DEPARTMENT Infrastructure Division
AGENDA NO.
6f
MEETING DATE
August 27, 2024
AGENDA ITEM
Public Utilities Commission
City and County of San Francisco
Calendar: Consent Calendar
Project Manager: Alisha Reinhardt
Accept Closeout and Authorize Final Payment for Contract No. WD-2871, Sunol Valley Water Treatment Plant and Chlorination Facility Aqua Ammonia Structural Repairs and Tank Replacement
Summary of
Proposed
Commission Action:
Accept work performed by Cal State Constructors under Contract No. WD- 2871, Sunol Valley Water Treatment Plant and Chlorination Facility Aqua Ammonia Structural Repairs and Tank Replacement , for a total contract amount of $2,045,523 and a total contract duration of 787 consecutive calendar days; and authorize final payment to contractor.
Background: In 2018, San Francisco Public Utilities Commission (SFPUC) staff performed a s eismic assessment of the SFPUC Water Enterprise Sunol Valley Water Treatment Plant and Chlorination Facility that supports its water distribution and delivery system in the East Bay. As a result of the assessment, staff determined that the aqua ammonia tank supports and appurtenant structural elements at the S unol Valley Water Treatment Plant and S unol Valley Chlorination Facility required repairs and replacement to ensure structural reliability and adherence to Level of Service goals associated with seismic reliability and as required by Alameda County. Staff also determined that replacement of the existing aqua ammonia tanks was necessary to ensure that the SFPUC meets its water quality Level of Service goal.
On November 9, 2021, by Resolution No. 21-0167, this Commission awarded Contract No. WD-2871, Sunol Valley Water Treatment Plant and Chlorination Facility Aqua Ammonia Structural Repairs and Tank Replacement to Cal State Constructors. The original contract amount was $1,769,014, and the original contract duration was 547 consecutive calendar days.
On March 14, 2023, by Resolution No. 23- 0054, this Commission approved an increase to the cost contingency of $250,000 and an increase to the duration contingency of 120 calendar day for hazardous waste cleanup and disposal of the existing aqua ammonia tanks and to install additional davit arms and platform ladders for safe access as well as for delays associated with fabrication of new stainless steel aqua ammonia tanks, for a total amount limit of up to $2,195,915, and a total duration limit of up to 721 consecutive calendar days.
On January 9, 2024, by Resolution No. 24- 0007, this Commission approved an increase to the duration contingency of 120 calendar days for the Agenda Title: WD-2871, Sunol Valley Water Treatment Plant and Chlorination Facility Aqua Ammonia Structural Repairs and Tank Replacement
Commission Meeting Date: August 27, 2024
procurement of new actuators that include position indicators similar to the existing valve actuators, for a total possible contract duration of up to 841 consecutive calendar days, with no change to the contract amount.
Scope of Contract: The contract work location is in Sunol, California at the Sunol Valley Water Treatment Plant and Chlorination Facility.
The contract work consists of furnishing and installing:
• Aqua ammonia chemical storage tanks
• Ultrasonic level sensors
• Vacuum breaker valve assemblies
• Electrically -actuated ball valves
• Ammonia gas detection and alarm system
• City-furnished tuning fork density meter
• Modifications to Alameda Siphon No. 1 aqua ammonia injection vault
• Overhead canopy structure upgrades
Modifications to the
Contract:
Modifications Nos. 1 - 3: Staff issued Modification Nos. 1-3, increasing the contract amount by $286,989 and increasing the contract duration by 120 consecutive calendar days, in accordance with Resolution No. 23-0054, for a total contract amount of $2,056,003 and a total contract duration of 667 consecutive calendar days.
Modification Nos. 4 – 5 (Final): Staff issued Modification Nos. 4-5 (Final), decreasing the contract amount by $10,480 and increasing the contract duration by 120 consecutive calendar days, in accordance with Resolution No. 24-0007, for a total contract amount of $2,045,523 and a total contract duration of 787 consecutive calendar days, for procurement of new actuators that include position indicators similar to the existing valve actuators, and to adjust bid item quantities to reflect the installed work.
Funding and Costs: Funding Source: Water Enterprise Capital Improvement Fund Project No. 10036522, Easy Bay Field R&R / 10015061, SVWTP & East Bay Fields / 10032938, Sunol PAC Units / 10036524, SVWTP R&R / 10029996, Water Treatment
Original Contract Amount: $1,769,014
Modification Nos. 1 – 5 (Final) Amount: $276,509
Total Final Contract Amount: $2,045,523
Schedule: Notice-to-Proceed Date: September 28, 2022
Original Contract Duration: 547 consecutive calendar days Modification Nos. 1 – 5 (Final) Duration: 240 days
Total Final Contract Duration: 787 consecutive calendar days
Agenda Title: WD-2871, Sunol Valley Water Treatment Plant and Chlorination Facility Aqua Ammonia Structural Repairs and Tank Replacement
Commission Meeting Date: August 27, 2024
Local Business
Enterprise
Participation and
Non-Discrimination
in Contracting:
The Contract Monitoring Division established a 9% Local Business Enterprise (LBE) subcontracting requirement for this contract. The contractor committed to 19.01% LBE participation with its bid submittal.
CMD has determined that the Contractor complied with its LBE subcontracting requirement by achieving a final LBE subcontractor participation of 28.36% for this Contract.
