN CT

OAK AVE
20TH ST
2ND ST
14TH ST

PINE AVE
33RD ST
23RD ST

POINSETTIA AVE
30TH ST
33RD PL
3RD ST
36TH ST
21ST ST
17TH ST

VOORHEES AVE
12TH ST
33RD ST
19TH ST
PECK AVE 18TH ST
28TH ST
15TH ST

REDONDO AVE

BELL AVE
36TH PL

PALM AVE
1ST ST
30TH ST
5TH ST
23RD ST
18TH ST

GATES AVE
26TH ST
15TH ST
18TH ST
17TH ST

JOHN ST
5TH ST

MAPLE AVE

LAUREL AVE
4TH PL
19TH PL
6TH PL
15TH PL
16TH PL
14TH ST
17TH PL
2ND PL
8TH PL
40TH ST
45TH ST
39TH ST
43RD ST
42ND ST

PROSPECT AVE
38TH PL

KELP ST

GULL ST

CHESTNUT AVE

CHABELA DR

SHELLEY ST

SHELL ST
34TH PL
34TH PL
34TH PL
34TH PL
12TH CT

MARINE PL

MARINE PL
26TH PL
30TH PL
30TH PL
30TH PL
30TH PL
32ND PL
32ND PL
32ND PL
32ND PL

MORNINGSIDE DR

WESTPORT

LONGFELLOW DR

LONGFELLOW DR
29TH PL
29TH PL
29TH PL
29TH PL

FLOURNOY RD

FLOURNOY RD
28TH PL
28TH PL
28TH PL
28TH PL

VILLAGE CENTER DR

MARKET PL
10TH PL
10TH PL
10TH PL

PARK WY

FISHER AVE

DUNCAN DR

MOONSTONE ST

ALTURA WY

CHATHAM

GRANDVIEW AVE

BRIDGEPORT
24TH PL
24TH PL
24TH PL
24TH PL

ROSECRANS PL

MALAGA WY

RAILROAD PL

CARRIAGE PL

EVERGREEN LN
11TH Pl

DEEGAN PL

LAUREL SQ
31ST WAY
13TH PL
13TH PL
12TH PL
25TH PL

TERRAZA PL

CHURCH ST

CAMBRIDGE

CAMINO CARDINELL

DOVER PL

MALAGA PLE

MALAGA PLW

ARBO LADO CT

HOMER PL

INGLESIDE DR

STRATFORD LAGUNA CT

BRYANT PL

CORONADO CT

CAYMAN CT
PACIFIC Pl

GRENADA CTSANTA CRUZ CT

MONTEREY CT

NANTUCKET PL

TIBURON CT

SANTA ROSA CT

PORTSMOUTH WY

CORDOBA CT

SAN MIGUEL CTLAFAYETTE CT
8TH PL
7TH PL
13TH ST
17TH ST

PINE AVE

CREST DR

MARINE PL
1ST PL

BAYVIEW DR
3RD ST
33RD PL
27TH ST
12TH PL

CREST DR
27TH PL
6TH ST
12TH ST
29TH ST
12TH ST
33RD PL
7TH PL

PACIFIC PL
35TH PL
31ST ST
14TH ST

CREST DR
23RD ST

VISTA DR
4TH PL
33RD ST
1ST PL
2ND PL

BAYVIEW DR
31ST PL
35TH PL
1ST ST

ELM AVE
2ND PL
9TH PL

WALNUT AVE
10TH ST
8TH ST

MANHATTAN AVE
36TH PL
23RD PL
6TH PL

HOMER ST
5TH PL
9TH ST
25TH PL

MARINE AVE
22ND ST
3RD ST
36TH PL
11TH ST
18TH ST
35TH ST
11TH PL
5TH ST
12TH ST

CREST DR
35TH PL
11TH PL

MARINE PL

BAYVIEW DR

CENTER PL
6TH ST
5TH PL
23RD PL
3RD PL
1ST PL
19TH ST
23RD PL
1ST PL
18TH ST
9TH PL

AGNES RD
1ST ST
3RD PL
21ST ST
3RD ST
31ST PL
33RD PL

BELL AVE
36TH PL
31ST PL
21ST PL
35TH PL
14TH ST

CURTIS AVE
31ST PL
25TH ST
23RD PL
³
0 1,200 2,400600
Feet
1" = 1200'
PROJECT NO: 1640901.10
DATE: September 2010

CITY OF MANHATTAN BEACH

WASTEWATER MASTER PLAN
CCTV Locations
Figure 8-1
Sewer Manholes
Manhattan Beach Sewage Pump Station
LACSD Sewage Pump Station
Manhattan Beach Forcemain
Manhattan Beach Sewer
LACSD Trunk Sewer
City Boundary
CCTV Inspection Location
Legend
!(
#*
#*

COLLECTION SYSTEM CONDITION ASSESSMENT

8-4 City of Manhattan Beach
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan

8-2.3 CONDITION GRADING

The PACP condition grading system was used to assign a condition rating for structural defects and operation and maintenance defects for each reach of pipe. The rating provides the ability to quantitatively measure the difference in pipe condition between one inspection and subsequent inspections, and to prioritize among different pipe segments. A grade of 1 to 5 is assigned to each defect based on potential for further deterioration or pipe failure. Pipe failure is defined as when it can no longer convey the design capacity. The grades are as follows:

5 – Immediate Attention Defect s requiring immediate attention 4 – Poor Severe defects that will become Gr ade 5 defects within the foreseeable future 3 – Fair Moderate defects that will continue to deteriorate 2 – Good Defects that have not begun to deteriorate
1 – Excellent Minor defects
A truly continuous defect is defined as a defect that ex tends more than 3 feet. A repeated continuous defect is defined as a defect that occurs in a length of pipe in at least 75 percent of the joints (i.e. 3 out of 4 joints).

