HomeMy WebLinkAbout11. Consider approval of the 2022 Sewer System Management Plan (SSMP) five-year update Page 1 of 163
Item 11.
CENTRAL SAN BOARD OF DIRECTORS
POSITION PAPER
MEETING DATE: OCTOBER 6, 2022
SUBJECT: CONSIDER APPROVAL OF THE 2022 SEWER SYSTEM MANAGEMENT
PLAN FIVE-YEAR UPDATE AS MANDATED BYTHE CALIFORNIA STATE
WATER RESOURCES CONTROL BOARD
SUBMITTED BY: INITIATING DEPARTMENT:
PAUL SEITZ, COLLECTION SYSTEM OPERATIONS-COLLECTION SYSTEM DIV
OPERATIONS DIVISION MANAGER MANAGER
REVIEWED BY: JUSTIN WAPLES, ASSOCIATE ENGINEER
STEVE SAUTER, SUPERINTENDENT, OPERATIONS AND MAINTENANCE
JASON DEGROOT, SENIOR ENGINEER
STEVE MCDONALD, DIRECTOR OF OPERATIONS
Roger S. Bailey
General Manager
ISSUE
Board of Directors (Board) approval is required for the California State Water Resources Board
(SWRCB) mandated update of the Sewer System Management Plan (SSMP).
BACKGROUND
On May 2, 2006, the SWRCB approved Order No. 2006-0003, "Statewide General Discharge
Requirements for Sanitary Sewer Systems," to reduce and prevent sanitary sewer overflows.
I n July 2007, the Board approved the initial plan and schedule for the SSMP. An Order component
requires updating the SSMP at least every five years. I n 2012, in compliance with the Order, the Board
approved the first five-year update. I n 2017, in compliance with the Order, the Board approved the second
five-year update. This update will be the third five-year update of the SSMP.
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ALTERNATIVES/CONSIDERATIONS
None.
FINANCIAL IMPACTS
None.
COMMITTEE RECOMMENDATION
The Engineering and Operations Committee reviewed this matter at its September 14, 2022 meeting and
recommended Board approval.
RECOMMENDED BOARD ACTION
Adopt the 2022 Sewer System Management Plan five-year update.
Strategic Plan Tie-In
GOAL TWO: Environmental Stewardship
Strategy 1 -Achieve compliance in all regulations
GOAL SIX., Infrastructure Reliability
Strategy 2- Execute long-term capital renewal and replacement program
GOAL SEVEN:Innovation and Agility
Strategy 1 - Leverage data analytics to become a more efficient utility
ATTACHMENTS:
1. Proposed 2022 SSMP Five-Year Update
2. Presentation
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CENTRAL CONTRA COSTA SANITARY DISTRICT
SEWER SYSTEM MANAGEMENT PLAN
5019 Imhoff Place
Martinez, CA 94553
CIWQS WDID: 2SS010105
TABLE OF CONTENTS
Listof Tables............................................................................................................... iv
Listof Figures.............................................................................................................. vi
Listof Acronyms.......................................................................................................... viii
ChangeLog.................................................................................................................. x
Element1: Goals......................................................................................................... 1-1
WDRRequisites........................................................................................................ 1-1
Central San Compliance........................................................................................... 1-5
Element 2: Organization.............................................................................................. 2-1
WDRRequisites........................................................................................................ 2-1
Central San Compliance .......................................................................................... 2-1
Element 3: Legal Authority........................................................................................... 3-1
WDRRequisites........................................................................................................ 3-1
Central San Compliance .......................................................................................... 3-1
Element 4: Operations and Maintenance Program ....................................................... 4-1
WDRRequisites........................................................................................................ 4-1
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CentralSan Compliance .......................................................................................... 4-1
Element 5: Design and Performance Provisions............................................................ 5-1
WDRRequisites........................................................................................................ S-1
Central San Compliance........................................................................................... S-1
Element 6: Overflow Emergency Response Plan........................................................... 6-1
WDRRequisites........................................................................................................ 6-1
CentralSan Compliance........................................................................................... 6-1
Element 7: Fats,Oils,and Grease(FOG) Control Program ............................................. 7-1
WDRRequisites........................................................................................................ 7-1
Central San Compliance........................................................................................... 7-1
Element 8: System Evaluation and Capacity Assurance Plan.......................................... 8-1
WDRRequisites........................................................................................................ 8-1
Central San Compliance........................................................................................... 8-1
Element 9: Monitoring, Measurement, and Program Modifications.............................. 9-1
WDRRequisites........................................................................................................ 9-1
Central San Compliance........................................................................................... 9-1
Element 10:SSMP Program Audits............................................................................... 10-1
WDRRequisites........................................................................................................ 10-1
Central San Compliance........................................................................................... 10-1
Element 11:Communication Program.......................................................................... 11-1
WDRRequisites........................................................................................................ 11-1
CentralSan Compliance........................................................................................... 11-1
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Appendix A: Completed 2022 SSMP Audit.................................................................... A
Appendix B:Available Equipment Inventory ................................................................ B
Appendix C:Available Parts Inventory ......................................................................... C
Appendix D:Water Quality Monitoring Program.......................................................... D
Appendix E: Repair List for Lines within 200'of Surface Waters.................................... E
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LIST OF TABLES
Table 1.1 Service Area Infrastructure Estimates 1-3
Table 1.2 List of Sewer Lines by Size 1-3
Table 1.3 List of Sewer Lines by Material Type 1-4
Table 1.4 List of Sewer Lines by Pipe Age 1-4
Table 2.1 Legally Responsible Officials 2-1
Table 2.2 Staff Contacts Responsible for SSMP 2-2
Table 2.3 Sewer Overflow Responders List 2-5
Table 2.4 Chain of Command for Reporting 2-5
Table 4.1 Select Metrics for Operations and Maintenance Activities 4-6
Table 4.2 Cleaning Frequency Schedule 4-7
Table 4.3 CSO Warehouse Spares 4-33
Table 6.1 Central San Emergency Contact Numbers 6-2
Table 6.2 Central San Overflow Response Tactics 6-8
Table 6.3 Notification, Reporting, Monitoring, and Record Keeping Requirements 6-9
Table 7.1 FOG Control Statistics 7-4
Table 8.1 Capacity Project Schedule and Funding 8-7
Table 9.1 Performance Indicator Summary 9-3
Table 9.2 Annual SSO Statistics 9-4
Table 9.3 Comparative Data from CIWQS—Calendar years 2019-2021 9-6
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LIST OF TABLES (continued)
Table 9.4 Central San Program Element Updates 9-7
Table 10.1 Central San SSMP Annual Audit Report 10-1
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LIST OF FIGURES
Figure 1.1 Central San Service Area Map 1-2
Figure 2.1 Collection System Operations Division Schematic 2-6
Figure 4.1 GIS-Additional Details for Asset 4-4
Figure 4.2 Central San Rodder Truck 4-8
Figure 4.3 Central San Hydroflush Truck 4-9
Figure 4.4 Cleaning Frequency Flow Chart 4-10
Figure 4.5 Central San Maintenance Categories 4-12
Figure 4.6 Representation of Remote Level Monitoring System 4-16
Figure 4.7 CMMS—Work Order with Asset Mapped 4-17
Figure 4.8 Ten-Year Estimated Expenditure 4-19
Figure 4.9 CWMP Draft 100-Year Sewer Renovation Forecast 4-20
Figure 4.10 Risk-Based Analysis Process 4-21
Figure 4.11 Asset Management Plan Evolution 4-22
Figure 4.12 Confined Space Van 4-29
Figure 4.13 Emergency Pump Truck 4-30
Figure 4.14 Construction Vehicle 4-30
Figure 4.15 Emergency Response Pipe Trailer 4-31
Figure 4.16 CCTV Van 4-31
Figure 4.17 Portable Emergency Bypass Pump 4-32
Figure 4.18 Gorman Rupp Bypass Pump 4-32
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LIST OF FIGURES (continued)
Figure 6.1 SSO Intake Procedure, Slide 1 6-3
Figure 6.2 SSO Intake Procedure, Slide 2 6-4
Figure 6.3 Responding to a Sanitary Sewer Overflow, Slide 1 6-6
Figure 6.4 Responding to a Sanitary Sewer Overflow, Slide 2 6-7
Figure 8.1 2015-2016 Flow Monitoring Locations 8-2
Figure 8.2 Hydraulic Model Screenshot 8-3
Figure 8.3 Sewer Construction 8-6
Figure 8.4 Capacity Enhancement Process 8-6
Figure 9.1 Central San's Annual SSO Trends 9-5
Figure 9.2 SSOs Per Year by System 9-7
Figure 9.3 SSOs Per Year by Cause 9-8
Figure 9.4 SSOs by Volume 9-8
Figure 9.5 SSOs by Location 9-9
Figure 9.6 SSOs by Pipe Material 9-9
Figure 9.7 SSOs by Pipe Diameter 9-10
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LIST OF ACRONYMS
ABAG Association of Bay Area Governments
AMIP Asset Management Implementation Plan
AMP Asset Management Program
AVL Automatic Vehicle Location
BACWA Bay Area Clean Water Agencies
BMP Best Management Practices
BWF Base Wastewater Flow
CASA California Association of Sanitation Agencies
CCTV Closed Circuit Television
Central San Central Contra Costa Sanitary District
CIB Capital Improvement Budget
CIP Capital Improvement Plan
CIWQS California Integrated Water Quality System
CMMS Computerized Maintenance Management System
CODE Central Contra Costa Sanitary District Code
COF Consequence of Failure
CSO Collection Systems Operations
CWEA California Water Environment Association
CWMP Comprehensive Wastewater Master Plan
EC Environmental Compliance
EPA United States Environmental Protection Agency
ESRI Environmental Systems Research Institute
EUM Effective Utility Management
FOG Fats, Oils, and Grease
FSE Food Service Establishment
FY Fiscal Year
GARR Gauge Adjusted Radar Rainfall
GIS Geospatial Information System
GRD Grease Removal Devices
GWI Groundwater Infiltration
I/I Inflow and Infiltration
IPM Integrated Pest Management
LGIM Local Government Information Model
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LIST OF ACRONYMS (continued)
LOF Likelihood of Failure
LRO Legally Responsible Official for CIWQS System Reporting
MRP Monitoring and Reporting Program
NIMS National Incident Management System
NOV Notice of Violation
NPDES National Pollution Discharge and Elimination System
0&M Operations and Maintenance
OES Office of Emergency Services
OSHA Occupational Safety and Health Administration
PDWF Peak Dry Weather Flows
PM Preventive Maintenance
PWWF Peak Wet Weather Flows
QA/QC Quality Assurance and Quality Control
R&R Rehabilitation and Replacement
RCM Reliability Centered Maintenance
RDI/I Rainfall Dependent Inflow and Infiltration
RWQCB San Francisco Regional Water Quality Control Board
SEMS Standard Emergency Management System
SL-RAT Sewer Line Rapid Assessment Tool
SOP Standard Operating Procedure
SSMP Sewer System Management Plan
SSO Sanitary Sewer Overflow
SSOBRP Sanitary Sewer Overflow and Backup Response Plan
Standard Specs Standard Specifications for Design and Construction
SWRCB State of California Water Resources Control Board
TCP Technical Certification Program
USEPA See EPA
VCP Vitrified Clay Pipe
WDR Waste Discharge Requisites
WEF Water Environment Federation
WN Warning Notice
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CHANGE LOG
WDR, MONITORING, AND REPORTING PROGRAM
ORDER NO. WQ 2013-0058-EXEC REQUIREMENTS
E. RECORD KEEPING REQUIREMENTS
3. 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.
CENTRAL SAN COMPLIANCE
Approving
Authority
Element Change Description • • Date
1- Goals Added narrative on Central San's Strategic Plan Paul Seitz August 3, 2017
Reformatted Element
Added Table 1.1—Service Area Infrastructure Paul Seitz October 15, 2018
Estimates
Added Table 1.2—Inventory of Sewer Lines by Size
Added Table 1.3—Inventory of Sewer Lines by
Material Type
Added Table 1.4—Inventory of Sewer Lines by Pipe
Age
2- Organization Updated LRO names Paul Seitz August 3, 2017
Added Responsible Party for each Element
Updated Organization Chart
Updated staff role descriptions
Reformatted Element
Added Pumping Stations Role Descriptions Paul Seitz October 15, 2018
Added Table 2.3—Sewer Overflow Responder List
Added Table 2.4—Chain of Command for Reporting
Added Pumping Stations to Org Chart Figure 2.1
3- Legal Authority Added additional narrative regarding Central San's Paul Seitz August 3, 2017
legal authority
Reformatted Element
4- Operations and Item A:Sewer System Infrastructure Mapping Paul Seitz August 3, 2017
Maintenance • Added narrative on new GIS system
Program
Item B:
• Updated narrative on Operations description
• Added select metrics
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• Expanded narrative on Preventive Maintenance
• Updated Pipe Maintenance Schedule Flowchart
• Added narrative on private sewer laterals
• Added narrative for pipe cleaning QA/QC
program
• Added narrative on Remote Manhole Level
Monitoring system
• Added narrative on new CMMS system
Item C: Rehabilitation &Replacement
• Updated budget narrative and budget forecast
• Included narrative on risk-based planning
(InfoMaster°) program
• Included narrative on asset management
program
Item D:Training
4- Operations • Expanded training program narrative.
and • Included emergency response training narrative
Maintenance Paul Seitz August 3, 2017
Program Reformatted Element
(continued)
General Changes Paul Seitz October 15, 2018
Updated Figure 4.5
Table number changes
Additional language added regarding Chemical Root Paul Seitz October 15, 2020
Control—CRW
Additional language added regarding Bloodborne
Pathogen and Infection Disease training-CRW
5- Design Central San Specifications Amended in 2014; Paul Seitz August 3, 2017
Performance Amendment noted in the SSMP
Provisions Reformatted Element
6- Overflow Included narrative and flow charts from Central San's Paul Seitz August 3, 2017
Emergency 2017 Sanitary Sewer Overflow&Backup Response
Response Plan Plan
Reformatted Element
Additional language added regarding Sanitary Sewer Paul Seitz October 15, 2020
Overflow Response—CRW
Additional language added regarding water quality
sampling for Category 1 sanitary sewer overflows—
CRW
Additional language added to the chart for Sanitary Paul Seitz March 12,2021
Sewer Overflow notification to EBMUD
7- FOG Control Reformatted Element Paul Seitz August 3, 2017
Program
Added Table 7.1—FOG Control Statistics Paul Seitz October 15, 2018
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8- System Added narrative on Central San's new hydraulic Paul Seitz August 3, 2017
Evaluation and model and large-scale flow monitoring activities
Capacity Reformatted Element
Assurance Plan
9- Monitoring, Item A: Maintain Relevant Information Paul Seitz August 3, 2017
Measurement, Added narrative and list of Collection System
and Program Metrics Central San tracks
Modifications
Item B: Monitor and Measure Effectiveness
• Added performance indicator summary table
Item C:Assess Success of Maintenance Program
• Added additional narrative,annual SSO trend and
statewide comparison for calendar year 2016
Item D: Update program elements based on
performance
• Added table to summarize recent Central San
initiatives to improve overall collection system
performance
Item E: Identify and Illustrate Trends
• Added charts pertaining to various SSO-related
data
• Added commentary on trends,strategic SSO
reduction,and future priorities to further
optimize collection system performance
Reformatted Element Paul Seitz October 15, 2018
Updated Table 9.2
10- SSMP Audits Reformatted Element Paul Seitz August 3, 2017
Replaced Audit Template with current template Paul Seitz October 15, 2018
11- Communication Added additional narrative to better convey key Paul Seitz August 3, 2017
Program Central San Communications Program components
Reformatted Element
Appendices Added Appendix A—Completed 2018 SSMP Audit Paul Seitz October 15, 2018
Replaced Appendix A—Completed 2022 SSMP Audit Paul Seitz June 7, 2022
Added Appendix B—Available Equipment Inventory Paul Seitz October 15, 2018
Added Appendix C—Available Parts Inventory Paul Seitz October 15, 2018
Added Appendix D—Water Quality Monitoring Paul Seitz July 26, 2019
Program
Updated Appendix E—Capital Projects Sewer Line Paul Seitz March 8,2022
Repair List—CRW
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GOALSSSMP ELEMENT 1:
WDR REQUISITES
D.13. (i) Goal: 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 SSOs, as well as
mitigate any SSOs that do occur.
INTRODUCTION
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 a sanitary sewer overflow (SSO). A proactive system-wide operation, maintenance, and
management plan helps reduce the number and frequency of SSOs.
To reduce the number and volume of SSOs and their impact to human health and the environment, the
California State Water Resources Control Board (SWRCB) adopted the Statewide General Waste
Discharge Requirements (WDR) Water Quality Order No. 2006-0003, approved on May 2, 2006,
Provisions D.13.
The order requires public agencies that own or operate sanitary sewer systems greater than one mile in
length to develop, implement and maintain a Sewer System Management Plan (SSMP). The SSMP is a
living document: to facilitate proper funding and management of the sanitary sewer system.
CENTRAL SAN OVERVIEW
Central Contra Costa Sanitary District (Central San) manages and maintains approximately $2.5 billion in
physical collection system assets and provides roughly 487,300 customers and 3,000 businesses with
sanitary sewer service in the central Contra Costa area. Formed in 1946 as a Special District in Contra
Costa County, California, Central San has 294 budgeted employees. Central San operates a 1,500-mile
network of collection system piping and a treatment plant that processes an average daily flow of 32
million gallons. Refer to Figure 1.1 for Central San's Service Area Map.
Central San is responsible for collection and treatment of wastewater from the following communities:
• Alamo 0 Martinez 0 Pleasant Hill
• Clyde 0 Moraga 0 San Ramon
• Danville 0 Orinda • Walnut Creek
• Lafayette 0 Pacheco
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Central San also receives and treats wastewater from the City of Concord and City of Clayton collection
systems.
Central San's proven record of excellence includes more than 24 consecutive years of 100% compliance
with our National Pollutant Discharge Elimination System (NPDES) permit; innovative recycled water,
household hazardous waste, and pharmaceutical collection programs; and award-winning public
outreach and student educational programs. We are very proud of the recognition and awards Central
San has received over the years for innovation and excellence from regional, state, and national
associations. These accomplishments have been the result of our skilled and knowledgeable workforce,
our emphasis on continuous improvement, and our effective use of technology in all areas of operation.
A long-range goal of Central San is to provide the public with the most reliable collection system
possible. To do this in a fiscally prudent manner, Central San is investing in new computer software and
technological resources so that cleaning crews can maintain sewers efficiently and effectively, and
engineers can collect valuable data needed to prioritize sewer renovation and replacement projects.
This requires a comprehensive information system with interconnected software programs and
hardware tools that are user-friendly, accessible to field and office staff, and available across
departments.
Collection System Overview
Central San serves 484.200 customers within
Martinez its 145-square-mile service area.
0 Concord Wastewater collection&treatment;Household
Pleasant Hill Hazardous Waste(HHW)disposal for 344,600
Gayton people.
Walnut Creek
Lafayette Wastewater treatment&HHW disposal for
Orinda Alamo 139,600 people in Can cord&Clayton by contract.
Moravan�ille
HHW disposal only.
t
San Ramon
Central San headquarters,treatment plant,HHW
4WFacility&Residen tial Recycled Water Fill Station.
Figure 1.1 Central San Service Area Map
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The following four tables provide additional details to describe Central San's Collection System. Table
1.1 provides the miles of sewer lines, number of manholes, and number of pumping stations in the
collection system.
Table 1.1 Service Area Infrastructure Estimates
Pipelines, estimated miles 1,535
Manholes, each 30,887
Pumping Stations, each* 18
Siphons, each 51
* 3 are private but maintained by Central San
Table 1.2 shows a breakdown of the collection system by pipe diameter.
Table 1.2 Inventory of Sewer Lines by Size
•- Size Total
Inches Linear Feet
<6 1,279,093 15.8
5,379,895 66.4%
10 334,492 4.1%
245,760 j 3.0%
14 21,289 0.3%
172,467 2.1%
16 26,632 0.3%
137,801 1.7%
20 29,966 0.4%
36,178 0.4%
24 87,657 1.1
36,068 0.4%
30 88,831 1.1
4,803 0.1%
33 9,815 0.1%
48,606 0.6%
39 22,452 0.3%
42 12,060 0.1
45 12,405 0.2
48 11,333 0.1%
54 5,279 0.1%
60 44,739 0.6%
63 5,726 0.1%
66 13,959 0.2
72 8,325 0.1%
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Table 1.2 continued
78 7,726 ;00 84 7,457
87 90
90 2,102
96 4,051 0.0%
102 5,726 0.1%
Total 8,102,783 100.0%
Table 1.3 shows a breakdown of the collection system by pipe materials.
Table 1.3 Inventory of Sewer Lines by Material Type
ABS 865,166 10.7%
AC 1,467,070 18.1%
CAS 115,923 1.4%
CLTW 9,029 0.1%
CLTWC 40 0.0%
CML 1,019 0.0%
CMLC 34,877 0.4%
CMP 2,627 0.0%
DIP 369,713 4.6%
FRP 8,666 0.1%
HDPE 280,293 3.5%
PC 7,146 0.1%
PVC 1,631,470 20.1%
RCP 411,291 5.1%
SP 50 0.0%
VCP 2,684,667 33.1%
VAR 213,736 2.6%
Total 8,102,783 100.0%
Table 1.4 shows a breakdown of the collection system by the age of the sewer line.
Table 1.4 Inventory of Sewer Lines by Pipe Age
..- Construction Period
0-18 2000-Current 1,119,708 13.8%
19-38 1980- 1999 2,157,240 26.6%
39-58 1960- 1979 3,145,778 38.8%
59-78 1940- 1959 1,642,610 20.3%
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Table 1.4 continued
79-98 1920- 1939 34,633 0.4%
99-118 1900- 1919 2,397 0.0%
Unknown 417 0.0%
Total 8,102,783 100.0%
CENTRAL SAN MISSION, VISION & VALUES
MISSION
To protect public health and the environment.
VISION
To be an innovative industry leader in environmental stewardship and sustainability while delivering
exceptional service at responsible rates.
VALUES
Our core values guide our daily decisions and how we fulfill our mission,vision, and goals
• Customer Service
• Employees
• Integrity
• Innovation
• Environmental Sustainability
• Diversity, Equity, and Inclusion
Central San has an excellent track record in preventing SSOs through its scheduled cleaning program,
routine inspections, and careful planning. Some SSOs are unavoidable, such as those related to
vandalism and contractor error. All overflows are reported in accordance with the Regional Water
Quality Control Board (RWQCB) California Integrated Water Quality System (CIWQS).
Central San is proud of its record and its employees and looks forward to meeting future challenges.
CENTRAL SAN COMPLIANCE
To assist in the development of the 2017 SSMP Update, Central San
used "A Guide for Developing and Updating of Sewer System
Management Plans (SSMPs)," (2015). This guide is endorsed by the Bay
Area Clean Water Association (BACWA), California Water Environment
Association (CWEA), California Association of Sanitary Agencies (CASA),
and other professional organizations.
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WDR ITEM:
GOAL OF THE SSMP
In addition to meeting the requirements of the WDR Element 1: to provide a plan and schedule to
properly manage, operate, and maintain all parts of the sanitary sewer system, Central San strives to:
• Provide adequate capacity to convey design peak flows
• Minimize the frequency of SSOs
• Mitigate the impact of SSOs
CENTRAL SAN STRATEGIC PLAN
Every two years Central San updates its Strategic Plan: a roadmap to enable Central San to increase
efficiencies,fulfill its mission and continue in its role as stewards of the environment.
STRATEGIC PLAN
The Strategic Plan was developed in cooperation between staff and the Board of Directors and is revised
every two years. Challenges identified through the strategic planning process include: enhanced
customer expectation and public awareness, aging infrastructure, continued regulatory requirements,
financial constraints, expanded challenges associated with employee recruitment and retention, security
and emergency response concerns, sustainable regional water supply concerns and increased focus on
resource recovery.
When developing the Strategic Plan, Central San used the Effective Utility Management (EUM) model as
an overreaching tool to define attributes to be considered in implementing practices to improve our
operations and move towards continued sustainability.The EUM framework was originally developed by
the Environmental Protection Agency (EPA) and water industry leaders in 2007. The framework is made
up of 10 attributes that provide a succinct indication of where effectively managed utilities should focus
and what they should strive to achieve. The 10 attributes are: product quality, customer satisfaction,
employee leadership and development, operational optimization, financial viability, infrastructure
strategy and performance, enterprise resiliency, water
resource sustainability and stakeholder understanding and
support. The Strategic Plan is comprised of four categories: �•
goals, strategies, initiatives, and key success measures. Goals -
define where we are going, strategies define our plan for
achieving the goals, initiatives describe the tasks and actions
we need to accomplish in the near term, and key success MEETING US
T.
measures describe how we will evaluate our progress along
ACCONIPLISHIFIC
the way. IDUR MISSION
AND SERVING OUR
COMMUNITY IN THE
MOST EFFICIENT
AND CZ
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CONTINUOUS IMPROVEMENT
Central San strives to continually enhance the performance of its infrastructure and in addition, pursue
opportunities to grow its contribution to community and the environment. Examples of leading
initiatives undertaken within the last five years, or within the coming five years, are presented below:
Standard Specifications Update: Central San updated its Standard Specifications in 2022. A key
component of that update was enhancing the readability of the document to make it easier for
contractors and homeowners to find information within the document.
COVID Wastewater Surveillance: Central San has been participating in COVID wastewater
surveillance since Summer 2020. This includes participating in a coordinated effort between the US
Department of Health and Human Services (HHS) and the Centers for Disease Control and Prevention
(CDC) on a national effort to track the SARS-CoV-2 virus in wastewater as HHS announced the initiation
of the National Wastewater Surveillance System (NWSS). Central San is also actively engaged in county
and regional initiatives for COVID wastewater surveillance.
Siphon Grit Trap: Central San utilizes siphons to dip under obstructions to the gravity sewers. These
pipe dips can accumulate unwanted debris and cause operational and maintenance issues. Central San is
piloting a manhole design to capture the grit before it enters siphons,to reduce cleaning frequency.
Manhole Cutter: Central San has a need to frequently adjust manhole frames, to ensure the top of
manholes are flush with newly paved roads. Central San has acquired technology to enhance the
efficiency of this activity, and reduce the manual labor required to perform these on-going frame
adjustments.
Remote Manhole Monitoring Technology: This technology allows real-time monitoring of the depth
of wastewater within manholes. This timely information can better inform Central San on the
performance of its infrastructure. In 2021 Central San completed a pilot of remote manhole monitoring
technologies and is presently brainstorming strategies for a phased scale-up of a remote manhole
monitoring program for the collection system.
Large Diameter Pipe Program: Central San has embarked on a project (District Project (DP) 8443) to
commence focused inspection on its large diameter pipes. Central San is also pursuing a goal to develop
a large diameter pipe management program, to ensure this critical infrastructure is administered
optimally into the future.
Force Main Program: Central San will be embarking on a force main inspection project (DP 8444) and
associated management program to ensure continued optimum asset performance.
Collection System Master Plan Update: Central San is commencing a new Collection System Master
Plan Update project (DP 100028) in 2022, to support its Capital Improvement Budget forecasting,
including the 100-year sewer renovation forecast; and to identify significant projects to support the
continued performance of the infrastructure.
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Hydraulic Modeling: Central San will be updating the spatial, geometric, and commercial water
consumption data in its hydraulic modelling tools in 2023, to ensure the tool continues to facilitate
informed decisions regarding the capacity of its sewers, both during dry weather and peak wet weather
events.
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SSMP ELEMENT 2:
ORGANIZATION
WDR REQUISITES
D.13. (ii)Organization: The SSMP must identify:
(a) The name of the responsible or authorized representative as described in Section J of the WDR;
(b) The names and telephone numbers for management, administrative, and maintenance positions
responsible for implementing specific measures in the SSMP program. The SSMP must identify lines of
authority through an organizational chart or similar document with a narrative explanation, and
(c) The chain of communication for reporting SSOs, from receipt of a complaint or other information,
including the person responsible for reporting SSOs to the State and Regional Water Board and other
agencies if applicable (such as County Health Officer, County Environmental Health Agency, Regional
Water Board, and/or State Office of Emergency Services(OES).
WDR ITEMS A & B:
AUTHORIZED REPRESENTATIVE & RESPONSIBLE PARTIES
CENTRAL SAN COMPLIANCE
The Collection Systems Operations(CSO) Division Manager has the overall responsibility for the development,
management, and implementation of Central San's SSMP. Table 2.1 identifies Central San's Legally
Responsible Officials (LRO).
Table 2.1 Legally Responsible Officials
R• Position Responsible
CSO Division Manager Paul Seitz 925-335-7743 pseitz@centralsan.org
Superintendent-Operations and Steve Sauter 925-229-7150 steve@centralsan.org
Maintenance
Maintenance Supervisor Alex Benavidez 925-383-0795 abenavidez@centralsan.org
Maintenance Supervisor Tifton Gantt 925-229-7163 tiff@centralsan.org
Maintenance Supervisor Chris Johnsen 925-383-0686 cjohnsen@centralsan.org
Maintenance Supervisor Ed Silva 925-229-7176 esilva@centralsan.org
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Central San's chain of communication for individuals who are responsible for the SSMP Elements are shown
in Table 2.2.
Table 2.2. Staff Contacts Responsible for SSMP
Element Element Name Responsible
Name
1 Goals CSO Division Paul SeitzLRO
Manager ( ) 925-335-7743 pseitz@centralsan.org
2 Organization CSO Division Paul Seitz(LRO) 925-335-7743 pseitz@centralsan.org
Manager
Environmental &
3 Legal Authority Regulatory Lori Schectel 925-229-7143 Ischectel@centralsan.org
Compliance Division
Manager
Superintendent— Steve Sauter
4 0&M Program Operations and (LRO) 925-229-7150 steve@centralsan.org
Maintenance
Design & Capital Projects-
5 Performance Collection System Alexandr 925-229-7261 smestets@centralsan.org
Provisions Program Senior Mestetsky
Engineer
Overflow Superintendent— Steve Sauter
6 Emergency Operations and (LRO) 925-229-7150 steve@centralsan.org
Response Program Maintenance
FOG Control Environmental
7 Program Compliance Tim Potter 925-229-7380 tpotter@centralsan.org
Superintendent
System Evaluation Planning&Applied
8 &Capacity Research Associate Justin Waples 925-229-7368 jwaples@centralsan.org
Assurance Engineer
Monitoring,
9 Measurement& Senior Engineer Jason DeGroot 925-383-0171 jdegroot@centralsan.org
Program
Modifications
10 SSMP Program CSO Division Paul Seitz(LRO) 925-335-7743
Audits Manager pseitz@centralsan.org
11 Communications Communication
Program Services&Inter- Emily Barnett 925-229-7310 ebarnett@centralsan.org
governmental
Relations Manager
The most current version of Central San's organizational structure is located on its website at centralsan.org.
