HomeMy WebLinkAbout06. Consider approval of the Sewer System Management Plan (SSMP) five-year update as mandated by the California State Water Resources Control BoardPage 1 of 121
Item 6.
' CENTRAL SAN BOARD OF DIRECTORS
POSITION PAPER
MEETING DATE: NOVEMBER 2, 2017
SUBJECT: CONS IDER APPROVAL OF THE SEWER SYSTEM MANAGEMENT PLAN
(SSMP) FIVE-YEAR UPDATE AS MANDATED BYTHE CALIFORNIA STATE
WATER RESOURCES CONTROL BOARD
SUBMITTED BY: INITIATING DEPARTMENT:
JUSTIN J. WAPLES, ASSOCIATE ENGINEER ENGINEERING AND TECHNICAL SERVICES -
PDS -PLANNING AND APPLIED RESEARCH
REVIEWED BY:
Roger S. Bailey
General Manager
ISSUE
DAN FROST, SENIOR ENGINEER
DANEA GEMMELL, PLANNING AND DEVELOPMENT SERVICES DIVISION
MANAGER
PAUL SEITZ, COLLECTION SYSTEM OPERATIONS DIVISION MANAGER
ANN SASAKI, DEPUTY GENERAL MANAGER
Board approval is required for the California State Water Resources Control Board (SW RCB) mandated
update of the SSMP.
BACKGROUND
On May 2, 2006, the SW RCB approved Order No. 2006-0003, "Statewide General Discharge
Requirements for Sanitary Sewer Systems" in an effort to reduce and prevent sanitary sewer overflows.
n J my 2007, the Board approved the initial plan and schedule for development of the SSMP. A
component of the Order requires updating the SSMP at least every five years. I n December 2012, in
compliance with the Order, the Board approved the first five-year update. This is the second five-year
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update.
ALTERNATIVES/CONSIDERATIONS
None.
FINANCIAL IMPACTS
None.
COMMITTEE RECOMMENDATION
This matter was not reviewed by a Board Committee.
RECOMMENDED BOARD ACTION
Approve the SSMP Five -Year Update.
Strategic Plan Tie -In
GOAL TWO: Strive to Meet Regulatory Requirements
Strategy 1 - Strive to Achieve 100% Permit Compliance in Air, Water, Land and Other Regulations, Strategy 2 - Strive
to Minimize the Number of Sanitary Sewer Overflows
GOAL FIVE: Maintain a Reliable Infrastructure
Strategy 2 - Facilitate Long-term Capital Renewal and Replacement
ATTACHMENTS:
1. 2017 Sewer System Management Plan
2. 2017 SSMP Board Presentation
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NTRAL-CONTRA-CDSTA SANITARY
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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 Acronyms.......................................................................................................... vi
ChangeLog.................................................................................................................. viii
Element1: Goals.........................................................................................................
1-1
WDRRequisites........................................................................................................
1-1
CentralSan Compliance...........................................................................................
1-3
Element2: 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
Central San Compliance..........................................................................................
4-1
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Element 5: Design and Performance Provisions............................................................
5-1
WDRRequisites........................................................................................................
5-1
Central San Compliance...........................................................................................
5-1
Element 6: Overflow Emergency Response Plan...........................................................
6-1
WDRRequisites........................................................................................................
6-1
Central San 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
Central San Compliance...........................................................................................
11-1
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LIST OF TABLES
Table 2.1
Legally Responsible Officials
Table 2.2
Staff Contacts Responsible for SSMP
Table 4.1
Select Metrics for Operations and Maintenance Activities
Table 4.2
CSO Warehouse Spares
Table 6.1
Central San Emergency Contact Numbers
Table 6.2
Central San Overflow Response Tactics
Table 6.3
Notification, Reporting, Monitoring, and Record Keeping
Table 8.1
Capacity Project Schedule and Funding
Table 9.1
Performance Indicator Summary
Table 9.2
Statewide and Regional Comparison, Calendar Year 2016
Table 9.3
Central San Program Element Updates
Table 10.1
Central San SSMP Annual Audit Report
Table 10.2
Annual SSO Statistics
Table 10.3
FOG Control Statistics
Table 10.4
Annual Blockage Statistics and Preventive Maintenance Activities
Table 10.5
SSOs Caused by Hydraulic Limitations
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4-32
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6-7
6-8
8-7
9-3
9-5
9-6
10-1
10-2
10-3
10-4
10-6
LIST OF FIGURES
Figure 1.1
Central San Service Area Map
Figure 2.1
Collection System Operations Division Schematic
Figure 4.1
GIS - Additional Details for Asset
Figure 4.2
Sewer Line Rapid Assessment Tool
Figure 4.3
Central San Rodder Truck
Figure 4.4
Central San Hydroflush Truck
Figure 4.5
Cleaning Frequency Flow Chart
Figure 4.6
Central San Maintenance Categories
Figure 4.7
Representation of Remote Level Monitoring System
Figure 4.8
CMMS — Work Order with Asset Mapped
Figure 4.9
Ten -Year Estimated Expenditure
Figure 4.10
CWMP Draft 100 -Year Sewer Renovation Forecast
Figure 4.11
Risk -Based Analysis Process
Figure 4.12
Asset Management Plan Evolution
Figure 4.13
Confined Space Van
Figure 4.14
Emergency Pump Truck
Figure 4.15
Construction Vehicle
Figure 4.16
Emergency Response Pipe Trailer
Figure 4.17
CCTV Van
Figure 4.18
Emergency Bypass Pump
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2-5
4-4
4-7
4-8
4-8
4-9
4-11
4-15
4-16
4-18
4-18
4-20
4-21
4-28
4-29
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4-30
4-30
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L
Page 8 of 121
LIST OF FIGURES (continued)
Figure 4.19
Gorman Rupp Bypass Pump
4-31
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
6-5
Figure 6.4
Responding to a Sanitary Sewer Overflow, Slide 2
6-6
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
9-7
Figure 9.4
SSOs by Volume
9-8
Figure 9.5
SSOs by Location
9-8
Figure 9.6
SSOs by Pipe Material
9-9
Figure 9.7
SSOs by Pipe Diameter
9-9
N
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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
1/1
Inflow and Infiltration
IPM
Integrated Pest Management
LGIM
Local Government Information Model
u
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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
O&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
01
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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
MR
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Approving
Element
Change DescriptionAuthority
•.
Date
1- Goals
Added narrative on Central San's Strategic Plan
Paul Seitz
August 3, 2017
Reformatted Element
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
3- Legal Authority
Added additional narrative regarding
Paul Seitz
August 3, 2017
Central San's 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
Item B:
• Updated narrative on Operations description
• Added select metrics
• 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
MR
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4- Operations
Item D: Training
and
• Expanded training program narrative.
Maintenance
• Included emergency response training narrative
(continued)
Paul Seitz
August 3, 2017
Reformatted Element
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
Paul Seitz
August 3, 2017
Emergency
Central San's 2017 Sanitary Sewer Overflow
Response Plan
& Backup Response Plan
Reformatted Element
7- FOG Control
Reformatted Element
Paul Seitz
August 3, 2017
Program
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
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
10- SSMP Audits
Reformatted Element
Paul Seitz
August 3, 2017
11- Communication
Added additional narrative to better convey key
Paul Seitz
August 3, 2017
Program
Central San Communications Program
components
Reformatted Element
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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 484,200 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 290 budgeted employees. Central San operates a 1500 -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
1-1
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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 19 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.
Ilik
Alrtinez
Central San serves 484,200 customers within
its 74S -square -mile service area.
Concord
Wastewater collection & treatment, Household
Pleasant Hill
Hazardous Waste (HHW) disposal for 344,600
Clayton
people.
Walnut Creek
Lafayette
Wastewater treatment &HHW disposal for
Orinda Alamo
139,600 people in Concord & Clayton bycontract.
