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HomeMy WebLinkAbout05.a. Receive report on FY 2020-21 Closeout of Capital Improvement Projects Page 1 of 18
Item 5.a.
CENTRAL SAN
September 21, 2021
TO: ENGINEERING AND OPERATIONS COMMITTEE
FROM: EDGAR J. LOPEZ, CAPITAL PROJECTS DIVISION MANAGER
REVIEWED BY: PHILIP LEIBER, DIRECTOR OF FINANCE AND ADMINISTRATION
JEAN-MARC PETIT, DIRECTOR OF ENGINEERING AND TECHNICAL
SERVICES
ROGER S. BAILEY, GENERAL MANAGER
SUBJECT: RECEIVE REPORT ON FISCAL YEAR 2020-21 CLOSEOUT OF CAPITAL
IMPROVEMENT PROJECTS
Thirteen capital improvement projects were closed in Fiscal Year 2020-21. 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, 2021. 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 2—Maintain a positive reputation
GOAL TWO: Environmental Stewardship
Strategy 1—Achieve 100% compliance in all regulations
GOAL THREE: Fiscal Responsibility
Strategy 1—Maintain financial stability and sustainability
GOAL FOUR: Workforce Development
Strategy 4—Meet or exceed industry safety standards
GOAL FIVE:Infrastructure Reliability
Strategy 1—Manage assets optimally to prolong their useful life, Strategy 2—Execute long-term capital renewal and
replacement program, Strategy 3—Protect personnel and assets from threats and emergencies
GOAL SEVEN:Agility andAdaptability
Strategy 1—Maintain a safe working environment for employees and the public during the COVID-19 pandemic
September 21, 2021 EOPS Regular Committee Meeting Agenda Packet- Page 15 of 34
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ATTACHMENTS:
1. Expenditure Summary
2. Project Descriptions
3. Presentation
September 21, 2021 EOPS Regular Committee Meeting Agenda Packet- Page 16 of 34
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Attachment 1
Expenditure Summary
Fiscal Year 2020-21 Closed Projects
TREATMENT PLANT PROGRAM
DISTRICT AUTHORIZED EXPENDITURES UNDERRUN
PROJECT PROJECT TITLE BUDGET AS OF 6/30/20 OVERRUN
NO. (OVERRUN)
6172 Sludge Blending Tank Repairs $ 776,000 $ 669,539 $ 106,461
7317 Plant Control System Network Upgrade 885,000 916,458 (31,458)
7322 Fire Protection System, Phase 2 1,406,000 1,426,173 (20,173)
7351 Mechanical and Concrete Renovations 14,697,000 15,168,022 (471,022)
7362 Plant Operations Building Seismic Upgrades 6,589,177 6,739,744 (150,567)
7376 Emergency Sludge Loadout Facility Upgrades 3,548,000 2,865,313 682,687
Program Totals $27,901,177 $27,785,249 $115,928
COLLECTION SYSTEM PROGRAM
DISTRICT AUTHORIZED EXPENDITURES UNDERRUN
PROJECT PROJECT TITLE
NO BUDGET AS OF 6/30/20 (OVERRUN)
6679 Cordell Drive Contractual Assessment District $ 123,443 $ 74,406 $49,037
8456 Danville Sewer Renovations, Phase 3 4,280,000 4,253,318 26,682
8462 San Ramon Pump Station Flow Diversion 200,000 202,089 (2,089)
100020 EI Toyonal Sewer Replacement 450,000 377,160 72,840
Program Totals $5,053,443 $4,906,973 $146,470
GENERAL IMPROVEMENTS PROGRAM
DISTRICT AUTHORIZED EXPENDITURES UNDERRUN
PROJECT PROJECT TITLE BUDGET AS OF 6/30/20 OVERRUN
NO. (OVERRUN)
8207 General Security and Access $ 284,777 $ 207,952 $ 76,825
8243 Server Room Relocation $2,000,000 $2,453,653 (453,653)
Program Totals $2,284,777 $2,661,605 ($376,828)
RECYCLED WATER PROGRAM
DISTRICT AUTHORIZED EXPENDITURES UNDERRUN
PROJECT PROJECT TITLE BUDGET AS OF 6/30/20 OVERRUN
NO. (OVERRUN)
7365 Recycled Water Clearwell Repairs $1,700,000 $1,767,602 ($67,602)
TOTAL EXPENDITURES $36,939,397 $37,121,429 ($182,032)
September 21, 2021 EOPS Regular Committee Meeting Agenda Packet- Page 17 of 34
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Attachment 2
Project Descriptions
Fiscal Year 2020-21 Closeouts
TREATMENT PLANT PROGRAM
Project No. Project Title
6172 Sludge Blending Tank Repairs
The work included rehabilitation of the sludge blending tank and lime tanks including piping
rehabilitation, repairs and valve replacement.
