HomeMy WebLinkAbout05.a. Receive report on FY 2021-22 Closeout of Capital Improvement Projects Page 1 of 14
Item 5.a.
CENTRAL SAN
October 11, 2022
TO: ENGINEERING AND OPERATIONS COMMITTEE
FROM: EDGAR J. LOPEZ, CAPITAL PROJECTS DIVISION MANAGER
REVIEWED BY: PHILIP LEIBER, DIRECTOR OF FINANCE AND ADMINISTRATION
ROGER S. BAILEY, GENERAL MANAGER
SUBJECT: RECEIVE REPORT ON FISCAL YEAR 2021-22 CLOSEOUT OF CAPITAL
IMPROVEMENT PROJECTS
17 capital improvement projects were closed in Fiscal Year 2021-22. Attachment 1 lists the expenditures
and budget under-run or over-run for each project. All expenditures are based on the pre-audit financial
reports ending June 30, 2022. Attachment 2 contains a brief summary of the work completed under each
project. For project budget details, please reference the information provided under the Financial
Statements.
Strategic Plan Tie-In
GOAL ONE: Customer and Community
Strategy 1—Deliver high-quality customer service
GOAL TWO: Environmental Stewardship
Strategy 1 -Achieve compliance in all regulations
GOAL FIVE: Safety and Security
Strategy 1 - Reduce and eliminate risks of injury or illness, Strategy 2- Protect Personnel and assets from threats and
emergencies
GOAL SIX., Infrastructure Reliability
Strategy 1 - Manage assets optimally, Strategy 2- Execute long-term capital renewal and replacement program
ATTACHMENTS:
1. Expenditure Summary
2. Project Descriptions
3. Presentation
October 11, 2022 Special EOPS Committee Meeting Agenda Packet- Page 22 of 37
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Attachment 1
Expenditure Summary
Fiscal Year 2021-22 Closed Projects
TREATMENT PLANT PROGRAM
DISTRICT AUTHORIZED EXPENDITURES UNDERRUN
PROJECT PROJECT TITLE BUDGET AS OF 6/30/22OVERRUN
NO. 6/30/22 (OVERRUN)
7304 PLC Systems Upgrades $ 740,000 $ 540,710 $ 199,290
7339 Plant Control System 1/0 Replacement 3,470,000 3,128,714 341,286
7352 UV Disinfection Upgrades 1,350,000 1,042,973 307,027
7353 Outfall Improvements, Phase 7 5,920,000 5,790,674 129,326
7354 Treatment Plant Security Improvements 191,629 202,349 (10,720)
7355 Odor Control Upgrades, Phase 1 300,000 0 300,000
7360 Existing Facilities As-Is Drawings 300,000 263,073 36,927
7367 Concord Main Metering Station 650,000 852,963 (202,963)
Program Totals $12,921,629 $11,821,456 $1,100,173
COLLECTION SYSTEM PROGRAM
DISTRICT AUTHORIZED EXPENDITURES UNDERRUN
PROJECT PROJECT TITLE
NO. BUDGET AS OF 6/30/22 (OVERRUN)
6534 Harper Lane CAD $ 660,370 $ 660,370 $ 0
8451 Collection System Sewer Renovation, Phase 1 3,048,527 1,195,327 1,853,200
8458 Martinez Sewer Renovations, Phase 6 4,470,000 4,467,935 2,065
8459 Lafayette Sewer Renovations, Phase 14 4,200,000 4,165,246 34,754
8460 Walnut Creek Sewer Renovations, Phase 14 5,173,000 5,166,227 6,773
8461 South Orinda Sewer Renovations, Phase 8 6,100,000 6,112,090 (12,090)
100026 Pacheco Boulevard Sewer Renovation 250,000 249,860 140
Program Totals $23,901,897 $22,017,055 $1,884,842
GENERAL IMPROVEMENTS PROGRAM
DISTRICT AUTHORIZED EXPENDITURES UNDERRUN
PROJECT PROJECT TITLE BUDGET AS OF 6/30/22 OVERRUN
NO. (OVERRUN)
8236 District Easement Acquisition $483,047 $290,830 $192,217
RECYCLED WATER PROGRAM
DISTRICT AUTHORIZED EXPENDITURES UNDERRUN
PROJECT PROJECT TITLE BUDGET AS OF 6/30/22 OVERRUN
NO. (OVERRUN)
7306 Zone 1 Recycled Water $732,894 $684,688 $48,206
TOTAL EXPENDITURES $38,039,467 $34,814,029 $3,225,438
October 11, 2022 Special EOPS Committee Meeting Agenda Packet- Page 23 of 37
Page 3 of 14
Attachment 2
Project Descriptions
Fiscal Year 2021-22 Closeouts
TREATMENT PLANT PROGRAM
Project No. Proiect Title
7304 Programmable Logic Control (PLC) Systems Upgrades
The major elements completed under the project are upgrading hardware and software
necessary to maintain new PLC applications, replacing older computers with newer computers
capable of running current software, upgrading older PLC models to maintain compatibility with
the new equipment, instrumentation, and controls, and developing and documenting
programming standards for PLC and Supervisory Control and Data Acquisition.