Moraga Danville
HHW disposal only.
San Ramon
Central San headquarters, treatmentplant, HHW
}
Facility & Residential Recycled Water Fill Station.
Figure 1.1 Central San Service Area Map
1-2
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CENTRAL SAN MISSION, VISION & VALUES
MISSION
To protect public health and the environment.
VISION
To be a high-performance organization that provides exceptional customer service and regulatory
compliance at responsible rates.
19a1IRIM
We achieve success by valuing:
• People
• Community
• Principles
• Leadership and Commitment
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
�, w
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
R
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 measures describe how we will evaluate
STRATEGIC
our progress along the way.
PLAN
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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
CSO Division Manager Paul Seitz 925-335-7743 pseitz@centralsan.org
Field Operations Superintendent Steve Sauter 925-229-7150 steve@centralsan.org
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
1
2
3
4
5
6
7
E3
9
11
Goals
CSO Division
Paul Seitz (LRO)
925-335-7743
Manager
Organization
CSO Division
Paul Seitz (LRO)
925-335-7743
Manager
Environmental &
Regulatory
Legal Authority
Lori Schectel
925-229-7143
Compliance Division
Manager
CSO Field
Steve Sauter
O&M Program
Operations
(LRO)
925-229-7150
Superintendent
Capital Projects —
Design &
Collection System
Alexandr
Performance
925-229-7261
Program Senior
Mestetsky
Provisions
Engineer
Overflow
CSO Field
Steve Sauter
Emergency
Operations
(LRO)
925-229-7150
Response Program
Superintendent
Environmental
FOG Control
Compliance
Tim Potter
925-229-7380
Program
Superintendent
System Evaluation
Planning & Applied
& Capacity
Research Associate
Justin Waples
925-229-7368
Assurance
Engineer
Monitoring,
Measurement &
CSO Senior
Jason DeGroot
925-383-0171
Program
Engineer
Modifications
SSMP Program
CSO Division
Paul Seitz (LRO)
925-335-7743
Audits
Manager
Communications
Communication
Emily Barnett
925-229-7310
Program
Services & Inter-
governmental
Relations Manager
pseitz@centralsan.org
pseitz@centralsan.org
Ischectel@centralsan.org
steve@centralsan.org
smestets@centralsan.org
steve@centralsan.org
tpotter@centralsan.org
jwaples@centralsan.org
jdegroot@centralsan.org
pseitz@centralsan.org
ebarnett@centralsan.org
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:
General Manager: Directs, manages, and administers all operational, engineering, and administrative
activities of Central San.
Deputy General Manager: Assist the General Manager in providing overall leadership of Central San;
direct, manage, and administer all activities within the Operations Department, which includes the Plant
Operations Division, Plant Maintenance Division, CSO Division, and the District Safety Program; act as the
General Manager in his or her absence.
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.
Field Operations Superintendent: 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.
Maintenance Crew Leader: 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.
6Sj17A10II Aill"►FiL4J►11LA 1191011
CSO focuses on the day-to-day tasks such as cleaning, CCTV inspection, locating, repairs, maintenance,
and SSO response and reporting. The Engineering 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.
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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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ORGANIZATION
An organization chart identifying lines of authority within CSO is presented in Figure 2.1 below.
General Manager
Deputy General
Manager
Collection System
Opr- Division Mgr -
Administrative
Ski ppolt . Senior Engineer
Sr. Administrative Assis. I Field Ops.
Administrative Assis. �Superintende=1
Supervisor 1 Supervisor 7 Supervisor 1 — Supervisor
Crew Leader 7 Crew Leader 6 Crew Leader 3 Crew Leader 2
Crew Member 7 Crew Member 6 Crew Member 3 Crew Member 2
Equip. Operator 2
Page 21 of 121
Vehicle & Equip.
Maint-Supervisor 1
Vehicle & Equip.
Machanir. 3
Utility Worker 2 Collection System Administrative
Maint Scheduler 1 Technician 2
Figure 2.1. Collection System Operations Division Schematic
(Number indicates quantity of authorized positions)
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Page 22 of 121
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://Iibrary.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 S
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 hof 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 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, 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 2) Fahrenheit or sixty degrees (60 2) 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 afire 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 (402)
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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,
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. 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, 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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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.
Page 30 of 121
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 290 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 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.
WDR ITEM A:
SANITARY SEWER SYSTEM INFRASTRUCTURE MAPPING
Within CSO, there are 57 budgeted positions 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.
GEOSPATIAL INFORMATION SYSTEM
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.
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The GIS system was developed using Environmental Systems Research Institute's (ESRI) Local Government
Information Model (LGIM). The LGIM incorporates many 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, pump 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 pump 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, 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
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.
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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 7SA2-M47 indicates a manhole 47 is on Central San map
quadrant 7SA2.
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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.
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.
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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 120 month intervals. The maintenance schedules are
predicated based on the lines' history, results of TV inspection, 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 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 146 -square miles with a population of over 467,500. 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 55% of the system
is vitrified clay or asbestos cement pipe installed over 45 years ago.
CSO is responsible for cleaning, maintenance, repair, and CCTV inspection of the underground pipelines
that make up Central San's sewer system, along with emergency response. In 2016, over 850 miles of
sewer were cleaned by an average daily number of five crews on rodding trucks and five crews on hydro -
vacuum trucks.
Maintaining this system is an ongoing process involving approximately 50 field employees. A designated
crew 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.
Central San also manages the operation and maintenance of 19 pump stations that are located throughout
its service area. A dedicated team of approximately nine employees operate and maintain these critical
facilities. In addition to the daily inspections of each pump 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.
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METRICS
Table 4.1 Select Metrics for Operations and Maintenance Activities
Total Length of Pipes Cleaned (miles)
815
847
782
780
823
Total Length of Pipes CCTV'd (miles)
136
196
226
187
194
Total Number of Spot Repairs 94
Total Number of Structure Adjustments 130
QA/QC Pass Rate 95%
78
99
64
120
198
258
198
117
92%
98%
94%
97%
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 120 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 2015
to June 2016, 327 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, 1,250 miles are on a cleaning schedule. The remaining pipes are the larger trunk
sewers, and they are cleaned on an as -needed basis.
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 350 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).
A new tool Central San uses to evaluate sewers is the Sewer Line Rapid Assessment Tool (SL -RAT),
Figure 4.2. The SL -RAT is a lightweight portable tool composed of two parts: a transmitter and a
receiver. It uses sound waves to determine if the sewer requires cleaning. The SL -RAT takes less than
three minutes to evaluate a line and is primarily used in easements and to check sewers in the more
distant areas of the service area. Using this tool, Central San can focus cleaning in the difficult -to -
reach areas to only those lines that need cleaning, reducing the possibility of overflows.
Figure 4.2 Sewer Line Rapid Assessment Tool
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.
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Figure 4.3 Central San Rodder Truck
Figure 4.4 Central San Hydroflush Truck
Central San's goal is to clean or inspect all lines every 120 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 4.5.
November 2, 2017 Regular Board Meeting Agenda Packet - Page 87 of 303
Is pipe diameter less
than 18 inches?
NO
No maintenance schedule Is the pipe new?
for pipes larger
than 18"diameter
NO ES
Does the pipe have a Assign the pipe to an
history of issues? Extended Maintenance
(Plug calls, Overflows, Schedule (Routine) and
high CCTV Score?) CCTV within 7 years
NO
Assign the pipe to an Extended
Maintenance Schedule (Routine)
and CCN within 7 years
Are the issues Roots,
Grease and/or Debris?
THROUGHOUT
Assign frequent Preventative
Maintenance based on severity
(heavy, medium or light)
1,2,3,6,12,24 or 36 months
1►C+l
MANHOLES ONLY
Are the issues
structural?
• Monitor with CCTV until repair advised
• Repair/Replace through Engineering Dept.