7317 Plant Control System Network Upgrade
The primary path for treatment plant data traffic runs over the ethernet system that is neither
redundant nor sufficiently reliable to meet control system standards today. The major elements
completed under the project are installing and configuring industrial type ethernet switches,
installing fiber optic lines for the treatment plant control system and server room, and installing
industrial wireless network.
7322 Fire Protection System, Phase 2
Most of the fire protection system was built in the late 1970s, and the fire alarm control panel was
upgraded in the early 2000s. There are seven existing fire protection systems (alarm, monitoring,
and suppression types) at the treatment plant. The existing fire systems are the primary
notifications to the control-room operators and the occupied buildings in the event of a fire.
Wiring and devices on the fire protection system are problematic and are in frequent need of
repair. Repairs have become extremely complex and difficult; therefore, long-term reliable
improvements to the fire protection system are needed. Staff anticipates the recommended
improvements will be implemented over a multi-year program. Phase 2 replaced gas detection
systems in the Solids Conditioning Building and Standby Facility. Fire alarm system
improvements were also completed in the Plant Operations Building (POB) and other areas of the
treatment plant.
7351 Mechanical and Concrete Renovations
The gates, concrete, and other miscellaneous equipment and surfaces within the Headworks and
Primary Treatment areas are exposed to corrosive environments. Slide gates throughout these
areas are essential to stop and re-direct flows as required for preventive maintenance and for
emergency and wet weather scenarios. Many of the slide gates have unreliable actuators, show
signs of corrosion, have deteriorating seals and wedges, and in some cases, have been
inoperable. Additionally, there are some structures and concrete surfaces that have spalling
concrete, corroded reinforcing bars, and show signs of significant cracking. Some concrete areas
require coating to prevent further corrosion. The project addressed these aging infrastructure
needs and improved the safety and reliability of the existing systems. Major project elements
included repairing concrete in the Headworks Drywell, West Gallery, Structure B, Structure D,
Primary Sedimentation Tanks, Primary Effluent Channel, Influent Structure, and Influent
Structures 1 and 1A, replacing or rehabilitating gates and actuators in the Influent Structure,
Influent Structure 1 and 1A, Pre-Aeration, Primary Sedimentation Tanks, and Primary Effluent
Channel, replacing or rehabilitating existing polyvinyl chloride liner, 60-inch and 72-inch pipelines
at Structures B and C, primary collector chain and flights, embedded rails, grit piping, and effluent
launders, and odor control system repairs have been added in these areas and other nearby
structures.
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September 21, 2021 EOPS Regular Committee Meeting Agenda Packet- Page 18 of 34
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Attachment 2
Project Descriptions
Fiscal Year 2020-21 Closeouts
7362 POB Seismic Upgrades
The purpose was to improve safety and seismic resiliency of the POB. In 2009, a seismic
evaluation was completed for the treatment plant facilities (Martinez Wastewater Treatment Plant
Seismic Vulnerability Assessment of Selected Facilities, December 2009). Included in the
evaluation were recommendations to bring the POB up to date with current seismic design
standards. The POB houses staff for the Plant Operations and Plant Maintenance Divisions, the
main control room, control system servers, Board Room, and Multi-Purpose Room (MPR)which
also serves as an emergency operations center. The MPR is also frequently used by the public.