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ROLE DESCRIPTIONS
The roles are briefly stated as follows:
Director of Operations: Directs, manages, and administers all operational, engineering, and administrative
activities of Central San.
Collection System Operations Division Manager: The CSO Division Manager is the responsible
representative for declaring all reports required by the State Water Resources Control Board Order No.
2006-003. The CSO Division Manager directs the activities of the CSO field operations and maintenance
activities and provides input for Engineering and Technical Services Department staff to optimize capital
construction projects for sewers in need of renovation or upgrade.
Superintendent - Operations and Maintenance: The authorized representative for reporting SSOs to the
State and Regional Water Boards and other agencies as applicable. The Field Operations Superintendent
plans,organizes,directs,controls,and reports on the activities of the Field Operations Section and coordinates
activities among the groups of the Section, within the Division, the Department, and the District.
Maintenance Supervisor: Plans, organizes, directs, reviews, and reports on the work of field crews in the
construction, repair, cleaning, locating and inspection of the sewer collection system. Assigned as Supervisor
for one of the sections in the CSO Field Operations Section.
Lead Maintenance Crew Member: Directs the work of a crew and participates in the construction, repairing,
cleaning, locating, and closed-circuit television (CCTV) inspection for the sewer collection system and recycled
water distribution systems; performs administrative duties as assigned such as daily reporting and monthly
inventories; regularly assist in the training of Maintenance Crew Members or Utility Workers in equipment
operations, departmental procedures, and safety practices.
Plant Maintenance Division Manager:The Plant Maintenance Division Manager directs the activities of the
Pumping Stations field operations and maintenance activities and provides input for Engineering and
Technical Services Department staff to optimize capital construction projects for pumping stations in
need of renovation or upgrade.
Superintendent - Operations and Maintenance: The Pumping Stations Superintendent plans, organizes,
directs, and reviews the activities of the Pumping Stations. The Pumping Stations Superintendent reports
and coordinates activities among the Operators of the stations, within the Division, the Department, and the
District.
Pumping Stations Operator III: Directs the work of a crew and participates in the operation, inspection,
maintenance, and repair for the pumping stations facilities; performs administrative duties as assigned such
as daily reporting and monthly inventories; regularly assist in the training of lower-level Pumping Stations
Operators in equipment and system operations, departmental procedures, and safety practices.
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SSMP IMPLEMENTATION
CSO focuses on the day-to-day tasks such as cleaning, CCTV inspection, locating, repairs, maintenance,
and SSO response and reporting. The Engineering and Technical Services Department oversees the long-
term needs of the collection system such as renovation and capacity planning, mapping, and enforcing of
Central San standards. While the physical activities of CSO and the Engineering and Technical Services
Department are different, management and staff share information and work together as a team.
SSMP UPDATING
The documents that are referred to in the SSMP are each the responsibility of a particular workgroup to
maintain and update, as needed. For example, the Environmental Compliance workgroup is responsible
for writing and updating the Fats,Oils, and Grease (FOG) control program document, and the CSO Division
is responsible for the Sanitary Sewer Overflow & Backup Response Plan (SSOBRP). Refer to Table 2.2.
WDR ITEM C:
CHAIN OF COMMUNICATION FOR SSO REPORTING
KEY COMMUNICATION ELEMENTS
Central San's chain of communications for reporting SSOs is documented in the SSOBRP and can be found
online at centralsan.org.
CSO is responsible for responding to overflows, cleanup, and reporting these overflows in accordance with
regional and state requirements. Central San's SSOBRP and the Pumping Station Emergency Response Plan
contain Central San's procedures and staff responsibilities.
Key elements of these plans include:
1. SSO notification chain of command
2. First responder responsibilities
3. Documentation requirements
4. SSO tracking
5. Regional reporting requirements
6. Contact phone numbers
Central San has participated in the online reporting process, as required by the RWQCB, beginning in
September 2004 as a beta-test agency and as part of the formal required process beginning in December
2004. The document describing the requirements can be accessed from RWQCB's website. All overflows are
tracked in a database administered by CSO.
In addition to the notification of SSOs,Central San has developed contact numbers for other collection system
issues, such as odor complaints and illegal discharges that may be associated with the sewer system. This
system allows any individual who identifies such issues to report the problem to Central San. The phone is
answered 24 hours per day. Contact information is also available at centralsan.org.
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The following two tables provide additional information regarding response to a Sanitary Sewer Overflow and
reporting the SSO to regulatory agencies. Table 2.3 lists the name of staff, in order, for responding to an
ongoing SSO event.This staff member is responsible for all regulatory notifications,verify that procedures are
followed,and to call for additional resources if needed.Table 2.4 lists the name of the staff who is responsible,
in order, for submitting and certifying information in CIWQS.
Table 2.3-Sewer Overflow First Responders List
Title 24-hour Contact .-
Alex Benavidez- LRO Maintenance -Supervisor- Rodding 925-383-0795
Maintenance -Supervisor-CCTV and
Chris Johnsen - LRO Locating 925-383-0686
Ed Silva - LRO Maintenance -Supervisor- Hydro 925-260-0557
Tifton Gantt- LRO Maintenance -Supervisor-Construction 925-766-0165
Superintendent-Operations and
Steve Sauter- LRO Maintenance 925-260-2046
Collection System Operations Division
Paul Seitz- LRO Manager 925-383-0033
Jason DeGroot Senior Engineer 925-383-0171
Table 2.4-Chain of Command for Reporting
Chris Johnsen - LRO Maintenance Supervisor-CCTV and Locating
Alex Benavidez- LRO Maintenance Supervisor- Rodding
Ed Silva - LRO Maintenance Supervisor- Hydro
Tifton Gantt- LRO Maintenance Supervisor-Construction
Steve Sauter- LRO Superintendent-Operations and Maintenance
Paul Seitz- LRO Collection System Operations Division Manager
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ORGANIZATION
An organization chart identifying lines of authority within CSO is presented in Figure 2.1 below.
General Manager
Director of
Operations
.. Plant Maintenance
Division Mana22—r--
07"M MM
SUPPORT
Admin-Services Asst- 11
FLEET
SERVICES
LOCATING
Supervisor 1 P.
7 1
Figure 2.1. Collection System Operations Division Schematic
(Number indicates quantity of authorized positions)
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SSMP ELEMENT 3:
LEGAL AUTHORITY
WDR REQUISITES
D.13. (iii) Legal Authority: Each 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
(1/I), storm water, chemical dumping, unauthorized debris and cut roots, etc.);
(b) Require that sewers and connections be properly designed and constructed;
(c) Ensure access for maintenance, inspection, or repairs for portions of the lateral owned or maintained
by the Public Agency;
(d) Limit the discharge of fats, oils, grease, and other debris that may cause blockages; and
(e) Enforce any violation of its sewer ordinances.
CENTRAL SAN COMPLIANCE
Central San receives its legal authority from the California Health & Safety Code, Division 6, Part 1. This
statute is referred to as the Sanitary District Act of 1923. Central San was established in 1946 as a special
district in Central Contra Costa County.
With this authority, Central San's Board of Directors passes ordinances that are incorporated into the
Central San Code (Code), and the Standard Specifications for Design and Construction (Standard Specs).
These documents govern all aspects of the sewage collection system, from the connection of the private
lateral to the terminus of Central San's outfall in Suisun Bay.
CENTRAL SAN CODE
The Code is available on Central San's website and at the following link:
https://library.municode.com/ca/central contra costa sanitary district/codes/code of laws
The Code is composed of the following Titles:
Title 1 GENERAL PROVISIONS
Title 2 ADMINISTRATION
Title 3 (Reserved)
Title 4 PERSONNEL
Title 5 PERMITS AND LICENSES
Title 6 FEES AND CHARGES
Title 7 REAL PROPERTY AND IMPROVEMENTS
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Title 8 (Reserved)
Title 9 SEWERS
Title 10 SOURCE CONTROL(PRETREATMENT)
Title 11 RECYCLED WATER
Title 1 of the Code grants Central San the power to enter private property to inspect sewer facilities, levy
fines, and terminate service if users fail to comply with Central San's rules and policies. Other titles have
additional enforcement provisions that expand upon these powers granted in Title 1. For example,Title 10
enables Central San staff to conduct inspections and obtain samples from businesses discharging to
Central San's system to ensure compliance with the Source Control (Pretreatment) standards. FOG
discharges are regulated under Title 10 (see Element 7 FOG Control Program).
Provisions in Title 6 of the Code grant Central San the power to assess fees to recoup operating and capital
costs of Central San from users.
Central San uses its Standard Specs to describe how to properly install and operate sewer lines in Central
San's service area.The legal authority for this document is cited from Title 9 of the Code,Section 9.08.010
— Planning, Design and Construction:
Sewers that are intended for dedication to Central San as public sewers shall be planned, designed,
constructed, installed and repaired in accordance with this code and Central San's Standard Specs for
Design and Construction (referred in this code as "standard Specs"). The standard Specs shall be
established and may be amended from time to time by ordinance and kept on file with Central San's
Secretary[of the District]in an uncodified manner. The use of any sewer facility connected to Central San
system that fails to comply with the standard Specs applicable at the time of its connection to Central San
sewer facilities constitutes a danger to human health and safety, public and private property and the
environment, and shall be considered a public nuisance.
(Ord. 253 § 1 (Exh. A(part)), 2008)
Central San's Standard Specs also establish standards for installation of pretreatment equipment including
grease removal devices.
Central San's current Standard Specs can be located on its website and by using the following link:
http://centralsan.org/documents/Standard Specs 2014 Edition Amended August 2015.pdf
SERVICE AGREEMENTS WITH TRIBUTARY SYSTEMS
In addition to serving its prescribed territory, Central San provides sewage treatment services for the City
of Concord (Concord) and the City of Clayton (Clayton). These cities operate and maintain their own
collection systems, which ultimately deliver their sewage to Central San's Martinez treatment facility.
Concord has entered into a service agreement with Central San that stipulates they must operate their
collection systems in accordance with Central San codes and policies;the flow from Clayton is treated as
a portion of Concord's flow since Concord performs the maintenance on the sanitary sewer collection
system in Clayton. As part of this service agreement, Central San has authority to conduct pretreatment
inspections to enforce the requirements of the Source Control Ordinance(Title 10) in the cities of Concord
and Clayton.
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WDR ITEM A:
PREVENT ILLICIT DISCHARGES
Central San's Source Control ordinance in Title 10 contains section 10.08.040 (quoted below) which
prohibits a wide range of illicit discharges(e.g., inflow,storm water, chemical dumping, and unauthorized
debris).
10.08.040 Prohibited substances or characteristics.
A user shall not discharge, or cause to be discharged, directly or indirectly to a District facility any
of the following:
A. Any liquids, solids, or gases which by reason of their nature or quantity are, or may be,
sufficient either alone or by interaction with other substances to cause fire or damage to
District facilities or to be injurious to human health and safety or to the operation of District
facilities. At no time shall a waste stream exceed a closed cup flash point of less than one
hundred forty degrees (140 °) Fahrenheit or sixty degrees (60 °) Centigrade using the test
method specified in 40 CFR Part 261.21. Also, at no time shall two (2)successive readings on
a combustible gas meter, at the point of discharge into the system (or at any point in the
system) be more than five percent(5%) nor any single reading over ten percent(10%) of the
Lower Explosive Limit(LEL)of the meter. The meter shall be properly calibrated in accordance
with the manufacturer's instructions using pentane as the calibration standard. The materials
which may be prohibited if they cause explosive or fire dangers as defined herein include, but
are not limited to, gasoline, kerosene, naphtha, benzene, toluene, xylene, ethers, alcohols,
ketones, aldehydes,peroxides, chlorates,perchlorates, bromates, carbides, hydrides,sulfides,
or any other substance which is a fire or explosion hazard.
B. Any solid or viscous substance in amounts or concentrations which may cause or threaten to
cause obstruction to the flow in a sewer or pass-through of, or interference with, the
operations of any District facilities such as, but not limited to,feathers, ashes, cinders, sand,
spent lime, stone or marble dust, metal, glass, straw, shavings, grass clippings, rags, spent
grains,spent hops, waste paper, wood, plastic, tar, asphalt residues, residues from refining or
processing of fuel or lubricating oil, petroleum oil, non-biodegradable cutting or machine oils,
products of mineral origin, mud, cement grout, glass, grinding or polishing wastes, grease,
garbage with particles greater than one-half inch (1/2") in any dimension, animal guts or
tissues, paunch manure, bones, hair, hides or fleshings, entrails, or whole blood.
C. Any wastewater having a pH less than 5.5 or equal to or greater than 11.5, or wastewater
having any other corrosive property capable of causing damage or hazard to structures,
equipment, humans, or animals.
D. Any wastewater containing hazardous pollutants in sufficient quantity, either singly or by
interaction with other pollutants, to injure or interfere with any wastewater treatment
process, constitute a hazard to human or animal health or safety, create an adverse effect on
the waters of the State, or to exceed the limitations set forth in a national pretreatment
standard.
E. Any wastewater having a temperature which will inhibit biological activity in the treatment
plant resulting in interference or pass through, but in no case wastewater which causes the
temperature at the introduction into the treatment plant to exceed forty degrees (409)
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Centigrade (one hundred four degrees (1042) Fahrenheit) or with a temperature at the point
of discharge to the District's collection system which exceeds sixty-five degrees (652)
Centigrade (one hundred fifty degrees(1502)Fahrenheit).
F. Any pollutants, including oxygen- demanding pollutants (BOD, COD, etc.) released at a flow
rate and/or pollutant concentration that alone or in combination with others, may cause
interference or pass through. Regardless of whether a slug load causes or will cause
interference or pass through, in no case shall a slug load have a flow rate or contain
concentrations or quantities of pollutants that exceed for any time period longer than fifteen
(15) minutes, more than five (5) times the average twenty-four (24) hour concentration,
quantities, or flow during normal operation.
G. Any discharge which results in toxic gases, vapors, or fumes in a quantity that may cause acute
worker health and safety problems within any District facility.
H. Any noxious or malodorous liquids, gases, or solids.
1. Any wastewater containing any radioactive wastes or isotopes exceeding any limits set forth
in 10 CFR 20.2003.
J. Any storm water, groundwater, rainwater, street drainage, subsurface drainage, yard
drainage, diatomaceous earth filter backwash, or swimming pool drainage, unless a specific
permit is issued by the District. The District may approve such discharge only when no
reasonable alternative is available or such water is determined to constitute a pollution hazard
if not discharged to the sewer.
K. Any unpolluted water, including but not limited to cooling water,process water or blow-down
from cooling towers or evaporative coolers, or any other unpolluted water unless a permit for
such has been obtained from the District prior to the discharge. The District may approve the
discharge of such water only when no reasonable alternative method of disposal is available
or such alternative, in the determination of the District, is unacceptable.
L. Any septic tank waste, holding tank waste,portable toilet waste, grease interceptor waste, or
oil and sand interceptor waste, unless a permit is issued by the District, or unless such sludge
or waste is transported to the District by a permitted waste hauler in accordance with the
regulations set forth in Chapter 10.28 of this Ordinance.
M. Any waste defined as hazardous, by any definition set forth in federal and/or state statutes or
regulations, unless such waste has been delisted or decertified by the appropriate federal or
state agency, and/or a variance has been granted by the appropriate federal or state agency,
including provisions for discharge to a District facility, and said variance provisions are
approved by the District.
N. Any substance, waste, wastewater, or constituent thereof as may be specifically prohibited or
prohibited by concentration levels as may be set forth in local limits adopted by resolution of
the District Board and a copy of said standards having been placed on file at the District office.
O. Any substance, waste, wastewater, or constituent thereof which may by itself or in
combination with other discharges cause the District to violate any permit conditions related
to toxicity of the effluent or otherwise cause or contribute to the potential for toxic substances
being released from District facilities into the environment in toxic amounts.
P. The following constituents are subject to a discharge prohibition standard in lieu of setting
numeric discharge limits. The presence of these constituents documented through approved
analytical methods shall be a violation of this section and be subject to corrective actions by
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the user to control the discharge of the constituent present. Wastewater discharge permits
may establish discharge prohibition(s)for constituents not included in this section for specific
Industrial Users.
a. Cyanide for unpermitted users
b. Dioxin compounds
c. Polychlorinated Biphenyls(PCBs)
d. Tributyltin (TBT)
e. Dieldrin
f. 4,4'-DDE
g. Perchloroethylene wastes and wastewaters from dry cleaner operations
(Ord. 253 § 1 (Exh. A(part)), 2008)
Infiltration is regulated in Sections 4-01 and 4-02 of Central San's Standard Specs.The area of the property
and the mean annual rainfall are used to calculate an acceptable volume of infiltration flow.
Central San has entered into an interagency agreement with the City of Concord to receive and treat flow
from its collection system. While this agreement does not specifically address inflow and infiltration (1/1)
issues, it states that the City of Concord must follow the same practices in their collection systems that
are employed in Central San's system. The City of Clayton discharges sewer flow from their collection
system into the City of Concord's collection system, and a memorandum of understanding between
Central San and the City of Clayton also states that Central San practices must be followed in their service
territory.
In accordance with the service agreement and memorandum of understanding, the City of Concord
receives bills from Central San that are based on volume received. The City of Concord then shares these
costs with the City of Clayton. Therefore, both Concord and Clayton have an incentive to control 1/1 flows
to reduce their bills.
Central San's Environmental Compliance workgroup enforces the requirements of Title 10 that includes
section 10.08.040 referenced above. Customers that have connections or discharges that violate this
section (e.g., roof leaders connected to sanitary sewer drains) are cited and required to remedy the
condition.
WDR ITEM B:
PROPER DESIGN AND CONSTRUCTION
Central San uses Title 5 (Permits and Licenses) and Title 9 (Sewers) of the Code and Central San's Standard
Specs to ensure that any changes to the collection system are properly designed and constructed. The
ordinances that create this authority are Central San Ordinances 116, 154, 198, and 223.
Chapter 5.04 (General Provisions of Permits and Licenses) of the Code and Section 11 of Central San's
Standard Specs (Control of the Work) describe the requirements for installation,testing, and inspection of
collection system modifications.The ordinances that create this authority are Central San Ordinances 198
and 223.
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WDR ITEM C:
ENSURE ACCESS
Central San has rights to enter private property for maintenance, inspection, or repairs of Central San's
collection system or for work being conducted on private laterals as specified in Section 1.08.020 of the
Code. In addition,Central San establishes and maintains easements in private property where Central San's
system is located to establish rights for access but also to restrict certain activities (e.g., building structures
over sanitary sewer main lines).
Section 10.12.080 Rights of Entry ensures access for Central San's Environmental Compliance workgroup
to private property to inspect, sample, or monitor the operations of businesses subject to Title 10 of the
Code.
WDR ITEM D:
CONTROL DISCHARGES (E.G., FOG, DEBRIS)
Any discharge that causes a broad range of prohibited effects within Central San's system is in violation of
sections 10.08.030A-D of the Code (quoted below). Remedies available to Central San include assessing
penalties, suspension of service, permanent disconnection, and criminal prosecution which are described
in more detail in the enforcement section in this element.
10.08.030 Prohibited effects.
A user may not discharge, or cause to be discharged, wastewater into any District facility if it
contains substances or has characteristics which either alone or by interaction with other
wastewater, cause or threaten to cause:
A. Damage to District facilities;
B. Interference or impairment of operation or maintenance of District facilities;
C. Obstruction of flow in District facilities;
D. Hazard to human life,
E. Interference with treatment plant or disposal processes,including recycling or any reclamation
processes;
F. The treatment plant's effluent or any other product of the treatment plant such as residues,
sludge, ash, or scum, to be unsuitable for reclamation and reuse. In no case shall substances
discharged to the District facilities cause the plant to be in noncompliance with sludge use or
disposal criteria, guidelines, or regulations,
G. The District to violate its National Pollutant Discharge Elimination System (NPDES)permit or
the receiving water quality standards;
H. Flammable or explosive conditions;
I. A noxious or malodorous condition, a public nuisance, a hazard to life, or conditions sufficient
to prevent normal entry into the sewers or other District facilities for maintenance and repair;
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J. Objectionable coloration or other condition in the quality of the District's treatment plant
influent which interferes with or passes through the treatment plant;
K. Conditions which violate any statue, rule, regulation, or ordinance of any public agency,
relating to releases of hazardous waste, hazardous substances, or other pollutants to the
environment when such release is to a publicly owned sanitary sewer;
L. Any alteration or change of the District's NPDES permit or any additional regulatory
supervision, intervention, or oversight of the District's operations,
M. Any alteration of the District's treatment plant processes,and
N. Any significant alteration of District operations, including but not limited to, affecting the
ability of the District to procure adequate insurance and/or subjecting the District operations
to significantly increased potential liability.
Chapter 10.32 of the Code contains standards specific to controlling FOG discharges to Central San's
collection system including authority to require installation of, and maintenance standards for, grease
removal devices. Element 7 FOG Control Program identifies the program activities conducted to enforce
the standards in Chapter 10.32.
Central San's Environmental Compliance workgroup uses the standards established in Title 10 that include
Section 10.08.030, Chapter 10.32, or Discharge Permits to regulate the quantity and quality of discharges
from businesses operating in Central San's service area. These standards apply to fixed facilities with
permanent connections to Central San's collection system and temporary dischargers (e.g., dewatering
from construction projects, and mobile service providers).
WDR ITEM E:
ENFORCEMENT
Sections 1.08-1.20,5.10,6.24.050,and 10.16.010 of the Code prescribe the enforcement actions available
to Central San when violations of the Code are documented. Central San Ordinances 117, 198, and 223
are used as the legal basis for these chapters.All enforcements and remedies are cumulative.Violation of
the Code is a misdemeanor in accordance with Central San Code Sections 1.08.060A and 10.16.080A, and
section 6523, Health and Safety Code, State of California.
Customers or contractors who violate the provisions of the Code will receive a notice of violation and may
be assessed penalties, charged cost recovery, have their service suspended or disconnected, or charged
with a misdemeanor.Contractors may forfeit any bonds in association with their work,and lose the ability
to do future work with Central San. Central San may disconnect and/or correct any defective work and
collect the costs from the customer or the contractor.
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SSMP ELEMENT 4:
OPERATIONS AND MAINTENANCE PR•
WDR REQUISITES
D.13. (iv) Operation and Maintenance Program: The SSMP must include those elements listed below that
are appropriate and applicable to the Enrollee's system:
(a) Maintain an up-to-date map of the sanitary sewer system, showing all gravity line segments and
manholes, pumping facilities, pressure pipes and valves, and applicable 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. 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 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;
(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.
CENTRAL SAN COMPLIANCE
GENERAL
Central San was established in 1946 under the Sanitary District Act of 1923.Central San is a special district,
with fiscal and administrative autonomy. Central San is empowered to tax its residents to fund its
operations. Central San uses an enterprise fund to provide for its operations and currently has one
enterprise fund which is comprised of four internal sub-funds:
• Running Expense — accounts for the general operations of Central San. Substantially all operating
revenues and expenses are accounted for in this fund (also referred to as Operations&Maintenance
or O&M).
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• Sewer Construction — accounts for non-operating revenues that are to be used for acquisition or
construction of plant, property and equipment (also referred to as the Capital Fund).
• Self-Insurance—accounts for interest earnings on cash balances in this sub-fund and cash allocations
from other funds, as well as costs of insurance premiums and claims not covered by Central San's
insurance policies.
• Debt Service Fund — accounts for activity associated with the payment of Central San's long-term
debt in the form of bonds and loans.
Each year, the Board adopts the following four budgets: Capital Improvement, Operations and
Maintenance, Self-Insurance, and Debt-Service.
Central San publishes a Comprehensive Annual Financial Report that is submitted to the Government
Finance Officers Association for independent review. These are available on Central San's website at
centralsan.org.
RESOURCES
Central San employs 294 budgeted employees organized in three departments led by Department
Directors, who are responsible for their budgets and expenses, and report to the General Manager. The
three departments are:Administration, Engineering&Technical Services, and Operations.
The division responsible for the maintenance and operation of the sewer system is CSO. The other
departments provide support to CSO as needed. The Administration Department provides human
resources, purchasing,financial, and outreach support.The Engineering&Technical Services Department
is responsible for Capital Projects to renovate, replace, and increase capacity of the sewer system. In
addition,the Engineering&Technical Services Department also manages new customer connections and
long-range planning.
Within CSO,there are 56 budgeted positions, not including the General Manager, Director of Operations,
CSO Collection System Division Manager, or the Plant Maintenance Division Manager, who operate and
maintain Central San's 1,500 miles of sewer. They are supported by staff in fleet maintenance services,
maintenance data management, and safety.
WDR ITEM A:
SANITARY SEWER SYSTEM INFRASTRUCTURE MAPPING
GEOSPATIAL INFORMATION SYSTEM
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Central San uses a new Geospatial Information System -------
(GIS)to manage sewer-related spatial data using ESRI®GIS
software. In addition, Geocortex software is used to link ®�• .
external databases to geospatial data in the GIS and -
further enhance functionality.
The GIS system was developed using Environmental
4
Systems Research Institute's (ESRI) Local Government
Information Model (LGIM). The LGIM incorporates many
a F.
best practices for water and wastewater utilities and is
configured to Central San's needs. The LGIM makes -
deploying and updating maps and applications more
efficient and promotes ease of sharing data with satellite
agencies through standardization.
The internal web mapping solution is referred to as GeoPortal by Central San staff. Pipe segments,
manholes,junction structures, pumping stations, Central San-owned properties, or other fixed assets are
depicted on a dynamic map.
AVAILABLE DATA
GeoPortal allows staff to turn on/off combinations of layers and/or base maps to display the information
they need.
Map layers available through GeoPortal include:
• Collection System Assets—including structures and pipelines, and pumping stations
• Waterways
• Roadways
• Administrative Boundaries
• Parcel Boundaries
• Right-of-Way and Easement Boundaries (as available)
• Other Agencies' Utilities (as available, such as water, storm water, and power)
Datasets or reports associated with map features include:
• Asset-related information including:
o Record Drawings
o Maintenance Records
o Hydraulic Analysis results
o Condition Assessment results (i.e., CCTV data)
• Parcel-related information including:
o Permit Records
o Rates& Fees
o Assessor parcel information
o Environmental Compliance activities such as source control program inspections
o Right-of-Way and easement documents
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Base maps available through GeoPortal include:
• Aerial imagery
• Topographic maps
• Street view
Staff can click on a map feature to display additional details, as shown in Figure 4.1, and access external
databases such as record drawings, inspections, and maintenance history via embedded hyperlinks. In
addition to panning the map to view assets or selecting the features to access linked datasets, staff can
also use the search tool by entering in a whole or partial address, parcel number, or facility ID.
Each asset has a GIS ID, which is automatically assigned by the system to ensure that each asset has a
unique identifier,and a facility ID,which is a semi-intelligent naming system that concatenates the Central
San's map grid, structure type, and structure number to create a common name for the asset that is
familiar to staff. For example, a facility ID of 75A2-M47 indicates a manhole 47 is on Central San map
quadrant 75A2.
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Figure 4.1 GIS-Additional Details for Asset
Another tool within GeoPortal allows staff to plot the coordinates, i.e., the latitude and longitude values
of the mouse position, which can be used by staff when reporting SSOs to the SWRCB.
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MAPPING CUSTOMIZATION FOR FIELD STAFF
During the replacement of the GIS software, GIS staff conferred with CSO staff and other workgroups to
develop map "themes". These "themes" can tailor the viewable layers and labels to meet the needs of
the individual work groups. In addition,feedback was solicited on symbology and labels so that the most
useful attributes were easy to view by field staff. For example,the label along a pipe displays the diameter,
material, and length of the pipe segment from structure to structure, which is valuable information for
cleaning crews.
MAP UPDATES
The collection system maps are updated when record drawings are received from Central San inspectors.
Changes are usually made within a few months of completion of the work, but the maximum update
interval goal is one year. Other datasets, such as aerial imagery, are updated as they become available.
Any staff can submit map updates via a common e-mail address that is monitored by the GIS group.
Field staff can also submit map update requests through the computerized maintenance management
system (CMMS).Work Order templates include a required field where field staff must select yes or no for
"GIS Update".An inbox for these submissions is monitored by GIS staff who then update GIS accordingly.
The GIS software maintains an audit log with the date,time, and staff's name.
WDR ITEM B:
ROUTINE OPERATION AND MAINTENANCE PROGRAM
OVERVIEW
APPROACH
Central San has a proactive approach to preventive maintenance. All lines that are 18 inches in diameter
or less are on cleaning schedules ranging from 1 to 84-month intervals. The maintenance schedules are
predicated based on the lines' history, results of TV inspection,and proximity to environmentally sensitive
areas, as well as other factors.
Areas with a history of overflows and other issues (or"hotspots") are assigned a more frequent cleaning
schedule to prevent SSOs. Central San's definition of hotspots are lines that are maintained on a 1, 2, or
3-month cleaning frequency. Central San's approach to the cleaning and maintenance of sewer lines can
be collectively described as "quality cleaning".
COLLECTION SYSTEM OPERATIONS DESCRIPTION
Central San's service area is approximately 145-square miles with a population of over 484,200. The
collection system is over 1,500 miles of pipe in sizes from 4-to 102-inch diameter with approximately 15%
located in hilly areas and 30%in easements, many of which are adjacent to creeks.Over 50%of the system
is vitrified clay or asbestos cement pipe.
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CSO is responsible for cleaning, maintenance, repair, locating, and CCTV inspection of the underground
pipelines that make up Central San's sewer system,along with the emergency response. In 2021,over 753
miles of sewer were cleaned by an average daily number of seven crews on rodding trucks and six crews
on hydro-vacuum trucks.