• Preventative Maintenance as necessary
Add manholes to
structure survey list to be
inspected every 12 or 24
months
Page 38 of 121
FORCE MAINS
Central San has approximately 21 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.
PUMP STATIONS
The Pump Station Operations Staff are the primary personnel responsible for the day to day operation
and maintenance of the Pump 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 Pump Station 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 generator
• 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 sand bags 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 pump station 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 pump stations, such as annual generator testing. Staff from
Pump 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 4.6.
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r------i
i
Unplanned j
RM
PM
PDM
Reactive
Preventative
Predictive
Maintenance
Maintenance
Maintenance
IF
rovement�
CM
NMF
mization�d
Corrective
Non-
kation
Maintenance
Maintenance
Figure 4.6 Central San Maintenance Categories
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 Pump 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 began a comprehensive CCTV inspection program in 2002 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 selected a private contractor by a competitive bid process to carry out
this work. Virtually the entire collection system was inspected by 2010 at a cost of approximately
$7 million. 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 15 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 four 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.
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 416 lines for its Quality Assurance and Quality
Control (QA/QC) Program. There are 44 lines per month that are chosen by the Maintenance
Coordinator 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 44 lines, 24 are for the Rodding Section that have had a history of roots, and 20 are for the
Hydroflush Section that have had a history of grease or deposits. The lines are assigned a number
which coincides with the line number on the cleaning schedule. The day these lines are cleaned, a
work order is created for them to be televised. The results are sent to the appropriate supervisor,
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and the data is entered on the QA/QC spreadsheet. The results and video are then shared with the
Crew Leader who cleaned that particular line segment. Of the 416 lines that were a part of the QA/QC
Program, 17 failed and had to be re -cleaned. This amounts to a 95% success rate. Since this Program
was implemented in February 2007, Central San has seen an improvement every year. Crew Leaders
have taken ownership and pride in all the line segments they have cleaned. Through this program,
Central San has been alerted to new root intrusions in sewer pipes with no previous root history. This
has allowed staff to adjust the cleaning schedules accordingly and to avoid stoppages and overflows.
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, pump
station 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, pump stations,
and the treatment plant facilities. The cathodic protection for metal pipes in the collection system is
primarily sacrificial anodes. While at the pump stations and some force mains, an impressed current
cathodic protection system is used. Pump Station 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.
:V40I.T91CM►E1f1IaIP7aa"Tell l:16i1Is] ►
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.
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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.
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 an SSO occurs. Refer to Figure 4.7 for a basic
overview of the system.
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Figure 4.7 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
4.8.
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Figure 4.8 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 supervisor's
regarding the work activity.
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:
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• 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 2017-18
For FY 2017-18, Central San's budget for Collection Systems Operations and Maintenance is $14 million.
COLLECTION SYSTEM RENOVATION AND REPLACEMENT BUDGET
Fiscal Year 2017-18
For FY 2017-18, Central San's Collection System CIB is $18 million.
Renovation and Replacement Budget 10 Year Estimate
In 2016, Central San renovated or replaced over eight miles of 6- to 10 -inch sewers in streets and
easements throughout the service area.
In 2017, Central San completed its Comprehensive Wastewater Master Plan (CWMP). The CWMP
investigated Central San's Collection System and Treatment Plant as an integral system and provided
guidance for making decisions to ensure the infrastructure is maintained appropriately into the future. In
alignment with the CWMP recommendations, Central San is preparing to increase the total length of pipe
replaced per year, for the foreseeable future.
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Figure 4.9 provides a summary of the 10 -year estimated fiscal year capital budget for Collection System
Rehabilitation and Replacement (R&R), as of May 2017. These estimates will be updated every year to
ensure Central San is responsive to the changing needs of the infrastructure.
Figure 4.10 provides a summary of the 100 -year estimated expenditures for the Collection System R&R,
as of May 2017. These estimates will be updated periodically to ensure Central San is responsive to the
long-term needs of the infrastructure.
Estimated Fiscal Year Capital Budget
50
45
40
0 35
30
25
20
15
m
10
5
0
FY 2017- FY 2018- FY 2019- FY 2020- FY 2021- FY 2022- FY 2023- FY 2024- FY 2025- FY 2026-
18 19 20 21 22 23 24 25 26 27
Fiscal Year
Figure 4.9 Ten -Year Estimated Expenditure — Collection System Replacement and Rehabilitation
Forecasting and prioritizing replacement needs is an iterative process. Refer to Figure 4.10 for the draft
renovation forecast.
80,000,000
70,000,000
60, 000, 000
G 50,000,000
u
40,000,000 -
.a
u 30,000,000
20, 000, 000
10, 000, 000 di 11
Period
0-5 Years38
5-10 Years
cost ($M) Mileage
$180 42
10-20 Years
$441 184
20-30 Years
$724 281
30-50 Years
$1,156 403
50-75 Years
$575 2
75-100 Years
$808
IIIIIIIIIIIIIIIIIIIIIII
w 1-4 1__ O M z m N u9 W 1-4 -e 1• O M LD m N N w e I 7 n O M �D m N ury w 1-1 -e n
1-1 N N N M M m m't't -�I_ u9 Ln u1 LD LD LD lD h h 1" W W w m m m m O O O 1-1 e-1 e-1
O O O O O O O O O O O O O O O O O O O O O O O O O O O O 1--1 r 1-1 1-1 e-1 e-1
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 4.10 CWMP Draft 100 -Year Sewer Renovation Forecast
Please refer to centralsan.org for the most current budget information.
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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) and 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
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 10 years, and beyond. Criteria used
for bin placement include:
• Risk
• LOF
• COF
• Age
• Remaining Useful Life
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Likelihood of Failure (Consequence of Failure
Maintenance Frequency Risk Hydraulic Model
CCTV Scores Infrastructure Data
Pipe Diameter GIS Data
Remaining Useful Life Critical Facilities
Prioritization
Rehabilitation Rehabilitation Rehabilitation
Cost Engine Budget
l
Capital
Improvement
Plan
Figure 4.11 Risk -Based Analysis Process
Risk is a product of LOF and COF and ranges from negligible to extreme.
LOF is based on:
• Maintenance frequency
• CCTV Scores
• Pipe Diameter
• Remaining Useful Life
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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.
Determine Opkimize Optimize Determine
Business Risk D&M Capita! FunirEg
(Criticality) Investment Investment Strategy
• •
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 4.12.
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.
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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 21 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.
Following up on the CWMP recommendations, Central San will commence a condition assessment
program for its force mains in FY 2017-18 to quantify the condition of this critical infrastructure and to
optimize R&R forecasting.
all LTA l21141IFA I[Qi!F1
Central San's CWMP was completed in 2017. It includes an Asset Management component that reviewed
Central San's gravity mains, force mains and pump stations. During this project, all of Central San's 19
pump stations underwent a condition assessment investigation by both specialized consultants and
Central San staff. Recommendations were prioritized and cost estimates were developed for each pump
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 InfoMaster° software calculates COF for all the gravity pipes, based on multiple
factors and uses GIS spatial analysis (i.e., proximity to schools, hospitals, waterbodies, 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 2017-18 to quantify the condition of this critical infrastructure
and to optimize R&R forecasting.
WDR ITEM D:
TRAINING PROGRAM
TRAINING OVERVIEW
Is] :71401rerIIQZI
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.
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
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.
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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
• 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
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TRAINING TOPICS
MANDATORY TRAINING TOPICS
CSO staff have the following mandatory training schedule:
• SSMP Training
• Excavation/Competent Person
• Traffic Control/Flagger Training
• SCBA/Confined Space Training
• Driver Commentary Training
• SSOBRP
141W"F_10W-11IZII►IC2t0l:2[41
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
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.
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TAILGATE TRAINING SESSIONS
Tailgate training sessions are provided at plant, pump 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
TRAINING RECORDS
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.