Attachment(s): 1. Contract Monitoring Division Memorandum Agenda Title: WD-2871, Sunol Valley Water Treatment Plant and Chlorination Facility Aqua Ammonia Structural Repairs and Tank Replacement
Commission Meeting Date: August 27, 2024
PUBLIC UTILITIES COMMISSION
City and County of San Francisco
RESOLUTION NO.
WHEREAS, Following a seismic assessment, San Francisco Public Utilities Commission (SFPUC) staff determined that repairs and replacement of its Sunol Valley Water Treatment Plant and Chlorination Facility was necessary to support its water delivery system and water quality level of service goals associated with seismic reliability and as required by Alameda County; and
WHEREAS, On November 9, 2021, by Resolution No. 21-0167, the Commission awarded Contract No. WD -2871, Sunol Valley Water Treatment Plant and Chlorina tion Facility Aqua Ammonia Structural Repairs and Tank Replacement, to Cal State Constructors; and
WHEREAS, The original contract amount was for $1,769,014 and the original contract duration was 547 consecutive calendar days; and
WHEREAS, March 7, 2022, was the construction contract Notice-to-Proceed date; and
WHEREAS, On March 14, 2023, by Resolution No. 23- 0054, the Commission approved an increase of 120 calendar days to the duration contingency for a total duration limit of up to 721 consecutive calendar days, with no change in amount; and
WHEREAS, Modifications Nos. 1 – 3 increased the contract amount by $286,989 and the contract duration by 120 consecutive calendar days, in accordance with Resolution No. 23-0054, for a total contract amount of $2,056,003 and a total contract duration of 667 consecutive calendar days; and
WHEREAS, On January 9, 2024, by Resolution 24- 0007, the Commission approved an increase of 120 days to the duration continency for a total duration limit of up to 841 consecutiv e calendar days, with no change in amount; and
WHEREAS, Modification Nos . 4 – 5 (Final) increased the contract duration by 120 consecutive calendar days, in accordance with Resolution No. 24- 0007, for procurement of new actuators that include position indicators similar to the existing valve actuators, and to adjust bid item quantities to reflect the installed work; and
WHEREAS, Contractor, Cal State Constructors, has completed its work under Contract No. WD-2871, Sunol Valley Water Treatment Plant and Chlorination Facility Aqua Ammonia Structural Repairs and Tank Replacement; and
WHEREAS, Contract Monitoring Division established a Local Business Enterprise (LBE) subcontracting participation of 9% for this C ontract, the C ontractor committed to LBE participation of 19.01% with its bid submittal and made a good faith effort to comply with the LBE subcontracting requirement by achieving 28.36% final LBE subcontractor participation for this Contract; and
RESOLVED, That this Commission hereby accepts work performed by Cal State Constructors under Contract No. WD-2871, Sunol Valley Water Treatment Plan and Chlorination Facility Aqua Ammonia Structural Repairs and Tank Replacement , for a total contract amount of
$2,045,523, and a total contract duration of 787 consecutive calendar days; and authorizes final payment to the contractor.
I hereby certify that the foregoing resolution was adopted by the Public Utilities Commission at its meeting of August 27, 2024
Director of Commission Affairs ,
San Francisco Public Utilities Commission
City & County of San Francisco
London N. Breed, Mayor
Office of the City Administrator
Carmen Chu, City Administrator
Contract Monitoring Division
Stephanie Tang, Director
MEMORANDUM
Date: July 10, 2024
To: Alisha Reinhardt, SFPUC
From: Jason Chow, CMD
Subject: Closeout for WD-2871 Aqua Ammonia Structural Repairs and Tank Replacement CMD’s Closeout Review
The Contract Monitoring Division (“CMD”) has determined that Cal State Constructors (“Cal State”), the prime contractor for this project, has complied with the Chapter 14B LBE subcontracting requirements associated with this project.
At the time the project was advertised, an LBE subcontracting requirement of 9% was established.
Cal State’s Subcontractor List (Document 00 43 36) reflected an LBE subcontractor participation commitment of
19.01%. Cal State was awarded the contract in the amount of $1,773,514. After six (6) change orders, the final contract amount is $2,045,523.18 At closeout, the LBE subcontracting participation is as follows:
Firm Status Scope of Work
Original Credited
Contract
Participation
Final Credited
Contract Participation
E. Mitchell SF LBE- OBE
(Micro) Plumbing $77,095 4.36% $87,410.97 4.27%
M C Metal
Inc.
SF LBE- MBE
(Micro) Structural Steel $182,700 10.32% $168,100.00 8.22% R&S
Construction
Management
SF LBE- MBE
(Micro) Concrete Work $76,570 4.33% $66,047.00 3.23%
Bay Tech
1Engineering
SF LBE- MBE
(Micro)
Electrical and
Instrumentation -- -- $180,800.00 8.84%
McGill’s
2Security
SF LBE- MBE
(Micro)
Security Guard
Services -- -- $77,680.00 3.80%
TOTAL $336,365 19.01% $580,037.97 28.36%
In good faith, Cal State added two (2) LBE firms; Bay Tech and McGill (referenced above). By doing so, Cal State exceeded its original overall LBE commitment percentage from time of bid.
Based on the foregoing, CMD concurs with the closeout of this contract.
1 Bay Tech, an LBE firm, was added onto Cal State’s team after contract award. 2 McGill, an LBE firm, was added onto Cal State’s team after contract award.