7339 Plant Control System Input and Output (1/0) Replacement
This purpose of this project is to replace obsolete 1/0 cards and improve associated control
system components. The major elements completed under this project included replacing 1/0
cards with modern Schneider X80 cards, retrofitting communications, network cards and cabling,
providing uninterruptible power system power to 1/0 panels, upgrading field wiring and devices as
necessary and providing as-built documentation of the updated system.
7352 Ultraviolet Disinfection Upgrades
This project included replacing conduits and connectors between the existing ballasts and UV
banks, and repairing or replacing components of the existing UV chemical cleaning system with
the purpose to keep the UV system reliable for the next five years. Other items, such as gates
and actuators, have been included as potential rehabilitation or replacement in another
renovation project.
7353 Outfall Improvements, Phase 7
The last inspection of the outfall was in 2013 and is required every ten years. This project
included many elements as completed during the previous phases: coordinated inspection and
temporary bypass approval with the Regional Water Quality Control Board, and obtained all other
necessary permits, tested the land portion of the outfall and repaired or installed new joint seals
as necessary, repaired access manholes, and updated pipeline survey data, made structural and
valve modifications to Structure 9000, repaired two pier structures over submarine section,
installed new safety access hatch, and road improvements for safer, more efficient access to
facilities.
7354 Treatment Plant Security Improvements
Findings from a comprehensive security study in Fiscal Year 2016-17 related to the treatment
plant was implemented under this project. Some improvements were implemented in
collaboration with the pumping station and general security improvement projects that were also
identified under the same study. The improvements completed included increased surveillance,
intrusion detection, and access control improvements, perimeter fencing repair and increased
signage, improved guard facilities, including main gate and contractor staging areas, and other
miscellaneous security improvements. The funds being returned to the program are savings.
7355 Odor Control Upgrades, Phase 1
The work included updating the Odor Control Facilities Plan and confirming odor control threshold
requirements for design and repairing the Headworks Odor Control Unit, ductwork, panels, and
piping. Other limited repairs were done for the pre-air units at the sedimentation tanks. Future
repairs are anticipated for the pre-air units and Solids Conditioning Building. The majority of the
project funds were transferred to the Mechanical and Concrete Renovations project where these
improvements were completed.
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Attachment 2
Project Descriptions
Fiscal Year 2021-22 Closeouts
7360 Existing Facilities As-Is Drawings
This project compiled available past project information, performed field investigations as
required, and developed and updated as-is CAD drawings for existing facilities. Currently, the
focus for as-is drawings will be electrical facilities and treatment plant process areas where
improvements were completed in the past five years.