Training activities include practical exercises and training within the
Operations Department (treatment plant and collections systems), damage
assessment team exercises and training, emergency communications
protocols and training on how to use various communications tools, joint
or shared training with other agencies in the area, and training on Common
Operating Picture systems.
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.
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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 are 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. Collections 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.
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 crewmember 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
• Vactor Jetter Trucks
• Champion Rodding Trucks
• CUES CCTV Trucks
• Bypass Pump Van
• Confined Space Van
• 6" Gorman Rupp Portable Pump
• Bypass Pipe Trailer
• Laboratory Water Sampling Kit and
Chain of Custody Forms
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The purpose of these emergency vehicles and equipment is to quickly restore flow and repair the damage
in the pipe. The Sewer Overflow 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 pump
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 4.13) 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.
Figure 4.13 Confined Space Van
Central San's emergency pump vehicle (Figure 4.14) 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 pump stations or areas of the collection system that are blocked and cannot be quickly
cleared.
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Figure 4.14 Emergency Pump Truck
Central San's construction vehicle (Figure 4.15) 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 4.15 Construction Vehicle
Central San's emergency response pipe trailer (Figure 4.16) carries 20 -foot sections of 6 -inch aluminum
pipe for emergencies. The trailer also carries street crossing equipment and flexible intake and discharge
hose.
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Figure 4.17 CCTV Van
Central San's large pump stations have emergency equipment on site ready to go, such as emergency
bypass pumps (Figure 4.18). Other trailer -mounted equipment is kept ready to go at the Pump Stations'
Corporation Yard at the Martinez campus.
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Figure 4.18 Portable Emergency Bypass Pump at Martinez Pump Station
Central San currently owns two trailer -mounted Cornell pumps and two trailer -mounted Gorman -Rupp
pumps (Figure 4.19) for bypass pumping.
Figure 4.19 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 (SunGard). 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 pump 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 103 vehicles and
other CSO equipment, which range from backhoes to small generators, and maintains their warehouse with
spare parts.
Table 4.2 CSO Warehouse Spares
Vactor Combination and Jetter Trucks
Champion Rodder Trucks
CCTV Trucks
Construction
reel hose, guide hose, various spare nozzles,
guide hose splicing machine
continuous rod, various cutting blades
redundancy provided with (4) CCTV Trucks
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,
W crushed rock,
various traffic signage,
generators,
light towers,
trash pumps
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WDR REQUISITES
D.13. (v) Design and Performance Provisions:
(a) Design and construction standards and specifications for the installation of new sanitary sewer
systems, pump stations and other appurtenances; and for the rehabilitation and repair of existing
sanitary sewer systems; and
(b) Procedures and standards for inspecting and testing the installation of new sewers, pumps, and
other appurtenances and for rehabilitation and repair projects.
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 2014 Revised Edition (August 2015) Central San Standard
Specifications document:
1. Introduction, Authority and Compliance with Law
2. Acronyms, Abbreviations and Terms
3. Code Provisions and Policies
4. Design Standards
5. Plan Preparation
6. Plan Review
7. Surveying for Construction
8. Property Rights for Wastewater Facilities
9. Source Control
10. Permits, Contractor's Licenses, Insurance and Owner's Sewer Improvement Agreements
11. Control of the Work
12. Control of Material
13. Not Used
14. Not Used
15. Technical Specifications
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 pump 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 District staff during
the final plan review. The designed pipeline is staked in the field. The cut sheets are compared to the
construction 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 Standard Specs Section 11, "Control of the Work" and Section 15, "Technical Specifications."
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.
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 backfill, but prior to asphalt installation.
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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 is investing in an Automatic Vehicle Location (AVL) system.
Office staff will immediately know which crew is nearest an SSO and will dispatch that crew to respond.
The new AVL system will have 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 Emereencv Contact Numbers
Sewer Spills
(925) 933-0990
Odors -Sewers or Treatment Plant (925) 335-7703
Sewer Maintenance & Repairs (925) 933-0990
Reporting Illegal discharges or Spills into Sewer (925) 229-7288 (during business hours)
System (925) 229-7214 (after business hours)
C1*1Z910Maw-1V11
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.
The Pumping Station Emergency Response Plans contain procedures for the individual pumping stations.
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
pump 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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Business Hours:
- Mon - Fri, 6:30 am to 3:00 pm
- Calls are routed through CSO Phones:
925-933-0990 or 925-933-0955
CSO Dispatch:
1. Respond to the caller as appropriate.
2. Refertosection 3B,Customer
Relations and Communications Tips,
foradditional details.
3. Record the information on the CSO
Dispatch Phone Log (213).
YES
NO
After Hours:
Cal Is routed to Answe ri ng Service.
Service notifies On -Cal I Crew Leader.
On Call Crew Leader:
Record the date, the time the call was
received, the time you returned the
call, the caller's name, phone number,
address and the nature of the problem
on the On Call Work Report.
YES
-�- Go to Side 2
NO
1. Provide the cal ler with contact
infoforthe 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 calleryourname and phone number in case they have any further questions.
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 lertoturnoff their HVAC system.
7. Advise the callerto move any uncontaminated property awayfrom the overflowarea if it can be
done safely.
Business Hours:
CSO Dispatch:
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
After Hours:
On Call Crew:
Respondtothe service call location.
WDR ITEM B:
PROGRAM TO ENSURE APPROPRIATE RESPONSE
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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—)0 YES
NO
1. Evaluate the extent and suspected causeof the SSO.
2. If the SSO wi I I likely, oraI 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 5Afor emergency response vendor contact information.
r CLEAR THE STOPPAGE I
1. Use cleaning equipment a ppropri ate to the situation (hydro, rod,
YES hand -rod). Refer to sections 3F and 3G for additional info.
2. Once stoppage is resolved, remove tools and equipment.
3. Photograph staffactivitieswhileclearingthestoppage, ifpossible.
NO
PUMP STATION FAILURE RESPONSE
YES 1. Ensure al I electrical hazards have been Locked &Tagged Out!
2. Determine the causeof the pump station failure.
3. Refer to the CCCSD Pump Station Emergency Response Plan.
4. Photograph staffactivities and document all actionstaken.
NO
DIVERSION & CONTAINMENT
1ngan area YE$ 1. Divert away from sensitive areas (unplugged storm drains,
iita schools, day cares, playgrounds, intersections). Coverunplugged
storm drains with mats, dirt, or other diking material.
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.
I 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-B9) and the Maintaining
the Flow Brochure (4-B10), both from the Incident Envelope.
4. If customer is not home, complete and leave the Customer Service Door Hanger.
5. Complete Work Order and route to
Figure 6.3. Responding to a Sanitary Sewer Overflow, Slide 1
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From
Side 1
I COLLECT WATER SAMPLES I
1. Use the Field Sampling Kit and fol IowSOP.
See 31 for additional info.
2. Assign staffto post the Warning -Raw
Sewage sign (56)alongthe shorelineof
impacted waters or as directed by the
County Environmental Health Dept.
NO
I CONTAINMENT I
1. Contact your Supervisor ifadditional
containment assistance is required.
1. Esti mate SSO vol umeusing one of the
methods listed in section 3K.
2. Rememberthat the spill probably started
sometime before it was reported. Account
for this when esti mati ng SSO volume.
I DOCUMENTATION & REPORTING I
1. Complete the Overflow/Stoppage
Response Form (3L).
2. Includeprinted copies of digital photos.
3. Includeall notes,drawings, calculations and
any other documentation from the SSO.
4. Forward the entire package to the CSOD
Suoeri ntendent.
NO
YES
Usethe Hach Ammonia Kit(inField
SamplingKit)to tracethe extent of
the SSO inthe storm drain.
STORM DRAIN CLEANING SOP
1. Seal or berm the storm drain immediately
downstream of where the SSO reached.
2. Photograph impacted storm drain catch
basins beforecleaning.
3. Vaccuum any visiblesewageand record the
volume of sewage recovered.