Central San had plans to construct security improvements to the MPR. This involved
reconfiguring the space and modifying the existing restrooms to improve public access and
comply with the Americans with Disabilities Act (ADA) of 1990. Due to the construction, some of
the workspaces required modifications. Floorplan modifications were done in a cost-effective
manner. POB seismic improvements were completed to meet the Damage Control Performance
Level for occupied buildings. Construction included column strengthening and addition of steel
braces and columns, installation of new steel collector beams, MPR enhancements to provide
ADA compliant restrooms, and improve treatment plant security and access, and Headquarters
Office Building lobby modifications to the reception and permit areas to improve functionality and
access for the public, including the addition of an ADA compliant restroom.
7376 Emergency Sludge Loadout Facility Upgrades
The work included upgrades to the Emergency Sludge Loadout Facility to improve operations and
odor control for daily use. Improvements included a new odor control system, ventilation, and
electrical modifications. Replacement of the hopper slide gates and controls were completed and
the system tested; Central San off-hauled sludge successfully for a one-week duration. The solids
were hauled to Lystek International for processing and for land application use.
COLLECTION SYSTEM PROGRAM
Project No. Project Title
6679 Cordell Drive 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 (Board)for approval.
The Cordell Drive CAD in the Town of Danville installed approximately 386 feet of 8-inch sewer
and infrastructure to serve up to six properties.
8456 Danville Sewer Renovations, Phase 3
The Danville Sewer Renovations, Phase 3 Project replaced or rehabilitated approximately 4,000
feet of small diameter sewers, installed 1,700 feet of new sewers, and abandoned 5,000 feet of
existing sewers in private easements. Abandoning the public sewer required Central San to
coordinate and install 40 private side-sewers to provide sewer service from the public right-of-way
within the Las Lomitas neighborhood in the Town of Danville.
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September 21, 2021 EOPS Regular Committee Meeting Agenda Packet- Page 19 of 34
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Attachment 2
Project Descriptions
Fiscal Year 2020-21 Closeouts
8462 San Ramon Pump Station Flow Diversion
The Dublin San Ramon Services District and East Bay Municipal Utility District Recycled Water
Authority Flow Diversion Project, under a memorandum of understanding and agreement, have
requested diversion of wastewater upstream of the San Ramon Pump Station to the Dublin San
Ramon Services District's collection system during the summer months. A small (100-horsepower
(hp)) pump was rebuilt to operate more reliably at lower flow rates, during diversion times. This
project included removing the existing 250-hp variable frequency drive (VFD), replacing with a
100-hp VFD, and rebuilding the pump and motor.
100020 EI Toyonal Sewer Replacement
The Board authorized a contingency project on February 18, 2021 to immediately respond to
replacing 1,400 feet of public sewers on EI Toyonal in the City of Orinda (City). This work was
expedited to reduce the public impact for the residents and public at or around the neighborhood.
Staff coordinated the efforts with the City and East Bay Municipal Utility District, which also hired
a contractor to install new water mains, to successfully complete the sewer work prior to the
repaving of EI Toyonal.
GENERAL IMPROVEMENTS PROGRAM
Project No. Project Title
8207 General Security and Access
This project improved safety for employees and the public, met safety standards, reduced
exposure to liability, property loss, and operations and maintenance expenses. Additional security
measures for essential public service facilities are required. In 2016, a comprehensive security
study was completed for major facilities that utilized the principles of American Water Works
Association J100 Risk Analysis and Management for Critical Asset Protection methodology.