Maintaining this system is an ongoing process involving approximately 45 field employees. A designated
crew is assigned weekly to be the on-call crew for any after-hours emergencies.This on-call team can also
call in additional staff to help with emergencies.
Central San also manages the operation and maintenance of 18 pumping stations that are located
throughout its service area. A dedicated team of seven, not including the Plant Maintenance Division
Manager, employees operate and maintain these critical facilities. In addition to the daily inspections of
each pumping station,staff can remotely monitor the status of each station and receive automated alerts.
A designated team is assigned every week to be the on-call crew for any after-hours emergencies. This
on-call team can also call in additional staff to help with emergencies.
METRICS
Table 4.1 Select Metrics for Operations and Maintenance Activities
2017 2018 2019 2020 2021
Total Length of Pipes Cleaned (miles) 759 796 797 761 753
Total Length of Pipes CCTV'd (miles) 167 188 186 130 120
Total Number of Spot Repairs 70 65 47 45 64
Total Number of Structure Adjustments 60 103 195 105 194
QA/QC Pass Rate 89% 92% 98% 96% 95%
COLLECTION SYSTEM PREVENTIVE MAINTENANCE PROGRAM
OVERVIEW
The CSO Preventive Maintenance Program involves cleaning sewers on a recurring schedule and regularly
inspecting the sewers using CCTV. Depending on the pipe's physical condition, sewers are assigned a
cleaning frequency from 1 to 84 months, and the appropriate equipment is assigned to clean the line.
Each month work orders are assigned to maintenance crews who complete the scheduled cleaning of
pipes.The tools used and cleaning results are recorded by the crews and reviewed in the office. Cleaning
frequencies are adjusted as needed to prevent overflows.
Concurrent with that cleaning activity, other sewers are inspected internally using CCTV. If the inspection
reveals the sewer needs cleaning, a work order is created for the unscheduled cleaning. From July 2020
to June 2021, 11 work orders were initiated by the CCTV program.This process has been instrumental in
our continued reduction of SSOs. CSO uses CMMS to schedule cleaning, record cleaning results and CCTV
data,and create work orders for scheduled and unscheduled maintenance.Of Central San's approximately
1,500 miles of sewers, 1,425 miles are on a cleaning schedule. The remaining pipes are the larger trunk
sewers, and they are cleaned on an as-needed basis.
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Table 4.2 shown below provides the monthly cleaning frequencies and the linear footage of sewer lines
associated with those frequencies.
Table 4.2 Cleaning Frequency Schedule
1 Month 19,882
2 Month 16,934
3 Month 93,391
6 Month 612,796
12 Month 902,360
24 Month 616,071
36 Month 967,686
48 Month 26,418
72 Month 90,794
84 Month 4,179,222
Total* 7,525,554
* Does not include force mains or lines over 18" because these
lines do not get cleaned by CSO.
In some sewers,the defect is not in the pipe, but roots infiltrating via the manhole. In those cases, limiting
cleaning activity to removing roots in the manhole is more efficient than using cleaning equipment
through an entire sewer line. Focusing on manholes with root infiltration has saved Central San
considerable man-hours as most of the manholes with root infiltration are in easements requiring two
crews to clean the line.There are currently 1,198 manholes on a cleaning schedule.
CREEK CROSSINGS
Another preventive maintenance activity that CSO crews perform is regular inspections of sewers
crossing creeks. Crews complete an inspection form within the CMMS, attach photos of the sewer
and appurtenant supports, and look for obvious defects. If there are any significant changes since the
last inspection, the Engineering and Technical Services Department is notified to complete a detailed
survey and correct any problems. CSO has identified 154 locations where sewers cross creeks. This
proactive approach finds potential problems in environmentally sensitive areas and documents
conditions for the Asset Management Program.
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GRAVITY PIPES
Central San's assets have an average age of approximately 37 years, with some facilities approaching 100
years. Keeping all these components in working order requires a methodical approach of condition
assessment, cleaning, maintenance, repair, renovation, and planning.
Central San uses video inspection and feedback from cleaning crews to evaluate the condition of its
1,500-mile network. Data analysis is conducted by planning engineers and used to develop the Capital
Improvement Plan (CIP) and the Capital Improvement Budget (CIB).
Central San cleans 4- to 18-inch sewers in the collection system and employs two types of cleaning
methodologies: mechanical "rodders" (pictured in Figure 4.3), and high pressure "hydroflush" (pictured
in Figure 4.4). Rodders are effective in the removal of roots. Hydroflush is used mainly in the removal of
grease and debris but can be used to remove roots as well. Cleaning crews are given a monthly schedule
of locations to service and carry out the cleaning work with rodders or hydroflush equipment
appropriately.
Central San does not have a Chemical Root Control Program, nor does it use any type of chemicals in its
cleaning activities. As indicated above, Central San utilizes mechanical methods to clean and maintain its
sewer system. Mechanical methods are achieved by using a Rodder Truck (pictured in Figure 4.2) or a
Hydro Truck (pictured in Figure 4.3). If in the future, Central San decides to institute a Chemical Root
Control Program,the SSMP will be revised to include several constraints such as: chemicals must be used
in a safe and effective manner, chemicals must be approved and/or recommended by the EPA or the
RWQCB, chemicals shall have a half-life of 60 days, chemicals shall be used in accordance with the
manufacturers recommendations, and monitoring of plant life in the vicinity of where chemicals were
applied shall be discussed.
Figure 4.2 Central San Rodder Truck
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Figure 4.3 Central San Hydroflush Truck
Central San's goal is to clean or inspect all lines every 84 months. Different cleaning tools are evaluated,
and the most effective tools for various situations are identified. An overview of the cleaning frequency
decision process is shown in Figure 4.4.
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Page 4• of •
PIPE MAINTENANCE SCHEDULE FLOWCHART
70. mY
Na maintenance schedule is the pipe new?
far pipes larger
than i 8"diameter
ND fS
Dves the pipe have a Assign the pipe tv a
history of issues? maintenance schedule
{plug calls,Dverflflws, {84 months)and CCTV
high CCTV Score?) within 120 months
Nd YE5
Assign the pipe to a maintenance Are the issues
schedule{84 months)and CCFV structural?
within T 2�months
Are the issues Roots, •Monitor with CCTV until repair advised
Grease a�Tdlor Debris? •RepairlReplacethraugh Engineering Dept.
•Preventative Maintenance as necessary
THROUGHOUT MAN HOLESOTJLY
Assign frequent Preventative Add manholes to
Maintenance based on severity structure survey list to IQe
{heavy,medium or iightJ inspected every T 2 or 24
T,2,3,5,T2,24 or 36 months months
Figure 4.4 Cleaning Frequency •
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FORCE MAINS
Central San has approximately 25 miles of pressurized sewer pipes, which are commonly referred to as
force mains. Force mains are scoured daily with high velocity flow, and occasionally the slime layer (a
precursor to hydrogen sulfide corrosion) is removed with a shock treatment of sodium hydroxide or other
chemical. This treatment is performed throughout the year, but more frequently in the summer as
conditions warrant.
PUMPING STATIONS
The Pumping Stations Operations staff are the primary personnel responsible for the day-to-day operation
and maintenance of the Pumping Stations, 24 hours a day, 365 days a year. This includes daily, weekly,
monthly, bi-annual, and annual inspection and testing of equipment and systems. Tasks include items
such as:
• Monitoring the Pumping Stations SCADA system and response to alarms or operational issues
requiring correction
• Continually testing generators and alarms throughout the year
• Testing portable equipment once a year and routine training exercises for staff to hook up
emergency portable equipment in case normal procedures fail
• Exercising all station valves once per month
• Annual servicing of all generators
• Annual servicing of transfer switches to ensure a smooth transition from PG&E to emergency
power
• Watching the weather reports and staffing appropriately when needed
• Ensuring that sandbags are filled and ready to go in case of emergencies during wet weather
• Ensuring that all generators and portable fuel tanks are full and ready to go
Additional support with the maintenance and repair of the pumping stations equipment and systems is
provided by the Plant Maintenance Division. This comprises staff from Reliability Engineering, Electrical,
Mechanical, Controls, IT, and Instrumentation shops. Services contractors also assist with regular
maintenance and emergency repairs of the pumping stations,such as annual generator testing.Staff from
Pumping Stations, Electrical, Instrumentation, and Mechanical shops are on standby 24/7 to assist with
any urgent or emergency situations that require immediate response outside normal business hours.
Some of the metrics used to measure the Maintenance programs success include Key Performance
Indicators (KPI) such as:
• Preventative Maintenance (PM) completed to planned—target 95%completion
• Safety Work Orders completed to planned—100%completion
Within Central San's Maintenance program,there are various maintenance categories.The maintenance
categories are shown in Figure 4.5.
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------i r------i
Unplanned j Planned j
RM PM PDM
Reactive Preventative Predictive
Maintenance Maintenance Maintenance
CMNM impravementJ
Corrective Non- oPbmization�
Modification
Maintenance Maintenance
Figure 4.5 Central San Maintenance Categories
RELIABILITY-CENTERED MAINTENANCE
Central San has commenced the implementation of a Reliability-Centered Maintenance (RCM) program
to further optimize the existing maintenance program for non-pipeline assets, such as mechanical,
electrical, and electronic equipment found at Pumping Stations and the Treatment Plant.
The RCM program systematically focuses on asset criticality and consequence of failure, and is a
qualitative decision methodology that identifies the most effective PM task for equipment and systems.
Together with CMMS, it establishes a repeatable program with documented processes and procedures.
The benefit of RCM is having a specific maintenance strategy for each facility asset,optimizing productivity
and labor resources.
The four principals of RCM are:
• Preserve system function
• Identify failure modes that can affect system function
• Prioritize failure modes
• Selection of effective tasks to control failure modes
CLOSED CIRCUIT TELEVISION
Central San has a comprehensive CCTV inspection program for its collection system. The plan is that all
sewer lines will be inspected by video; manholes and other structures will be visually inspected as part of
the process.Central San uses internal crews and contractors selected by a competitive bid process to carry
out this work. Virtually the entire collection system will be inspected every 10 years. Video inspection
results are analyzed;sewer pipes needing immediate attention and modified cleaning activities/schedules
and future sewer replacement are identified.
Sewers identified for replacement are evaluated for other significant factors—maintenance accessibility,
sewer capacity, sewer stoppage history, and utility/road surface renovation coordination. Pipe segments
are then prioritized and organized into projects by geographic area.
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The inspection schedules run from once every 10 years for pipes in excellent condition to much more
frequently for pipes in poor condition.The condition of the pipe is assessed using a numerical system that
sum scores for each televised defect for that pipe segment.
The CCTV inspection is proof positive of existing pipe deficiencies. CSO uses CCTV information to
determine the most efficient cleaning frequency. By adjusting the preventive maintenance frequency,
CSO can direct cleaning crews to pipelines in most need of cleaning. CCTV inspection has also prevented
several overflows by finding partially blocked sewers, allowing crews to clean the pipe before it becomes
completely plugged.
The video is recorded in digital format and the report and pictures of defects are accessible through
GeoPortal.All data is archived and organized in a database for access.
In addition to the work performed by the contractor, Central San owns three trucks equipped for video
inspection that are used to inspect new installations and repairs, quality assurance and quality control,
and to provide assistance to cleaning crews. Two of the trucks are used for daily CCTV inspections, and
the third truck is the Perma-Liner Spot Repair Van.
CSO provides CCTV and maintenance data of sewers to the Engineering and Technical Services
Department to assist in determining which sewer lines are selected for renovation or replacement each
year. CSO supervisors meet with Central San Engineers monthly to review and prioritize collection system
sewer repairs to be included in capital projects. During a project's design phase,CSO staff review the plans
and provide comments to the engineers for inclusion into the final contract documents prior to bidding.
During Fiscal Year (FY) 2016-17, Central San replaced its CCTV software systems with IT Pipes®, which
integrates with both the ESRI® GIS and Cityworks® CMMS. During this implementation, legacy data from
previous CCTV software systems were migrated into IT Pipes®. The new system has a viewer plug-in that
allows easy access through GeoPortal for all staff to access the CCTV data including the report, pictures of
defects, and video.
PRIVATE SEWER LATERALS
In Central San's service area, the property owner is responsible for the entire sewer lateral pipe coming
from the owner's structure, to where it connects to the public sewer. As a courtesy to its customers, if
while televising a main line it is discovered that a lateral needs cleaning, Central San staff will notify the
homeowner. A picture of their lateral, a letter explaining the situation, and a request that Central San be
informed when the cleaning is completed is mailed to the homeowner.After the homeowner finalizes the
cleaning,the main line is re-checked.
QUALITY ASSURANCE AND CONTROL PROGRAM
During the past fiscal year, Central San televised 590 lines for its Quality Assurance and Quality
Control (QA/QC) Program. There are, on average, 49 lines per month that are chose by the
Maintenance Planner to be cleaned, and then televised to verify results. Lines are selected based
on the cleaning frequency, the results of the last cleaning, and the date that the line was last
televised. Of these 49 lines, an average of 27 are for the Rodding Section with a history of roots,
and an average of 22 are for the Hydroflush Section that have had a history of grease or deposits.
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The Maintenance Planner reviews the lines that have completed cleaning in the past 3 calendar
days, reviews their history, cleaning results, and selects lines to be CCTV'd for QA/QC. These
selected lines are noted on the QA/QC spreadsheet and work orders are created in Cityworks®for
CCTV. Once televised, the results and the video are then shared with the Crew Leader who cleaned
that particular line segment. Of the 590 lines that were a part of the QA/QC program, 25 failed and
had to be re-cleaned. This amounts to a 96% pass rate.
ODOR CONTROL
Central San has a hotline for the public to report any foul odor locations. Staff investigates each report
and takes the appropriate actions to eliminate the odor source.The hotline number is (925) 335-7703
and is posted on Central San's website under the "Contact Us" link.
Central San employees respond to odor complaints with a visit to the site and an interview with the
customer. Methods used to deal with odors include carbon/permanganate air scrubber systems, pumping
stations operation changes,and chemicals added to the force mains such as nitrate solutions,air injection,
caustic soda, or hydrogen peroxide.
CORROSION CONTROL
Central San's Corrosion Control Program focuses mainly on the metal piping network, pumping
stations, and the treatment plant facilities. The cathodic protection for metal pipes in the collection
system is primarily sacrificial anodes. While at the pumping stations and some force mains, an
impressed current cathodic protection system is used. Pumping Stations Operators perform monthly
rectifier readings, and the Engineering and Technical Services Department maintains an Access
database inventory of cathodic protection locations and components, as well as annual survey and
evaluation data such as pipe-to-soil potentials.
CATHODIC PROTECTION SYSTEM
Cathodic protection is a technique used to control the corrosion of metal. Several Central San facilities
and systems (Treatment Plant, Collection Systems, and Recycled Water) require continuous cathodic
protection. Central San has a program to survey the existing cathodic protection systems, identify
deficiencies, and provide recommendations for required maintenance, replacement, and/or addition of
new cathodic protection for facilities requiring such protection.
HYDROGEN SULFIDE PROTECTION
A natural microbiological process that occurs in sewers leads to the creation of hydrogen sulfide.
Corrosion due to the presence of hydrogen sulfide may arise from the biological conversion of hydrogen
sulfide gas to sulfuric acid in the presence of moisture.This mechanism can cause corrosion of sewers and
associated infrastructure.
To reduce the presence of hydrogen sulfide, Central San uses air injection and chemical additives to
prolong the life of the collection system. These preventive methods are significantly less expensive than
the alternative of having Capital Projects replace the structural deficiencies caused by corrosion. Central
San uses specialized instruments to monitor hydrogen sulfide levels in the collection system throughout
the year.
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REMOTE AREA INSPECTION
Another inspection program focuses on Central San assets that are easements, often residential
backyards, and are not readily accessible by vehicle. Central San employees walk the pipelines, inspect for
damage along the pipelines and inspect inside manholes to verify proper flow conditions as well as for
root growth. Inspectors look for tell-tale signs of leaks such as heavy vegetation growth during the dry
summer season, and inconsistent flow between manholes. This program was initiated in 2005 and has
been successful in detecting areas in need of maintenance.
PIPE SPOT REPAIRS
Central San has its own construction crews that make urgent repairs to the sewer system.CSO construction
crews use Perma-Liner cured-in-place technology when making spot repairs to sewers ranging from 6-to
10-inches. CSO crews utilize this spot repair method on an average of three times per month. Central San
pioneered the use of pipe bursting, directional drilling, micro tunneling, and other trenchless technologies
in the late 1980s and 1990s. Central San's Engineering and Technical Services Department regularly uses
trenchless technologies as part of their ongoing sewer renovation and replacement program. Large-scale
pipe repairs are typically included in capital projects due to the scale of resources that are needed.
CSO Supervisors meet with Central San Engineers monthly to review and prioritize urgent sewer repairs to
be included in capital projects. In addition, project location maps are posted for cleaning crews to provide
comments to the engineers regarding sewer cleaning access issues. Before Central San collection systems
projects go out to bid, CSO staff reviews the plans and provide comments to the engineer for inclusion in
the final contract documents.
REMOTE MANHOLE LEVEL MONITORING
Central San has a network of remote manhole level monitors that alerts CSO staff to rising wastewater
levels within the monitored manholes.When wastewater within manholes rises above the top of the sewer
pipe, it indicates surcharging conditions. In such scenarios, CSO staff receive an automated alert that
identifies the associated manhole. This early warning provides staff the ability to quickly respond to the
situation and alleviate any associated pipe blockage before a SSO occurs. Refer to Figure 4.6 for a basic
overview of the system.
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Page 52 of 163
1 2
I
Mission floats 3
are installed in
problem areas
should there be
any sudden or
unexpected rise
in wastewater
levels.
Figure 4.6 Representation of Remote Level Monitoring System in Alarm Mode
COMPUTERIZED MAINTENANCE MANAGEMENT SYSTEM
Central San uses a new GIS-centric software platform (Cityworks®) for CMMS. The new platform
consolidates all assets into a single system to manage Central San's Preventive Maintenance Program.
Central San field crews use mobile devices to remotely access the system.
The CMMS manages Service Requests, Work Orders, and Inspections. The new system has a simple
graphical user interface where staff (depending on security and permissions) can view, edit, or update
work activities; search for assets in a table or map view; or run reports. Legacy data from the obsolete
system was migrated into the new system for the past 10 years of work activities and linked to the asset
in the new system for easy retrieval by staff.
The new system includes a dashboard that staff can customize with inboxes and charts specific to the
staff, supervisor, workgroup, management, or combination thereof. Staff can also save searches to the
map to show Service Requests or Work Order locations by status, time period, staff, etc. Refer to Figure
4.7.
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Page 53 of 163
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Figure 4.7 CMMS-Work Order with Asset Mapped
The new system also allows documents, pictures, or other files to be attached to the Work Order. For
example, a cleaning crew may discover a repair is needed to a manhole and can attach a photo to the
repair Work Order.
Additionally, Standard Operating Procedures (SOPS) are attached to Work Order Templates, so they are
easily accessible to field staff.
The"Overflow Response"Work Order Template was configured to include custom fields to document the
information needed for reporting to CIWQS.
Within the new CMMS system, comments made on Work Orders or Service Requests are stamped with
the user's name, date, and time to easily pass information along to subsequent staff or supervisors
regarding the work activity.
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WDR ITEM C:
REHABILITATION AND REPLACEMENT PROGRAM
BUDGET
OVERVIEW
Central San operates under a fiscal year budget cycle beginning July 1 and ending June 30. By law, Central
San uses an enterprise fund to account for its operations. Central San currently has one enterprise fund
which is comprised of four internal sub-funds:
• O&M Running Expense Fund
• Sewer Construction Fund (Capital Fund)
• Self-Insurance Fund
• Debt Service Fund
The revenue sources to support this budget include the following:
• Residential Sewer Service Charges
• Commercial Sewer Service Charges
• Sewer Connection Fees (Capacity Fee and Pump Zone Fee)
• City of Concord (contract to treat wastewater)
• Ad Valorem Property Taxes
• Other Reimbursements (i.e., proceeds from the sale of recycled water and permit fees)
The budget incorporates Central San's Strategic Goals and Initiatives and provides the resources necessary
to advance the Strategic Plan and meet the challenges Central San faces as it strives to increase service
quality and minimize cost to its customers.At the same time,the budget allows Central San to accomplish
its mission in the most cost-effective and financially sustainable manner to ensure best value to our
customers.
Central San's Board of Directors authorizes the budget for the organization. Central San staff leverage
technology, equipment, and professional expertise to optimize the use of the authorized budget, to best
address collection system infrastructure needs.
Refer to centralsan.org for the most current budget information.
COLLECTION SYSTEM OPERATIONS AND MAINTENANCE BUDGET
Fiscal Year 2021-22
For FY 2021-22, Central San's budget for Collection Systems Operations and Maintenance is$15 million.
COLLECTION SYSTEM RENOVATION AND REPLACEMENT BUDGET
Fiscal Year 2022-23
For FY 2022-23, Central San's Collection System CIB is$37 million.
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Renovation and Replacement Budget 10 Year Estimate
In 2016, Central San renovated or replaced over eight miles of 6- to 10-inch sewers in streets and
easements throughout the service area.
In 2017, Central San completed its Comprehensive Wastewater Master Plan (CWMP). The CWMP
investigated Central San's Collection System and Treatment Plant as an integral system and provided
guidance for making decisions to ensure the infrastructure is maintained appropriately into the future. In
alignment with the CWMP recommendations, Central San is preparing to increase the total length of pipe
replaced per year,for the foreseeable future.
Figure 4.8 provides a summary of the 10-year estimated fiscal year capital budget for Collection System
Rehabilitation and Replacement (R&R), as of May 2017. These estimates will be updated every year to
ensure Central San is responsive to the changing needs of the infrastructure.
Figure 4.9 provides a summary of the 100-year estimated expenditures for the Collection System R&R, as
of May 2017.These estimates will be updated periodically to ensure Central San is responsive to the long-
term needs of the infrastructure.
Estimated Fiscal Year Capital Budget
50
45
40
0 35
30
25
20
15
m
10
5
0
FY 2017- FY 2018- FY 2019- FY 2020- FY 2021- FY 2022- FY 2023- FY 2024- FY 2025- FY 2026-
18 19 20 21 22 23 24 25 26 27
Fiscal Year
Figure 4.8 Ten-Year Estimated Expenditure—Collection System Replacement and Rehabilitation
Forecasting and prioritizing replacement needs is an iterative process. Refer to Figure 4.9 for the draft
renovation forecast.
Period Cost($M) Mileage
5-10 Years $180 43
10-20 Years $441 184
2 0-3 0 Years $724 281
3 0-5 0 Years $1,156 403
50-75 Years $575 20
75-100 Years $808 276 4-19
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s0,o00,000
70,000,000
60,000,000
c s0,000,000
u
40,000,000 .0 011000MENEEN MEN.—
Q
�j 30,000,000
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10,000,000 IIII
N r-i 1— O M Lo m N N oo 14 V 1` O m ID n N un co e-1 � r O M ID M N ul oo 14 IQ, �
r 1 N N N M m m m � � � Ln Ln u1 (D (D (D �D 1` oo oo N m m GI G1 O O O ei e-1 e-1
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N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N
Forecast Year
Figure 4.9 CWMP Draft 100-Year Sewer Renovation Forecast
Please refer to centralsan.org for the most current budget information.
RISK-BASED PLANNING
Central San uses a risk-based analysis to develop its 10-year plan for sewer R&R projects.To assist in this
task, Central San uses a risk-based asset management software that leverages existing GIS and CMMS
data, hydraulic model output data from Central San's hydrodynamic model using Innovyze's InfoWorks®
software, and CCTV and sewer cleaning data to optimize the capital improvement strategy for replacing
sewers and reducing SSOs.
Central San owns and maintains approximately 1,500 miles of collection system sewers containing over
37,000 pipe segments. Each pipe segment is analyzed by InfoMaster from a risk perspective, which
includes the likelihood of failure (LOF) of both structural and operational elements (e.g., cleaning
frequency and CCTV score), the consequence of failure (COF) based on modeled wastewater flows, and
proximity to critical features within the service area (e.g., hospitals and waterways). The risk model
facilitates a proactive approach to identifying and managing high-risk sewer pipes to help preserve
structural integrity and reduce SSOs over time. Reducing and eliminating SSOs is Central San's ultimate
level of service goal.
The data used by InfoMaster will be updated on a recurring basis to ensure that the risk model results
leverage the latest data available and reflect most pertinent LOF and COF factors. The LOF and COF are
based on feedback from collection system field crews to ensure that Central San's sewer replacement
strategy reduces SSOs over time.
This proactive approach allows Central San to:
1) Identify the most at-risk sewers for incorporation into our CIB, and
2) Project future sewer CIP sewer replacement needs so that Central San can plan ahead for an
optimal budget that addresses Central San's aging infrastructure. R&R needs are identified using
Innovyze® InfoMaster software. This software uses the COF and LOF for each pipe segment to
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determine the relative risk of the asset. R&R needs are then prioritized based on risk and are
grouped geographically into projects and incorporated into the CIP and CIB. InfoMaster places
each pipe segment into R&R bins for zero to five years,five to ten years,and beyond.Criteria used
for bin placement include:
• Risk
• LOF
• COF
• Age
• Remaining Useful Life
Likelihood of Failure Consequence of Failure
Maintenance Frequency Risk • Hydraulic Madel
CCTV Scores 0 JCalculation Infrastructure Data
Pipe Diameter • GIS Data
Remaining Useful Life • Critical Facilities
Prioritization
J
Rehabilitation Rehabilitation Rehabilitation
Cost En ine Budget
1
Capital
Improvement
Plan
Figure 4.10 Risk-Based Analysis Process
Risk is a product of LOF and COF and ranges from negligible to extreme.
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LOF is based on:
• Maintenance Frequency
• CCTV Scores
• Pipe Diameter
• Remaining Useful Life
The expected total life of pipe is based on an analysis of CCTV scores for each pipe type. The remaining
useful life is based on installation year and expected total life.
COF is based on proximity to:
• Street Types • Hospitals
• Railroads • Creeks
• BART • Diameter of pipe
• Schools • Flow in pipe
ASSET MANAGEMENT PROGRAM
OVERVIEW
Central San's initial Asset Management Program (AMP) effort began in 2002 with a condition assessment
of the gravity system through CCTV inspections,which allowed Central San to target capital improvement
projects and maintenance on the pipes in the worst conditions. Since the CCTV program began, Central
San has reduced SSOs by approximately 70%through these investments.
DevelopAsset Assess Determine •
Registry i cff
Modes41-
Fal lure Replacement •
Determine Opti i Determine Build Asset
Business Risk i&M -0. Capital Fundirkg
(Criticallity) Investment Investment Strategy Plan
Figure 4.11 Asset Management Plan Evolution
Upon successfully implementing asset management for collection system assets, Central San wanted to
expand the AMP to the wastewater treatment plant, which led to a more formal pursuit of an AMP in
2014 with a dedicated AMP coordinator, Asset Management Implementation Plan (AMIP), and adoption
of an Asset Management Board Policy. Central San's AMP evolution has followed the United States
Environmental Protection Agency's (USEPA) asset management 10-step process framework, summarized
in Figure 4.11.
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Central San employs six full-time staff in its Asset Management Group, which includes GIS administration
and technical support of the CMMS, CCTV software, and other relational software. By presenting the
business needs and benefits to customers, Central San staff have obtained the support of management
and Board members for necessary investments in the AMP.
FORCE MAINS
The most efficient method to convey wastewater to a treatment plant is by gravity,essentially sloping the
sewer pipes towards the direction of the treatment plant. However, in some areas of hilly terrain or low-
lying areas, the wastewater must be pumped for a distance, to a location in the sewer system where it
can once again flow by gravity to the treatment plant. These pressurized sewer pipes are commonly
referred to in the wastewater industry as force mains.
Central San owns approximately 25 miles of force mains and maintains an additional 2,900 linear feet of
private force mains under contract. In 2013,Central San completed a study to develop risk scores for each
of its force mains, using the COF and LOF approach. Each force main was subsequently ranked into one of
the three following categories using a Tolerable Risk Curve graph:
• Tolerable Zone—Periodic review of force main data
• Yellow Zone—Triggers periodic condition assessments
• Red Zone—Triggers rehabilitation or replacement
If the calculated risk score for a force main moves from the Tolerable Zone to the Yellow Zone, then
condition assessments are required on a periodic basis. If a force main moves into the Red Zone, it will be
included in the CIP for rehabilitation or replacement.
PUMPING STATIONS
Central San's CWMP was completed in 2017. It includes an Asset Management component that reviewed
Central San's gravity mains,force mains, and pumping stations. During this project, all of Central San's 19
(Via Robles Pumping Station was de-commissioned in 2017) pumping stations underwent a condition
assessment investigation by both specialized consultants and Central San staff. Recommendations were
prioritized and cost estimates were developed for each pumping station. A timeline for undertaking
identified capital improvements was developed and incorporated into the capital budget.
GRAVITY MAINS
The most recent development for the Collection System AMP is the expansion of its gravity main
renovation planning, from a condition-based approach (i.e., CCTV scores) to a more rigorous risk-based
approach. Innovyze's InfoMastero software calculates COF for all the gravity pipes, based on multiple
factors and uses GIS spatial analysis(i.e., proximity to schools, hospitals,waterbodies, and transportation
features such as freeways) and combines that with LOF (derived from condition assessments and
maintenance records) to prioritize renovations based on risk. This allows Central San to anticipate
renovation needs for the next 20 years and beyond, allowing the Board members and management to
determine the appropriate funding strategies and modify its renovation program to address future needs.
For more detailed information on this risk-based approach, refer to the Rehabilitation and Replacement
section above.
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LARGE DIAMETER PIPES
Following up on the CWMP recommendations, Central San will commence a condition assessment
program for its large diameter pipes in FY 2022-23 to quantify the condition of this critical infrastructure
and to optimize R&R forecasting.
WDR ITEM D:
TRAINING PROGRAM
TRAINING OVERVIEW
ORIENTATION
One of the unique challenges Central San has faced is the influx of new employees into field positions.