4. Flush impacted sections of storm drainwith
decholorinatedwater and record
the volume of flush water recovered.
5. Remove all visiblesigns of sewage.
6. Return flush water (if chlorinated)to
sanitarysewerand record the volume of
flush water recovered.
7. Photograph all stormdraincatch basins
after cleaning is completed.
I AREA CLEANUP
Figure 6.4. Responding to a Sanitary Sewer Overflow, Slide 2
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1. Assign staff to begin cleanup.
NOTE: If SSO was caused by a lateral or
private linefailure,clean up impacted public
areas and document stafftime, equipment
used and expenses incurred.
2. Remove all signs of gross pollution (toilet
paper, solids, grease etc.)
3. Flush area with metered, dechlorinated
water:
-Continue flushinguntilclearHach
(Ammonia) test.
Set up berm/other containment to collect
all flushwatersoitcan be
returned to the sewer.
Don't use disinfectants that may enter the
storm drain or other water body.
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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✓ ✓
✓
✓
✓
✓
✓
✓
✓
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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 Deputy General Manager, 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
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 three 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
Conduct water quality sampling within 48 hours after initial SSO required to be uploaded into
Water Quality 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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• 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
��I 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
RN provides its member utilities with:
w_ier/WasineIecA;ecyRnNcnwHrAvk • 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 an 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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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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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 sewer system 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,
explain the inspection process, and provide tips on water pollution prevention. 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, 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 (attached at end of element).
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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, 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 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.
Section 9 of Central San's Standard Specs was adopted using the Uniform Plumbing Code as reference and
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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 9 is available at the following link:
http://www.centralsan.org/documents/section 9 source control.pdf
Section 9 is periodically revised to ensure the standards are current and protective of Central San's
operations. Under the Standard Specs Section 9-01A, 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, plumbing
fixtures, square footage of the FSE 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.
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
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inspection priorities.
New and upgraded pipes are placed on a five-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 over time 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, 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
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), city
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
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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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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,
for both dry weather flows and wet weather flows.
A GIS -integrated, risk-based asset management and capital planning
software platform (InfoWorkso) is used to assist staff in identifying and
prioritizing collection system improvement needs. Infrastructure data and
CMMS data is input 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 120 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.
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.
• Laic«a _
►� �>`
��•,a •• _, :A::�t • � •�
s
•
a •F Px . • 0
-� m•5 � � � n '; ej< w
' R+mai
Figure 8.12015-2016 Flow Monitoring Locations
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.
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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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r m r: -r A X 4m 4 16mJ6 a .0we. • in r O-, U 0� . NT.:m a
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Figure 8.2 Hydraulic Model Screenshot
UNUM' i4P.mf4.#3%.iEA4M kn %.. f
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 static hydraulic model will continue to be used to evaluate hydraulics in small diameter pipes, as an
interim measure, until those pipes are included in the new dynamic model pipe network.
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.
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.
November 2, 2017 Regular Board Meeting Agenda Packet - Page 135 of 303
M�tl
*W ,eyWllGa epwi
q
I�op�F p�aq
_
�nl iti a N Cpm
Nw•/
• Qpe T� Oplr. 57'y� p�Gt IW !{ago 14A e
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q
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-f
I.* -Pug OwPQ S. Cw l
Figure 8.2 Hydraulic Model Screenshot
UNUM' i4P.mf4.#3%.iEA4M kn %.. f
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 static hydraulic model will continue to be used to evaluate hydraulics in small diameter pipes, as an
interim measure, until those pipes are included in the new dynamic model pipe network.
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.
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.
November 2, 2017 Regular Board Meeting Agenda Packet - Page 135 of 303
Page 85 of 121
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 10 -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 fora 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 pump stations is adequate for a 10 -year
design event, with exception of one pump 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.
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.
November 2, 2017 Regular Board Meeting Agenda Packet - Page 136 of 303
Page 86 of 121
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 pump stations to extend their useful lives,
repair structural deficiencies, and improve performance to provide adequate peak hydraulic capacity.
Planned improvements include sewer improvements, pump 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.
a'Tell l:14i aP1 1T/:1X971►TA 1401111
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.
Fs,M
November 2, 2017 Regular Board Meeting Agenda Packet - Page 137 of 303
Page 87 of 121
Figure 8.3 Sewer Construction
Capacity PlanningProject Capital Project Design &
Prioritization >
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 InfoMaster° 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
November 2, 2017 Regular Board Meeting Agenda Packet - Page 138 of 303
Page 88 of 121
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
ID Scheduled
Gravity System
Funding
Estimated
Allocation*Project
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
CWMP
present value, developed in Central San's 2017
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.
November 2, 2017 Regular Board Meeting Agenda Packet - Page 139 of 303
Page 89 of 121
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;
(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 (InfoMaster) 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.
9-1
November 2, 2017 Regular Board Meeting Agenda Packet - Page 140 of 303
Page 90 of 121
WDR ITEM A:
MAINTAIN RELEVANT INFORMATION TO PRIORITIZE SSMP ACTIVITIES
APPROACH
CSO Supervisors meet 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.
lei%1IWe114aDI IV
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 SWRC13'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.
9-2
November 2, 2017 Regular Board Meeting Agenda Packet - Page 141 of 303
Page 91 of 121
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
Goals Establish priorities of Enrollee
and provide focus for Enrollee
staff
Organization Document organization of
Enrollee staff and chain of
command/communication for SSO
Design & Construction
Standards
Overflow Emergency
Response Plan (OERP)
Fats, Oils &
Grease (FOG) Control
Ensure new facilities are
properly designed and constructed
Provide timely and effective
response to SSO emergencies and
comply with regulatory reporting
requirements
Minimize blockages and
overflows due to FOG
Annual review of goals based
upon results of performance evaluations
Review of Organization Chart
and all contact information, making any changes
identified
Annual review of codes and/or
ordinances for revisions, including schedule for identified
updates
• Total number and volume of SSOs
• Number of repeat SSOs (from same location as
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
Annual review of new
technologies and materials for collection systems assets
• Average response time from call to arrival
• Percent of total SSO volume contained or
returned to sewer
• Number of blockages due to FOG
• Number of SSOs due to FOG
• Number of FOG -producing facilities inspected]
9-3
November 2, 2017 Regular Board Meeting Agenda Packet - Page 142 of 303
response
Legal Authority
Ensure the Enrollee has
sufficient legal authority to
properly maintain and protect the
integrity of the system
Operations and
Minimize blockages and SSOs
Maintenance
by properly operating and
Program
maintaining the system
Design & Construction
Standards
Overflow Emergency
Response Plan (OERP)
Fats, Oils &
Grease (FOG) Control
Ensure new facilities are
properly designed and constructed
Provide timely and effective
response to SSO emergencies and
comply with regulatory reporting
requirements
Minimize blockages and
overflows due to FOG
Annual review of goals based
upon results of performance evaluations
Review of Organization Chart
and all contact information, making any changes
identified
Annual review of codes and/or
ordinances for revisions, including schedule for identified
updates
• Total number and volume of SSOs
• Number of repeat SSOs (from same location as
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
Annual review of new
technologies and materials for collection systems assets
• Average response time from call to arrival
• Percent of total SSO volume contained or
returned to sewer
• Number of blockages due to FOG
• Number of SSOs due to FOG
• Number of FOG -producing facilities inspected]
9-3
November 2, 2017 Regular Board Meeting Agenda Packet - Page 142 of 303
Table 9.1 continued
Monitoring,
Evaluate effectiveness of
Measurement &
SSMP, keep SSMP up-to-date, and
Program
identify necessary changes to
Modifications
SSMP Elements
Program Audits
Formally identify SSMP
effectiveness, limitations, and
necessary changes on an annual
basis
Communication
Communicate with the public and
Plan
satellite agencies
Page 92 of 121
• Prepare and update performance results in
Elements 4, 6 & 7
• Review and update callout forms as needed
• Conduct annual review of CIWQS data
Date of completion of last annual audit
Ongoing review of public outreach activities
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.