Findings from this study that are applicable to non-treatment plant facilities and properties were
implemented under this project. Improvements included installing security upgrades to the
Headquarters Office Building's lobby to secure the area and clearly identify the public use of the
building and cameras for surveillance, alarm system upgrades for intrusion, and associated
systems were provided, access control improvements and additional card readers, perimeter
fencing and gate modifications, increased signage, improved lighting, and other miscellaneous
security system improvements, and planning efforts for the replacement and improvements to the
treatment plant security guard shack.
8243 Server Room Relocation
The information technology (IT) servers and equipment previously located in the POB basement
are critical for day-to-day Central San operations, customer service, communication, and data
management. This project was initiated after a major IT server failure at the main network facility
in the POB basement. Several alternatives for relocation of the server room to a more reliable
and resilient location were evaluated, and a new server room attached to the existing POB was
recommended. The project included relocation of the server, network, and related computer
equipment to a new Central San server room facility, built adjacent to the POB, new computer
room air conditioning and fire suppression systems, re-routing of communication cabling and
conduits to the new facility, and migration of existing equipment.
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September 21, 2021 EOPS Regular Committee Meeting Agenda Packet- Page 20 of 34
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Attachment 2
Project Descriptions
Fiscal Year 2020-21 Closeouts
RECYCLED WATER PROGRAM
Project No. Project Title
7365 Recycled Water Clearwell Repairs
The Clearwell structure was installed in 1975 and a cover was installed in the 1990s on the east
cell to reduce chlorine usage, prevent algae growth, and maintain recycled water quality. Since
then, the cover had severely deteriorated, and it was not feasible to only repair the system. This
project activated the west cell for near term use by installing a new modular cover and
maintaining the east cell cover to avoid complete failure. The major elements of the project
included dewatering, cleaning, and disposing of solids from the west cell, installing a new modular
cover on the west cell, repairing the east cell cover as needed, and mechanical modifications to
operate the west cell.
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Attachment 3
FISCAL YEAR 2020-21
CLOSED CAPITAL PROJECTS
Engineering and Operations Committee Meeting
September 21, 2021
Edgar J. Lopez, P.E.
Capital Projects Division Manager
TOTAL EXPENDITURES
BY CAPITAL PROGRAM
Program Program Underrun
Expenditures (Overrun)
Treatment Plant $27,785,249 $115,928
Collection System $4,906,973 $146,470
General Improvements $2,661,605 ($376,828)
Recycled Water $1,767,602 ($67,602)
Total Expenditures: $37,121,429 ($182,032)
I;I 2
CENTRALSAN
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TREATMENT PLANT PROGRAM
CLOSED PROJECTS > $1 MILLION
Project Project Title Expenditures
Number
7322 Fire Protection System, Phase 2 $1,426,173
7351 Mechanical and Concrete Renovations $15,168,022
7362 Plant Operations Building (POB)Seismic $6,739,744
Upgrades
7376 Emergency Sludge Loadout Facility $2,865,313
(ESLF) Upgrades
3
CENTRALSAN
FIRE PROTECTION SYSTEM, PHASE 2
DISTRICT PROJECT (DP) 7322
Purpose:
• Most of the fire protection systems were built in the
1970s and some are in need of repair, upgrades,
and replacement.
Major Work Completed:
• Replacement of the Solids Conditioning Building
(SCB) and Standby Facility gas detection systems.
• POB upgrades to the fire protection system.
• Foam suppression for emergency tanks.
• Upgraded network capabilities for monitoring.
CENTRALSAN
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FIRE PROTECTION SYSTEM, PHASE 2
DP 7322
R,
•
New suppression trailer for
emergency tanks _,-
Gas detection at SCB boilers
s
CENTRALSAN
MECHANICAL AND CONCRETE
RENOVATIONS, DP 7351
Purpose:
• To rehabilitate or replace mechanical systems in the
primary process of the treatment plant, as well as existing
concrete structures with leaks or severe cracking.
Work Completed:
• Replaced several large gates and actuators.
• Replaced or rehabilitated the 60" and 72" pipelines at
associated structures at the primary sedimentation tanks
(PSTs), including concrete coatings.
• Repaired concrete in 10 structures between Headworks
and the PSTs.