Central San has developed an orientation and training process designed to give them the tools,
knowledge, and safety awareness they need to be successful at CSO. Central San developed an in-house,
CWEA award-winning video that gives an overview of the tools used in rodding and hydro work which
shows the functionality of each tool.
Central San has also developed an orientation program that covers the basic administrative issues,
behavior guidelines, and general safety policies that new employees need to be aware of prior to working
in the field. The CSO Employee Training Matrix, which outlines required safety training for each job
classification,works in conjunction with Central San's Training Database to track the employees' progress
as they complete various training modules.
In addition, exposure to wastewater presents its own set of safety challenges due to the likelihood of
exposure to disease causing pathogens or other potentially infectious materials. Central San's Safety
Directive 6 — Exposure Control Plan for Bloodborne and Infectious Pathogens outline the policy and
procedures used to keep staff and members of the public safe. This safety directive mandates annual
Bloodborne Pathogen training be performed for all collection system staff and that adequate personal
protection equipment is available to staff. If there is any reasonable risk that the public may come into
contact with sewage, Central San will post and maintain appropriate notification signs and place
barricades and/or other traffic control devices to keep vehicle and pedestrian traffic away from contact
with sewage.
SSMP TRAINING
CSO staff are trained annually on the Elements and procedures within the SSMP, including the SSOBRP.
Training consists of theory and practical exercises. A Training Log is kept for all formal training. Informal
training also takes place amongst CSO staff in the form of workgroup meetings and mentoring of new staff
by experienced personnel.
COMPENTENCY PROGRAM—YELLOW BOOK
Shortly after being hired, each new crew member is given a CSO-tailored training log called the "Yellow
Book" because it is traditionally bound in a yellow cover. Over the years,the contents of the Yellow Book
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have been refined and updated as training needs change, perfecting the task checklists for each of the
different CSO sections — Rodding, Hydro, Construction, and CCTV/Locating. As the new crew member
becomes proficient in various skills, the crew leader signs and dates the book to verify that they have
observed the crew member in action and can move on to learning the next assignment. It takes
approximately 18 months,the usual probationary period,for each crew member to complete their Yellow
Book. During the 18-month training period,the supervisors work closely with the new employees as they
rotate through the various sections.
CWEA TECHNICAL CERTIFICATION
During their initial probation period, the crew members are also required to pass the CWEA Technical
Certification Program (TCP) Grade I examination and to obtain a Class A driver's license. We provide
training in-house to assist them in both these efforts as well as pay for and send them to CWEA TCP
preparation classes. Our driver training class for new employees is based on the Teamsters' model, and
our "students" have a 100%success rate in taking and passing the California Commercial Driver test.
Central San's training program consists of both introductory and continuing education on the topics of
health,safety,and O&M activities.Training is customized to serve different needs of Central San's workers
and is provided by both Central San staff and consultants. The training program has the following basic
structure.
• New Employee and Contractor Orientation
• Refresher Training Programs
• Special Training Sessions
• Tailgate Training Sessions
• Emergency Response Training
• Emergency Operations Center Training
• Training Records
EMPLOYEE AND CONTRACTOR ORIENTATION
Employees and contractors who work on Central San projects receive training on safety topics to provide
orientation, information on safe work practices, and background on Central San's Safety Program. The
following outline lists the course subjects. Appropriate items from the outline are selected for the
orientation based on the job requirements:
• District Safety Policy& Responsibilities
• New Employee Plant Orientation
• Unique Hazards
• Methane & Hydrogen Sulfide
• General Safe Work Practices
• Personal Protective Equipment
• Respirators
• Hard Hats
• Eye& Face Protection
• Safety Shoes
• Hearing& Body Protection
• Emergency Evacuation Procedure
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• Fire Evacuation
• Safety Directives and Safety Directive Quiz
• Accident Prevention and First Aid
• Hazard Communication Standard (Hazardous Materials/Material Safety Data Sheets)
• District Smoking Policies
• Vehicle Safe Driving Practices
• Confined Space Training and Rescue Exercise
• Traffic Control
TRAINING TOPICS
MANDATORY TRAINING TOPICS
CSO staff have the following mandatory training schedule:
• SSMP Training • Volume Estimation and Start Time
• Excavation/Competent Person Training
• Traffic Control/Flagger Training • Waste Discharge Requirement Training
• SCBA/Confined Space Training • Monitoring and Reporting Program
• Driver Commentary Training Training
• SSOBRP • Bloodborne and Infectious Pathogen
Training
SPECIAL TRAINING TOPICS
Special topics are presented to employees on an as needed basis. An employee's supervisor or Central
San Safety and Risk Management team may determine what type and amount of training may be
appropriate for an individual employee based on their work tasks, previous training, and projected work
tasks.These topics vary each year but are represented by the following list:
• Respirator Care and Use
• Hazard Communication
• Ladder Safety
• Electrical Safety
• Forklift/Heavy Equipment
• Ergonomics
• Cranes and Rigging
• Emergency Preparedness Drill
• Personal Protective Equipment
• Fire Drill
• Fire Extinguisher Safety
• Heat Illness Prevention
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TRAINING SESSIONS
REFRESHER TRAINING
Central San employees receive periodic refresher training such as respiratory protection training,
emergency response/evacuation training, and others as necessary. Refresher sessions are provided on
topics when new materials or processes are added to the workplace, or when new regulatory
requirements or new hazards are identified. Ongoing refresher training is an essential element of Central
San's training program.
TAILGATE TRAINING SESSIONS
Tailgate training sessions are provided at plant, pumping stations, and remote jobsite locations when
preparing crews for specific jobs and are a part of the ongoing safety training program.These sessions are
logged and documented in the field. A representative list of these training sessions is included below:
• Confined Space Hazards
• Materials Handling Safety
• Hydrogen Sulfide Control
• Storage and Use of Chemicals
• Occupational Safety and Health Administration (OSHA)Asbestos Standard
• Permissible Exposure Limits
• Exposure to Hazardous Materials
• Material Safety Data Sheets
EMERGENCY RESPONSE TRAINING
Central San maintains an ongoing emergency response training program to
ensure both field operations staff and management can respond to local
and regional disasters. The program focuses on California's Standardized
Emergency Management System (SEMS) and National Incident
Management System (NIMS) compliance, coordination with other
agencies, interoperable communications, and proper documentation.
NATIONAL INCIDENT Training activities include practical exercises and training within the
MANAGEMENT SYSTEM Operations Department (Treatment Plant and Collection System), damage
assessment team exercises and training, emergency communications
protocols and training on how to use various communications tools, joint
Homeland or shared training with other agencies in the area,and training on Common
Security Operating Picture systems.
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TRAINING RECORDS
Central San training records are kept on file for each employee. Additionally, a training database is
maintained for reviewing employee qualifications and adding or modifying training requirements for
individual employees.
CONTRACTOR AND PLUMBER OUTREACH
Central San's outreach program consists of jobsite interaction between inspectors and contractors, and
outreach materials sent by mail. Contractors and plumbers who live in areas served by Central San receive
The Pipeline, a newsletter sent to all customers. Every issue provides valuable information on how
customers can make the operations of Central San run more smoothly.
Contractors and plumbers who work in Central San's service area must register with Central San. This
registration list is used to send mailings to them whenever the Standards and Specifications or Central
San Code are changed, or there is a need to notify them of some other revision or concern.Through these
methods of contact,Central San keeps contractors and plumbers up to date on current Best Management
Practices (BMP).
Central San has identified building demolition as a potential source of SSOs because the contractors may
not cap the cleanout of the sewer lateral during the demolition and foreign material entering there may
then cause a blockage. Central San is establishing communications with city and county building
departments to confirm their awareness of the importance of these caps and to make sure that the
potential for these overflows is minimized.
Refer to Element 11 for further information on Central San's outreach activities.
WDR ITEM E:
EQUIPMENT AND REPLACEMENT PART INVENTORIES
EMERGENCY EQUIPMENT
CSO maintains several emergency response vehicles as well as Hydrovac Combination trucks, Rodding
trucks, and CCTV trucks. Collection system maintenance equipment and emergency equipment are in the
Walnut Creek location, which is centrally located in Central San's service area to provide an efficient
emergency response.
When an emergency call is received during normal working hours, the closest crew is dispatched to the
emergency location and a maintenance supervisor is informed of the specifics of the emergency. During
non-working hours, there is always a crew on stand-by ready to receive the call. Crew members are
assigned on-call vehicles and tablets.
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The on-call vehicles are pickup trucks that are equipped with the necessary equipment to perform routine
sewer maintenance and investigations. If the situation causes a need for a Hydrovac or Rodding truck,one
crew member will pick up the piece of equipment in Walnut Creek while the other crew member drives
directly to the site. The iPad contains systems maps, as-built drawings, maintenance history, and CCTV
inspection data which may be used for determining the cause of the overflow or stoppage.
If it is determined that additional crews or equipment is needed the crew member relays this information
to his supervisor and additional crews are dispatched to the emergency. The additional crews are
instructed to transport any additional equipment to the overflow site as needed. Equipment consists of:
• Vactor Combination Trucks • Confined Space Van
• Vactor Jetter Trucks • 6" Gorman Rupp Portable Pump
• Champion Rodding Trucks • Bypass Pipe Trailer
• CUES CCTV Trucks • Laboratory Water Sampling Kit and
• Bypass Pump Van Chain of Custody Forms
A complete list of equipment that can be used for emergencies is in Appendix B —Available Equipment
Inventory.
The purpose of these emergency vehicles and equipment is to quickly restore flow and repair the damage
in the pipe. The Sewer Overflow and Backup Response Plan and the Pumping Station Overflow Response
Plan describe how to use these vehicles to react to an overflow event. Because system problems range
from simple plugs to complex failures of pipes or pumping equipment, not all the vehicles are used in
every situation.
CSO maintains a warehouse of material for repairs at its location in Walnut Creek. In addition, each
pumping station maintains an inventory of spare parts such as belts,hoses,and other critical components.
Whenever possible, pumps and other equipment are standardized to optimize emergency response
efficiency.
Central San's confined space vehicle (Figure 4.12) carries all the necessary equipment to safely enter the
sewer system, including tripods and retrieval equipment. CSO staff are trained for confined space entry
and rescue.
g
4'rr
Figure 4.12 Confined Space Van
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Central San's emergency pump vehicle (Figure 4.13) carries various pumps ranging from two to four
inches, as well as intake and discharge hoses, and Victaulic couplings. This equipment can be used to
bypass failed pumping stations or areas of the collection system that are blocked and cannot be quickly
cleared.
- I
® ilki _-
ssas3 �
Figure 4.13 Emergency Pump Truck
Central San's construction vehicle(Figure 4.14)carries tools,equipment,and parts needed for spot repairs
and other construction emergencies. Central San also has two backhoe excavators and dump trucks in its
inventory for repair work.
■
■
■
Figure 4.14 Construction Vehicle
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Central San's emergency response pipe trailer (Figure 4.15) carries 20-foot sections of 6-inch aluminum
pipe for emergencies.The trailer also carries street crossing equipment and flexible intake and discharge
hose.
OF
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Figure 4.15 Emergency Response Pipe Trailer
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Figure 4.16 CCTV Van
Central San's large pumping stations have emergency equipment on site ready to go, such as emergency
bypass pumps(Figure 4.17).Other trailer-mounted equipment is kept ready to go at the Pumping Stations'
Corporation Yard at the Martinez campus.
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Iy= =iw'e'�'=
-x —
r`•
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Figure 4.17 Portable Emergency Bypass Pump at Martinez Pumping Station
Central San currently owns two trailer-mounted Cornell pumps and two trailer-mounted Gorman-Rupp
pumps (Figure 4.18) for bypass pumping.
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Figure 4.18 Gorman-Rupp Bypass Pump at CSO
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PARTS INVENTORY
The Materials Services Group, located in Martinez, maintains the replacement part inventory for assets and
equipment, except for vehicles, which is maintained in the financial system (Oracle).The Materials Services
Group purchases replacement and spare parts and tracks discrete items in its inventory. Spare parts are
stored in a 6,000 square-foot warehouse at the treatment plant in Martinez,the CSO warehouse in Walnut
Creek, and locally at pumping stations. Operations staff collaborate with the Material Services Group to
adequately stock spare parts and identify both the maximum on-hand as well as the minimum reorder
points.
Spare parts kept at the CSO warehouse include the items listed in Table 4.2 below. In addition,Central San's
Vehicle and Equipment Shop, located at CSO in Walnut Creek, performs maintenance on 108 vehicles and
other CSO equipment,which range from backhoes to small generators,and maintains their warehouse with
spare parts.
Table 4.3 CSO Warehouse Spares
ToolingVehicle Type
Vactor Combination and Jetter Trucks Reel hose, guide hose,various spare nozzles, and
guide hose splicing machine
Champion Rodder Trucks Continuous rod and various cutting blades
CCTV Trucks Redundancy provided with (3) CCTV Trucks
Construction Pneumatic plugs sizes 4"—36"
Couplings for various materials sizes 6"—18"
Various materials of pipe sizes 6"—18"
Speed shores
Mini-cams
Perma-liner repair kits
Grade rings
Castings
Covers
Quick set AC patch
W Class II Aggregate Base
%" Crushed rock
Various traffic signage
Generators
Light towers
Trash pumps
A complete list of parts that can be used in emergencies is located in Appendix C—Available Parts
Inventory.
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SSMP ELEMENT 5:
DESIGN AND PERFORMANCE "PROVISIONS
WDR REQUISITES
D.13. (v)Design and Performance Provisions:
(a) Design and construction standards and specifications for the installation of new sanitary sewer
systems, pumping 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.
CENTRAL SAN COMPLIANCE
WDR ITEM A:
DESIGN SPECIFICATIONS AND STANDARDS
DEVELOPER PROJECTS
Developer projects are projects designed and constructed with private funds. The projects range from
housing complexes to shopping centers.
STANDARD SPECIFICATIONS
Central San has published minimum design and construction standards for the use of customers,
contractors, and engineers beginning in 1956. The title of the document is "Standard Specifications for
Design and Construction (Standard Specs)". The legal authority for this document comes from the
following section of Central San's Code.
9.08.010 Planning, design, and construction.
Sewers that are intended for dedication to Central San as public sewers shall be planned, designed,
constructed, installed and repaired in accordance with this code and Central San's Standard Specifications
for Design and Construction(referred in this code as "standard specifications'). The standard specifications
shall be established and may be amended from time to time by ordinance and kept on file with Central San
Secretary in an uncodified manner. The use of any sewer facility connected to Central San system that fails
to comply with the standard specifications applicable at the time of its connection to Central San sewer
facilities constitutes a danger to human health and safety, public and private property and the
environment, and shall be considered a public nuisance.
(Ord. 253§1 (Exh. A (part)), 2008)
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Future revisions to the code will occur as needed.Whenever a section or the entire document is modified,
a letter is sent to all engineers and contractors who are registered with Central San.
The Standard Specs govern requirements for the design and all work regarding sewer construction and/or
projects financed by private individuals within the jurisdiction of Central San in Contra Costa County,
California.The Code and all ordinances of Central San are considered a part of these Specifications and all
plans, profiles,cut sheets, right-of-way documents,and specifications must conform to the standards and
requirements herein established.The jurisdiction of Central San includes the entire sewerage system and
its appurtenances from the point of connection with the building plumbing to the discharge terminus of
the treatment plant outfall. Ownership and maintenance of the building lateral to the point of connection
with the sewer main is the responsibility of the property owner.
The following is a list of the section titles in the 2020 edition of the Central San Standard Specifications
document:
Part I. General Requirements
Part II. Private Sewage Disposal Systems
Part III. Public Sewer Collection Systems
Part IV. Recycled Water Distribution Systems
Part V. Construction Requirements
Part VI.Technical Specifications
Part VII. Standard Drawings
Pat VIII. Glossary
Part IX. Index
These standards ensure that infrastructure built in Central San's service area will conform to accepted
practices and that equipment will operate properly. Ensuring new pipelines constructed during new
development project adhere to Central San specifications is of primary importance because the developer
is often responsible for constructing new sewer mains, and then dedicates them to Central San upon
completion of the project. Central San must ensure that the new infrastructure will not cause any short
term or long-term operational problems once Central San has ownership of the collection assets.
Adherence to the Standard Specs supports this aim. Project plans must be approved by Central San prior
to issuance of a construction permit.
CENTRAL SAN PROJECTS
Central San projects, also known as capital projects,are construction or rehabilitation projects on District-
owned facilities.These projects are managed by staff and are funded by Central San.
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STANDARD SPECIFICATIONS
The Standard Specs are used as guidelines for Central San's projects and variance from these requirements
may only be allowed when existing conditions prevent conformance to the Standard Specs and when such
variance is deemed permissible. Such conditions include existing underground facilities and elevations of
connection points to the existing sewer system, among others. In cases where materials and construction
techniques not covered in the Standard Specs are used, Central San Engineers use best engineering
judgment to approve or develop the design of the new/replacement sewers and pumping stations.
Central San uses standard General Conditions and project-modified Special Conditions and Technical
Specifications for bidding and constructing District projects.
Central San sewer projects may be designed by staff or by consultants.They are reviewed typically at the
10%, 50%, 95%, and 100% design completion level. Staff also conducts a scope check with CSO between
30%-50%of the design phase to ensure that all operational issues are addressed. Construction of Central
San sewer projects is managed and inspected by staff or contract staff.
COLLECTION SYSTEM PROJECTS
All the construction projects performed by CSO staff consist of spot repairs in pipe segments and manhole
repairs/replacements.The typical length of these spot repairs is six to ten feet. CSO staff relies on Central
San Standard Specs for Design and Construction for all projects.
CSO projects use the same design and construction standards as Developer and Central San projects.
WDR ITEM B:
INSPECTING AND TESTING PROCEDURES AND STANDARDS
DEVELOPER AND CENTRAL SAN PROJECTS
STANDARD INSPECTIONS AND TESTING
All plans for sewer projects are reviewed for compliance with Central San design standards at several
points before construction.At least two preliminary reviews and a final review occur before a construction
permit is issued. Cut sheets are prepared by the developer's engineer and reviewed by Central San staff
prior to construction. The designed pipeline is staked in the field and the Development Inspection group
compares the cut sheets they have approved to the stakes in the field.
Inspectors use Central San's Standard Specs, Code, approved project plans, the permit, and the
construction contract as the basis for inspection. Sewer projects are inspected during construction as to
the quality and acceptability of materials furnished, work performed, and manner of the performance of
construction.
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The permit states that it is the contractor's responsibility to arrange for timely inspection throughout the
project and to coordinate with Central San staff. Central San inspects and approves work in accordance
with Part V, Construction Requirements, in the Standard Specs. Inspection occurs during the construction
project and prior to the end of the contractor's one-year warranty period.
During construction, a Central San inspector will inspect the construction of a developer sewer on a
regular basis. During critical construction sequences, a Central San inspector is always present, and
inspection reports are prepared daily for Capital Projects.
After trench backfilling and before final acceptance of sewer projects, all sewers are inspected by CCTV,
and for new sewer installation, a low-pressure air test is conducted. After the sewer is inspected, a one-
year warranty period begins. When the warranty is about to expire, the line is re-televised to determine
if any defects are present. Construction files are archived following the completion of the projects.
COLLECTION SYSTEM PROJECTS
Capital Projects are CCTV-inspected by CSO staff after backfilling, but prior to asphalt installation.
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SSMP ELEMENT 6:
OVERFLOW EMERGENCY RESPONSE PLAN
WDR REQUISITES
D.13. (viii) Overflow Emergency Response Plan: The Enrollee shall develop and implement an overflow
emergency response plan that identifies measures to protect public health and the
environment.At a minimum, this plan must include:
(a) Proper notification procedures so that the primary responders and regulatory agencies are informed
of all SSOs in a timely manner;
(b) A program to ensure appropriate response to all overflows;
(c) Procedures to ensure prompt notification to appropriate regulatory agencies and other potentially
affected entities (e.g., health agencies, regional water boards, water suppliers, etc.)of all SSOs that
potentially affect public health or reach the waters of the State in accordance with the MRP.All SSOs
shall be reported in accordance with this MRP, the California Water Code, other State Law, and other
applicable Regional Water Board WDR or NPDES permit requirements. The SSMP should identify the
officials who will receive immediate notification,
(d) Procedures to ensure that appropriate staff and contractor personnel are aware of and follow the
Emergency Response Plan and are appropriately trained,
(e) Procedures to address emergency operations, such as traffic and crowd control and other necessary
response activities;and
(f) A program to ensure that all reasonable steps are taken to contain and prevent the discharge of
untreated and partially treated wastewater: to waters of the United States and to minimize or
correct any adverse impact on the environment resulting from the SSOs, including such accelerated
or additional monitoring as may be necessary to determine the nature and impact of the discharge.
CENTRAL SAN COMPLIANCE
Central San's collection system is a sanitary sewer system that is separate from the regional storm water
conveyance system. It is not a combined sewer system.
Central San strives to operate,manage,and maintain all parts of the publicly owned sanitary sewer system
in a manner that will prevent SSOs and mitigate the impact of the SSOs that do occur.
To improve our SSO response, Central San has invested in an Automatic Vehicle Location (AVL) system.
Office staff immediately knows which crew is nearest to an SSO and will dispatch that crew to respond.
The new AVL system has the added benefit of providing valuable data to our fleet maintenance group,
improving vehicle maintenance scheduling, and thus keeping our cleaning trucks in the best operating
condition for sewer cleaning.
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To help promote quick response to any emergency associated with the collection system, Central San's
website has a list of call-in numbers for the public:
Table 6.1 Central San Emergency Contact Numbers
Emergency Contact Phone Number
Sewer Spills (925)933-0990
Odors-Sewers or Treatment Plant (925)335-7703
Manhole Adjustment&Repairs (925)933-0990
Reporting Illegal Discharges or Spills into Sewer (925)229-7288(during business hours)
System (925)229-7214(after business hours)
RESPONSE PLANS
Central San maintains two types of emergency plans to reduce the risk and consequences of such
occurrences:
a) Sanitary Sewer Overflow& Backup Response Plan
b) Pumping Station Emergency Response Plan
Central San's SSOBRP contains standard procedures and guidelines for responding to, cleaning up, and
reporting SSOs that may occur within its service area.Central San's SSOBRP satisfies the SWRCB Statewide
General WDR for Wastewater Collection Agencies,which require wastewater collection agencies to have
an overflow emergency response plan.
Information contained in this Element is sourced from Central San's SSOBRP, and is available upon
request, and can also be found on our website centralsan.org.
The Pumping Station Emergency Response Plans contain procedures for the individual pumping station.
Each pumping station has a customized Pumping Station Emergency Response Plan to accommodate the
presence of specific engines,fuels, chemicals, electrical equipment, and high flows of wastewater at that
pumping station.A Pumping Station Emergency Response Plan is similar to the SSOBRP but has additional
sections to cover topics such as personnel evacuation, first aid, fire, and the specific equipment at the
station.
WDR ITEM A:
PROPER NOTIFCATION PROCEDURES
Beginning December 1, 2004, Central San was required to report SSOs in accordance with the San
Francisco Bay RWQCB online reporting system. Central San also maintains an internal database of all
overflows to track system performance. As of May 2, 2007, Central San began reporting overflows to the
State's electronic reporting system (CIWQS), as required by State Board Order No. 2006-0003.
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Customer calls to report a Sewer Stoppage or Overflow YES
NO
Business Hours: After Hours:
-Mon- Fri, 6:00 am to 2:30 pm -Calls routed to Answering Service.
-Calls are routed through CSO Phones: -Service notifies On-Call Crew Leader.
925-933-0990 or 925-933-0955
CSO Dispatch: On-Call Crew Leader:
1. Respond to the caller as appropriate. Record the date,the time the call was
2. Refer to section 313, Customer received,the time you returned the
Relations and Communications Tips, call,the caller's name, phone number,
for additional details. address,and the nature of the problem
on the OnCall Work Report.
3. Record the information on the CSO
Dispatch Phone Log(213).
• YES
� Go to Side 2
NO
1. Provide the caller with contact
info for the responsible agency.
Figure 6.1. SSO Intake Procedure, Slide 1
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From Side 1
1. Tell the callerwho will respond,estimate timeof arrival and what area(s)will need to be accessed.
2. Tell the callerthata stoppage in the sewer mainline will be cleared promptly butthat CCCSDis
not allowed to work on a stoppage in a lateral service line.
3. Give the calleryour name and phone number in case they have any f urtherquestions.
4. Advise the cal lerto keep family members and pets away from affected areas.
5. Advise the caller not to remove any contaminated items.Let the professional cleaning company
do it.
6. Advise the cal lertoturn off their HVAC system.
7. Advise the cal lerto move any uncontaminated property away from the overflowarea if it can be
done safely.
F- Business Hours: After Hours:
CSO Dispatch: On Call Crew:
Respond tothe service call location.
1. Log the service call into CityWorks.
2. Dispatch the nearest appropriate
crewto the caller's location.
Figure 6.2.SSO Intake Procedure,Slide 2
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WDR ITEM B:
PROGRAM TO ENSURE APPROPRIATE RESPONSE
Central San responds to all SSOs on a Risk Basis, regardless of the size or location of the SSO. High risk
areas shall include, but not be limited to:
1. the proximity of the SSO to sensitive populations, specifically public and private schools, parks
and recreational areas, as well as high density commercial and residential locales
2. discharges to surface waters, especially during the recreational season from May to September
3. any other location which poses an imminent and substantial endangerment to the public health
or the environment
After a crew arrives on the scene and determines the appropriate course of action, they classify the spill
as a Category 1, 2, or 3 and follow the procedure described in the SSOBRP. During this time, the cause of
the overflow may be determined, and the crew will notify the responsible party or resident.
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® 1 YES
� 311 NO
1. Eva I u ate the extent and s us pected cause of the SSO.
2. If the SSO wi I I I i kely,or a I ready is,impacting private property or receiving waters,photograph the
areas impacted.
3. Inform your Supervisor ora CSO Superintendant of the SSO.
4. Refer to section 5A for emergency response vendor contact information.
CLEAR THE STOPPAGE
1. Use cleaning equipment a ppropriateto the situation(hydro,rod,
Is the spill coming from a CCCSD YES hand-rod). Refer to sections 3F and 3G for additional info.
manhole or cleanout? L3. Photograph
stoppage is resolved,remove tools and equipment.
staff activities whi leclearingthe stoppage,if possible.
NO
PUMP STATION FAILURE RESPONSE
Is the SSO coming from a YES 1. Ensure all electrical hazards havebeen Locked&Tagged Out!
' 2. Determine the causeof the pump station failure.
3. Refer to the CCCSD Pump Station Emergency Response Plan.
NO 4. Photograph staff activities and document all actionstaken.
DIVERSION&CONTAINMENT
Is the spill enteringan area ti 1. Divert away from sensitive areas(unplugged storm drains,
where public contact might schools,day cares,playgrounds,intersections). Coverunplugged
storm drains with mats,dirt,or other dikingmaterial.
2. Prevent public contact. Usecones or barricades for laneclosure
until the spill can becompletely removed. Postsignstowarn
publicof rawsewage.Photograph warningsigns when inplace.
NO 3. Contain the spill and return it to the system if possible:
* PI ug storm dra i n catch basi ns or use rubber mats to cover bas i n
inletand divert flowto catch basin.
*
Bui I d or excavate a berm to cha nnel fl ow to downstream
manhole. Barricadethe manhole if you leave itopen.
* Use bypass pumps to pump around blockage until itcan be
removed.
* Divert contents to lowarea of ground where it can be collected
later.
4. Photograph how the SSO was diverted or contained.
PRIVATE PROPERTY SSO
1. Inform Home Owner the stoppage is not in public sewer and inform them to contact
a licensed and bonded plumberto address their private SSO.
G o To
2. Photograph&document ALL evidence that the SSO is from private property. Side 2
3. Provide customer with the Sewer Spill Reference Guide(4-69)and the Maintaining
the Flow Brochure(4-610),both from the Incident Envelope.
4. If customer is not home,complete and leavethe Customer Service Door Hanger.
5.Complete Work Order and routeto Supervisor.
Figure 6.3. Responding to a Sanitary Sewer Overflow,Slide 1
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From NO NO
Side 1
YES
YES
Use the Hach Ammonia Kit(in Field
COLLECT WATER SAMPLES SamplingKit)to tracethe extent of
the SSO inthe storm drain.
1. Use the Field Sampling KitandfollowSOP.
See 3.1 for additional info.
2. Assign staff to post the Warning-Raw
Sewage sign(5B)alongthe shorelineof STORM DRAIN CLEANING SOP
impacted waters or as directed by the
County Environmental Health Dept. 1. Seal or berm the storm drain immediately
downstream of where the SSO reached.
2. Photograph impacted storm drain catch
basins beforecleaning.
NO 3. Vaccuum any visiblesewageand record the
volume of sewage recovered.
4. Flush impacted sections of storm drain with
YES decholorinatedwater and record
the volume of flush water recovered.
CONTAINMENT 5. Remove all visiblesigns of sewage.
6. Return flush water(ifchlorinated)to
1. Contact entalour istan eisre aired. sanitarysewer and record the volume of
containment assistanceis required. flush water recovered.
7. Photograph al I storm drain catch basins
after cleaning is completed.
AREA CLEANUP
1. Assign staff to begin cleanup.
1. Estimate SSO volume using one of the NOTE: If SSO was caused by a lateral or
methods listed in section 3K. private I i nefai lure,cleanup impacted public
2. Rememberthat the spill probably started areas and document stafftime, equipment
sometimebeforeitwasreported. Account used and expenses incurred.
for this when estimatingSSO volume. 2. Remove all signs of gross pollution (toilet
paper,solids,grease etc.)
3.Flush area with metered, dechlorinated
DOCUMENTATION&REPORTING water:
1. Complete the Overflow/Stoppage Continue flushinguntil clearHach
Response Form(3L). (Ammonia)test.
Set up berm/other containment to collect
2. Includeprinted copies of digital photos. all flush waterso itcan be
3. IncludeaII notes,drawings, calculations and returned to the sewer.
any other documentation from the SSO. Don't use disinfectants that may enter the
4. Forward the entire package to the CSOD storm drain or other water body.
Su erintendent. 1 4. Photograph the area when cleanup
operation is complete.