9-4
November 2, 2017 Regular Board Meeting Agenda Packet - Page 143 of 303
NUMBER OF OVERFLOWS
180-
162
160 143 141
140 1 135
123
120 -, 107
100
80
40
20
0
1999 2000 2001 2002 2003 2004 2005 20C
Figure 9.1 Central San's Annual SSO Trends
STATEWIDE AND REGIONAL COMPARISON
Page 93 of 121
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 9.2 Statewide and Regional Comparison, Calendar Year 2016
Number of SSOs
3,710
Total Volume (Gallons)
21,038,207
SSOs per 100 miles of
sewer
4.93
Average Volume per
SSO (Gallons)
5,678
* Information from CIWQS
as of 2/10/17
1,067 40
5,590,368 29,200
7.2 2.63
5,264 736
9-5
November 2, 2017 Regular Board Meeting Agenda Packet - Page 144 of 303
Page 94 of 121
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 and to identify and plan for future needs to support its Strategic Plan goals and to further
reduce the occurrence of SSOs (Table 9.3). Refer to Element 4 for further information on the above
initiatives.
Table 9.3 Central San Program Element Updates
Comprehensive Wastewater Master Plan
Tablets for Field Crews
Acoustic Rapid Sewer Inspection Equipment
New enterprise GIS System
New C M M S Software System
New CCTV Software System
New Analytical Capital Planning Software System
Standard Specifications Amendment
Sanitary Sewer Overflow and Backup Response Plan Update
Large-scale Sewer Flow Monitoring
New Hydraulically Dynamic Sewer Model
WDR ITEM E:
4—Operations & Maintenance Program
8 —System Evaluation & Capacity Assurance Plan
4—Operations & Maintenance Program
4—Operations & Maintenance Program
4—Operations & Maintenance Program
4—Operations & Maintenance Program
4—Operations & Maintenance Program
4—Operations & Maintenance Program
5 — Design & Performance Provisions
6 — Overflow Emergency Response Plan
8 — System Evaluation & Capacity Assurance Plan
8 —System Evaluation & Capacity Assurance Plan
IDENTIFYAND ILLUSTRATE SSO TRENDS, INCLUDING FREQUENCY, LOCATION
AND VOLUME
APPROACH
To reduce the likelihood of future SSOs occurring, 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.
November 2, 2017 Regular Board Meeting Agenda Packet - Page 145 of 303
Page 95 of 121
DATA TRENDS 2012 - 2016
SSOs BY SYSTEM
60
50
40
gill
20
10
0
2012 2013 2014 2015 2016
Gravity System tForce Mains Pump Stations
Figure 9.2 SSOs Per Year by System
SSOs BY CAUSE
45
40
35
30
25
20
15
10
5
0
2012 2013 2014 2015 2016
--*--Roots --O--Other —6—Grease —40 --Physical Defect —41 --Capacity
Figure 9.3 SSOs Per Year by Cause
9-7
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Page 96 of 121
SSOs BY VOLUME
30.00
25.00
20.00
15.00
10.00
5.00
0.00
2012 2013 2014 2015 2016
+<10 Gal. +10-100 Gal. +100-1,000 Gal. —40-->1,000 Gal.
Figure 9.4 SSOs by Volume
M1613 -Ts 11616011Eel ►1
18
16
14
12
10
8
6
4
2
1
1
1
0
2012
2013
2014 2015
2016
■ Alamo
■ Concord
■ Danville ■ Lafayette
■ Martinez
■ Moraga
■ Orinda
■ Pleasant Hill ■ San Ramon
■ Walnut Creek
Figure
9.5 SSOs
by Location
r"ID•
November 2, 2017 Regular Board Meeting Agenda Packet - Page 147 of 303
Page 97 of 121
SSOs BY PIPE MATERIAL
40.00
35.00
30.00
25.00
20.00
15.00
10.00
5.00
0.00
2012 2013 2014 2015 2016
CABS CACP tCIP tDIP tHDPE tPVC tVCP tCL
Figure 9.6 SSOs by Pipe Material
&TO» 37aIa4 7lelf'I:11114.1
40.00
35.00
30.00
25.00
20.00
15.00
10.00
5.00
0.00
2012 2013 2014 2015 2016
t4" t6" t8" t10" t>10"
Figure 9.7 SSOs by Pipe Diameter
November 2, 2017 Regular Board Meeting Agenda Packet - Page 148 of 303
Page 98 of 121
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 21 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 specifies 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.
STRATEGIC SSO REDUCTION APPROACH
STRATEGY TO FURTHER REDUCE SSOs
Central San uses a multi -faceted approach to continuously reduce SSOs. This approach leverages
teamwork and technology.
Team Work
O&M staff debrief 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
• 1-12S 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
9-10
November 2, 2017 Regular Board Meeting Agenda Packet - Page 149 of 303
Page 99 of 121
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.
9-11
November 2, 2017 Regular Board Meeting Agenda Packet - Page 150 of 303
Page 100 of 121
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 a
written report and the 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 Renort
Central Contra Costa Sanitary District
Sewer System Management Plan Annual Audit Report
Date of audit
Name of auditor
System Overview
LF of gravity sewer mains
LF of force mains
Total LF of all sewer line
Number of pump stations
Population served
Current monthly single family residential sewer rate
10-1
November 2, 2017 Regular Board Meeting Agenda Packet - Page 151 of 303
Page 101 of 121
I. GOALS
1. Are the goals stated in the SSMP still appropriate? (circle one) YES / NO
II. ORGANIZATION
Reference Material
• Organization chart
• Phone list
2. Is the SSMP up to date with agency organization and staffing
contact information? YES / NO
III. SANITARY SEWER OVERFLOW & BACKUP RESPONSE PLAN (SSOBRP)
Reference Material
• Data submitted to CIWQS
• Service call data
Table 10.2 Annual SSO Statistics
2012
2013 2014 2015
2016
Number of dry -weather SSOs (occurring May -Oct)
Number of wet -weather SSOs (occurring Nov -Apr)
Total number of SSOs
Number of SSOs per 100 miles of sewer per year
Number of SSOs < 100 gallons
Number SSOs 100 to 999 gallons
Number of SSOs 1,000 to 9,999 gallons
Number of SSOs > 10,000 gallons
Total volume of SSOs (1000 gals)
Total volume recovered (1000 gals)
Net volume of SSOs (total minus recovered) (1000 gals)
volume not recovered
SSOs caused by:
Roots
Grease
Debris
Pipe failure
Pump station failure
Capacity — limited pipe segment (no debris)
Other
Number of locations with more than one SSO in the past year
Average response time (minutes) — during business hours
Average response time (minutes) — after business hours
3. Does the SSMP contain an up-to-date version of your agency's YES / NO
SSOBRP?
4. Considering the information in Table 10.1, is the SSOBRP YES / NO
effective in handling SSOs?