7367 Concord Main Metering Station
Concord owns and operates its own sewer collection system. Central San treats their flow by
contract under a long-term agreement. The flow contribution from Concord is typically 33-34
percent of the total flow to the treatment plant and they pay the cost of treatment (operations,
maintenance, and capital costs) on a flow-proportional basis. Concord has, at times, expressed
concerns about the accuracy of the existing District meter. Staff initiated a study on the metering
system, and the analysis indicated that a new magnetic flowmeter would be more accurate and
require less maintenance than the existing flowmeter. Other improvements implemented were
relocation of the sump pump discharge piping to a new location for better operations access and
some electrical work, as well as an addition of intrusion alarm monitoring at the facility. Electrical
and controls work was done to allow better communication with Central San. In accordance with
the agreement, Concord reimbursed half of the design and construction costs.
COLLECTION SYSTEM PROGRAM
Project No. Project Title
6534 Harper Lane Area Contractual Assessment District (CAD)
In certain instances, the cost to extend public sewers into an area serviced by septic tanks can be
an extreme financial burden for one owner or even a small group of property owners. Central San
developed the CAD Program to address this financial burden. The CAD process provides a
means to finance the cost of sewer improvements over time at a fixed interest rate. The CAD
assessments are placed on the customers' property tax bills each year until the entire amount is
reimbursed to Central San. Each CAD is presented to the Board of Directors for approval. The
Harper Lane CAD in the Town of Danville installed approximately 2,765 feet of sewer and
infrastructure to serves up to 34 properties.
8451 Collection System Sewer Renovations, Phase 1
This project was for sewer planning, design, and construction for sewer renovation projects.
These designs were bid and split into individual projects for construction and spanned two fiscal
years. Projects in such areas included: Lafayette, Moraga, Orinda, Walnut Creek, Alamo, Diablo,
Martinez, Pleasant Hill, Pacheco, Concord, Danville, San Ramon and other locations within the
service area. This project contributed to over 30 miles of sewer replacement in the past five
years.
8458 Martinez Sewer Renovations, Phase 6
The Martinez Sewer Renovations, Phase 6 project replaced or rehabilitated up to 9,000 feet of
small diameter sewers located in both public right-of-way and easements.
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Attachment 2
Project Descriptions
Fiscal Year 2021-22 Closeouts
8459 Lafayette Sewer Renovations, Phase 14
The Lafayette Sewer Renovations, Phase 14 project replaced or rehabilitated up to 12,700 feet of
small diameter sewers located in both public right-of-way and easements.
8460 Walnut Creek Sewer Renovations, Phase 14
The Walnut Creek Sewer Renovations, Phase 14 project replaced or rehabilitated up to 9,900
feet of small diameter sewers located in both public right-of-way and easements. This project
included a creek crossing.
8461 South Orinda Sewer Renovations, Phase 8
The South Orinda Sewer Renovations, Phase 8 project replaced or rehabilitated up to 6,400 feet
of small diameter sewers located in both public right-of-way and easements within the southern
portion of the city of Orinda, south of Highway 24.
100026 Pacheco Boulevard Sewer Renovations
GENERAL IMPROVEMENTS PROGRAM
Prosect No. Project Title
8236 District Easement Acquisition
Easements acquired through this project included easements for existing sewers where no
easements currently exist, easements for sewers relocated through other public agency projects,
upgraded easements or access rights for existing sewers, upgraded easements for Central San's
outfall pipeline, and easements for recycled water distribution pipelines. A new project with the
same purpose will be initiated in FY 2022-23. This project's timeline has expired.
RECYCLED WATER PROGRAM
Prosect No. Project Title
7306 Zone 1 Recycled Water
This project provided funds for the planning, design, and construction of recycled water facilities
for landscape irrigation and commercial customers in the Zone 1 distribution area. A new project
with the same purpose will be initiated in FY 2022-23. This project's timeline has expired.
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October 11, 2022 Special EOPS Committee Meeting Agenda Packet- Page 26 of 37
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Attachment 3
October 11,2022
FISCAL YEAR 2021-22 _
CLOSED CAPITAL
PROJECTS
Engineering & Operations
Committee
Edgar J. Lopez, P.E.
