DEPARTMENT
Wastewater Enterprise
AGENDA NO.
6c
MEETING DATE
July 22, 2025
AGENDA ITEM
Public Utilities Commission
City and County of San Francisco
Calendar: Consent Calendar
Project Manager: Brian Carlomagno
Accept Closeout, Approve Modification, and Authorize Final Payment for Contract No.
No. WW- 648, Oceanside Water Pollution Control Plant Building 042 Primary Clarifier Improvements
Summary of Proposed
Commission Action:
Accept work performed by Cal State Constructors, Inc., under Contract No.
WW-648, Oceanside Water Pollution Control Plant Building 042 Primary Clarifier Improvements; approve Modification No. 4 (F inal) decreasing the contract amount by $48,564, and increasing the contract duration by 61 calendar days, for a total contract amount of $6,681,200, and a total contract duration of 963 consecutive calendar days (approximately two years and eight months), to adjust the final contract amount to the value of actual contract quantities completed and adjust the final contract duration to complete commissioning of mechanical equipment replacement work scope; and authorize final payment to the contractor.
Background: The San Francisco Public Utilities Commission (SFPUC) Wastewater Enterprise required repair and replacement of certain wastewater process equipment at the end of its useful life by performing selective hazardous material mitigation and abatement work, selective concrete and equipment demolition work, replacement of the existing primary helical scum skimmers, scum skimmer W3 spray water system including structural support upgrades, primary scum pit bubbler level enclosures, compressed air system, ultrasonic leve l sensors, primary effluent pneumatic operated butterfly valves, and related mechanical, electrical, and instrumentation and controls equipment.
On February 8, 2022, by Resolution No. 22-0024, this Commission awarded Contract No. WW- 648, Oceanside Water Pollution Control Plant Building 042 Primary Clarifier Improvements , to Cal State Constructors, Inc. The original Contract amount was $6,490,014 and original contract duration was 820 consecutive calendar days.
Scope of Contract: The contract work is located at the Oceanside Water Pollution Control Plant in San Francisco.
The contract work consists of:
• Selective hazardous materials work;
• Selective demolition, furnish and install of new primary clarifier helical Agenda Title: No. WW-648, Oceanside Water Pollution Control Plant Building 042 Primary Clarifier Improvements Commission Meeting Date: July 22, 2025
scum skimmer systems and appurtenances;
• Selective demolition, furnish and install of new primary effluent 30-inch butterfly valves with pneumatic operators and appurtenances; • Selective demolition, furnish and install of new air, high pressure and air, instrument piping, tubing, fitting and appurtenances; • Selective demolition and salvage of five (5) existing primary clarifier bubbler level systems. Furnish and install new ultrasonic level system and appurtenances;
• Selective demolition, salvage existing and furnish, install of two (2) primary scum pit bubbler level systems;
• Selective demolition, salvage existing and furnish, install of five (5) flowmeter signal converters and appurtenances;
• Selective demolition, furnish and install of new W3 spray water system piping and appurtenances;
• Connect electrical power supply to all electrically driven equipment and/or components and performing other miscellaneous electrical work as required; and
• Perform concrete spall/crack repair and possibly performing corrosion rehabilitation.
Modifications to the
Contract:
Modification Nos. 1 through 3: Staff issued Modification Nos. 1 through 3 increasing the c ontract amount by $239,750 and increas ing the contract duration by 82 calendar days , within the original 10% contingency, for required structural, mechanical, and electrical modifications to complete the work scope, for a revised C ontract amount of $6,729,764 and revised
contract duration of 902 consecutive calendar days.
Proposed Modification No. 4 (Final): Staff recommends Commission approval to decrease the c ontract amount by $48,564 and increase the contract duration by 61 calendar days , for a total c ontract amount of $6,681,200 and a total contract duration of 963 consecutive calendar days, to complete commissioning of the mechanical equipment replacement work scope.
Funding and Costs: Funding Source: Wastewater Enterprise Capital Improvement Program Project No. 10036398, OSP Condition Assessment Improvements – Part 2 Original Contract Amount: $6,490,014
Original 10% Cost Contingency: $649,001
Modified Increases to Contract Amount: $239,750
Total Current Contract Amount: $6,729,764
Recommended Modification No. 4 (Final) Amount: -$48,564 Total Proposed Final Contract Amount: $6,681,200
Schedule: Notice-to-Proceed Date: May 16, 2022
Original Contract Duration: 820 consecutive calendar days Original 10% Duration Contingency: 82 calendar days
Approved Increase to Duration Contingency: 0 calendar days Agenda Title: No. WW-648, Oceanside Water Pollution Control Plant Building 042 Primary Clarifier Improvements Commission Meeting Date: July 22, 2025
Modified Increases to Contract Duration: 82 calendar days Total Current Contract Duration: 902 consecutive calendar days Recommended Modification No. 4 (Final) Duration: 61 calendar days Total Proposed Contract Duration: 963 consecutive calendar days
Local Business
Enterprise Utilization
and Non-
Discrimination in
Contracting:
The Contract Monitoring Division established a 15% Local Business Enterprise (LBE) subcontracting requirement for this C ontract. The Contractor committed to a 29.39% LBE subcontractor participation with its bid submittal. The Contract Monitoring Division determined the Contractor complied with its Local Business Enterprise subcontracting goal achieving a final subcontractor participation of 29.26%.
Attachment(s): 1. Contract Monitoring Division Memorandum Agenda Title: No. WW-648, Oceanside Water Pollution Control Plant Building 042 Primary Clarifier Improvements Commission Meeting Date: July 22, 2025
Oceanside Water Pollution Control Plant
3500 Great Highway, San Francisco, CA 94132
PUBLIC UTILITIES COMMISSION
City and County of San Francisco
RESOLUTION NO.