10-2
November 2, 2017 Regular Board Meeting Agenda Packet - Page 152 of 303
Page 102 of 121
IV. FATS, OILS, AND GREASE (FOG) CONTROL
Reference Material
• List or map of FOG sources in service
• List or map of hotspots
• Cleaning schedules
• Restaurant inspection reports or summaries
• Data submitted to CIWQS
• Service call data
Table 10.3 FOG Control Statistics
5. Does the SSMP contain up-to-date information about your
agency's FOG Control program? YES / NO
6. Considering the information in Table 10.2, is the current FOG
Program effective in documenting and controlling FOG sources? YES / NO
V. LEGAL AUTHORITY
7. Does the SSMP contain up-to-date information about your agency's
Legal authority? YES / NO
8. Does your agency have sufficient legal authority to control sewer
use and maintenance? YES / NO
VI. MEASURES AND ACTIVITIES
A. COLLECTION SYSTEM MAPS
Reference Material
• Summary of information included in mapping system
9. Does the SSMP contain up-to-date information about your
agency's maps? YES / NO
10. Are your agency's collection system maps complete, up-to-date
and sufficiently detailed? YES / NO
B. RESOURCES AND BUDGET
Reference Material
• Current Capital Improvement Plan (CIP)
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2012
2013
2014 2015 2016
Number of SSOs caused by FOG
FOG inspections for grease interceptor installation
FOG inspections for discharge compliance
Total number of FOG inspections completed
5. Does the SSMP contain up-to-date information about your
agency's FOG Control program? YES / NO
6. Considering the information in Table 10.2, is the current FOG
Program effective in documenting and controlling FOG sources? YES / NO
V. LEGAL AUTHORITY
7. Does the SSMP contain up-to-date information about your agency's
Legal authority? YES / NO
8. Does your agency have sufficient legal authority to control sewer
use and maintenance? YES / NO
VI. MEASURES AND ACTIVITIES
A. COLLECTION SYSTEM MAPS
Reference Material
• Summary of information included in mapping system
9. Does the SSMP contain up-to-date information about your
agency's maps? YES / NO
10. Are your agency's collection system maps complete, up-to-date
and sufficiently detailed? YES / NO
B. RESOURCES AND BUDGET
Reference Material
• Current Capital Improvement Plan (CIP)
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• Current operating budget
11. Does the SSMP contain up-to-date information about your
agency's resources and budget? YES / NO
12. Are your agency's resources and budget sufficient to support
effective sewer system management? YES / NO
13. Do your agency's planning efforts support long-term goals? YES / NO
C. PRIORITIZED PREVENTATIVE MAINTENANCE
Reference Material
• Cleaning schedules
• List or map of hotspots
• Work orders
• Service call data
• Customer feedback
Table 10.4 Annual Blockage Statistics and Preventive Maintenance Activities
14. Does the SSMP contain up-to-date information about your
agency's preventive maintenance activities? YES / NO
15. Considering the information in Tables 10.1 - 10.3, are your agency's
preventive maintenance activities sufficient and effective in reducing
and preventing SSOs and blockages? YES / NO
D. SCHEDULED INSPECTIONS AND CONDITION ASSESSMENT
Reference Material
• Inspection reports
• Infiltration and Inflow (1/1) monitoring studies and reports
• Pipe and manhole condition data
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November 2, 2017 Regular Board Meeting Agenda Packet - Page 154 of 303
2012
2013
2014
2015
2016
Blockages in the past year
Blockages due to:
Roots
Grease
Debris
Other
Ratio of unplanned cleaning to scheduled cleaning
(LF)
Number of customer feedback surveys received in
the last year
Average Rating in feedback surveys (4.0 max)
14. Does the SSMP contain up-to-date information about your
agency's preventive maintenance activities? YES / NO
15. Considering the information in Tables 10.1 - 10.3, are your agency's
preventive maintenance activities sufficient and effective in reducing
and preventing SSOs and blockages? YES / NO
D. SCHEDULED INSPECTIONS AND CONDITION ASSESSMENT
Reference Material
• Inspection reports
• Infiltration and Inflow (1/1) monitoring studies and reports
• Pipe and manhole condition data
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16. Does the SSMP contain up-to-date information about your
agency's inspections and condition assessment? YES / NO
17. Are your agency's scheduled inspections and condition
assessment system effective in locating, identifying and
addressing deficiencies? YES / NO
E. CONTINGENCY EQUIPMENT AND REPLACEMENT INVENTORIES
Reference Material
• Funds spent on equipment and materials
• Equipment and parts inventory
18. Does the SSMP contain up-to-date information about equipment and
replacement inventories? YES / NO
19. Are contingency equipment and replacement parts sufficient to respond
to emergencies and properly conduct regular maintenance? YES / NO
F. TRAINING
Reference Material
• Employee training records
20. Does the SSMP contain up-to-date information about your agency's
training expectations and programs? YES / NO
21. Do supervisors believe that their staff is sufficiently trained? YES / NO
22. Are staff satisfied with the training opportunities and support offered to
them? YES / NO
G. OUTREACH TO PLUMBERS AND BUILDING CONTRACTORS
Reference Material
• Fliers/mailings
• Mailing lists
23. Does the SSMP contain up-to-date information about your agency's
outreach to plumbers and building contractors? YES / NO
24. Has your agency conducted or participated in any outreach activities to
plumbers and building contractors? YES / NO
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VII. DESIGN AND CONSTRUCTION STANDARDS
Reference Material
• Design and construction standards
• Ordinances
25. Does the SSMP contain up-to-date information about your agency's
design and construction standards? YES / NO
26. Are design and construction standards, as well as standards for
inspection and testing of new and rehabilitated facilities, sufficiently
comprehensive and up to date? YES / NO
VIII. CAPACITY MANAGEMENT
Reference Material
• Capacity assessment reports
• CIP
• SSO data
Table 10.5 SSOs Caused by Capacity Limitations
2012 2013 2014 2015 2016
Number of SSOs caused by capacity limitations
27. Does the SSMP contain up-to-date information about your agency's
capacity assessment? YES / NO
28. Has your agency completed a capacity assessment and identified and
addressed any hydraulic deficiencies in the system? YES / NO
IX. MONITORING, MEASUREMENT AND PROGRAM MODIFICATIONS
29. Does the SSMP contain up-to-date information about your agency's
data collection and organization? YES / NO
30. Is your agency's data collection and organization sufficient to evaluate
the effectiveness of your SSMP? YES / NO
X. SSMP AUDITS
31. Will this SSMP Audit be submitted to the Regional Water Board by
March 15? YES / NO
XI. COMMUNICATION PROGRAM
Reference Material
• Mailings and mailing lists
• Website
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• Other communication records such as newspaper ads, site postings or other outreach
• Customer feedback
32. Does the SSMP contain up-to-date information about your agency's
public outreach activities? YES / NO
33. Does the SSMP contain up-to-date information about your agency's
communications with satellite and tributary agencies? YES / NO
34. Has your agency effectively communicated with the public and other
agencies about the SSMP and addressed feedback? YES / NO
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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
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
improvements. The work done by CSO is often highlighted as well as
publishing Central San's emergency number to help expedite report of an
overflow. Along with disseminating information, the newsletter builds
support in our communities and maintains open communication with the
people Central San serves.
November 2, 2017 Regular Board Meeting Agenda Packet - Page 158 of 303
�•- z '� 3 ll
Page 108 of 121
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,
diapers, and cleaners, Central San's Communication
Services group has expanded its outreach to the public with
activities similar to the FOG program, including Pipeline
newsletter articles, social media messaging, exhibits at
environmental fairs, community events, mailers, brochures
and postings at municipal permit counters.
DOOR HANGERS
What can 0 do?
U*nu Wy,iC, nota game.Clogged p,prs can rause—ge overflows&mst€y damage. ynw Raperty
BUT YOU M HE[ ?PREVENT THEM.
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 blockages are a leading cause of sewer spills in the
United States. Communication staff distribute FOG
brochures to large apartment complexes, Chambers of
Commerce and municipal permit counters throughout the
services area, and areas where grease is known to
accumulate.
h es bout Central S.in Keep Fats. Oils,
and Grease Out
ain]
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Page 109 of 121
CONSTRUCTION LIAISON OUTREACH
Outreach begins with a mailed notice of anticipated work anywhere from nine to 12 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 a.
opportunities, and public notices. Website viewers are encouraged todin
„V
provide feedback, and a phone number for reporting a sewer spill is "'Sa
r Id n I�Rsana tleansan
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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 r w�' "Y
customers. In FY 2016-17, Central San had over 6,000 visits to its
YouTube videos. Central San also won three CWEA film awards, one of which was for a recent public
service announcement.