•., Installed new PSTs gates and odor control improvements.
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MECHANICAL AND CONCRETE
RENOVATIONS, DP 7351
Bypass pumping at the PSTs
New gates at PSTs
� '
CENTRALSAN
POB SEISMIC UPGRADES, DP 7362
Purpose:
• Improve safety and update seismic criteria for the POB.
Manor Work Completed:
• Major building modifications, including column
strengthening, new steel braces, and collector beams.
• Multi-Purpose Room (MPR) improvements for American
with Disabilities Act compliance and audio visuals.
• Security improvements, lighting, and minor tenant
improvements.
• Headquarters Office Building lobby and permit counter
remodeled.
CENTRAL SAN
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POB SEISMIC UPGRADES, DP 7362
MPR seismic retrofit
Collector beam
welding and
restored 9
CENTRALSAN
ESLF UPGRADES, DP 7376
Purpose:
• Modify and improve the facility for daily operations to off-haul
solids from Central San.
Work Completed:
• Improved odor control and equipment.
• New gates and controls for sludge loading.
• New ventilation in the facility and electrical and controls
modifications.
• Tested and performed a week of sludge hauling to Lystek
International in Fairfield, CA.
40V i
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CENTRALSAN
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ESLF UPGRADES, DP 7376
Testing and loading sludge
for disposal
New odor control � „
CENTRALSAN
COLLECTION SYSTEM PROGRAM
CLOSED PROJECTS > $1 MILLION
Project project Title Expenditures
Number
8456 Danville Sewer Renovations, Phase 3 $4,253,318
iz
CENTRALSAN
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DANVILLE SEWER RENOVATIONS,
PHASE 3, DP 8456
Purpose:
• Replace/renovate deteriorating and high maintenance
sewers that have reached the end of their useful life.
Work Completed:
• Replaced or rehabilitated approximately 4,000 feet of
small diameter sewers.
• Installed 1,700 feet of new sewers.
• Abandoned 5,000 feet of existing sewers in private
easements.
• Abandoning the public sewer required coordination
and installation of 40 private side-sewers at Las
Lomitas neighborhood in the Town of Danville.
E13
CENTRALSAN
DANVILLE SEWER RENOVATIONS,
PHASE 3, DP 8456
Pipe install for HDD'd side sewer Pit-launched HDD drill rig
LAW
Open cut side sewer relocation Sewer main open trench
14
CENTRALSAN
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GENERAL IMPROVEMENTS PROGRAM
CLOSED PROJECTS > $1 MILLION
Project project Title Expenditures
Number
8243 Server Room Relocation $2,453,653
15
CENTRALSAN
SERVER ROOM RELOCATION, DP 8243
Purpose:
• Provide a safe, purpose built, and reliable facility.
Work Completed:
• Relocation of server, network, and related computer
equipment to a new Central San server room facility,
built adjacent to POB.
• New computer room air conditioning and fire
suppression systems.
• Re-routing of communication cabling and conduits to
the new facility.
• Migration of existing equipment.
CENTRALSAN
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SERVER ROOM RELOCATION, DP 8243
0
_ J'
New facility built at POB
New server racks
17
CENTRALSAN
RECYCLED WATER PROGRAM
CLOSED PROJECTS > $1 MILLION
Project project Title Expenditures
Number
7365 Recycled Water Clearwell Repairs $1,767,602
18
CENTRALSAN
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RECYCLED WATER CLEARWELL REPAIRS,
DP 7365
Purpose:
• Provide continuous and quality recycled water.
Work Completed:
• Dewatered, cleaned, and disposed of solids from the
west cell.
• Installation of a new modular cover on the west cell.
• Repaired east cell cover as needed.
• Mechanical modifications to operate the west cell.
19
CENTRALSAN
RECYCLED WATER CLEARWELL REPAIRS,
DP 7365
i
Repairing west cell liner
East and west covers
20
CENTRALSAN
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QUESTIONS?
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