WHEREAS, On February 8, 2022, by Resolution No. 22-0024, the Commission awarded Contract No. WW-648, Oceanside Water Pollution Control Plant Building 042 Primary Clarifier Improvements to Cal State Constructors, Inc.; and
WHEREAS, The original c ontract amount was for $6,490,014 and the original c ontract duration was 820 consecutive calendar days; and
WHEREAS, The contract Notice-to-Proceed date was May 16, 2022; and
WHEREAS, Modification Nos. 1 through 3 cumulatively increased the contract amount by $239,750 and increased the contract duration by 82 calendar days for required structural, mechanical, and electrical modifications to complete the work scope, for a revised contract amount of $6,729,764 and revised contract duration of 902 consecutive calendar days; and
WHEREAS, Staff recommends Commission approve Modification No. 4 (Final) to decrease the contract amount by $48,564 and increase the contract duration by 61 calendar days, for a total contract amount of $6,681,200 and a total contract duration of 963 consecutive calendar days , to complete commissioning of the mechanical equipment replacement work scope; and
WHEREAS, Cal State Constructors, Inc., has completed the work scope under Contract No. WW -648, Oceanside Water Pollution Control Plant Building 042 Primary Clarifier Improvements; and
WHEREAS, The Contract Monitoring Division determined that the contractor complied with the established Local Business Enterprise subcontracting participation of 15% for this contract by achieving a final Local Business Enterprise subcontractor participation of 29.39% ; and
WHEREAS, Funds are available from Project No. 10036398, OSP Condition Assessment Improvements – Part 2; now, therefore, be it
RESOLVED, That this Commission hereby accepts the work performed by Cal State Constructors, Inc., under Contract No. WW-648, Oceanside Water Pollution Control Plant Building 042 Primary Clarifier Improvements ; approves Modification No. 4 (Final) decreasing the contract amount by $48,564 and increasing the contract duration by 61 calendar days, for a total contract amount of $6,681,200 and a total contract duration of 963 consecutive calendar days; and authorizes final payment to the Contractor.
I hereby certify that the foregoing resolution was adopted by the San Francisco Public Utilities Commission at its meeting of July 22, 2025.
Director of Commission Affairs
San Francisco Public Utilities Commission
MEMORANDUM
Date: June 04, 2025
To: Brian Carlomagno, SFPUC
Abbas Naghavi, DPW
From: Adriana Duran, CMD
Subject: Closeout for WW-648 – Oceanside Water Pollution Control Plant Building 042 Primary Clarifier Improvements
The Contract Monitoring Division (“CMD”) has determined that Cal State Constructors , Inc. (“CSC”), the LBE prime contractor, has complied with the LBE subcontracting requirements associated with this project.
At the time the project was advertised, an LBE subcontracting participation requirement of
15.00% was established. CSC was awarded the contract in the amount of $6,490,014.00 . At closeout, the final contract amount is $ 6,681,199.75. CSC’s LBE subcontracting participation is as follows:
Firm
LBE Status,
Type and
Size
Scope of Work Original Credited
Contract Participation
Final Credited
Contract Participation
E Mitchell SF LBE-OBE
(Micro) Plumbing Work $880,975.00 13.57% $851,121.32 12.74% US Electric SF LBE-MBE
(Small)
Electrical Work,
System
Integration &
Instrumentation
$204,000.00 3.14% $267,152.97 4.00%
MC Metal SF LBE-MBE
(Micro)
Structural Steel
& Misc. Metals $348,700.00 5.37% $592,528.55 8.87%
Watertight
Restoration Inc.
SF LBE-OBE
(Micro)
Concrete Spall
& Crack Repair $244,032.60 7.31% $244,032.60 3.65%
TOTAL $1,908,175.00 29.39%1 $1,954,835.44 29.26%
1 The CMD award memo issued on December 7, 2021, had a typo in the LBE percentage commitment, listing 33.65% instead of 29.26%. Therefore, the correct LBE percentages are shown at the table above, totaling 29.39%.
City & County of San Francisco
Daniel L. Lurie, Mayor
Office of the City Administrator
Carmen Chu, City Administrator
Contract Monitoring Division
Regina Chan, Director
* LBE Subcontractors are eligible to receive LBE participation for Specially Manufactured Items (“SMI”) at 5% for the purchase of the SMI and 100% credit for the installation of the SMI. Per US Electric’s CMD Form 6, the LBE subcontractor will purchase $200,000.00 of specially manufactured items from Tesco Control. US Electric is eligible for SMI credit at 5% of $200,000, which is $10,000; plus 100% of the installation cost which is $194,000; making the total LBE participation credit for US Electric $204,000 as reflected above.
The LBE participation for some subcontractors were impacted by, according to the Prime and confirmed by CMD Certification Unit, E. Mitchell went out of business due to the owner’s retirement during the contract term, which impacted E. Mitchell’s overall LBE participation.
In addition, Watertight Restoration’s scope fell short for the following reasons. Per SFPUC staff, the concrete repair was on an as -needed basis, and Watertight Restoration was provided the maximum available amount of work. During the project, City Engineers found more steel corrosion than expected, increasing MC Metal’s workload.
To recover and maximize the LBE subcontracting participation on this project, CSC increased the listed subcontractors - US Electric and MC Metal participation to make up for the individual short fall of the overall project.
As a result, CSC’s made good faith efforts to meet its LBE participation commitment at a final closeout percentage of achieving 29.26% instead of 29.39%.
Based on the foregoing, CMD concurs with the closeout of this contract . Should you have any questions, please do not hesitate to contact me at [email protected].