Progress Through: June 30, 2024
Quarterly Progress Report
San Mateo Clean
Water Program
for the
Wastewater
Treatment Plant
Projects
2nd Quarter Report April 1, 2024
to June 30, 2024
Submitted on: July 22, 2024
Active Wastewater Treatment Plant Projects
46T003 WWTP Nutrient Removal and Wet Weather Flow
Management Upgrade
Project Description:
The WWTP Upgrade and Expansion Project will replace aging infrastructure, provide capacity for wet weather flows, comply with regulatory requirements, enhance reliability, and produce a higher quality effluent that meets current and future permit requirements and Title 22 recycled water quality. Producing a higher quality effluent will enable the City to develop a water reuse Program.
GMP3 – Contract
Contractor Sundt
Award Date 9/21/2020
Construction NTP 9/22/2020
Duration (calendar days) 1584
Contracted Completion Date 1/23/2025
Total Original Contract Amount $379,880,747.00
Revised Contract Amount $383,790,833.00
Original Contingency Amount $13,900,000.00
Revised Contingency Amount $24,336,910.00
Forecast Completion Date 10/23/2025
Current Contracted Amount $405,134,195.00
Actual Expended $371,774,844.00
Current Period Activities
Project/Construction Management
Coordinating the Special Inspections Services
Providing Construction Inspection Services
Reviewing and recommending approval of change orders
Administering the Consultant and Subconsultants contracts Assisting with the Startup and Comm issioning training of Plant Staff Monthly WWTP update meeting with Foster City management team.
April through June 2024 P A G E 10
SAN MATEO CLEAN WATER PROGRAM
QUARTERLY REPORT
Q2 2024
Project Inside
Project Manager Leswin DCunha
Project Type Wastewater System
Phase Construction
GMP1 – Contract
Contractor Sundt
Award Date 5/6/2019
Construction NTP 6/4/2019
Duration (calendar days) 1124
Contracted Completion Date 7/1/2022
Total Original Contract Amount $33,098,178.00
Contingency Amount $1,725,000.00
Substantial Completion Date 2/1/2023
Current Contracted Amount $34,783,550.00
Actual Expended $31,630,697.00
GMP2 – Contract
Contractor Sundt
Award Date 5/4/2020
Construction NTP 5/5/2020
Duration (calendar days) 619
Contracted Completion Date 01/14/2022
Total Original Contract Amount $17,716,049.00
Contingency Amount $1,645,000.00
Acceptance Date 3/6//2024
Current Contracted Amount $17,963,767.00
Actual Expended $17,206,534.00
Engineering Design/ Services During Construction
Interpretive Signage -:Contractor is in the process of procuring the signage. ESDC: HDR continued review of submittals and RFIs on GMP 3; development of design change notices; onsite and remote support by Resident Engineer. .HDR continuing the preparation of electronic Operations and Maintenance Manuals
Permitting:
Bay Area Air Quality Management District (BAAQMD)
A/C 30448 (Liquid Processes)
Because the A/C renewal request has been submitted, the City can continue construction/operation under the conditions of the existing permit until a new A/C permit is issued.
A/C 30449 (Generators)
Because construction is complete and source test data submitted, the City does not need to renew the A/C. The Source Test data was approved 10/26/23. The next step, issue the Permit to Operate (P/O). In the interim, the City can operate the generators under the conditions of the A/C permit.
Public Outreach
PM/CM and the CWP Public Outreach Lead coordi nated on regular project updates to the website, newsletter, social media, etc.
Construction
GMP1
Project close out is almost completed.
GMP-2
Project is closed out and accepted.
GMP-3
The contracted completion date for GMP3 is January.23,2025. However, in mid-January 2024, the City was informed by the contractor that the procurement of the electrical panels required for programming the SCADA have been impacted by the supply change issues as a result of the Covid pandemic, and the leak testing of the basins taking longer than originally planned, the project end date is now projected to be October 2025. The Contractor and the City are working together to minimize the potential delays and reduce this potential completion date extension. The Contractor and the City are also discussing the responsibility of the Contractor in covering the increase in management costs as a result of this schedule change.