1'
Figure 6.4. Responding to a Sanitary Sewer Overflow, Slide 2
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The following table (Table 6.2) is intended as a guide on how to respond to sewer overflows. Each
indicated response tactic may not be appropriate for a given sewer overflow.Central San staff choose the
tactic that best meets the circumstances at the time and the resources available. Protecting employees,
the public, and environmental health are top considerations when responding to a sewer overflow.
Table 6.2 Central San Overflow Response Tactics
•
Hydro Jet ✓ ✓ ✓ ✓ ✓
Rodder ✓ ✓ ✓ ✓ ✓
Vacuum Truck ✓ ,/ ✓ ✓ ✓ ✓ ✓ ✓
TV Van ✓ ✓ ✓ ✓
Backhoe* ✓
Hand Tools ✓
Bypass Piping ✓ ✓ ✓ ✓ ✓
Bypass Pumping ✓ ✓ ✓ ✓ ✓ ✓ ✓
Manhole Entry** ✓
Storage Tanks or Set Up ✓ ✓ ✓
Ponds
USA Request* ✓
Backup Generators ✓ ✓
*USA Requests: (800) 227-2600
**Confined Space Entry Procedures are required
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POST-RESPONSE DEBRIEF
After a stoppage, CSO CCTVs the line within two days. By doing so, we can assure the line is completely
clean and any defects are noted and repaired immediately. By reviewing the video in the Operations
Meeting, we can discuss and decide on a proper cleaning schedule and what tool should be used for the
cleaning.
WDR ITEM C:
NOTIFICATION TO OTHER ENTITIES
Central San's website has emergency contact information for events such as sewer spills. Sewer spill calls
are routed to CSO Dispatch during normal business hours.After-hours calls are routed to the On-Call Crew
Leader. When an SSO to surface waters or public areas is confirmed, the CSO Division Manager notifies
the Director of Operations, who then notifies the General Manager.
Central San's reporting and notification procedures follow the requirements of the SWRCB Monitoring
and Reporting Program requirements for Wastewater Collection Agencies. Refer to Table 6.3 below.
Table 6.3 Notification, Reporting, Monitoring and Record Keeping Requirements
MethodElement Requirement
Within two hours of becoming aware of any Category 1 SSO
greater than or equal to 1,000 gallons discharged to surface
Notification water or spilled in a location where it probably will be discharged Call Cal OES at:
to surface water, notify the California Office of Emergency (800)852-7550
Services(Cal OES)and obtain a notification control number.
Category 1 SSO:Submit draft report within 3 business days of
becoming aware of the SSO and certify within 15 calendar days of
SSO end date.
Category 2 SSO:Submit draft report within 3 business days of
becoming aware of the SSO and certify within 15 calendar days of
the SSO end date.
Enter data into the CIWQS
Category 3 SSO:Submit certified report within 30 calendar days Online SSO Database certified
of the end of month in which the SSO occurred. by the Legally Responsible
Reporting SSO Technical Report:Submit within 45 calendar days after the Official(s)
end date of any Category 1 SSO in which 50,000 gallons or greater (http://ciwgs.waterboards.ca.gov/)
are spilled to surface waters.
"No Spill" Certification: Certify that no SSOs occurred within 30
calendar days of the end of the month or, if reporting quarterly,
the quarter in which no SSOs occurred.
Collection System Questionnaire: Update and certify every 12
months.
Water quality results are
Water Quality Conduct water quality sampling within 48 hours after initial SSO required to be uploaded into
CIWQS for Category 1 SSOs in
Monitoring notification for Category 1 SSOs in which 50,000 gallons or which 50,000 gallons or
greater are spilled to surface waters.
greater are spilled to surface
waters
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Table 6.3 continued
• SSO event records.
• Records documenting Sewer System Management Plan (SSMP)
implementation and changes/updates to the SSMP. Self-maintained records shall
Record Keeping • Records to document Water Quality Monitoring for SSOs of be available during
50,000 gallons or greater spilled to surface waters. inspections or upon request
• Collection system telemetry records, if relied upon to
document and/or estimate SSO Volume.
Refer to the Sanitary Sewer Overflow& Backup Response Plan for further information.
CaIWARN — MUTUAL ASSISTANCE PROGRAM
If an emergency arises, Central San also has the option to call upon
�r� Tl� neighboring agencies for assistance; or as needed, assist other
agencies; as part of CaIWARN: the California Water/Wastewater
Emergency Response Network for mutual assistance. This program
RH provides its member utilities with:
wwe�;'xa,��.a�benr��rpsrreNeMr.k • A standard omnibus mutual assistance agreement and process
for sharing emergency resources among Signatories statewide.
• The resources to respond and recover more quickly from a disaster.
• A mutual assistance program consistent with other statewide mutual aid programs and the
SEMS and the NIMS.
• A forum for developing and maintaining emergency contacts and relationships.
• New ideas from lessons learned in disasters.
CalWARN functions in coordination with the State Office of Emergency Services. Additional information
on CalWARN is provided at www.calwarn.org.
Central San also has Purchasing procedures in place to expedite assistance from private industry
professionals, service providers and contractors as needed.
WDR ITEM D:
TRAINING PROCEDURES FOR STAFF & CONTRACTORS
OVERVIEW
The most important component of any emergency response plan is competent and prepared staff.Central
San employees receive initial and periodic refresher training on safety and emergency response skills that
cover a range of scenarios.
Central San also undertakes emergency operations training to prepare for both local and regional
emergencies and natural disasters, such as earthquakes. Central San has strong relationships with its Bay
Area neighboring agencies and frequently helps other agencies during times of emergency.
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Contracted staff are not provided such training because Central San does not employ contractors to
perform emergency response work. In the case of a large overflow,where outside assistance is necessary,
on-site supervision and direction will be provided by trained and competent Central San staff and
management.
Refer to the Training Program section in Element 4 for more information on Central San's training
program.
MANDATORY SAFETY TRAINING
CSO staff have the following mandatory training schedule:
1. SSMP Training
2. Excavation/Competent Person
3. Traffic Control/Flagger Training
4. SCBA/Confined Space Training
5. Driver Commentary Training
6. SSOBRP
WDR ITEM E:
PUBLIC SAFETY PROCEDURES
The crews make every effort to contain the spill, reduce any further damage, restore the flow, and
document the event, including regulatory requirements. All Central San field staff are trained in traffic
control. Crowd control is primarily used to prevent the public from encountering the overflow. Cones and
signage are typically used. Central San will coordinate with regulatory agencies and the Department of
Health Services to determine the need for warning signs,and then post them in appropriate locations. For
a large overflow, a portion of the crowd control will be performed by local municipal employees, such as
police and fire.
WDR ITEM F:
SSO CONTAINMENT & DISCHARGE PREVENTION
Central San's SSOBRP is designed to ensure all reasonable steps are taken to contain and prevent the
discharge of untreated or partially treated wastewater to the Waters of the State; and to minimize or
correct any adverse impact on the environment resulting from a SSO.
Central San takes appropriate action to secure the SSO-impacted area, relieve the cause of the overflow,
and to ensure the affected area is cleaned as soon as possible to minimize health hazards to the public
and to protect the environment.
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Central San collects water quality samples for ALL Category 1 SSOs. The Superintendent or a Field
Supervisor will collect, transport, and submit water quality samples for analysis to Central San's
Laboratory, located at our Treatment Plant in Martinez, California. Samples are taken at or near where
the SSO reaches the surface water (entry point), approximately 100 feet upstream, and downstream of
the entry point.The samples are collected as soon as the blockage has been cleared or if additional staff
is available the sampling activities will be completed in concurrence with clearing the blockage. The
samples are analyzed for ammonia, total coliform, fecal coliform, enterococcus, and a-coli. Additional
follow up samples are recommended to confirm the extent that the impact reverts to baseline levels.
Follow up samples can be used to determine if posting of warning signs should be discontinued, if signs
were posted. Collaboration with the Office of Emergency Services, Fish and Wildlife, and the County
Health Department shall continue until closures have been removed.
CSO staff utilize mobile devices in the field.These devices are equipped with a geospatial CMMS software
tool, which contains maps that identify the location of public sewers, waterbodies, and other features
throughout Central San's service area.This informational tool provides CSO staff with a valuable resource
when responding to SSOs. It also provides the ability for staff to accurately document the specific location
of the SSO.
The SSOBRP provides staff with detailed procedures and guidelines for containing overflows and
recovering untreated wastewater.
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SSMP ELEMENT 7:
FOG CONTROL •
WDR REQUISITES
D.13(vii)Fats, Oils, and Grease(FOG)Control Program:Each 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 as to 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 FOG,
(b) A plan and schedule for the disposal of FOG generated within the sanitary sewersystem service area.
This may include a list of acceptable disposal facilities and/or additional facilities needed to
adequately dispose of FOG generated within a sanitary sewer system service area;
(c) The legal authority to prohibit discharges to the system and identify measures to prevent SSOs and
blockages caused by FOG;
(d) Requirements to install grease removal devices(such as traps or interceptors), design standards for
the removal devices, maintenance requirements, best management practice (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 establishment of a
cleaning maintenance schedule for each section, and
(g) Development and implementation of source control measures for all sources of FOG discharged to
the sanitary sewer system for each section identified in(f)above.
CENTRAL SAN COMPLIANCE
GENERAL
Central San's FOG Control Program reduces the number of SSOs caused by FOG discharged to the sewer
collection system while managing the operating and maintenance costs associated with FOG control.
The FOG Control Program includes two primary components: 1) cleaning and maintenance of the
collection system; and 2) inspection, enforcement, and education for sources of FOG from food service
establishments (FSE). This element provides a summary of the plans, procedures, and processes of the
program. The FOG Control Program uses District Code Title 10 (Source Control Ordinance), the Standard
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Specs, and customer outreach materials as reference documents. Relevant portions of the Code and the
Standard Specs are discussed in detail in Element 3 (Legal Authority) of this SSMP.
WDR ITEM A:
PUBLIC EDUCATION
Environmental Compliance (EC) with assistance from Communication Services, has created FOG
pamphlets, posters, and brochures. EC staff deliver these outreach items to FSE customers at the time of
inspection and by mail. Outreach is key to FOG control because it promotes preventative measures to
minimize grease in the collection system. The materials are designed to educate the public about
improper grease disposal and to promote the use of BMPs.
Specific operation and maintenance documents are provided for grease traps and for grease interceptors.
Other documents outline proper grease disposal techniques,describe the available pretreatment devices,
and explain the inspection process. Copies of materials are located at the end of this element.
EC and Communication Services are continually updating and improving outreach materials that focus on
specific issues of grease, grease traps, and grease interceptors.
In addition to EC outreach efforts, Communication Services does FOG outreach to residents via Central
San's Pipeline newsletter, social media, and videos; and CSO leaves a door hanger for customers when
they discover an overflow or blockage due to grease accumulation.The door hanger has tips on preventing
grease from entering laterals and information about proper grease disposal.
WDR ITEM B:
FOG DISPOSAL
Central San provides disposal options for FOG wastes for FSEs under its waste hauler program that
includes FOG waste haulers. In addition, Central San's Household Hazardous Waste Collection Facility
accepts cooking oils from residential customers which is frequently used during the holiday season. As
part of the waste hauler program, approved and permitted waste haulers are authorized to offload FOG
at the headworks of the treatment plant. The waste haulers using Central San's treatment plant for
disposal must use a Central San manifest for each load documenting the generator of the waste.
District Code Title 10 was modified in 2007 to require all waste haulers to identify the disposal facility of
the hauled wastes on the documentation provided to the generator of the waste. This documentation
standard provides some paperwork to verify proper disposal or facilitate the investigation of illegally
dumped wastes when they are discovered.
EC maintains a list of FOG waste haulers active in the Central San service area to provide to FSEs during
inspections to facilitate proper disposal of FOG wastes.
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WDR ITEM C:
LEGAL AUTHORITY TO PROHIBIT DISCHARGES TO SEWER
Central San has the authority to adopt and implement grease control regulations on public and private
property under the District Code,Title 10 as discussed in Element 3 (Legal Authority) of this SSMP. Under
this ordinance and general permit conditions the requirements presented below are imposed. More
details are available in Element 3.
Users who are currently connected or contribute to Central San's facilities, or who propose to connect or
contribute to Central San's facilities, must obtain a Connection Permit. FSEs are currently a Class III
Industrial User and are not required to obtain a wastewater discharge permit at present (District
Code 1.08 and 10.12.020-030) but they must comply with Central San standards including compliance
with Title 10 of the District Code.
Waste haulers that discharge to Central San facilities must obtain a Central San Waste Hauler Permit and
meet performance standards (District Code Chapter 10.28).
Users must install and maintain a grease pretreatment device when Central San finds it is necessary for
the proper handling of liquid waste containing grease (District Code 10.12.090 and 10.32.010). Specific
standards for the maintenance of a grease pretreatment device (e.g., minimum cleaning frequency,
minimum performance standard for cleaning, and prohibition for decanting wastes) are established in
Title 10, Section 10.32.035.
WDR ITEM D:
GREASE REMOVAL DEVICES
EC and the Permits section perform a plan review to determine the necessity of a grease pretreatment
device and specify the design requirement if a device is needed. EC staff uses the following criteria to
determine the need for a pretreatment device:
• Type of facility
• Volume of business or operation
• Size and nature of facilities
• Type of service provided
• Type of high grease producing equipment/practices used
• Type of foods or other materials used in cooking, processing, or manufacturing operations
• Overall potential for grease-laden discharges
• Existence of devices, procedures, or processes which are designed to minimize the amount of
grease entering the sewer system
Certain types of FSEs have been identified as either requiring a grease interceptor, grease trap(s), or not
requiring a grease removal device(GRD). If during the plan review process,a FSE operator does not believe
that their operation needs the designated GRD, they can request a variance from the standard. EC staff
receives and processes the variance request to determine if it has merit. EC staff will accept, deny, or
modify the variance request. The final determination of the variance request is communicated to the
Permits section for processing.
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Section 5 of Central San's Standard Specs was adopted using the Uniform Plumbing Code as reference and
describes the requirements, design, and installation of a grease pretreatment device. The document is
described in Element 7 of this SSMP and the entire text of Section 5 is available at the following link:
https://www.centralsan.org/sites/main/files/file-
attachments/ec section 5 standard specs 2020 O.pdf?1599668718
Section 5 is periodically revised to ensure the standards are current and protective of Central San's
operations. Under the Standard Specs Section 5-01A, conditions such as the following are imposed:
• The grease pretreatment device must be installed in a suitable location (outside for a grease
interceptor and inside for a grease trap)that is readily accessible for periodic cleaning, inspection,
and/or sampling.
• The grease pretreatment device shall be connected to specific plumbing fixtures or drains as
required by Central San.
• The size of the grease pretreatment device is determined by Central San on a case-by-case basis
using criteria such as the size and type of facility,volume of business or operation,square footage
of the FSE, number and type of drainage fixtures units containing grease-laden wastewater, and
estimated flow rate.
WDR ITEM E:
AUTHORITY TO INSPECT & ENFORCE FOG ORDINANCE
Central San has the right to inspect users to ensure all standards and requirements are being complied
with (District Code 1.08 and 10.12.080). This inspection authority enables inspectors to evaluate both
production areas and waste management areas of facilities (e.g., pretreatment equipment).
Central San may employ a variety of enforcement actions for violations of Title 10 of the District Code.
The most common form of enforcement involves EC inspectors issuing written Warning Notices (WN) or
Notice of Violations (NOV) to FSE operators prompting corrective actions within a specified timeframe.
This enforcement process achieves a very high rate of compliance. More structured,formal enforcement
processes are used to achieve compliance when the WN and NOV process does not achieve compliance.
Formal enforcement processes range from assessment of civil administrative penalties to suspension or
termination of services for any user who is found to be in violation of the ordinance.
Table 7.1 FOG Control Statistics
Number of SSOs caused by FOG 2 2 3 3 1
FOG Inspections for grease interceptor installation 14 9 12 5 9
FOG Inspections for discharge compliance 537 570 555 264 589
Total number of FOG Inspections completed 551 579 567 269 598
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WDR ITEM F:
MANAGING SEWER SECTIONS SUBJECT TO FOG
CSO maintains a database that records all maintenance and inspection events in the collection system
including repairs and cleaning. Pipe inspection is captured in video format with key details entered into
the database as the inspection takes place. CSO notes lateral connection, debris, flow direction, size of
pipe, and the qualitative condition of the pipe. CSO records job information as work takes place in the
field using laptop computers and uploads the information to the main database at the CSO office.
CSO removes FOG from the sewer collection system. CSO also inspects pipe segments to identify problem
areas and responds to service calls due to blockages and overflows. CSO has the most direct interaction
with grease in the system and provides valuable information for FOG control from their on-site
experiences.CSO sets cleaning priorities based on pipe inspections and SSO incidence. CSO communicates
the location and status of problem areas with the EC workgroup to help set pretreatment device
inspection priorities.
New and upgraded pipes are placed on a seven-year cleaning frequency. If inspections reveal problems
with a pipe segment such as grease accumulation, cracks, leaks, or blockages (e.g., root), the cleaning
frequency is increased as necessary. For FOG impacted pipes,the cleaning frequency is adjusted overtime
as field crews provide reports on current grease conditions in the pipe.
A hot spot evaluation program is implemented by Central San to understand the causes of FOG
accumulation in pipe segments that have a very frequent cleaning cycle.The program relies on the use of
CCTV to evaluate FSE sources, pipe cleaning effectiveness, and impacts due to structural problems
(e.g., sags and off-set joints).The findings of this program are used to prioritize operational responses and
capital project schedules to optimize the costs associated with managing the impacts of FOG on Central
San's collection system.
Central San uses Geoportal for management of geographical data. Geoportal contains maps of pipelines
and structures within the service area. Parcels and pipe segments can be selected to access
supplementary information including information such as permit and maintenance history.
WDR ITEM G:
SOURCE CONTROL PROGRAM MEASURES
FSEs are inspected on a regular basis to determine if they are employing proper BMPs to control grease
sources, if a grease pretreatment device is needed, and if they are properly maintaining a grease
pretreatment device that is already in service.
Inspection sites are prioritized using the following criteria:
• Complaint investigations
• New facilities in need of an initial compliance inspection
• Facilities with recorded violations of Title 10
• Facilities within an area defined by CSO as problematic due to FOG accumulation
• Routine cycling of FSEs to assess compliance with standards
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To determine the proper installation of a grease interceptor, Central San will perform a construction
inspection.Construction inspections are done either by Central San's Construction Inspectors or the cities'
building inspectors. Because Central San does not have jurisdiction over the plumbing inside a facility
(Title 10 provides authority to require installation and maintenance of a grease removal device), cities'
building departments are responsible for inspection of the installation of grease traps. EC staff follows up
with the city, county building department, or the FSE to verify that a required grease trap was installed.
EC staff performs more than 1,200 sewer and/or storm water compliance inspections annually. These
inspections include FSEs and other commercial facilities to ensure compliance with ordinances and proper
operation to protect discharge quality. Compliance inspections at FSEs involve:
• Recording the number of fixtures in the facility
• Assessing the use of kitchen BMPs to control FOG discharges
• Assessing the need for grease trap or interceptor at FSEs that don't currently have a unit
• Checking the condition of the grease trap or interceptor
• Noting dates of grease interceptor/trap cleaning,means of grease disposal,and how oil is recycled
when applicable
EC maintains a database of FSEs within the service area. The database contains records of inspection,
warning notices, notices of violation, and service call data. In addition, files are maintained for each FSE
inspected by the EC program.The files are maintained by the address of the FSE.
EC designates the number of compliance inspections needed in each city and inspectors choose specific
facilities to inspect by referring to a database that contains records of previous inspections.The frequency
of inspections depends on a facility's potential for problems and compliance history.
If a facility is found to be in compliance, then the next inspection will be in three to five years depending
on the potential to generate FOG wastes. A facility that is out of compliance will be inspected more
frequently until EC is satisfied with customer's return to compliance and ability to maintain compliance.
Compliance inspections are conducted without notifying the customer in advance so that the inspectors
may get an accurate view of normal operating conditions.
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SSMP ELEMENT 8:
SYSTEM EVALUATION AND CAPACITY ASSURANCE PLAN
WDR REQUISITES
D.13. (viii)System Evaluation and Capacity Assurance Plan: The Enrollee shall prepare and implement a
capital improvement plan(CIP)that provides hydraulic capacity of key sanitary sewer system elements for
dry weather peak flow conditions, as well as the appropriate design for storm or wet weather events.At a
minimum, the plan must include:
(a) Evaluation: Actions needed to evaluate those portions of the sanitary sewer system that are
experiencing or contributing to a SSO discharge caused by hydraulic deficiency. The evaluation must
provide estimates of peak flows(including flows from SSOs that escape from the system)associated
with conditions similar to those causing overflow events, estimates of the capacity of key system
components, hydraulic deficiencies (including components of the system with limiting capacity)and
the major sources that contribute to the peak flows associated with overflow events.
(b) Design Criteria: Where design criteria do not exist or are deficient, undertake the evaluation
identified in (a)above to establish appropriate design criteria.
(c) Capacity Enhancement Measures: The steps needed to establish a short- and long-term CIP to
address identified hydraulic deficiencies, including prioritization, alternatives analysis, and
schedules. The CIP may include increases in pipe size, inflow and infiltration(1/1)reduction programs,
increases and redundancy in pumping capacity, and storage facilities. The CIP shall include an
implementation schedule and shall identify sources of funding.
(d) Schedule: The Enrollee shall develop a schedule of completion dates for all portions of the capital
improvement program developed in (a) - (c) above. This schedule shall be reviewed and updated
consistent with the SSMP review and update requirements as described in Section D. 14.
CENTRAL SAN COMPLIANCE
Central San undertakes Master Planning every five to ten years to evaluate
the present and future needs of the collection system. Collection system
assets are evaluated in terms of hydraulics, condition, and performance.
Hydraulic modeling is used extensively by Central San to evaluate capacity,
:h
for both dry weather flows and wet weather flows. - =
A GIS-integrated, risk-based asset management and capital planning connaREHENswEWASTEWATER
MASUR
software platform (InfoWorkso) is used to assist staff in identifying and
prioritizing collection system improvement needs. Infrastructure data and
CMMS data is inputted into the software platform. Using GIS, staff can
analyze the data collectively as a system,or individually, as individual pipe
segments. Refer to Element 4 for more information.
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Sewer capacity can also be affected by the accumulation of roots, fats, grease, or other debris in pipes.
CSO has a goal of cleaning all lines 18 inches and smaller at least once every 84 months.A CMMS program
is utilized to track/schedule maintenance. Based on the results of the cleaning, the cleaning
schedules/frequencies are adjusted to optimize collection system performance and labor utilization.
CMMS data is also utilized in helping to identify possible segments that need replacement. Refer to
Element 4 for further information on the Central San's collection system rehabilitation and replacement
process.
Central San is commencing another Collection System Master Plan Update in 2022 to continue to optimize
infrastructure planning and budgetary needs,and to further enhance the"line-of-sight" between strategic
objectives and asset management objectives.
WDR ITEM A:
CAPACITY EVALUATION
HYDRAULIC MODELING & FLOW MONITORING
Central San has used hydraulic modelling for many years to simulate collection system flows for different
scenarios. In 2016, Central San enhanced its modeling capabilities by creating a new dynamic model.
Large-scale, multi-year flow monitoring and Gauge Adjusted Radar Rainfall (GARR) data was used to
calibrate the model and provide insight into rainfall dependent inflow and infiltration (RDI/1) in Central
San's service area. rR
47.
1.1
Figure 8.12015-2016 Flow Monitoring Locations
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The model estimates diurnal dry weather and peak wet weather flows for the design storm event under
current and projected growth scenarios. Growth scenarios incorporate projections from the Association
of Bay Area Government (ABAG) regional planning agency for the nine-county San Francisco Bay Area.
The new hydraulic model covers approximately 290 miles of pipe, which includes:
• All pipes included in the Master Plan model network
• All other pipes identified as 10 inches in diameter or larger
• Pipes smaller than 10 inches that are downstream of pipes 10 inches or larger
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Central San's new model will continue to be updated on a regular basis, and further developed to include
smaller diameter pipes and to account for changes in future growth projections and land use. Central
San's small diameter pipe hydraulic evaluation toll is used for pipes less than 10 inches diameter.
WDR ITEM B:
DESIGN CRITERIA
Central San uses a 10—year recurrence frequency storm event as the basis for design flow estimates.
Design storm rainfall pattern is based on a large historical storm that had a significant impact on the
collection system: the December 30-31, 2005 rainfall event. The spatial variation across the service area
for the design event is based on historical mean annual precipitation.
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The December 30-31 storm was approximately 24 hours in duration, with rainfall increasing gradually up
to a high peak-hour intensity,then receding in intensity toward the end of the storm.
Timing of peak RDI/I was adjusted to coincide with peak dry weather flows (PDWF) to ensure the model
was conservative and ensure the design peak wet weather flows (PWWF) will always be greater than
PDWF.
Central San generates base wastewater flow (BWF) on calibrated residential unit flow factors and non-
residential flows taken from Central San's SunGard database.
Groundwater infiltration (GWI) response parameters and RDI/I response parameters are based on 2015-
2016 flow monitoring data used for model calibration.
WDR ITEM C:
CAPACITY ENHANCEMENT MEASURES
OVERVIEW
Aside from the north Concord system, Central San's Collection System has sufficient capacity for existing
and future dry weather flows, including peak daily flows. Capacity improvements are only required for
correcting wet weather design event capacity deficiencies.
Central San Master Planning typically occurs on a five- to ten-year cycle, and identifies current and
projected capacity needs across its service area. Most recently, as part of the CWMP, the capacity of the
trunk sewer system(mostly pipes of 10-inch diameter and larger)was analyzed for a 10-year design PWWF
event using the new hydraulic model.
Approximately seven miles of sewer pipes have been determined to be capacity deficient. Capacity
deficiencies are triggered when the model indicates surcharging will occur in manholes within five feet of
the ground surface. Replacement sewers to increase capacity are sized to accommodate the 10-year event
and limit water depths in pipes to Central San's design standards. Refer to Element 5 for more information.
In addition, a 20-year event was simulated in the model to confirm there would be no predicted overflows
in the improved system after the addition of the larger replacement or relief sewers.
The model also confirmed that the capacity of the 10 largest pumping stations is adequate for a 10-year
design event,with exception of one pumping station which may require expansion when projected future
flows are realized.
PROJECT PRIORITIZATION
Pipes identified for upsizing or hydraulic relief are prioritized by model-estimated SSO volume under
design storm event conditions,as well as the proximity to and relative elevation of the nearest water body
or creek.
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CAPITAL PLANNING
Central San's Capital Planning process uses Master Planning technical reports together with other
planning documents and studies to support the generation of the CIP and the CIB. Central San staff then
prioritizes the Capital Improvement needs while ensuring congruency to Central San's Strategic Plan.
Central San's 2017 CWMP recommended capacity improvement projects designed to provide sewer
system capacity for existing and future development. The CIP includes 20 gravity sewer capacity project
areas, totaling approximately 19,000 feet of collection system piping. The estimated capital cost of the
capacity improvement projects is approximately$14 million.
Capacity improvements include either replacing existing trunk sewers or adding new trunk sewers to
convey PWWF from the design storm event.
R&R improvements include improvements to existing sewers or pumping stations to extend their useful
lives, repair structural deficiencies, and improve performance to provide adequate peak hydraulic
capacity.
Planned improvements include sewer improvements, pumping station improvements, and projects to
meet regulatory requirements Central San intends to complete within the planning period.
Annual improvements include estimated annual project costs Central San identified as annual projects
that maintain the collection system throughout the planning period.
Refer to Element 4—O&M Program,WDR Item C,for information on Central San's Capital Planning process
and sources of funding for the CIP and CIB.
PROJECT DEVELOPMENT
Capacity related projects are developed during the Master Planning process. Preliminary upsizing and
relief project corridors are determined by running alternative scenarios in the hydraulic model with
upsized pipes and/or adding relief sewers. Projects are further refined during project pre-design to ensure
constructability and long-term operation and maintenance needs are addressed. Any pipe size or
alignment changes made during the design process are analyzed in the model to ensure hydraulic design
criteria are satisfied.
DESIGN AND CONSTRUCTION
Central San projects,also known as Capital Projects, are construction or rehabilitation projects on Central
San-owned facilities.These projects are managed by Central San staff and funded by Central San.
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Figure 8.3 Sewer Construction
DesignProject Capital Project
Capacity,
Prioritization 4L Planning Development Construction
Figure 8.4 Capacity Enhancement Process
Refer to Element 5—Design Performance Provisions,WDR Item A and B,for information on Central San's
Design and Construction Process for Capital Projects.
WDR ITEM D:
CAPACITY ENHANCEMENT SCHEDULE
Capacity related projects are phased according to simulated SSO predictions using Central San design
event criteria with future flow predictions. Refer to Table 8.1 for the current schedule and estimated
budget allocation for the identified capacity improvement projects.
PROGRAM SCHEDULE AND FUNDING
Based on analysis of historical SSO data and InfoMastere projections, Central San's current collection
system priorities are focused towards replacing small diameter vitrified clay pipe (VCP). Criteria for
selection of these pipes are presented in Element 4.
Timing and budget estimates for all collection system projects are subject to change, due to potential
additional information becoming available that may influence the need and scope of each project, such
as new condition assessment data and/or flow monitoring data, as well as potential changes to Collection
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System infrastructure priorities. A schedule and budget estimate for Central San capacity improvement
projects is provided below in Table 8.1.
Table 8.1 Capacity Project Schedule and Funding
Allocation*Project ID Scheduled Estimated
Gravity System
LAF-3 2020-2022 $480,000
MOR-1 2020-2022 $670,000
MAR-2 2020-2022 $650,000
WCK-3 2020-2022 $2,100,000
LAF-4 2023-2025 $1,900,000
PLH-2 2023-2025 $1,300,000
WCK-1 2024-2026 $1,150,000
WCK-5 2024-2026 $760,000
MAR-1 2025-2027 $780,000
ORD-2 2025-2027 $520,000
LAF-2 2025-2027 $550,000
MOR-2 2028-2030 $240,000
ORD-1 2029-2031 $760,000
LAF-1 2030-2032 $170,000
LAF-5 2031-2033 $110,000
WCK-2 2032-2034 $190,000
WCK-4 2033-2035 $480,000
PLH-1 2034-2036 $10,000
PLH-3 2034-2036 $90,000
PLH-4 2035-2037 $1,200,000
*Costs are present value,developed in Central San's 2017
CWMP
BASIS OF COST ESTIMATES
Cost estimates were prepared to guide project evaluation and implementation and establish CIP budgets.