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.
11-3
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Page 110 of 121
STUDENT EDUCATION PROGRAMS
Central San maintains the most active student programming of any wastewater district in the San
Francisco East Bay.
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.
Third and fifth grade students in Central San's service area take part in the Water Wizards program,
learning about water resources, Bay Area water issues and protecting their local watershed. The program
provides an overview of how the collection system and wastewater treatment processes work. These
programs raise awareness of the younger customers, educating them on the world of sewers and how
they can be involved, primarily in the practice of pollution prevention. Frequently, discussions in the home
occur as a result of the instruction provided to students who have participated in these programs. In
FY 2016-17, Sewer Science and Water Wizards had over 2,400 students participate in the program.
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.
CENTRAL SAN ACADEMY
Participants in the Central San Academy learn about almost everything
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.
'RAC SAA A011D
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.
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Page 111 of 121
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. In
FY 2016-17, Central San had over 5,000 attendees at events.
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.
SPEAKERS BUREAU
W It
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 2016-17, Central San
presented to over 300 attendees.
HOUSEHOLD HAZARDOUS WASTE COLLECTION
Central San's household hazardous waste facility collects over
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.
TRIBUTARY SYSTEMS
The collection systems for the Cities of Concord and Clayton are
tributaries to Central San's collection system. There are regular
communications between Central San and each City's
management and staff on joint projects and other topics of
importance. Central San provides environmental compliance
inspections for permitted businesses in Concord and Clayton.
Residents from these communities also participate in the Central
San's pollution prevention, student education, household
hazardous waste, pharmaceutical collection, and FOG programs.
Refer to Element 3 — Legal Authority for additional information.
11-5
November 2, 2017 Regular Board Meeting Agenda Packet - Page 162 of 303
X
I\k Justin Waples, Associate Engineer
Planning &Applied Research Group
November 2, ..,a Board McPtinn An,=nrj;4 Packet - Pana 1si nfiwi
SEWER SYSTEM MANAGEMENT PLAN
(SSMP)
5 -YEAR UPDATE
November 2, 2017
Board Meeting
SSMP BACKGROUND
State Water Resources Control Board: Order No. 2006-
003 Waste Discharge Requirements for Sanitary Sewer
Systems
Central San's last SSMP Update was in December 2012
SSMP must be updated at least every five years
SSM' GOALS
Responsibly manage, operate, and maintain all parts of the
wastewater collection system and adhere to the
components of the SSMP
Provide adequate capacity to convey design peak flows
Mitigate impact of Sanitary Sewer Overflows (SSOs)
Minimize frequency of SSOs
SSMP ELEMENTS
Goals
Organization
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
SSMP GUIDANCE/EXAMPLE DOCUMENTS
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Clty orConcord
Sewer System Management Plan
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Sewer System
Management Plan
Central Contra Costa
Sanitary District
October 2012
SACRAMENTO AREA
SEWER DISTRICT
S E R V N G Y O U 2 4 7 7
Sewer System Management Plan
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City of San Jose
Sewer System Management
Plan
October 2014
SSMP HAS A NEW APPEARANCE
Chapter 2. Organiza#ion
The Central Contra Costa Sanitary District (District} has over 250 employees who
maintain and operate a collection system of over 1500 miles of pipe with 19 pumping
stations and a treatment plant that treats and discharges an average of 42 million
gallons per day.
An organization chart displaying the District groups that are responsible for work
included in the Sewer System Management Plan (SSMP) is presented in Figure 1. The
key responsibilities for each workgroup pertaining to the SSMP have been highlighted
on the figure- For District managers, the roles are briefly stated as follows:
The General Manager establishes policy, allocates resources, informs and solicits input
and participation of the Board of Directors -
The Director of Collection Systems Operations provides oversight for field operations
and maintenance activities, and provides input for Engineering Department staff to
optimize capital construction projects for sewer and pumping stations most in need of
renovation or upgrade -
The Director of Engineering authorizes the preparation of collection system planning
documents and the design and construction of capital projects, and presents the annual
Capital Improverren It Budget and Plan for Board approval.
The Environmental Services Division Manager manages the work and priorities for staff
in Planning and Source Control.
The Capital Projects Division Manager manages the work and priorities for staff in the
design and construction of capital projects for renovation and expansion of the
collection system.
Other staff and workgroup responsibilities are listed in Figure 1. Within the Collection
System Operations (CSO) Department, Technical Services staff provide support for
equipment and vehicles, bath routine and emergency. The function of operation and
maintenance scheduling is also included in this workgroup. The work of the Pumping
Stations and Field Cperations workgroups includes resources and budget, preventative
maintenance, repairs, inspection, training, and sanitary sewer overilaw {SSO) reporting
and response.
WOR REQUISITES
D.13. (ii) Organization: The SSMPmusti den tify.•
(a) ThenameofbherespcmiblecvauMorizedrepresentativeasdesaibedwSection loftheWDR,
(b) The names and telephone numbers for management aa4ministrative, and maintenance positions
responsihle for im p+em enting specific measures in the 55 MP program. The SSMP must i den tl fy lines of
authority through an organizational rhartofsrmilardocument with anarrativeexplanation; and
(c) The chain of communication for reporting SSOs, from receipt of a complaint or other information,
incluaing the person respansahle for reporting SSOs to the State and Regional Water Board and other
agencies if applicable (such as County Health Officer, County Environmental Heolth Ageicy, Regional
Water Board, an d/or S tate Office of Emergency Services (DES).
WAR ITEMS A& 8:
AUTHORIZED REPRESENTATIVE & RESPONSIBLE PARTIES
CENTRAL SAN COMPLIANCE
The Collection Systems Operations (CSO) Division Manager has the overall responsihility for the
development, management, and implementation of Central San's SSMP. Table 2.1 identifies Central San's
LegallyResponsible Officials (LROs).
Table 2.1 Legally Responsible Officials (LR Os)
LRO Position
CSO Division Manage r
Responsible Name
Paul Seitz
Phone Number
925-335-7743
Email Address
pseitz@centmisan.org
Field Operations Superintendent
Steve Sauter
925-229-7150
sieve@ ce ntral san. org
Maintenance Supervisor
Alex Benwidez
92`.,-383-0795
a6enavidez@centmisan. org
Maintenance Supervisor
Tifton Gantt
925-229-7163
tiff@centralsan.org
Maintenance Supervisor
Chris Johnsen
925-383-0686
gohnsen@centmisan.org
Maintenance Supervisor
Ed Silva
925-229-7176
esilva@centralsan.org
NOTABLE SSMP UPDATES
Initiativ Element Updated
4—Operations and Maintenance
Comprehensive Wastewater Master Plan 8 — System Evaluation & Capacity
Tablets for Field Crews
Acoustic Rapid Sewer Inspection Equipment
Enterprise Geospatial Information System
Computerized Maintenance Management
Software System
Closed Circuit Television Software System
Analytical Capital Planning Software System
Assurance Plan
4—Operations and Maintenance
4 — Operations and Maintenance
4—Operations and Maintenance
4—Operations and Maintenance
4—Operations and Maintenance
4 — Operations and Maintenance
NOTABLP: SSMP UPDATES
Initiative
Standard Specifications Amendment
SSO and Backup Response Plan Update
Large -Scale Sewer Flow Monitoring
Dynamic Sewer System Hydraulic Model
Element Updated
5 — Design & Performance Provisions
6 — Overflow Emergency Response Plan
8 —System Evaluation and Capacity
Assurance Plan
8 —System Evaluation and Capacity
Assurance Plan
PROGRAM EFFECTIVENESS
NUMBER OF OVERFLOWS
O
160
140
120
100
80
60
40
20
0
1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016
COMMENDATION
Approve Sewer System Management
Plan 5 -Year Update �
I
SEWER SYSTEM
MANAGEMENT
PLAN
NOVEMBER 2017
PH