Commissioning meetings were held to continue discussing start-up activities, including roles and responsibilities.
Yard piping is complete except for final connecti on of the force mains to the Headworks schedule for January 2025.
Continued to install Electrical (gear including cabinets, breakers, switches, conduit and wiring) and Mechanical Equipment (piping with structural supports, motors and pumps) in Areas 51 (Headworks), 52 (Primary Clarifiers),53 (Bio- Actiflo), 55 (BNR) and 56 (MBR).
April through June 2024 P A G E 11
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QUARTERLY REPORT
Q2 2024
Continued installation of the exterior siding, and ceiling in Area 80 (Admin. Building) projected to be completed in July 2024. Pending final approval from Building and Fire Departments. Continued installation of interior work for the War ehouse project to be completed by end of July 2024.
Pending final approval from Building and Frie Departments. Continued improvements to the existing Sodium Hypochlorite Day and Bulk Storage Tanks, and pumping systems.
Continued improvements to the existing S odium Bisulfite Tanks and Pumping system. Continued improvements to the existing Chlorine Contact Basins. Parcel Map Recorded April 11, 2024
Next Period Activities
Project/Construction Management
HDR’s to continue to provide ESDC services incl uding development of process O&M manuals, process training, expanded discipline-specific Resident Engineer services, and related known scope reflected in the contingency budget.
Engineering Design/Services During Construction
ESDC: HDR to continue to provide onsite resident engineering services. Permitting
Coordination with Building and Fire Departments for Temporary Occupancy for Admin Building and Warehouse
Public Outreach
Provide project updates to the CWP Public Outreach Lead for monthly newsletter, website, and social media updates.
Continue as-needed support in response to resident queries via the communication hotline. Construction
GMP-1
Close out project
GMP-2
Completed.
GMP-3
Continue to install Electrical (gear including cabinets, breakers, switches, conduit and wiring) and Mechanical Equipment (piping with structural supports, motors and pumps) in Areas 51 (Headworks), 52 (Primary Clarifiers),53 (Bio-Actiflo), 55 (BNR) and 56 (MBR). Continue coordination with Building and Fire Departm ent for Temporary Occupancy .for Admin. Building.
Work on final punch list items.
Continue coordination with Building and Fire Depart ment for Temporary Occupancy .for Warehouse. Work on final punch list items
Continue the improvements to the existing Sodium Hypochlorite and Sodium Bisulfite systems. Continue improvements to the Chlorine Contact Basins
April through March 2024 P A G E 12
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QUARTERLY REPORT
Q2 2024
Risks and Opportunities
Cal Water’s New Potable Water Main Extension: Completed PG&E’s New Primary Service: Completed
Relocation of PG&E’s Utilities from Detroit Drive: Completed
Financial Status
Current update shows an overrun ($39.47M) of original budget.
Millions
Budget $532.71
Actual Cost to date $506.92
Estimate at Completion $572.18
Schedule Status
As part of re-baseline efforts, the current forecast as of June 2024 , shows project completion to be in October 2025.
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QUARTERLY REPORT
Q2 2024
46T009 IAP Package II
Project Description:
Replace and repair aging infrastructure at the WWTP by adding screening, flexibility, and redundancy for WWTP solids processes. The project includes: (1) Mechanical bar screen and repair of concrete wall at the IJB; (2) Effluent PS #1 pumping and piping improvements; (3) replace two of the oldest pumps in PS #1; (4) Cake pumping system: add second cake pumping system; and (5) Second cake hopper system: add a second cake hopper, slide gate, access walkway, and platform.
Current Period Activities
Project/Construction Management
Coordinated City negotiations with Contractor for time extension / delays.
Worked with Contractor on Cake pump issues.
Engineering Design/ Services During Construction
(Various)
Stantec ESDC is ongoing through the remainder of its construction period. Permitting
No activities this period.
Public Outreach
No activities this period.
Construction
Immediate Action Projects, Package II (IAP II)
Replaced one of the mitered pipes, Analyzing if addi tional measures to resolve the pressure issue are needed.