Cost estimates were developed from several sources with bid tabulations, cost curves, and unit costs
obtained from previous studies. Actual project costs will depend on labor and material costs at the time
of bidding, competitive market conditions, the final project scope, and detailed utility and topography
surveys.
ADDITIONAL INFORMATION
Refer to Element 4 and centralsan.org for additional information on the CIP.
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SSMP ELEMENT 9:
MONITORING, PROGRAM M• •
WDR REQUISITES
D.13. (ix)Monitoring, Measurement, and Program Modifications: The Enrollee shall:
(a) Maintain relevant information that can be used to establish and prioritize appropriate SSMP
activities;
(b) Monitor the implementation and, where appropriate, measure the effectiveness of each element of
the SSMP;
(c) Assess the success of the preventative maintenance program;
(d) Update program elements, as appropriate, based on monitoring or performance evaluations;and
(e) Identify and illustrate SSO trends, including frequency, location, and volume.
CENTRAL SAN COMPLIANCE
GENERAL
The Planning and Applied Research workgroup, within the Engineering and Technical Services
Department, is responsible for updating and reviewing the SSMP. Engineering staff have ongoing
communications with CSO staff to review the SSMP effectiveness and identify areas of improvement and
change.
Central San has an ongoing commitment to ensure staff are kept well-informed with changes in the
regulatory environment and the latest developments in the wastewater industry. Central San staff are
actively engaged in professional industry organizations, including CWEA, BACWA, CASA, and WEF. In
addition to Central San's continuous improvement approach to maintaining the collection system, the
performance of the collection system is presented annually to Central San's Board of Directors.
Central San's new Capital Planning software tool(InfoAsset Planner)is periodically updated with the latest
CMMS, CCTV, and hydraulic data to support proactive decision making and objective prioritization of
Capital Project needs.
Meetings and workshops with all pertinent staff are undertaken to revise the SSMP as necessary and to
obtain consensus on those changes. External review by a consultant or another wastewater agency could
occur if staff deems necessary or helpful.
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WDR ITEM A:
MAINTAIN RELEVANT INFORMATION TO PRIORITIZE SSMP ACTIVITIES
APPROACH
CSO Supervisors meet bi-monthly to:
• Review operational performance of the collection system, including QA/QC results
• Plan ahead for coordination with construction projects or other anticipated field activities
• To debrief any SSO and/or stoppages, incidences, including causes and mitigation
• Prioritize work
Pertinent metrics associated with the performance of the collection system are collated and posted at
CSO on a monthly basis to identify trends and overall performance of the collection system.These metrics
are also presented and discussed during the crew's monthly meetings,which all CSO attend.
AVAILABLE DATA
Central San tracks the following metrics on a monthly and annual basis:
• Number of overflows
• Cause of overflows
• Volume of overflows by SWRCB category
• Location of overflows
• Amount of overflow liquid recovered
• Pipe size and pipe material
• Number of overflows per 100 miles
• Miles of pipe cleaned
• Miles of pipe CCTV'd
• Number of QA/QC checks completed on cleaned pipe
• QA/QC pass rate for cleaned pipe
• Number of spot repairs completed
• Number of work orders completed
• Number of Underground Service Alerts completed
• Number of customer satisfaction surveys completed for emergency calls
• Average customer service rating
• Average response time to overflows
In addition, Central San participates in the SWRCB's online self-monitoring and reporting system,
commonly referred to as CIWQS. This online data platform tracks information about collection system
performance for agencies within the state of California.
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WDR ITEM B:
MONITOR IMPLEMENTATION AND MEASURE EFFECTIVENESS OF EACH
ELEMENT OF THE SSMP
APPROACH
Central San has been monitoring the effectiveness of how it manages its collection system
infrastructure for decades. Central San continually reviews and optimizes how it manages the
infrastructure.
Table 9.1 below summarizes the performance indicators Central San uses for tracking the
effectiveness of each of its SSMP Elements.
Table 9.1 Performance Indicator Summary
PurposeSSIVIP Element Summary of Element
Goals Establish priorities of Enrollee Annual review of goals based upon results of
and provide focus for Enrollee performance evaluations
staff
Organization Document organization of Review of Organization Chart and all contact information,
Enrollee staff and chain of making any changes identified
command/communication for SSO
response
Legal Authority Ensure the Enrollee has Annual review of codes and/or ordinances for revisions,
sufficient legal authority to including schedule for identified updates
properly maintain and protect the
integrity of the system
Operations and Minimize blockages and SSOs 9 Total number and volume of SSOs
Maintenance by properly operating and • Number of repeat SSOs(from same location a
Program maintaining the system any previous SSO)
• Total volume spilled
• Total amount recovered
• Total amount estimated to reach surface waters
• Percent reaching surface water
• Number of pipe failures
• Total length of pipe CCTV'd '
• Total length of pipe cleaned
• Total number of spot repairs
• Total length of pipe repaired or replaced
Design&Performance Ensure new facilities are Annual review of new technologies and materials for
Provisions properly designed and constructed collection systems assets
Overflow Emergency Provide timely and effective 9 Average response time from call to arrival
Response Plan(OERP) response to SSO emergencies and . Percent of total SSO volume contained or
comply with regulatory reporting returned to sewer
requirements
Fats,Oils& Minimize blockages and 0 Number of blockages due to FOG
Grease(FOG)Control overflows due to FOG • Number of SSOs due to FOG
Program . Number of FOG-producing facilities inspected
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Table 9.1 continued
PurposeSSIVIP Element Summary of Element
System Evaluation & Evaluate portions of sewer system Periodic large-scale flow monitoring and system capacity
Capacity Assurance that are capacity deficient and analysis
Plan implement measures to mitigate
deficiencies
Monitoring, Evaluate effectiveness of • Prepare and update performance results in
Measurement& SSMP, keep SSMP up-to-date, and Elements 4,6&7
Program identify necessary changes to . Review and update callout forms as needed
Modifications SSMP Elements . Conduct annual review of CIWQS data
Program Audits Formally identify SSMP Date of completion of last annual audit
effectiveness, limitations,and
necessary changes on an annual
basis
Communication Communicate with the public and Ongoing review of public outreach activities
Program satellite agencies
Ongoing review of communication and collaboration with
satellite and neighboring agencies
WDR ITEM C:
ASSESS SUCCESS OF PREVENTATIVE MAINTENANCE PROGRAM
OVERVIEW
Central San's continued success in reducing SSOs is best captured in Figure 9.1 below, which illustrates
the annual SSO rate for the past 18 years.The figure illustrates the significant success Central San achieved
in reducing SSOs in the early years of the new millennium, due to substantial investment in sewer
renovation projects. Following this success is a trend of diminishing returns, even though Central San has
continued to improve the practice of how it manages the collection system infrastructure and continues
to implement new tools and initiatives.This point of diminishing returns is characteristic of managing any
engineered asset and is not unlike the diminishing returns on investment for Water Resource Recovery
Facilities, in terms of water quality improvement per dollar invested.That aside, Central San is committed
to significantly increasing its investment in sewer renovation projects in the coming years to ensure its
SSO trends continue to diminish. Please refer to Element 4 for more information.
Table 9.2 Annual SSO Statistics
CY 2017 CY 2018 CY 20192020 CY 2021
Number of Dry Weather SSO's (occurring May-
Oct) 12 15 11 12 12
Number of Wet Weather SSO's (occurring Nov-
April) 26 13 11 12 14
Total Number of SSO's 38 28 22 24 26
Number of SSO's per 100 miles of sewer 2.5 1.85 1.43 1.56 1.69
Number of SSO's<100 gallons 25 20 8 14 15
Number of SSO's 100 to 999 gallons 9 7 12 5 10
Number of SSO's 1,000 to 9,999 gallons 2 1 2 3 1
Number of SSO's> 10,000 gallons 2 0 0 2 0
Total Volume of SSO's (1,000 gallons) 330.3 5.87 12.95 49.09 6.81
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Table 9.2 Continued
Total Volume Recovered (1,000 gallons) 1.6 2.94 2.06 23.65 2.33
Net Volume of SSO's (total minus recovered -
1,000 gallons) 328.7 2.93 10.89 25.44 4.48
Volume not recovered 99.5% 49.9% 84.1% 51.8% 65.8%
SSO's caused by:
Roots 26 14 14 18 23
Grease 2 3 3 3 1
Debris 0 0 0 0 0
Pipe Failure 0 1 1 0 0
Pumping Station Failure 0 0 0 0 1
Capacity- limited pipe segments, no debris 0 0 0 0 0
Other 10 4 4 3 1
Number of locations with more than one SSO in
the past year 0 0 0 0 0
Average Response Time (minutes) -during
business hours 36.5 32 29 32 28.5
Average Response Time (minutes) -after business
hours 4n 75 33 36 33 33
NUMBER OF OVERFLOWS
180-
162
160 143 135
140-1 ' 123
120 107
100 81 86
�.
80 3
3
60 e = - 43 49 48 49 43 40
40 37 38
g' ' 28 22 24 26
20 -_ zwop.,— _
0
1999 2000'01 '02 '03 '04 '05 '06 '07 '08 '09 '10 '11 '12 '13 '14 '15 '16 '17 '18 119 120 121
Figure 9.1 Central San's Annual SSO Trends
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STATEWIDE AND REGIONAL COMPARISON
Central San's performance compares very favorably to the state and our region (Region 2), both in terms
of SSOs per 100 miles of sewer owned, and the average volume spilt per SSO. Refer to Table 9.2 below for
calendar year 2016.
Table 9.3 Comparative Data from CIWQS-Calendar Years 2019-2021
Comparative Data from CIWQS-Calendar Year 2019
Number of Overflows 2,989 883 22
Total Volume-Gallons 16,610,619 7,897,488 12,947
Overflows per 100 miles 3.87 5.69Wp' 1.43
Average Volume per SSO-Gallons 5,557 8,943 588
Comparative Data from CIWQS-Calendar Year 2020
SRegion 2 Central San
tatewide
of Overflows 2,513 716 24
Total Volume-Gallons 20,773,865 1,217,746 49,089
Overflows per 100 miles 3.09 3.51 1.56
Average Volume per SSO-Gallons 8,267 1,701 2,045
Comparative Data from CIWQS-Calendar Year 2021
SRegion 2 Central San
tatewide
of Overflows 2,847 838 26
Total Volume-Gallons 30,237,266 15,891,067 6,811
Overflows per 100 miles 3.90 5.29 1.69
Average Volume per SSO-Gallons 10,621 18,963 262
WDR ITEM D:
UPDATE PROGRAM ELEMENTS BASED ON MONITORING OR PERFORMANCE
EVALUATIONS
APPROACH
In recent years, Central San has made significant investments to further optimize how it manages its
infrastructure, identify and plan for future needs to support its Strategic Plan goals, and further reduce
the occurrence of SSOs (Table 9.3). Refer to Element 4 for further information on the above initiatives.
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Table 9.4 Central San Program Element Updates
Initiative Element Updated
Comprehensive Wastewater Master Plan 4—Operations&Maintenance Program
8—System Evaluation &Capacity Assurance Plan
Tablets for Field Crews 4—Operations&Maintenance Program
Acoustic Rapid Sewer Inspection Equipment 4—Operations&Maintenance Program
New Enterprise GIS System 4—Operations&Maintenance Program
New CMMS Software System 4—Operations&Maintenance Program
New CCTV Software System 4—Operations&Maintenance Program
New Analytical Capital Planning Software System 4—Operations&Maintenance Program
Standard Specifications Amendment 5—Design &Performance Provisions
Sanitary Sewer Overflow and Backup Response Plan Update 6—Overflow Emergency Response Plan
Large-scale Sewer Flow Monitoring 8—System Evaluation &Capacity Assurance Plan
New Hydraulically Dynamic Sewer Model 8—System Evaluation &Capacity Assurance Plan
WDR ITEM E:
IDENTIFYAND ILLUSTRATE SSO TRENDS, INCLUDING FREQUENCY, LOCATION
AND VOLUME
APPROACH
To reduce the likelihood of future SSOs, Central San analyses data to identify trends, which are then
leveraged to revise cleaning frequencies and strategically plan for Capital Projects. The following charts
illustrate trends for various data associated with SSOs.
DATA TRENDS 2017 - 2021
SSOs BY SYSTEM
60
50
40
30
20
10
0
2017 2018 2019 2020 2021
Gravity System f Force Mains --*—Pump Stations
Figure 9.2 SSOs Per Year by System
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SSOs BY CAUSE
30
25
20
15
10
5
0
2017 2018 2019 2020 2021
t Roots --*--Other tGrease
—4P--Pipe Failure —*--Capacity --S--Pump Station Failure
Figure 9.3 SSOs Per Year by Cause
SSOs BY VOLUME
30.00
25.00
20.00
15.00
10.00
5.00
0.00
2017 2018 2019 2020 2021
t<10 Gal. t10-100 Gal. 1100-1,000 Gal. —0-->1,000 Gal.
Figure 9.4 SSOs by Volume
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SSOs BY LOCATION
14.00
12.00
10.00
8.00
6.00
4.00
2.00
0.00
2017 2018 2019 2020 2021
■Alamo ■Danville ■Lafayette ■Martinez ■Moraga
■Orinda ■Pleasant Hill ■San Ramon ■Walnut Creek
Figure 9.5 SSOs by Location
SSOs BY PIPE MATERIAL
25.00
20.00
15.00
10.00
5.00
0.00
2017 2018 2019 2020 2021
--*--ABS CACP tCIP tCIPP
tCMLC DIP --O--HDPE Manhole
--*--PVC —0--RCP --*--VCP --O--Various
Figure 9.6 SSOs by Pipe Material
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SSOs BY PIPE DIAMETER
25.00
20.00
15.00
10.00
5.00
0.00
2017 2018 2019 2020 2021
t6" t8" t10" X12" ---W 18" 30"
Figure 9.7 SSOs by Pipe Diameter
DATA COMMENTARY
GENERAL
Overall, Central San continues to consistently reduce the number of SSOs that occur within its service
area. During the last five years, SSOs have typically been caused by roots. Moreover, most SSOs occur on
six-and eight-inch diameter VCP,within the communities of Lafayette, Orinda, and Walnut Creek.
In alignment with the trends identified in the Central San data above,the pipe renovation work completed
within the last five years was primarily focused on six- and eight-inch diameter VCPs, and within
communities that have the highest SSO rates. In total, over 35 miles of sewer pipe was renovated in the
last five years.
Central San specifications no longer permit the installation of six-inch gravity pipes. This is largely due to
the maintenance issues associated with small diameter pipes and their susceptibility to blockage. For new
public sewers, Central San engineers carefully specify pipe materials and construction techniques to
optimize the long-term performance of the sewers. Moreover, Central San engineers carefully design
alignments to minimize future maintenance challenges wherever possible.Capital Projects are developed
as a team effort between Engineering and CSO staff.
Central San's robust FOG Inspection program continues to ensure that FOG-related SSOs are kept to a
minimum.
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STRATEGIC SSO REDUCTION APPROACH
STRATEGY TO FURTHER REDUCE SSOs
Central San uses a multi-faceted approach to reduce SSOs continuously. This approach leverages
teamwork and technology.
Teamwork
O&M staff debriefs after every SSO stoppage to review causes and, if appropriate, revise cleaning
frequencies. When pipe repair or replacement is needed, it is either undertaken by CSO staff or
undertaken with a Central San contractor, depending on the scope and urgency of the work. Central San
engineers design and manage the construction of collection system renovation projects.This expertise is
leveraged to ensure the best engineering solution is provided for each situation.
Technology
Central San has been an early implementer of numerous collection system technologies over the years,
including:
• Sonar Rapid Assessment Tools
• Remote Manhole Surcharge Monitoring
• HzS Monitoring and Controls
• CCTV Tools, Software, and Scoring Methodology
• Tablets and Smart Phones
• Trenchless Construction Techniques
• Innovative Cleaning Methods for Easements
• Analytical Capital Planning Software
WAY FORWARD
Appreciating the primary cause of SSOs for Central San is roots in six- and eight-inch VCP, Central San is
undertaking the following initiatives in the coming years:
• Continue rapid assessment tools to reduce set up times for pipe inspections,thus optimizing
staff time in the field;
• Accelerating near-term renovation schedules for six-and eight-inch VCP;
• Using analytical Capital Planning software to objectively identify candidate pipes using a risk-
based assessment; and
• Piloting root foaming technology.
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PROGRAMSSMP ELEMENT 10:
SSMP
WDR REQUISITES
D.13. (x)SSMP Program Audits: As part of the SSMP, the Enrollee shall conduct periodic internal audits,
appropriate to the size of the system and the number of SSOs. At a minimum, these audits must occur
every two 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 (D.13.), including identification of any deficiencies in the SSMP and steps to correct them.
CENTRAL SAN COMPLIANCE
GENERAL
The purpose of the audit is to evaluate the effectiveness of Central San's SSMP. The audit consists of an
audit worksheet, provided in the next section of this document. Data trends are reviewed to determine
the effectiveness of the SSMP and collection system programs. Additions or improvements to collection
system operations are documented, as well as any planned additions or improvements.
WDR ITEM:
ANNUAL AUDIT TEMPLATE
Table 10.1 Central San SSMP Annual Audit Report
Central Contra Costa Sanitary District
Sewer System Management Plan Annual Audit Report
Date:
The purpose of the SSMP Audit is to evaluate the effectiveness of the Central San's (District's)
SSMP and to identify any needed improvements to assure the effective operation of the sanitary
sewer collection system to achieve the goals of the SSMP
Audit Team: Paul Seitz, P.E. — Collection System Operations Division Manager
Jason De Groot, P.E. — Collection System Operations Senior Engineer
Steve Sauter—Superintendent Operations and Maintenance
Directions: Please check YES or NO for each question. If NO is answered for any question,
describe the updates/changes needed and the timeline to complete those changes.
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YES NO
ELEMENT 1 - GOALS
A. Have there been any changes to the system that require updates to ❑ ❑
the System Overview summary in the Introduction?
B. Is Figure 1.1, Service Area and Geographic Features up-to-date? ❑ ❑
C. Have the boundaries of the District's service area changed since the ❑ ❑
last Audit? If so, describe the changes.
D. Have there been any changes in the regulations that should be ❑ ❑
identified and described in the Introduction?
E. Are the goals stated in Element 1 still appropriate and accurate? ❑ ❑
Discussion:
ELEMENT 2 - ORGANIZATION
A. Is the List of District Staff Responsible for SSMP, Table 2.2 current? ❑ ❑
B. Is the Sanitary Sewer Overflow Responder List current? ❑ ❑
C. Is Figure 2.1 of the SSMP,the District Organization Chart, current? ❑ ❑
D. Are the position descriptions an accurate definition of staff ❑ ❑
responsibilities?
E. Is the Table for the Chain of Command for Reporting and ❑ ❑
Responding to SSO's section accurate and up-to-date?
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F. Is the list of LRO officials and data submitters in the CWIQS System ❑ ❑
current? Are all legally responsible officials and data submitters
identified in the SSMP? Have all terminated officials
been removed from the CIWQS System on the required timeline as
required by the GWDR?
Discussion:
ELEMENT 3 -LEGAL AUTHORITY
Does the SSMP contain current references to the District Code and the City of Concord Municipal
Code documenting the Districts' legal authority to:
A. Prevent illicit discharges? ❑ ❑
B. Require proper design and construction of sewers and connections? ❑ ❑
C. Ensure access for maintenance, inspection, or repairs for portions of ❑ ❑
the lateral owned or maintained by the District?
D. Limit discharges of fats, oils, and grease? ❑ ❑
E. Enforce any violation of its sewer ordinances? ❑ ❑
F. Were any changes or modifications made in the past year to ❑ ❑
District Sewer Ordinances, Regulations, or Standards? If so,please
state below.
G. Are the sewer service charge provisions current and provide the ❑ ❑
authority for full funding of the sanitary sewer operations?
H. Has there been documented and regular communications with ❑ ❑
other agencies such as City of Concord and other cities in the
District's service area in the past year? If so, are these meetings
and communications documented appropriately?
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I. Are all report forms used during sanitary sewer system cleaning and
CCTV inspection current or require changes to mirror current
operations? ❑ ❑
J. Have the Annual Pumping Station Inspections been conducted and
are necessary improvements scheduled and being implemented?
Discussion:
ELEMENT 4- OPERATIONS AND MAINTENANCE PROGRAM
Collection System Maps
A. Does the SSMP reference the current process and procedures for ❑ ❑
maintaining the District's wastewater collection system maps?
B. Are the District's collection system maps complete, current, and ❑ ❑
sufficiently detailed?
C. Are storm drainage facilities identified on the collection system maps? ❑ ❑
If not, are SSO responders able to determine locations of storm
drainage inlets and pipes for possible discharge to waters of the state?
Prioritized Preventive Maintenance
D. Does the SSMP describe current preventive maintenance activities ❑ ❑
and the system for prioritizing the cleaning of sewers?
E. Based upon information in the Annual SSO Report, are the District's Ll El
maintenance activities sufficient and effective in
minimizing SSOs and blockages?
Scheduled Inspections and Condition Assessments
F. Is there an ongoing condition assessment program sufficient to
develop a capital improvement plan addressing the proper ❑ ❑
management and protection of infrastructure assets?Are the
current components of this program documented in the SSMP?
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G. Does the SSMP contain a prioritized capital improvement plan for
future rehabilitation and replacement of the sanitary sewer system ❑ ❑
for the next five years? Is it current?
Contingency Equipment and Replacement Inventory
H. Does the SSMP list the major equipment currently used in the ❑ ❑
operation and maintenance of the collection system and documents
the procedures for inventory management?
L Are contingency and replacement parts sufficient to respond to ❑ ❑
emergencies and properly conduct regular maintenance?
Training
J. Has all annual training been conducted as required? ❑ ❑
Outreach to Plumbers and Building Contractors
K. Does the SSMP document current outreach efforts to plumbers and El El
contractors?
Discussion:
ELEMENT 5 - DESIGN AND PERFORMANCE PROVISIONS
A. Does the SSMP reference current design and construction
standards for the installation for new sanitary sewer systems, ❑ ❑
pumping stations, and other appurtenances and for the rehabilitation
and repair of existing sanitary sewer systems?
B. Does the SSMP document current procedures and standards for
inspecting and testing the installation of new sewers, pumps, and ❑ ❑
other appurtenances and the rehabilitation and repair of existing
sewer lines? Have any changes to the standards been implemented
since the last audit?
Discussion:
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ELEMENT 6 -OVERFLOW EMERGENCY RESPONSE PLAN
A. Does the District's Sanitary Sewer Overflow and Backup Response ❑ ❑
Plan establish procedures for the emergency response, notification,
and reporting of SSOs? Have any changes in past practices been
implemented since the last audit? If so, please explain.
B. Are District staff and contractor personnel appropriately trained and ❑ ❑
verified on the procedures of the Sanitary Sewer Overflow
and Backup Response Plan?
C. Considering SSO performance data, is the Sanitary Sewer El Ll
and Backup Response Plan effective in handling SSOs to
safeguard public health and the environment?
D. Are all SSO and claims reporting forms current or do they require
revisions or additions? ❑ ❑
E. Does all SSO event recordkeeping meet the GWDR requirements?
Are all SSO event files complete and have they been certified in ❑ ❑
the CIWQS system?
F. Is all information in the CIWQS system current and correct?
Have periodic reviews of the data been made during the year to
assure compliance with GWDR? Have all Technical Report and ❑ ❑
Water Quality Sampling requirements of the GWDR been
uploaded to the CIWQS data management system?
G. Are all SSO Response Procedure Flow Charts current and have all
contact information been checked and certified correct? ❑ ❑
H. Were all large SSOs evaluated for"root cause" and did they
identify corrective actions required to assure reductions or
elimination of future SSOs? Were post SSO debriefing events ❑ ❑
held with appropriate staff and all responders?
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I. Were all Technical Reports and Water Quality Monitoring results
of SSOs greater than 50,000 gallons submitted to the CIWQS
System according to the required timeline? ❑ ❑
J. Were all No Spill Certifications provided as required by the WDR
regulations completed and certified in CIWQS? Was the Annual
Collection System Questionnaire completed? ❑ ❑
K. Are all SSO records complete and maintained for five-years from
the date of the SSO? Have all files older than five years been
disposed of according to District records management system and ❑ ❑
Regional Board requirements or directions?
L. Is staff properly trained on appropriate methods for spill volume
estimation and start time requirements for all SSOs? Has this
training been documented appropriately? ❑ ❑
Discussion:
ELEMENT 7-FATS, OILS,AND GREASE (FOG) CONTROL PROGRAM
A. Does the FOG Control Program include efforts to educate the ❑ ❑
residential customers on proper handling and disposal of FOG?
B. Does the FOG Control Program identify sections of the collection El El
subject to FOG blockages, establish a cleaning schedule,
and address source control measures to minimize these blockages?
C. Are requirements for grease removal devices,best management 11 El
(BMP), record keeping, and reporting established in the
District's FOG Control Program?
D. Does the District have sufficient legal authority to implement and ❑ ❑
enforce the FOG Control Program? Are all enforcements effective
and resulting in appropriate compliance with requirements?
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E. Is the current FOG program effective in minimizing blockages of ❑ ❑
sewer lines resulting from discharges of FOG to the system?
Discussion:
ELEMENT 8 - SYSTEM EVALUATION AND CAPACITY ASSURANCE PLAN
A. Does the District's Sanitary Sewer Master Plan evaluate
hydraulic deficiencies in the system, establish sufficient design ❑ ❑
criteria, and recommend both short and long-term capacity
enhancement, improvement projects, and schedules?
B. Does the District's Capital Improvement Plan(CIP) establish a
schedule of approximate completion dates for both short and long- ❑ ❑
term improvements, and is the schedule reviewed and updated to
reflect current budgetary capabilities and accomplishments?
Discussion:
ELEMENT 9 - MONITORING, MEASUREMENT, AND PROGRAM
MODIFICATIONS
A. Does the SSMP accurately portray the methods of tracking and ❑ ❑
reporting selected performance indicators?
B. Is the District able to sufficiently evaluate the effectiveness of the ❑ ❑
SSMP elements based on relevant information?
Discussion:
ELEMENT 10- SSMP PROGRAM AUDITS
A. Was the SSMP Audit completed, reviewed, and filed in the Appendix?
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B. Have the collection system performance results been provided to ❑ ❑
the Board of Directors and the public annually? Are the results
available on the District website?
C. Have the performance results been evaluated for specific changes to ❑ ❑
meet targeted goals for SSO reduction? Have changes in
procedures been implemented to enhance the District sanitary sewer
operations?
D. Has the Change Log been updated with all changes made to the ❑ ❑
SSMP during the past year?
E. Do District SSO performance results agree with all CIWQS ❑ ❑
information?
Discussion:
CEMENT 11 - COMMUNICATION PROGRAM
A. Does the District effectively communicate with the public and other ❑ ❑
agencies about the implementation and performance results of the
SSMP and continue to address any feedback?
B. Did the District receive and review the Annual Sewer ❑
System Report? Was the annual report uploaded to the District
Sewer Section website and added to Appendix B?
C. Did District staff conduct and document meetings with the City of Concord. ❑ ❑
Are all agreements current or are changes necessary to these agreements?
Change Log
A. Is the SSMP Change Log current and up to date?
Discussion:
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Paul Seitz, P.E. Date
Collection System Operations
Division Manager
Legally Responsible Official
Jason De Groot, P.E. Date
Senior Engineer
Steve Sauter Date
Superintendent - Operations and
Maintenance
Legally Responsible Official
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SSMP ELEMENT 11:
COMMUNICATION "PROGRAM
WDR REQUISITES
D.13. (xi) Communication Program: 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 the opportunity 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.
CENTRAL SAN COMPLIANCE
The SSMP is presented to the Central San Board of Directors for approval at a regularly scheduled Board
Meeting. The draft SSMP will be available to the public as a part of the agenda on Central San's website
(centralsan.org). While the Board considers approval of the SSMP, there will be an opportunity for the
public to comment on the document.
Central San is an active member of the communities it serves and has a comprehensive community
outreach program. Staff employ a variety of methods to communicate with and provide information to
the public. The goal of the program is to increase public awareness, understanding, and support of the
vision, mission, goals, and values of Central San. Keeping the public informed, promoting pollution
prevention, and encouraging feedback about our activities helps us to more efficiently and effectively
manage our wastewater and environmental responsibilities. Elements of our communication program in
all departments of Central San include:
PIPELINE CUSTOMER NEWSLETTER
The Pipeline is a newsletter published twice a year and mailed to
approximately 157,000 households and businesses in our service area.The ■ ■
newsletter describes how Central San protects public health and the
environment, how readers can help prevent pollution,and how their sewer
LINE
service charge fees are spent. Topics regularly include FOG; "flushable"
wipes; overflow protection devices; our Household Hazardous Waste
Collection Facility;the Pharmaceutical Disposal Program;and infrastructure
in
improvements. The work done by CSO is often highlighted as well as
publishing Central San's emergency number to help expedite reporting of �
an overflow. Along with disseminating information, the newsletter builds
f
support in our communities and maintains open communication with the
people Central San serves.
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PERMIT COUNTER
The Permit staff are available to answer questions regarding how to connect to Central San's sewer
system. The staff help issue permits and educate homeowners, builders, and plumbers on design
standards for our collection system and private laterals. Plumbers registered with our permit counter
receive updated information after every fee increase or change in design standards. Customers can also
find information for ongoing or future projects or make inquiries about their sewer lateral or nearby main
at the permit counter.
NON-DISPERSIBLES (FLUSHABLE WIPES)
With the growing problem of sewer line blockages and
possible overflows caused by so-called "flushable" wipes, W P E
diapers, and cleaners, Central San's Communication
Services group has expanded its outreach to the public with C L 0 �]
activities similar to the FOG program, including Pipeline ULUP PTES)rl
newsletter articles, social media messaging, exhibits at
environmental fairs, community events, mailers,
brochures, postings at municipal permit counters, and What cani❑ do?
public service announcement (PSA) campaigns on local Un funuwiel9. snot a game.Cli pPe,can cause sewage overflows 8 costly damige,o wur Poperty.
television channels. BUT YOU CAN HEI P PREVENT TH EM.