The equivalent number (quantity) of “truly” and “repeating” continuous defects is calculated by dividing the length of the continuous defect by 5, normalizing the defects for comparison to other reaches. Each unit in the number of defects represents an occurrence of defect or a joint length of defective pipe. This is a PACP standard.

The grade values for the most common defects are shown in Table 8-1. For defects with variable grade values dependent on the degree of deficiency of the defect, an estimated average value was used.

Figure 8-2 shows the number of reaches where an ident ified deficiency was found at least once within the reach. It provides a general sense of the magnitude of the problems that were found in the City’s collection system. The problems identified most often were fine roots (835 reaches, 22% of total), cracks (563 reaches, 15% of total) and joint offset medium (437 reaches, 12% of total).

The structural defect score and O& M defect score is calculated by multiplying the number of occurrences of each defect by its assigned grade and summing them.

The structural defect index and the O&M defect index is calculated by dividing the defect score by the number of defects. It is an indicator of the distribution of defect severity.

Figure 8-3 is a plot of the number of reaches versus the highest deficiency grades found in each reach. For example, there were 218 reaches found with at least one structural deficiency grade of 5 and 4 reaches found with at least one operation and maintenance deficiency grade of 5.

Figures 8-4 through 8-6 illustrate the locations of the reaches with significant st ructural defec ts such as broken pipe, holes in pipe, and large joint offsets.

COLLECTION SYSTEM CONDITION ASSESSMENT

8-5 City of Manhattan Beach
Table 8-1
Defect Codes and Condition Grades
PACP
Code Structural Defect Coding Grade
PACP
Code
Operational & Maintenance and Construction
Features Grade
CL Crack - longitudinal 2 DAE Deposits Attached - encrustation 2 CC Crack - circumferential 1 DAGS Deposits Attached - grease 2 CM Crack - multiple 3 DAR Deposits Attached - ragging 2 CS Crack - spiral 2 DAZ Deposits Attached - other 2
FL Fracture - longitudinal 3 DSF Deposits Settled - fine 2 FC Fracture - circumferential 2 DSC Deposits Settled - hard/compacted 2 FM Fracture - multiple 4 DSZ Deposits Settled - other 2 FS Fracture - spiral 3 DNF Deposits Ingress - fine material (silt & sand) 2 BSV Broken - soil visible 5 RFB Roots Fine - barrel 2
BVV Broken - void visible 5 RFL Roots Fine - lateral 1
HSV Hole - soil visible 5 RFC Roots Fine - connection 1 HVV Hole - void visible 5 RFJ Roots Fine - joint 1
JOL Joint Offset - large 5b RMB Roots Medium - barrel 4 JOM Joint Offset - medium 3a RML Roots Medium - lateral 3 JSL Joint Separated - large 2 RMC Roots Medium - connection 3 JSM Joint Separated - medium 1 RMJ Roots Medium - joint 3 RPZ Point Repair - other 1 RBB Roots Ball - barrel 5
MWLS Miscellaneous - water level, sag. 2 RBL Roots Ball - lateral 4 RBC Roots Ball - connection 4
a PACP grade is 1. Grade was increased RBJ Roots Ball - joint 4 for this report, because defect is considered RTB Roots Tap - barrel 3 to be major. RTC Roots Tap - connection 2
b PACP grade is 2. Grade was increased RTJ Roots Tap - joint 2 for this report, because defect is considered IW Infiltration - Weeper 2 to be severe. ID Infiltration - Dripper 3
IR Infiltration - Runner 4
IG Infiltration - Gusher 5
OBI Obstacles - protruding through wall 4
OBJ Obstacles - wedged in joint 4
OBC Obstacles - through connection 4
OBP Obstacles -external pipe cable 4
OBS Obstacles - build into structure 4
OBN Obstacles - construction debris 4
OBR Obstacles - rocks 4
OBZ Obstacles - other 4
VC Vermin - cockroach 1
TFD Tap (Lateral) - factory made defective 2
TB Tap (Lateral) - break in 3
TBI Tap (Lateral) - intruding 3
TBA Tap (Lateral) - active 3
TBB Tap (Lateral) - abandoned 0
TBC Tap (Lateral) - capped 2
ISSRH Intruding Seal Material - ring hanging 4
LL Line - left 2
LD Line - Down 2
MCU Miscellaneous - camera underwater 4
MSC Miscellaneous - shape/size change 0
MMC Miscellaneous - material change 0
MSA Miscellaneous - survey abandoned 0
R:\Rpts\Manhattan Beach\Wastewater Master Plan Wastewater Master Plan

Manhattan Beach City CouncilJuly 15, 2025

Manhattan Beach City Council
July 15, 2025