Capital Projects Division Manager
1
Total Expenditures by Capital Program
Program Program Underrun
Expenditures (Overrun)
Treatment Plant $11,821,456 $1,100,173
Collection System $22,017,055 $1,884,842
General Improvements $290,830 $192,217
Recycled Water $684,688 $48,206
Total Expenditures: $34,814,029 $3,225;CIA
1
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Treatment Plant Program
Closed Projects > $1 Million
Project project Title Expenditures
Number
Plant Control System Input and
7339 Output (1/0) Replacement $3,128,714
7352 Ultraviolet Disinfection (UV) $1,042,973
Upgrades
7353 Outfall Improvements, Phase 7 $5,790,674
1
Plant Control System 1/0 Replacement
District Project (DP) 7339
Purpose:
To upgrade PLC 1/0 cards and associated systems with current technology to
maintain reliable operation and vendor support.
Work Completed:
Replaced obsolete 1/0 cards with modern Schneider X80 1/0 cards;
Retrofitted communications: including network cards and cabling;
Provided uninterruptible power system power to 1/0 panels;
Upgraded field wiring and devices, as necessary; and
ib
Provided as-built documentation of the updated system.
1
2
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Plant Control System 1/0 Replacement
DP 7339
i
V=_ L
Before After
1
UV Disinfection Upgrades
DP 7352
Purpose:
To rehabilitate components of the existing UV disinfection system and improve
reliability. Extend the equipment life for at least 5 years as replacement is
evaluated and planned.
Work Completed:
Replaced conduits and connectors between the ballasts and UV banks;
Repaired and replaced components of the existing UV chemical cleaning system;
Planning and assessments of UV gates, actuators, stems, and seals; and
Investigated methods to protect the UV system from the elements.
1
3
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UV Disinfection Upgrades
DP 7352
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Power Distribution Centers Lamp Connectors
NEIN' Ift1
Outfall Improvements, Phase 7, DP 7353
Purpose:
Inspect the outfall to maintain or repair the pipeline and meet regulatory requirements.
Work Completed:
Coordinated temporary bypass approval with the Regional Water Quality Control Board;
Tested the land portion of the outfall and installed new joint seals as necessary;
Repaired access manholes and updated pipeline survey data;
Made structural and valve modifications to Structure 9000;
Repaired two pier structures over submarine section, installed new safety access; and
Road improvements for safer, more efficient access to facilities.
1
4
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Outfall Improvements, Phase 7, DP 7353
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Joint Testing Equipment Temporary Bypass per
Permit
1
Collection System Program
Closed Projects > $1 Million
Project project Titie Expenditures
Number
8451 Collection System Sewer Renovations, Phase 1 $1,195,327
8458 Martinez Sewer Renovations, Phase 6 $4,467,935
8459 Lafayette Sewer Renovations, Phase 14 $4,165,246
8460 Walnut Creek Sewer Renovations, Phase 14 $5,166,227
8461 South Orinda Sewer Renovations, Phase 8 $6,112,090
5
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Collection System Sewer Renovations, Phase 1
DP 8451
Purpose:
To plan for and design sewer replacement projects for collection system
sewers that are near the end of their useful lives and in poor condition.
Work Completed:
Projects in service area included:
Lafayette, Moraga, and Orinda;
Walnut Creek, Alamo, and Diablo;
Martinez, Pleasant Hill, Pacheco, Concord;
Danville and San Ramon; and other jurisdictions; and
Unincorporated areas within Contra Costa County.
1
Martinez Sewer Renovations, Phase 6
DP 8458
Work Completed:
Replaced or rehabilitated up to 9,000 feet of small diameter sewers.
Il
6
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Lafayette Sewer Renovations, Phase 14
DP 8459
Work Completed:
Replaced or rehabilitated up to 12,700 feet of small diameter sewers.
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Walnut Creek Sewer Renovations, Phase 14
DP 8460
Work Completed:
Replaced or rehabilitated up to 9,900 feet of small diameter sewers.
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7
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South Orinda Sewer Renovations, Phase 8
DP 8461
Work Completed:
Replaced or rehabilitated up to 6,400 feet of small diameter sewers.
- 1
NEW,
General Improvements and Recycled Water Programs
Closed Projects > $1 Million
No applicable projects to report for these two programs
1
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8
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Questions
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