DOOR HANGERS
Door hangers are used to inform residents and businesses when an infrastructure replacement project
will be coming to their neighborhood. They include basic information and a phone number to call if they
have questions. Door hangers may also be placed where high amounts of grease have been found in the
adjacent sewers.These provide information on proper grease handling and disposal.
In addition, CSO staff may use a door hanger to provide information when they have responded to a
service call, so the customer knows how Central San responded to their request. Door hangers are also
used when crews notice that a home may not have an overflow protection device, instructing the
homeowner on the importance of the device and where they can be purchased.
FOG MAILERS
FOG blockages are a leading cause of sewer spills in the "```"°`c`"
United States. Communication staff distribute FOG
brochures to large apartment complexes, Chambers of p
Commerce and municipal permit counters throughout the '^ "'
services area, and areas where grease is known to
accumulate. Central San also runs a PSA on proper grease"
disposal on local television stations leading up to the holiday A9Y
season. .-
'
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CONSTRUCTION LIAISON OUTREACH
Outreach begins with a mailed notice of anticipated work anywhere from nine to twelve months in
advance of the project. These notices are followed by letters, phone calls, public meetings, and face-to-
face meetings in the months prior to the start of the project. Site visits by a Community Affairs
Representative and the Project Engineer occur prior to construction to discuss the potential impacts of a
project with affected home and business owners. These methods also provide an opportunity for
educating customers about Central San's overall activities and mission.
ENVIRONMENTAL COMPLIANCE INSPECTIONS
The Environmental Compliance workgroup also conducts site visits and inspections of businesses for
proper grease disposal or required industrial pre-treatment. In addition,they provide plan review for new
food service businesses to ensure grease traps and grease interceptors are installed per Central San
requirements. Refer to Element 7 for more information.
BOARD MEETINGS AND PUBLIC HEARINGS
We encourage the public to attend all Board meetings and public hearings to provide input on issues
important to them.
SOCIAL MEDIA AND WEBSITE
Our website (centralsan.org) provides current, detailed information on ,.
a wide variety of topics such as Central San's structure, description of •
the wastewater treatment process,education programs for children and '
adults, pollution prevention activities, Green and Integrated Pest
Management (IPM) recommendations, current construction projects,
employment opportunities, and public notices. Website viewers are
encouraged to provide feedback, and a phone number for reporting a H,•t,.,, .«<,
sewer spill is posted at the top of the homepage.
Central San also uses social media (Facebook,Twitter,YouTube, and a blog) to share similar information,
as well as pollution prevention tips and timely announcements of interest to the community and
customers.
MEDIA RELEASES
Media releases about Central San activities are sent to local media outlets in our service area to help keep
the public informed about major projects, water quality issues, awards, or other items of interest.
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Page 123 of 163
STUDENT EDUCATION PROGRAMS
Central San maintains the most active student programming of any wastewater district in the San
Francisco East Bay.
Central San's Pipe Protectors program is presented each year to thousands of
PIPE PROTECTORS CREW
elementary school students in grades K-5 throughout Central San's service area.They
program includes several 60-minute classroom lessons with various activities that
teach how our complex system transports,cleans,and tests our wastewater.The goal
of all of our Pipe Protectors lessons is to help students consider what happens to our
dirty water after it goes down the drain. The program is designed to leave students
with a better understanding that the stuff we put in our water(and down our drains)
does not disappear.
Central San also partners with our local water district, Contra Costa Water District, to bring the "Go with
the Flow" assembly into elementary schools. This interactive show tells the story of where water comes
from and where it goes after usage. Thousands of students each year learn about the sources of their
fresh water, how their water is treated before entering their homes, different strategies for conserving
water usage, what happens to their dirty water after it goes down the drain, and why flushing wipes and
other pollutants are harmful to the sewer system. This focus on a "One Water" message has been a
wonderful opportunity to collaborate with the neighboring water agency on local education
programming.
The Sewer Science program is presented each year to hundreds of high school students in Central San's
service area. It consists of a five-day laboratory experience that integrates biology,chemistry, physics,and
math with water quality and pollution prevention concepts. Wrap-up sessions link the lessons from the
lab to what Central San does for the community, and how students can take actionable steps to help
protect the environment.Water sector career opportunities are also discussed.
Central San is also a major sponsor of the Marine Science Institute's Discovery Voyage Program. This
science program targets 5th grade students and takes them aboard a research vessel, the RV Brownlee,
which was custom built to provide a safe floating laboratory for students. On this three-and-a-half-hour
excursion on the Sacramento-San Joaquin Delta, an annual average of 4,000 students learn about the
water in the Delta,its aquatic life,water conservation,the effects of pollution,and the work of wastewater
agencies to prevent that pollution. In FY 2020-21, Central San reached over 21,500 students through our
various education programs.
CENTRAL SAN ACADEMY
Participants in the Central San Academy learn about almost everything ce
Central San does, including how engineering, chemistry, and technology
is used to turn waste into worth by cleaning their community's water and
returning it to their customers as recycled water. The curriculum is
interactive and informative and includes a tour of the treatment plant,
laboratory, recycled water fill station, and household hazardous waste
collection facility. _ SA, AC t.
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This award-winning program (California Special Districts Association honored Central San with the 2016
Exceptional Public Outreach and Advocacy Award) is offered free of charge to all customers. It is a rare
glimpse into how used water gains new life.
ENVIRONMENTAL AND COMMUNITY FAIRS
The Communication Services staff take part in several community fairs and special celebrations such as
Earth Day events. A staffed booth helps promote public awareness of wastewater issues, pollution
prevention tips, and other topics important to Central San's wastewater conveyance and treatment.
TREATMENT PLANT TOURS
Central San's treatment plant tour program shows employees,
students, and members of the public the critical role their
wastewater treatment plant provides in the community,
particularly as it relates to protecting waterways. Each year,
hundreds of people tour the treatment plant.
To maintain our ability to educate customers on how we collect and treat wastewater during the
pandemic, we developed a virtual experience. Central San's 75th Anniversary Experience features an
interactive 360-degree tour of the wastewater treatment plant, videos, photo galleries, fun facts, and a
learning hub with hands-on science activities for kids. You will also find information on how to protect
your pipes, safely dispose of household hazardous waste, and get free recycled water for your garden.
Additionally, we schedule live events with a guided tour and interactive Q&A session.
SPEAKERS BUREAU
Central San's Speakers Bureau provides speakers at no cost to local organizations. Topics covered range
from how the wastewater system works to pollution prevention. The Speakers Bureau is promoted on
Central San's website, Pipeline newsletter, press releases, and social media. In FY 2020-21, Central San
presented to over 700 attendees.
HOUSEHOLD HAZARDOUS WASTE COLLECTION
Central San's household hazardous waste facility collects over 4 ,, _
two million pounds of products annually, that may otherwise find
their way into the sewer and harm the environment. Residents within
Central San's service area can drop off potentially harmful substances - •-
for free, such as paints and pesticides, pool chemicals, and cleaning
products. Refer to centralsan.org for more information.
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TRIBUTARY SYSTEMS
The collection systems for the Cities of Concord and Clayton are
tributaries to Central San's collections stem. There are regular
Y
communications between Central San and each city's
management and staff on joint projects and other topics of
importance. Central San provides environmental compliance IF
inspections for permitted businesses in Concord and Clayton. „p
Residents from these communities also participate in the Central
San's pollution prevention, student education, household F
Cityofc�hchazardous waste, pharmaceutical collection, and FOG programs.
Refer to Element 3—Legal Authority for additional information.
11-6
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CENTRAL CONTRA COSTA SANITARY DISTRICT
W DI D#: 2SS010105
June 7, 2022
Page 128 of 163
Central Contra Costa Sanitary District (Central San)
Sewer System Management Plan Audit Report
Date: June 7th, 2022
The purpose of the SSMPAudit is to evaluate the effectiveness of the Central San's (District's)
SSMP and to identify any needed improvements to assure the effective operation of the sanitary
sewer collection system to achieve the goals of the SSMP
Audit Team: Paul Seitz, P.E. — Collection System Operations Division Manager
Jason De Groot, P.E. — Collection System Operations Senior Engineer
Steve Sauter—Field Operations Superintendent
Directions: Please check YES or NO for each question. If NO is answered for any question,
describe the updates/changes needed and the timeline to complete those changes.
YES NO
ELEMENT 1 - GOALS
A. Have there been any changes to the system that require updates to ❑
the System Overview summary in the Introduction?
• There have not been any significant changes to the System
Overview Summary.
• The System Overview Summary is on pages 1-1 thru 1-5 and
is up to date.
• The four tables listed below are included in the SSMP. These
tables are up to date.
o Table 1.1 Service Area Infrastructure Estimates
o Table 1.2 Inventory of Sewer Lines by Size
o Table 1.3 Inventory of Sewer Lines by Material Type
o Table 1.4 Inventory of Sewer Line by Pipe Age
B. Is Figure 1.1, Service Area and Geographic Features up to date? ® ❑
• Yes, shown on page 1-2— Service Area map is up to date
C. Have the boundaries of the District's service area changed since the ❑
last Audit? If so, describe the changes.
• No, shown on page 1-2—The service area has not changed
D. Have there been any changes in the regulations that should be ❑ ❑
identified and described in the Introduction?
• No, there have been no regulatory changes since the SSMP
was revised on March 12, 2021
o Currently there are discussions to modify the language
in the WDR. It is anticipated that the revisions will be
completed in calendar year 2022. Once the revisions
are finalized, we will update our SSMP per the
revisions to the WDR.
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E. Are the goals stated in Element 1 still appropriate and accurate? ® ❑
• Yes, shown on page 1-6—The goals shown are still
appropriate and accurate
Discussion:
Element I —Goals, provides accurate and up to date information for the District and its collection
system. The goals for the District are to provide adequate capacity to convey peak flows,
minimize the frequency of sanitary sewer overflows, and mitigate the impact of sanitary sewer
overflows. The System Overview Summary accurately shows that the District, as well as the
Collections System Operations Department, are committed to properly managing, operating, and
maintaining the collection system to prevent and mitigate SSO's
In addition, as mentioned above, the SWRQCB is currently drafting revisions to the existing
Waste Discharge Requirements (WDR). The revised WDR is expected to be issued in calendar
year 2022. Once the revisions have been issued, the District will revise its SSMP to incorporate
the revisions from the revised WDR.
ELEMENT 2 - ORGANIZATION
A. Is the List of District Staff Responsible for SSMP, Table 2.2 current? ® ❑
• Yes, shown on page 2-2 - the District staff responsible for the
SSMP is current
B. Is the Sanitary Sewer Overflow Responder List current? ❑ ❑
• Yes, the Sanitary Sewer Overflow Responder List is correct
and up to date except for title changes which will be updated
in the November 22 SSMP Update. The list is shown on page
2-5, Table 2.3
C. Is Figure 2.1 of the SSMP,the District Organization Chart, current? ❑
« No, The Deputy General Manager Title has been changed to
Director of Operations along with several other titles. This
will be reflected in the November 2022 SSMP Update.
• Names of employees are not shown on organizational chart,
only number of employees in each section. Due to training
purposes staff regularly rotates through the different sections.
D. Are the position descriptions an accurate definition of staff ❑ ❑
responsibilities?
• Yes, shown on page 2-3 —Position descriptions are accurate,
however, the title of Deputy General Manager has been
changed to Director of Operations as well as several other
titles..
E. Is the Table for the Chain of Command for Reporting SSO's section ❑ ❑
accurate and up to date?
o Yes, the Chain of Command for Reporting is accurate
and up to date. It is shown on page 2-5, Table 2.4
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F. Is the list of LRO officials and data submitters in the CWIQS System ® ❑
current? Are all legally responsible officials and data submitters
identified in the SSMP? Have all terminated officials
been removed from the CIWQS System on the required timeline as
required by the GWDR.
• Yes, the LRO's and data submitters in CIWQS are accurate
and up to date.
• Yes, all LRO's and data submitters are identified in the
SSMP. The LRO's are shown on page 2-1, Table 2.1
• Yes, the LRO's that are no longer employed with the
District have a "Relationship End Date" in CIWQS.
Discussion:
Element 2—Organization, accurately reflects the current information for the District. The
locations for key tables and figures are:
• Legally Responsible Officials—page 2-1, Table 2.1
• Staff Contacts Responsible for SSMP—page 2-2, Table 2.2
• Sewer Overflow Responder List—page 2-5, Table 2.3
• Chain of Command for Reporting—page 2-5, Table 2.4
• CSO Organizational Chart—page 2-6, Figure 2.1
As shown on the above-mentioned charts,the District provides redundancy for critical tasks.
There are six LRO's and seven Sewer Overflow Responders that can dispatch crews as needed for
the task. This redundancy provides continuous oversight for the collection system if an
emergency arises.
ELEMENT 3—LEGAL AUTHORITY
Does the SSMP contain current references to the District Code documenting the Districts' legal
authority to:
A. Prevent illicit discharges? ® ❑
• Yes, shown on pages 3-3 thru 3-5
B. Require proper design and construction of sewers and connections ❑ ❑
• Yes, shown on page 3-5
C. Ensure access for maintenance, inspection, or repairs for portions of ❑ ❑
the lateral owned or maintained by the District?
• Yes, shown on page 3-6. The District does not own or
maintain any portion of the private lateral including the
connection to the main.
• Access to the public main and appurtenances are shown in the
District code, Section 10.12.080—Right of Entry
D. Limit discharges of fats, oils and grease? ❑ ❑
• Yes, shown on pages 3-6 and 3-7
E. Enforce any violation of its sewer ordinances? ❑ ❑
• Yes, shown on page 3-7
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F. Were any changes or modifications made in the past year to ❑ ❑
District Sewer Ordinances, Regulations or standards? If so, please
state below.
• No, there were no changes to sewer ordinances, regulations or
standards in the past year
G. Are the sewer service charge provisions current and provide the ❑ ❑
authority for full funding of the sanitary sewer operations?
• Yes, sewer service charge does provide full funding for the
sanitary sewer operations.
• In June 2014, Central San hired Raftelis Financial
Consultants, Inc. to asses and evaluate the District's existing
wastewater rates. The study can be found at
www.centralsan.org.
• The current residential rate for FY 2020-21 is $629 per year
for a single-family residence and $596 per year for a multi-
family residential unit. For FY 2021-22, the residential rate
will be $660 and the multi-family residential rate will be
$625.
H. Has there been documented and regular communications with ® ❑
other agencies and other cities in the District's service area in the
past year? If so, are these meetings and communications
documented appropriately?
• Yes, the Field Operations Superintendent and Construction
Supervisor have constant communication with the cities,
counties and towns within our service area.
• Coordination consists of acquiring encroachment permits for
sewer construction, attending pre-construction meetings,
mutual inspection of facilities and planning for future paving
projects that will impact the District's facilities.
I. Are all report forms used during sanitary sewer system cleaning and
CCTV inspection current or require changes to mirror current
operations? ❑ ❑
• Yes, all forms used for cleaning and televising are current.
They were updated when Cityworks Computerized
Maintenance Management System (CMMS)was installed in
January 2017
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J. Have the Annual Pump Station Inspections been conducted and
are necessary improvements scheduled and being implemented?
1. Annual inspections ® ❑
a. Generator and transfer switch inspections/servicing -
complete
b. Annual UST inspection and testing - complete
c. PM PS Telemetry/UPS battery—complete
d. PS Emergency Lights - complete
e. Safety inspections—scheduled to be completed by the
end of September
f. MCC/IR inspections—partially complete, remaining
stations scheduled for October
2. PS CIP work over the next few years is based on the condition
assessment that were part of the master plan and current
operational and maintenance needs. See the following TM's:
a. TM 14A Pump Station Condition assessment
b. TM 14B Pump Station Force Main Condition
assessment
c. TM 14C Large diameter pipe management
d. TM 14 CS Asset management plan
e. TM CS 18 Optimization
f. TM CS 22 CIP draft
3. Several major PS upgrades are included in the current CIP:
a. Martinez, Fairview, Maltby, Orinda Crossroads,
Moraga, Flushkleen
4. Other O&M needs are covered by Pump Stations and Treatment
Plant maintenance staff as part of routine preventative
maintenance and corrective work throughout the year.
Discussion:
Element 3 - Legal Authority is effective in outlining the ordinances and regulations that provide
the District legal authority to prevent illicit discharges, to provide proper design and construction
standards, to ensure access to facilities, to limit the discharges of FOG and to enforce the
violations of sewer ordinances.
ELEMENT 4—OPERATIONS AND MAINTENANCE
Collection System Maps
A. Does the SSMP reference the current process and procedures for ® ❑
maintaining the District's wastewater collection system maps?
Yes, shown on pages 4-2 thru 4-5 —The SSMP references The
District's current practice for updating maps
B. Are the District's collection system maps complete, current and ® ❑
sufficiently detailed?
• Yes, shown on pages 4-2 thru 4-5 the collection system maps
are complete, current and sufficiently detailed
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C. Are storm drainage facilities identified on the collection system ® ❑
maps? If not, are SSO responders able to determine locations of
storm drainage inlets and pipes for possible discharge to waters of
the state?
• Yes, the available data is shown on page 4-3. The utility
information includes potable and recycled water, storm water,
and power
Prioritized Preventive Maintenance
D. Does the SSMP describe current preventive maintenance activities ® ❑
and the system for prioritizing the cleaning of sewers?
• Yes, pages 4-6 thru 4-16 detail The District's Collection
System Preventative Maintenance Program as well as provide
a description of The District's CMMS.
E. Based upon information in the Annual SSO Report, are the District's ® El
maintenance activities sufficient and effective in
minimizing SSOs and blockages?
• Yes, the District's preventative maintenance activities
are sufficient and effective in reducing SSO's and
blockages
• The District continues to be below the state and
regional averages for SSO's and the average volume
per SSO
• The spill rate for the last three calendar years (2019—
2021)were 1.43, 1.56 and 1.69 overflows per hundred
miles of sanitary sewer.
• Table 9.2—Annual SSO Statistics is included in
Element 9 of the SSMP on pages 9-4 and 9-5.
Scheduled Inspections and Condition Assessments
F. Is there an ongoing condition assessment program sufficient to
develop a capital improvement plan addressing the proper ® ❑
management and protection of infrastructure assets?Are the
current components of this program documented in the SSMP?
• Yes, there is an ongoing CCTV Condition Assessment
Program that is performed by District staff as well as
augmented with a CCTV contractor.
• This Condition Assessment Program has been in place
since 2002
• Yes, shown on pages 4-12 and 4-13
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G. Does the SSMP contain a prioritized capital improvement plan for
future rehabilitation and replacement of the sanitary sewer system ® ❑
for the next five years? Is it current?
• Yes, shown on pages 4-17 thru 4-19. This includes a 10-year
Estimated Expenditure and a Draft 100-year Sewer
Renovation Forecast
• Figures 4.9 and 4.10 in the SSMP were provided as part of the
Comprehensive Wastewater Master Plan(CWMP) completed
in June 2017 by Carollo Engineers
• The CWMP can be viewed in its entirety at
www.centralsan.org
Contingency Equipment and Replacement Inventory
H. Does the SSMP list the major equipment currently used in the ® 1:1operation and maintenance of the collection system and documents
the procedures for inventory management?
• Yes, shown on pages 4-28 thru 4-32
• Appendix B Available Equipment Inventory is included in the
SSMP.
1. Are contingency and replacement parts sufficient to respond to ® ❑
emergencies and properly conduct regular maintenance?
• Yes, shown on pages 4-27 thru 4-32
• Appendix C Available Parts Inventory is included in the SSMP
Training
J. Has all annual training been conducted as required? ® ❑
• Yes, annual training has been conducted.
• The District's Safety Officer provides monthly safety training.
• Additionally, The Field Operations Superintendent provides
training on SSMP, WDR, OERP AND MRP as well as volume
estimation annually to all field staff as a best management
practice.
Outreach to Plumbers and Building Contractors
K. Does the SSMP document current outreach efforts to plumbers and ® 1:1building contractors?
• Yes, shown on pages 4-27 and 4-28
Discussion:
Element 4—Operations and Maintenance section of the SSMP discusses the various aspects with
regards to operating and maintaining the District's collection system. This section is effective in
outlining the District's compliance with the WDR requisites for: mapping, preventative
maintenance, rehabilitation and replacement, training, and equipment and replacement parts.
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ELEMENT 5- DESIGN AND PERFORMANCE STADARDS
A. Does the SSMP reference current design and construction
standards for the installation of new sanitary sewer systems, pump ® ❑
stations and other appurtenances and for the rehabilitation and repair
of existing sanitary sewer systems?
• Yes, shown on pages 5-1 thru 5-3
• The District's Standard Specification can also be found at
www.centralsan.org
B. Does the SSMP document current procedures and standards for
inspecting and testing the installation of new sewers,pumps, and ® ❑
other appurtenances and the rehabilitation and repair of existing
sewer lines? Have any changes to the standards been implemented
since the last audit?
• Yes, shown on pages 5-3 and 5-4
• No, there have not been any changes to the Standard
Specifications since the last audit
Discussion:
Element 5 —Design and Performance Standards is effective in providing standards for the
installation of sanitary sewer facilities. The District's standard specifications are located at
www.centralsan.org. Chapters 11 and 12 of the standard specifications are titled, "Control of the
Work" and"Control of the Materials" and provide the necessary means for all needed inspection
and testing for sewer facilities.
ELEMENT 6—SANITARY SEWER OVERFLOW AND BACKUP RESPONSE PLAN
A. Does the District's Sanitary Sewer Overflow and Backup Response ® 1:1Plan establish procedures for the emergency response, notification,
and reporting of SSOs? Have any changes in past practices been
implemented since the last audit? If so, please explain.
• Yes, procedures are established for emergency response,
notification, and reporting SSO's.
• No. The initial plan was completed in February 2007 and the
plan was revised in August 2014. A minor revision was
made in April 2017 to match the revisions made to the SSMP
update.
• The Water Quality Monitoring Plan(WQMP)has been added
as Appendix D in the SSMP.
B. Are District staff and contractor personnel appropriately trained and ® 1:1verified on the procedures of the Sanitary Sewer Overflow
and Backup Response Plan?
• Yes, annual training is provided by the Field Operations
Superintendent to all collection system field staff.
• Yes, shown on pages 6-9 and 6-10. Emergency contact
information is provided to all contractors who will be working
in the collections system. Contractors are instructed to
immediately report any spills to CSO staff. CSO will provide
response, notification and clean-up activities.
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C. Considering SSO performance data, is the Sanitary Sewer ® ❑
Overflow and Backup Response Plan effective in handling SSOs to
safeguard public health and the environment?
• Yes, from the District's experience, the plan is effective in
providing safeguards to the public when an SSO has
occurred.
• Shown on pages 6-10 and 6-11 of the S SMP
• Shown on pages 9 thru 19 of the Sanitary Sewer Overflow
and Backup Response Plan
D. Are all SSO and claims reporting forms current or do they require
revisions or additions? ® ❑
• Yes, all claim forms and customer handouts are current and
shown in Section 4—Claims Handling. Shown on pages 57
thru 74 of the Sanitary Sewer Overflow and Backup Response
Plan
• The claim forms were updated in April 2017 when the Sanitary
Sewer Overflow and Backup Response Plan was revised.
E. Does all SSO event recordkeeping meet the GWDR requirements?
Are all SSO event files complete and have they been certified in ® ❑
the CIWQS system?
• Yes, shown on pages 6-8 and 6-9—Record Keeping
Requirements. The Overflow/ Stoppage Response Form is
shown on pages 55 and 56 of the Sanitary Sewer Overflow
Backup and Response Plan
• Yes, all SSO event files are complete and they have been
certified in CIWQS. As part of this audit, the Field Operations
Superintendent verified that all events in CIWQS were
certified.
• This verification is also performed every January for the prior
calendar year
F. Is all information in the CIWQS system current and correct?
Have periodic reviews of the data been made during the year to
assure compliance with GWDR? Have all Technical Report and
Water Quality Sampling requirements of the GWDR been
uploaded to the CIWQS data management system?
• Yes, as part of this audit the Field Operations
Superintendent verified that all information in CIWQS was
current and correct. This check was completed in June
2020
• Yes, reviews are made every January and prior to the
Annual Sanitary Sewer Overflow Report that is presented
to the Board of Director's in the first quarter of each
calendar year
• Yes, all Technical Reports and Water Quality Sampling
requirements have been uploaded to CIWQS. Again, this
information is reviewed by the Field Operations
Superintendent every January for the prior calendar year
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G. Are all SSO Response Procedure Flow Charts current and have all
contact information been checked and certified correct? ® ❑
• Yes, shown on pages 6-3 thru 6-6 in the SSMP. These flow
charts are taken from the Sanitary Sewer Overflow and Backup
Response Plan
• Yes, shown on page 6-3—The correct phone numbers are
listed to report an SSO. This phone number is also listed at
www.centralsan.org under the tab, "Report a Problem"
H. Were all large SSOs evaluated for"root cause" and did they
identify corrective actions required to assure reductions or
elimination of future SSOs? Were post SSO debriefing events ® ❑
held with appropriate staff and all responders?
• Yes, every SSO, backup and stoppage regardless of size
are evaluated for root cause analysis. A post occurrence
follow-up CCTV child work order is created, and the
video is reviewed at the bi-weekly Operations Meeting.
Preventative actions are also agreed upon and any
changes are made to the CMMS system.
• Yes, Post SSO's details such as notification, response and
clean up are reviewed at the bi-weekly Operations Meetings
with CSO staff.
I. Were all Technical Reports and Water Quality Monitoring results
of SSOs greater than 50,000 gallons submitted to the CIWQS System ® ❑
according to the required timeline?
• Yes, this is verified at the beginning of each calendar year
and prior to the Annual Sanitary Sewer Overflow Report
that is presented to the Board of Director's in the first
quarter of each calendar year. This activity was also
performed in June 2020 as part of this audit process.
J. Were all No Spill Certifications provided as required by the WDR
regulations completed and certified in CIWQS? Was the Annual ❑ ❑
Collection System Questionnaire completed?
• Yes, this is verified at the beginning of each calendar year
and prior to the Annual Sanitary Sewer Overflow Report
that is presented to the Board of Director's in the first
quarter of each calendar year. This activity was also
performed in June 2020 as part of this audit process.
• Yes, the Annual Questionnaire has been completed and
submitted to CIWQS. The questionnaire is completed in
January every year.
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K. Are all SSO records complete and maintained for five-years from
the date of the SSO? Have all files older than five years been ® ❑
disposed of according to District records management system and
Regional Board requirements or directions?
• Yes, all records are complete, and they are kept on file for five
years.
• Yes, the files are disposed of per the District Record Retention
Schedule. The District Records retention schedule meets the
Regional Board requirements for retention of SSO records.
L. Is staff properly trained on appropriate methods for spill volume
estimation and start time requirements for all SSOs? Has this ® ❑
training been documented appropriately?
• Yes, Volume estimation training for field staff is performed on
an annual basis. Start time requirements are reviewed in this
class. In addition, Collection System Supervisors and field
staff regularly attend industry wide training that includes
volume and start time estimation.
• Yes, sign in sheets are available for in house training. Training
certificates are available for training that was performed
outside of the District.
Discussion:
Element 6—The Sanitary Sewer Overflow and Backup Response Plan was first drafted in
February 2007. There was a major revision in August 2014 that brought the plan current to how
the District responds to sanitary sewer overflows. In 2017, the District was in the process of
updating the SSMP, while performing the update, the Sanitary Sewer and Backup Response Plan
was revised to match the changes that were being made to the SSMP. Based on the District's
experience in responding to SSO's and backups, this plan is effective in responding to overflow
events. In addition, this plan meets the regulatory requirements that is set forth in the WDR and
MRP.
ELEMENT 7—FATS, OILS AND GREASE (FOG) CONTROL PROGRAM
A. Does the FOG Control Program include efforts to educate the ® ❑
residential customers on proper handling and disposal of FOG?
• Yes, shown on page 7-2
B. Does the FOG Control Program identify sections of the collection ® 1:1system subject to FOG blockages, establish a cleaning schedule
and address source control measures to minimize these blockages?
• Yes, shown on pages 7-4 thru 7-6
C. Are requirements for grease removal devices, best management ® 1:1practices (BMP), record keeping, and reporting established in the
District's FOG Control Program?
• Yes, shown on pages 7-3 and 7-4—Requirements for grease
removal devices
• Yes, shown on pages 7-5 and 7-6—Requirements for BMP's
• Yes, shown on pages 7-4 thru 7-6—Requirements for Record
Keeping and Reporting
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D. Does the District have sufficient legal authority to implement and ® ❑
enforce the FOG Control Program? Are all enforcements effective
and resulting in appropriate compliance with requirements?
• Yes, shown on page 7-4—The District has the right to
enforce the FOG Control Program
• Yes, shown on page 7-4—The enforcements are effective and
have resulted in compliance
E. Is the current FOG program effective in minimizing blockages of ® ❑
sewer lines resulting from discharges of FOG to the system?
• Yes, the FOG Program is effective in preventing SSO's
o In 2017 there were 2 SSO's caused by FOG
o In 2018 there were 2 SSO's caused by FOG
o In 2019 there were 3 SSO's caused by FOG
o In 2020 there were 3 SSO's caused by FOG
o In 2021 there was 1 SSO caused by FOG
o Table 7.1, Fog Control Statistics is included in the
SSMP and will updated in the November 2022 SSMP
Update.
Discussion:
Element 7—FOG Control Program provides information on The District's FOG Control Program
which has been in place for over 25 years. Based on the numbers stated above in Item E., it is
determined that the FOG Control Program is effective in reducing SSO's in the District's
collection system.
ELEMENT 8- SYSTEM EVALUATION AND CAPACITY ASSURANCE PLAN
A. Does the District's Sanitary Sewer Master Plan evaluate
hydraulic deficiencies in the system, establish sufficient design ® ❑
criteria and recommend both short and long-term capacity
enhancement and improvement projects and schedules?