Replace Sensors in Hopper on going test ing to see if it functions properly Next Period Activities
Project/Construction Management
Continued change management support.
Engineering Design and Engineering Services During Construction Stantec ESDC is ongoing through the remainder of its construction period. Continue review of submittals and RFI.
Permitting
No activities this period.
April through June 2024 Page 35
SAN MATEO CLEAN WATER PROGRAM
QUARTERLY REPORT
Q2 2024
Project Inside
Project Manager Tyler Kirkendall
Project Type Wastewater System
Phase Construction
Design Firm Stantec, HDR
IAP II – Contract
Contractor Myers & Sons
Award Date 2/11/2019
Construction NTP 2/19/2019
Duration (calendar days) 848
Contracted Completion Date 6/14/2021
Contract Amount $6,340,000
Contingency Amount $1,144,000
Forecast Completion Date 1/21/2025
Current Contracted Amount $7,167,599
Actual Expended $7,142,099
Public Outreach
No activities this period.
Construction
Immediate Action Projects, Package II (IAP II)
Analyze if additional measures such as pipe suppor ts, and polymer ring are needed in order to resolve the pressure issue.
Risks and Opportunities
Sludge Cake Hopper No. 1 has not su ccessfully completed start-up testing. Contractor working to identify issue affecting Cake Pump No. 1 and requested both design engineer and Vendor assistance in their troubleshooting of Cake Pump No. 1. Design Engineer provided new sludge cake measurement technology selection in DC 8, which was issued to the Contractor in September. City contracted with a third party to provide recommendations for fixing the Cake pump. The third party has recommended removal of welded pipe and installation of new piping. The contractor has replaced the miter welded pipe for one of the pumps , analysis is ongoing to determine if additional measures are needed. Delays to the project by sludge cake pumping system will result in significant delays to the project.
Financial Status
Current update shows an overrun ($5.73 M) of original budget.
Millions
Budget $13.02
Actual Cost to date $13.34
Estimate at
Completion
$18.75
Schedule Status
Project schedule temporary on hold while issues are being resolved. Anticipates construction to be completed by January 21, 2025
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QUARTERLY REPORT
Q2 2024
46T010 IAP Package III
Project Description:
Upgrade aging infrastructure and increase reliability for the effluent PS at the WWTP. Improvements include perform hydraulic analysis on the effluent PS and flow meters; replace MCCs P1, P2, P3, and P4 in the Main Structure Building; add variable-frequency drives (VFDs) and check valves on stormwater pumps; replace check valves (3) for dry weather pumps; replace MCCs/VFDs (4) and control panels (4) for dry weather pumps; and replace doors (3) and windows (10), repair roof, and add HVAC for the PS.
Current Period Activities
Project/Construction Management (City/TBD)
Project Bid opened on April 6, 2023
Project awarded to Mountain Cascade for $11,703,696
EAC revised to $17,711,486.
Project management by City Sta ff with Assistance from Jacobs Construction Management by Tanner Pacific
Engineering Design/ Services During Construction (HDR)
Review of Submittals and RFI’s
Construction
S tarted potholing to identify utilities and determine if there are any unknown conflicts.
Next Period Activities
Project/Construction Management (City/Tanner Pacific)
Construction Management by Tanner Pacific.
Engineering Design/ Services During Construction
HDR to continue EDSC.
Construction
Continue construction of Site Waste Pump Stat ion and Improvements to the Effluent Pump Station Start replacement of Digester piping.
Risks and Opportunities
Rescoping the project push out the completion date of the project.
April through June 2024 P A G E 38
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QUARTERLY REPORT
Q2 2024
Project Inside
Project Manager TBD
Project Type Wastewater System
Phase Engineering
Financial Status
The current update shows an overrun ($15.24 M) of the original budget. The original budget was an estimate to be used as a place holder that was set prior to hav ing any knowledge of the project scope of work. The overall program carried a large contingency to compensate for this unknown and a portion of those contingencies are being used to offset this overrun. The current estimate is based on a defined scope of work.