• Carollo Engineers completed a CWMP for the District
in June 2017. Information regarding System Evaluation
and Capacity Assurance can be found there. This
document can be located at www.centralsan.org
• Yes, shown on pages 8-1 thru 8-6—Discusses hydraulic
deficiencies, design criteria and provides
recommendation for short and long-term projects.
While not split into categories, Table 8.1 covers both
short and long-term projects.
B. Does the District's Capital Improvement Plan(CIP) establish a
schedule of approximate completion dates for both short and long- ® ❑
term improvements and is the schedule reviewed and updated to
reflect current budgetary capabilities and accomplishments?
• Yes, shown on pages 8-6 and 8-7
• The costs in Table 8.1 of the SSMP were updated as part of
the CWMP. The CWMP was completed in June 2017 and the
costs were calculated based on present value at that time
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Discussion:
Element 8— System Evaluation and Capacity Assurance Plan, is addressed in the SSMP using
The District's completed CWMP from June 2017. The CWMP was completed by Carollo
Engineers and addressed System Evaluation and Capacity Assurance. The information from the
CWMP was incorporated into the SSMP update completed in November 2017. This element of
the SSMP, as well as the information from the CWMP,provides The District valuable
information to effectively evaluate and provide the needed capacity for the collection system.
ELEMENT 9- MONITORING, MEASUREMENT, AND PROGRAM
MODIFICATIONS
A. Does the SSMP accurately portray the methods of tracking and ® ❑
reporting selected performance indicators?
• Yes, shown on pages 9-1 thru 9-4
• Shown on pages 9-2 thru 9-10, there are metrics to identify trends
and performance of the collection system
B. Is the District able to sufficiently evaluate the effectiveness of the ® ❑
SSMP elements based on relevant information?
• Yes, methods used to track effectiveness of the SSMP are shown
in Table 9.1
• Figure 9.1 shows the District's Annual SSO trends and Table 9.3
compares the District to State and Regional performance.
Discussion:
Element 9 discusses the various methods that the District uses to evaluate the collection
system and the SSMP. Monthly reports are prepared and submitted to the Director of
Operations, General Manager and various other staff. The reports include the available data
shown on page 9-2. Annual reports are presented to the Board of Directors in the first quarter
of the calendar year which reviews and compares the performance of the collections to other
agencies in the region and state of California. The Strategic SSO Reduction Approach section
on page 9-11 will be reviewed and revisions to this section will be made as they are
incorporated into operations of the collection system. All Figures and Tables will be updated in
the November 2022 SSMP Update.
ELEMENT 10–SSMP AUDITS
A. Was the SSMP Audit completed, reviewed and filed in the Appendix ® ❑
• Yes, Previous audits were completed in 2016, 2018 and 2020.
• Previous Audit from 2020 is included in Appendix A and will
be replaced by this audit.
• The District is using a revised audit form included in the SSMP
on page 10-1 –Annual Audit Template
• The SSMP was updated in 2017 and revised in 2018, 2019,
2020, and 2021.
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B. Have the collection system performance results been provided to ® ❑
the Board of Directors and the public annually? Are the results
available on the District website?
• Yes, the Annual Sewer Overflow Presentation is given to the
Board of Directors in the first quarter of each calendar year
• Yes, each Board Meeting is videotaped and can be viewed
by the public at www.centralsan.org
C. Have the performance results been evaluated for specific changes to ® ❑
meet targeted goals for SSO reduction? Have changes in
procedures been implemented to enhance the District sanitary sewer
operations?
• Yes, performance goals and metrics are reviewed by CSO
staff monthly, quarterly and annually.
• The SSMP was revised in 2018, 2019, 2020, and 2021.
There have been no new changes to sanitary sewer
operations since the update.
D. Has the Change Log been updated with all changes made to the ® ❑
SSMP during the past year?
• Yes, the change log is up to date.
• The change log will be updated to include this audit
E. Do District SSO performance results agree with all CIWQS ® ❑
information?
• Yes, our information agrees with what is found in CIWQS
• The Field Operations Superintendent at CSO reviews the
CIWQS information in January to make sure the information in
CIWQS is correct
Discussion:
Element 10—Audits, Previous audits of the SSMP were completed in 2016, 2018, 2020, and
2022. The SSMP was updated in 2017 and revised in 2018, 2019, 2020, and 2021. The
completed 2020 SSMP Audit has been included in Appendix A of the SSMP and will be replaced
by this audit.
CEMENT 11 —COMMUNICATION PROGRAM
A. Does the District effectively communicate with the public and other
agencies about the implementation and performance results of the
SSMP and continue to address any feedback?
• Yes, Section 11 of the SSMP discusses the outreach to the public. A
yearly presentation is given to the Board of Directors which the
Public can attend and provide comment.
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B. Did the District receive and review the Annual Sewer ® ❑
System Report? Was the annual report uploaded to the District
Sewer Section website and added to Appendix B?
• Yes,the Sewer System Overflow Annual Report is presented at a
board meeting in the first quarter of every calendar year.
• Yes, each Board Meeting is videotaped and can be viewed at
www.centralsan.om-
• The Annual Sanitary Sewer Overflow Report has been added to the
District's Sewer System.section of the website. The Annual Report
has not been added as an appendix.
C. Did District staff conduct and document meetings with the City of Concord. ® ❑
Are all agreements current or are changes necessary to these agreements?
• Yes,the District Staff meets with the City of Concord
• Yes,the agreement with the City of Concord is current
Change Lo _
A. Is the SSMP Change Log, current and up to date?
• Yes,the change log was updated for the March 12, 2021 revised ® N ❑
SSMP and will be revised to include this audit.
Discussion:
Element 11—Communication Program, the District communicates regularly with the public and
outside agencies. Any comments or issues that arise for the collection system are addressed as
need. The SSMP change log will be updated to include this audit.
E)�� �, 1-1 1:;�,
Paul Seitz, P.E. Date
CSO Division Manager
Legally Responsible Official
CWEA Grade IV-Collection System Maintenance
son De Groot, P.E. AD a e
CSO Senior Engineer
C W rad�IV Collection System Maintenance
G•U?•22
Steve Sau r Date
CSO Field Operations Superintendent
Legally Responsible Official
CWEA Grade IV-Collection System Maintenance
i
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Appendix B — Available Equipment inventory
Equipment
Model Year FuelType
5158 Air Compressor M156(on#119) Air Compressor Ingersoll Rand P175WJDU 1996 Diesel
5152 Air Compressor M152 Air Compressor Ingersoll Rand T30 1995 Electric
194 Auger/Hole Diger M223 Auger General 330 0 Gasoline
169 Sand Blaster M197 Blaster Snap On 0
5118 Blower M128(gasoline,on#56) Blower Ripcordl RIPCORDL 1992 Gasoline
173 Breaker M202 Breaker BTI Breaker BT750 2007
5208 Portable CCTV Unit M205 CCTV Unit Envirosight Outpost 2008 Gasoline
5229 Rammer/Soil Compactor M213 Compactor Wacker BS70-21 2012 Gasoline
5230 Rammer/Soil Compactor M214 Compactor Wacker BS70-21 2012 Gasoline
5231 Tamping Rammer M215 (esmt) Compactor Milasa MTR-40SF 2012 Gasoline
171 Viberplate M200(backhoe) Compactor Allied 14087 0
5185 Tamper M177 Compactor Wacker BS700 2000
5151 Viberplate M150 Compactor Wacker VPA1350W 1994 Gasoline
195 Weed Eater M224 Garden Tools Shindaiwa 5350/CARB 0 Gasoline
5232 Generator M216 Generator Honda EU20001 2012 Gasoline
5233 Generator M217 Generator Honda EU20001 2012 Gasoline
5186 Generator M180 Generator Honda EU1000 2002 Gasoline
5187 Generator M184 Generator Honda 2002 Gasoline
5188 Generator M185 Generator Honda 2002 Gasoline
168 Generator M196 Generator Honda EU1000 0 Gasoline
5176 Generator M169 Generator Honda EX1000 1997 Gasoline
5177 Generator M170 Generator Honda EM250OX 1997 Gasoline
5147 Generator M140 Generator Onan PRO 4000E 1994 Gasoline
63 Power Hand Rod M084 Hand Rod Sereco RTM1 1984 Gasoline
5235 Power Hand Rod M085 Hand Rod Sereco RTM1 1984 Gasoline
170 Hydraulic Impact Hammer Pnuematic Allied 725 0
M199 Tools
5234 Pressure Washer M218 Pres.Washer Alkota A-311X4 2012 Diesel
5228 Pressure Washer M210 Pres.Washer Alkota 3255X4 0
167 Pressure Washer M195 Pres.Washer Honda GX200 0 Gasoline
208 Trash Pump M226 Pump Multi-Quip QP-2H 2014 Gasoline
209 Trash Pump M227 Pump Multi-Quip QP-2H 2014 Gasoline
5183 Trash Pump M173 Pump Honda WT40X 1998 Gasoline
5182 Trash Pump M174 Pump Honda WT30X 1998 Gasoline
5146 Trash Pump M139 Pump Gorman Rupp T6A3-F4L-SPA 1991 Diesel
5159 Trash Pump M158 Pump Wacker CE 96 1996 Gasoline
5184 Pump M176 Pump Gorman Rupp T6A3-F4L-SPA 0
5148 Trash Pump M143 Pump Wacker CE 96 1994 Gasoline
5119 Trash Pump M132 Pump Honda WB 15 1992 Gasoline
50 Trash Pump M066 Pump Multi-Quip 401 1979 Gasoline
5149 Pavement/Concrete Saw M145 Saw Target PR0351IM18 1994 Gasoline
5150 Concrete Chain Saw M147 Saw Stanley COMPACT 1994 Gasoline
41 Pavement/Concrete Saw M044 Saw Target 1969 Gasoline
99630 Generator,Stand by,CSO M211 Generator Cummins DFEH- 2011 Diesel
A034W86
99631 Trash Pump M194 Pump Honda WT40X 2006 Gasoline
1
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Mobile Equipment
Model1 Asset ID Name Type Make
5274 Trailer M115 CSO Trailer Trail King 1989
5275 Mixer,Concrete M123 CSO Mixer Stone 1992 Gasoline
5276 Krapper M124(portable toilet) CSO Toilet Ed Head 1992
c Trailer M125 CSO Trailer Trail King 1992
5153 Backhoe Loader M151 CSO Heavy John Deere 1995 Diesel
Equipment
5157 Mini-Excavator M154 CSO Heavy Bobcat 2001 Diesel
Equipment
399 Trailer M157 CSO Trailer 1996
5167 Mini-Excavator M163 CSO Heavy Takeuchi 1997 Diesel
Equipment
5168 Tilt Trailer M164 CSO Trailer Zieman 1997
5169 Pipe Trailer M167 CSO Trailer Big Tex 1997
5170 Loader M175 CSO Heavy John Deere 1999 Diesel
Equipment
5171 Trailer M179 CSO Trailer 2000
5237 Pump M183 CSO Pump Cornell 2000
158 Pump M186 CSO Pump Cornell 2000
163 Off-Road Utility Vehicle M191 CSO Forklift Coot 2005 Gasoline
164 Fork Lift M192 CSO Forklift Toyota 2005 Propane
172 Loader-Backhoe M201 CSO Heavy John Deere 2007 Diesel
Equipment
174 Pump M203 CSO Pump Gorman Rupp 2007 Diesel
175 Pump M204 CSO Pump Gorman Rupp 2007 Diesel
5209 Trailer M206 CSO Trailer 2008
5210 Trailer M207 CSO Trailer Carry-On 2008
5212 Generator M209 CSO Generator Generac 2007 Diesel
5213 Scissor Lift M212 CSO Man Lift Genie 2007 Electric
190 Equipment Trailer M219 CSO Trailer Trail King 2012
192 Bypass Pump M221 CSO Pump Pioneer 2012 Diesel
193 Trailer M222 CSO Trailer Trail King 2013
206 Mixer M225 CSO Mixer Cart-Away 2014 Gasoline
210 Safety Trailer M228 CSO Trailer Diamond C 2016
5211 Generator M208 CSO Generator Ingersoll Rand 2007 Diesel
191 Generator M220 CSO Generator Ingersoll Rand 1989 Diesel
5194 Easement Hydrojet Reel M178 CSO Hydrojet Vactor 2000 Gasoline
5178 Light Tower M172 CSO Light Tower Coleman 1997 Diesel
159 Arrow Board M187 CSO Traffic Control Solar 2003
99627 Golf Cart M189 CSO Pathway 2002 Electric
99628 Golf Cart M190 CSO Pathway 2002 Electric
99802 Bypass Pump M229 CSO Pump Gorman Rupp 2016 Diesel
6265 Trailer M230 CSO Trailer Big Tex 2017
2
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Appendix C — Available Parts Inventory
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4
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Appendix D — Water Quality Monitoring Program
WDR REQUISITES
This Water Quality Monitoring Program provides the District's response activities and standard
operating procedures to be utilized in the Overflow Emergency Response Plan (OERP), in the
event a sanitary sewer overflow (SSO) exceeds 50,000 gallons. This program is reviewed periodically
and may be updated as necessary.
State Water Resources Control Board Order No. WQ 2013-0058-EXEC,Amending, Monitoring, and
Reporting Program for Statewide General Waste Discharge Requirementsfor Sanitary Sewer
Systems (Effective September 9,2013), requires the following:
SSO WDR Section D.Water Quality Monitoriniz Reauirements
To comply with subsection D.7(v) of the SSS WDRs, the enrollee shall develop and implement a SSO
Water Quality Monitoring Program to assess impacts from SSOs to surface waters in which 50,000
gallons or greater are spilled to surface waters. The SSO Water Quality Monitoring Program, shall, at
a minimum:
1. Contain protocols for water quality monitoring.
2. Account for spill travel time in the surface water and scenarios where monitoring may not be
possible (e.g., safety, access restrictions, etc.).
3. Require water quality analyses for ammonia and bacterial indicators to be performed by an
accredited or certified laboratory.
4. Require monitoring instruments and devices used to implement the SSO Water Quality
Monitoring Program to be properly maintained and calibrated, including any records to
document maintenance and calibration, as necessary, to ensure their continued accuracy.
5. Within 48 hours of the enrollee becoming aware of the SSO, require water quality sampling
for, at a minimum, the following constituents:
i. Ammonia, and
ii. Appropriate Bacterial indicator(s) per the applicable Basin Plan water quality objective or
Regional Board direction which may include total and fecal coliform, enterococcus, and e-
coli.
Additionally, for spills greater than 50,000 gallons, a SSO Technical Report is required and must be
submitted within 45 calendar days from the SSO end date. The SSO Technical Report requirements
are described in Element VI of the OERP.
1
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CENTRAL SAN COMPLIANCE
1.0 CONTAIN PROTOCOLS FOR WATER QUALITY MONITORING
Central San collects water quality samples for ALL Category 1 SSOs.The Field Superintendent or a Field
Supervisor will collect,transport, and submit water quality samples for analysis to Central San's
Laboratory, located at our Treatment Plant in Martinez, California. Samples are taken at or near where
the SSO reaches the surface water (entry point), approximately 100 feet upstream and downstream of
the entry point.The samples are collected as soon as the blockage has been cleared or if additional
staff is available the sampling activities will be completed in concurrence with clearing the blockage.
The samples are analyzed for ammonia,total coliform, fecal coliform, enterococcus, and a-coli.
Additional follow up samples are recommended to confirm the extent that the impact reverts to
baseline levels. Follow up samples can be used to determine if posting of warning signs should be
discontinued, if signs were posted. Collaboration with the Office of Emergency Services, Fish and
Wildlife, and the County Health Department shall continue until closures have been removed.
In addition, Central San has contracted with Environmental Science Associate to provide a certified
Biologist to review and provide recommendations for ALL Category 1 SSOs. Central San staff performs
the creek cleanup and the biologist is required,within 48-hours,to inspect the site for any additional
cleanup activities.The Biologist then submits a report to Central San outlining the findings. The
Biologist reports are attached to the SSO backup documentation and kept at the Collection System
Operations location in Walnut Creek.
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2
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2.0 ACCOUNT FOR SPILL TRAVEL TIME IN THE SURFACE WATER AND SCENARIOS WHERE
MONITORING MAY NOT BE POSSIBLE
The following methods are recommended to estimate spill travel time and direction:
Method 1: Use a velocity probe (such as a Global Water FP111-S Flow Probe) to
determine the rate of flow in the surface water, or
Method 2: Visual feet per second measurement. This may be done by observing or
dropping floatable debris in the surface water and timing how long it takes to travel over
a measured distance (e.g., 100 feet). Include sections in the surface water where there
are bends, bottlenecks, or other characteristics that may slow down the flow. If the first
measurement is uncertain, this estimate may be performed three to five times, and the
values averaged to determine an estimated travel time.
Either method will provide a means to estimate the distance traveled and identify where the SSO
may be headed within the waterway.
The following are scenarios where monitoring may not be possible:
Be aware of safety issues and do not subject personnel to unsafe conditions in order to comply
with this Water Quality Monitoring Plan. Sampling will not be conducted if there are any concerns
regarding field crew safety. These concerns may include:
• Heavy rain events that compromise access points through flooding and swift currents
• Rain events that include lightning
• Steep creekbanks that limit access
• Large flows in creek that are not conducive to sampling
3.0 REQUIRE WATER QUALITY ANALYSIS FOR AMMONIA AND BACTERIAL INDICATORS TO BE
PERFORMED BY AN ACCREDITED OR CERTIFIED LABORATORY
Central San is required to meet dozens of stringent water quality regulations. We operate a laboratory
that is located at our wastewater treatment plant, located at 5019 Imhoff Place in Martinez,CA. Central
San's laboratory is certified by the California State Environmental Laboratory Accreditation Program.
The lab uses equipment capable of detecting some pollutants to the parts per quadrillion.
Approximately 35,000 tests are conducted on an annual basis to identify a variety of wastewater
constituents, including ammonia, bacteria, metals,toxic organic compounds, and pathogens.
3
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4.0 REQUIRE MONITORING INSTRUMENTS AND DEVICES USED TO IMPLEMENT THE SSO WATER
QUALITY MONITORING PROGRAM TO BE PROPERLY MAINTAINED AND CALIBRATED,
INCLUDING ANY RECORDS TO DOCUMENT MAINTENANCE AND CALIBRATION,AS NECESSARY,
TO ENSURE THEIR CONTINUED ACCURACY
The below list references documents where persons reviewing SSO data would look to answer questions
about calibration and maintenance of equipment used to measure parameters for a SSO sample. The
three documents listed below are kept at the District's Laboratory, located in Martinez, California.
Records pertaining to maintenance and calibration of equipment used to analyze SSO samples are
available by request.
1. Central Contra Costa Sanitary District Dr. Mario M. Menesini Environmental Laboratory Quality
Assurance Manual (covers general maintenance and calibration procedures).
2. Standard Operating Procedures for methods used to analyze sanitary sewer overflow samples
(These will have calibration procedures/frequency along with quality control frequencies and
acceptance limits).
3. Instrument logbooks where preventative or reactive maintenance along with software updates
are described.
5.0 WITHIN 48 HOURS OF THE ENROLLEE BECOMING AWARE OF THE SSO, REQUIRE WATER
QUALITY SAMPLING FOR,AT A MINIMUM,THE FOLLOWING CONSTITUENTS:
• Ammonia
• Appropriate Bacterial indicator(s) per the applicable Basin Plan water quality objective or
Regional Board direction which may include total and fecal coliform, enterococcus, and a-coli
• Sampling Contact Information
Company Contact Person Phone#
Central San Lab Administrator Mary Lou Esparza 925-335-7751
925-260-1470 cell
Central San Supervising Chemist Blake Brown 925-229-7237
Central San Collection System Steve Sauter 925-229-7150
Superintendent 925-260-2046 cell
Central San Collection System Alex Benavidez 925-229-7175
Supervisor 925-383-0795 cell
Central San Collection System Paul Seitz 925-335-7743
Division Manager 925-383-0033 cell
Environmental Science Associates Garrett Leidy 510-463-6738
Biologist
Environmental Science Associates Erich Fischer 916-564-4500
Vice President
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FIELD EQUIPMENT SUPPLIES NEEDED FOR SAMPLING
The following list describes equipment that should be stocked and readily available for
each water quality sampling event.
1. Personnel protective equipment including latex/nitrile gloves and eye protection
2. 3 Coolers for samples—entry point sample, upstream sample and downstream sample
3. Ice for coolers to keep samples cold
4. 3—100 ml Sterile plastic containers (containing a tablet of sodium thiosulfate
preservative) for Bacteria sample collection—entry point sample, upstream sample
and downstream sample
5. 6—1 L sterile plastic containers
6. 1 —Sampling apparatus with 10' extension handle
7. 1 Gallon plastic bags used for any trash
8. Chain of Custody and Analysis Forms
Ensure that there are adequate quantities of sample containers-kits if there are
more than three sample locations.
SAMPLE COLLECTION BEST PRACTICE
1. Collect all grab samples approximately 3 -6" below the surface (or if shallower, as close as
possible to this depth) to avoid sampling debris or scum from the surface.
2. Collect the sample in a safe manner in the middle of the flow, against the direction of
water flow.
3. Leave approximately one inch of head space in individual sample bottles. Do not overfill.
4. Once the lid is opened for the individual sample bottle,do not touch the inside surface
of the bottle or lid.
5. For the sample bottles that contain a preservative, take care to keep the
preservation material in the container.
6. Once samples have been gathered, immediately place all sample bottles on ice.
7. Deliver samples to Central San's Laboratory.
SAMPLING TIME CONSTRAINTS
Bacteria samples have a 6-hour (preserved and cooled) regulatory holding time. Samples will
not be analyzed if the holding time has been exceeded. Central San's Laboratory needs about
30 minutes to set up the tests.
Ammonia samples have a 28-day regulatory holding time. Samples must be maintained at 6°C/
43°F (on ice or refrigerated) from the time of collection until receipt by Central San's Laboratory.
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SAMPLING PROCEDURE
1. Remove three (3) ice chests from Overflow Response Cabinet located in the CSO Warehouse.
owl
s
2. Verify all 3 ice chests each have 1-100 ml bottle (with dichlorination tablet already inside) and
2—1 L bottles.
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3. Fill ice chests approximately half-full of ice.
4. Site sample should be taken at the entry point of spill, approximately 100' upstream of entry
point and 100' downstream of entry point location.
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5. Use 1 L bottle to fill 100 ml bottle to fill line taking caution not to lose the sodium thiosulfate
preservative. Secure the lid and lock tab.
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6. Repeat Step 5 three times for the three sample locations.
7. Fill both 1 L bottles with sample leaving 1-inch of headspace in the sample bottle.
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8. Repeat Step 7 three times for the three sample locations.
9. Fill out labels (2 sizes for different bottles)with appropriate information (see below) and apply
to bottles. Use Sharpie ultra-fine point or similar,to avoid smearing.
8
October 6, 2022 Regular Board Meeting Agenda Packet- Page 264 of 317
Page 157 of 163
Central Contra Costa Sanitary District
Jog"' 5019 Imhoff Place,Martinez,CA 94553
(925)228.9500
l Central Contra Costa Sanitary District
' 5019 Imhoff Place,Martinez,CA 94553 SAMPLE NAME:
(925)228-9500
SAMPLE SITE:
SAMPLE NAME:
SAMPLE SITE: DATE: TIME;
DATE: TIME: - ANALYZE FOR:
ANALYZE FOR:
BY: BY:
PRESERVATIVE: LAB NO. — PRESERVATIVE:
LAB NO.:
10. Put all samples bottles in their corresponding ice chests and deliver to lab within 6 hours.
11. Fill out Chain of Custody and Analysis Form for each location where samples were taken.
9
October 6, 2022 Regular Board Meeting Agenda Packet- Page 265 of 317
Page 158 of 163
CHAIN OF CUSTODY AND ANALYSIS FORM
CSOD SEWER OVERFLOW
ANALYSIS REQUESTICUSTODY RESULTS
Sample Location
25 7-0,84.1 bd coli. to lewl asoo cAj Camp
Sampled by'. Date
54L,1-T C �` 'f� Grab ff !
Sample type Time
41
Protect Report to
SOLIDS WET CHEMISTRY METALS ORGANICS
I Settleability,mg1L :AMMONIA,mg1L >C Units: Check when re ori is attached
IpH units I Organic nitrogen,mg1L r Aluminum IF EPA 624/3250
I TSS,mg1L :COD,mg1L 7C r Antimony IF EPA 625/8270
1 Volatile SS,mg1L f Nitrite,mg& I Arsenic I EPA 610 PAH
I SVI,ML/g•30 min I-Nitrate,mg/L I'Barium r EPA 614
1 Temperature,C r OrthoPhosphate,mg/L I Beryllium I EPA632
I TS,% r Turbidity,NTU I Cadmium r EPA 60818080
1 Volatile TS,mg1LI'Hardness,mg1L I Chromium I EPA 1613
f I TDS,mg/L r Sulfate.mg1L I Chromium 6+ 1 Tribut Itin
I Alkalinity,mg/L I Chloride,mg1L I Cobalt I TPH Gas
I Sulfide,mg1L M_r Cyanide total,ug1L r Copper F TPG Diesel
F Cyanide WAD,uglL I Lead I"Organic lead
BIOASSAY r Total phosphorus,m f Manganese I Kepone/Mirex
I"LC so I-Mercury 245.2 1' EPA 8151
I Stickleback I Mercury 1631 r'TCDD equivalents
I Fathead minnow BACTI C Molybdenum (EPA 1613A)
I-AquaScience toxicity :TOTAL COLIFORM.MPN/1100ml k I Nickel
10 FECAL COLIFORM,MPN8100ml I Selenium OIL AND GREASE
l '( :ENTEROCOCCUS,CFUlmI I Silver I Oil and grease,mglL
BOD PM I Salinity r Thallium
DO PROBE,mg/LZG f2 Conductivity LL f'Vanadium HAZARDOUS WASTE 4
CBCD,mg/L X :CHLO E,m �l�I -fLvaI�v/' 0 UIQ I Zinc Check when report is attached
Additional Tests: `�`tZ 'K S l _ I'DI TCLP extraction
I Asbestos,%
I STLC extraction
I DISTLC extraction
r Fluoride,mg1L
Signature Dale and Time Number/Type of Containers and Preservatives
Relinquished by� y r �2;aL f,1 Y•4
Received
Relinquish b
Received by:
r
Reviewed and Approved byu F&Icl Date
CSO/C 1DOCUME-11DIGIUS-1 CCC1OCALS-11Temp%Iab analysis request doc
10
October 6, 2022 Regular Board Meeting Agenda Packet- Page 266 of 317
Page 159 of 163
Appendix E — R • • 200' of
N N N N N N N N N N
6 o O o 6 o O o 6 o o
++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++
N N N dJ N N N dJ N N N
EN N N E N_ N_ N E N_ N_
9J 91 91 9J 91 91 91 9J 91 91 9J
7
rel r~ r
I —4 —1 rrl ~I —4 —1 rer
l el rel
rl rl
Y
W
W
UiW
= J
r
� Q
a
J J
J J
�
Z
S2
LU
a Z cc cey ¢
W J > R LL O
on
m m O m v5 r In
vb ib � tb 1p zn od "5 1p p/
rl C3
C
m
m ro m m m ro m m m ro m by
U V L] VU V L] V 4.] V L]
9J 91 91 9J 91 91 91 9J 91 91 9J
N
pp �
Z3
Laj
A
Lk)
LU Cm
October 6, 2022 Regular Board Meeting Agenda Packet- Page 267 of 317
Page 160 of 163
ATTACHMENT 2
October 6,2022
Sewer System -
Management
Plan (SSMP) -�•.
5 Year Update
Board Meeting -
Paul Seitz
Collection System Operations Division Manager
SSMP Background lr
Iipui'
1' 4
State Water Resources Control Board '
(SWRCB): Water Quality Order No. 2006-
0003 DWQ—Statewide General Waste
Discharge Requirements for Sanitary Sewer
Systems (WDR)
Requirements for SSMP
t '
Central San's last SSMP update was
November 2, 2017 r
SSMP must be updated and approved by
the Governing Board every 5 years - -
r ` N
1
October 6, 2022 Regular Board Meeting Agenda Packet- Page 268 of 317 1
Page 161 of 163
SSMP Elements
1. Goals
2. Organization
3. Legal Authority
4. Operations and Maintenance Program
5. Design and Performance Provisions
6. Overflow Emergency Response Plan
7. Fats, Oils and Grease (FOG) Control Program
8 System Evaluation and Capacity Assurance Plan
9. Monitoring, Measurement, and Program Modifications
10.SSMP Program Audits
11. Communication Program i
1
3
SSMP Guidance/Example Documents
��F y
.6
r�.re. Sewer System
Management Plan
C"w tans 0.1.
S.nXMy Mb q
SACRAMEWrO AREA
�.5'—_..-.•-- ECWF7i CGiRIGT �. •=•ce...r
°""�'_'-•w- -� Seraf SyNanlMn�u%.n .Inrhr:I.
October 6, 2022 Regular Board Meeting Agenda Packet- Page 269 of 317 2
Page 162 of 163
SSMP Revisions
Central San made numerous revisions to the SSMP since it was last
updated ;
Per the WDR,all revisions are documented in the SSMP Change
Log
Program
Effectiveness r
NUMBER OF OVERFLOWS
180 - - f
162
160-
14314 135
140-1 123 ►H
120 107
100 ''I 81 86
80 3 3
60 ; 49 48 49 43
40 31 40 38 28
20
Q :
24 26
R. F'
-
19992000'01 '02 '03 '04 '05 '06 '07 '96 '09 '10 '11 '12 '13 '14 '15 '16 '17 '18 '19
6
October 6, 2022 Regular Board Meeting Agenda Packet- Page 270 of 317 3
Page 163 of 163
Notable WDR Updates
SWRCB has been drafting revisions to the existing WDR for the
past several years
The revisions are tentatively scheduled to be considered for ^
adoption at the SWRCB's December 6, 2022, Board Meeting
The proposed Effective Date of this Order will be 120 days after
adoption - {;i
Central San's SSMP and other plans will have to be updated
reflecting the revised Order by May 2, 2025
:v.
Recommendation SEWER SYSTEM
MANAGEMENT
Adopt Sewer System PLAN
Management Plan 5 Year ,� a
Update
■
s
October 6, 2022 Regular Board Meeting Agenda Packet- Page 271 of 317 4