Budget
$2.47
million
Actual Cost to
date
$3.65
million
Estimate at
Completion
$17.71
million
Schedule Status
Current forecast shows fina l completion in May 2025.
April through June 2024 P A G E 39
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QUARTERLY REPORT
Q2 2024
46T090 Annual Major Component WWTP
Project Description:
Maintain reliable plant operations to meet regulatory permit requirements and repair and replace critical WWTP
infrastructure. The operations and maintenance team maintain an active list of potential projects that are implemented as funds are available.
Current Period Activities
Project/Construction Management (City/ TBD)
City to manage with City staff the Project Management with assistance from Jacobs.
AMC project
Update WWTP Biosolids and Energy Management Plan - Requests for proposal has been issued .
Proposal due in August 2024
Digester 1 Improvements - waiting for biosolids report to be completed. Centrifuge and Centrifuge Feed Pump Replacement - waiti ng for biosolids report to be completed. Solids Handling Systems I&C Improvements - wait ing for biosolids report to be completed. Digester Transfer Pump Project – Awarded contractor currently procuring equipment. 3 Water Pumping Improvements – design ongoing anticipated November 2024 award DAFT Corrosion Improvements – recommendations for improvements being analyzed by City staff. Digest 2 Mixer Repair/Replacement – quote for repair being analyzed to determine in repair or replacement is the most cost-effective solution.
Permitting (Various)
None
Construction
Digester Transfer Pump Project was awarded in No vember 2023. The contractor is currently procuring equipment. Minor electrical work has started
Next Period Activities
Project/Construction Management (City/ Tanner Pacific)
Begin CM on the Digester Transfer Pump Project
Engineering Design/ Services During Construction
Design Consultants providing EDSC fo r the Digester Transfer Pump project. .Monthly WWTP update meeting with Foster City management team. for the AMC projects.
Permitting
None
Construction
Begin on site Construction on the Digester Transfer Pump project. Risks and Opportunities
AMC 36 Centrifuge Conveyor Replacement is on hold.
April through June 2024 P A G E 41
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QUARTERLY REPORT
Q2 2024
Project Inside
Project Manager TBD
Project Type Wastewater System
Phase En gineering
Financial Status
Project shows EAC over budget.by $4.0 million The original budget was an estimate to be used as a place holder that was set prior to having any knowledge of the project scope of work. The overall program carried a large contingency to compensate for this unknown and a portion of those contingencies are being used to offset this overrun. The current estimate is based on a defined scope of work.
Millions
Budget $8.92
Actual Cost to date $1.81
Estimate at Completion $12.92
Schedule Status
AMC 6 +23 was completed in November 2022.
AMC Digester 2 Mixer Repair/Replace, quote to re pair mixer is being evaluated, approximately 6 months without Digester 2 online.
AMC Digester Transfer Pump was awarded in No vember 2023 to Contractor procuring equipment. All other AMC projects are in the design or predesign phase.
April through June 2024 P A G E 42
Completed Projects
Wastewater Treatment Plant Projects
Updated to latest values from EDEN (January 2020)
Name
Start Date
Finish
Date
Actual Cost
469948: SCADA Immediate Projects: Phase 2 (IAP) 1/2/2015 11/25/2015 $1,524,717 469962: Short-Term MCC Replacement Project (IAP) 1/2/2015 11/25/2015 $49,628 469973: Secondary System: Immediate Projects: SCs 1-4 and return- activated sludge Pump Values (IAP)
1/2/2015 11/25/2015 $426,918
469975: Solids: Immediate Projects: GT 1&2 (IAP) 1/2/2015 11/25/2015 $372,358 469976: Immediate Projects: Boiler Replacement 1/2/2015 4/29/2016 $475,296 469978: Solids Building: Immediate. Projects: Centrifuge Hoist Project (IAP) 1/2/2015 11/25/2015 $2,410 46T002 IAP Package I 8/1/ 2018 8/28/19 $18,621,868
TOTAL $21,472,951
April through June 2024 P A G E 43
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QUARTERLY REPORT
Q2 2024