San Mateo City Council
May 6, 2024

Att 1 - Underground Flow Equalization System - Anderson Pacific - Contract Change Order Summary (as of 04/04/2024) Table 1. Contract Change Orders that Utilized Contengecy Reserve CCO ID Execution
Date
Price Details of Change
1 1/4/2021 $3,645.41 Addition of 9 Sensors to the tipping buckets 2 6/2/2021 $19,250.14 Additional temporary traffic control measures for the Event Center 3 7/20/2021 ($52,338.58) Additional actuator support beams for the Northern Diversion Structure and Credit for reduced dewatering, 5 9/23/2021 $45,466.22 Additional Electrical Breaker and installation of Baker tank 6 9/23/2021 $497,875.00 Addressing of Pipe buoyancy issues and unusual soil conditions during microtunneling 7 3/2/2022 $547,128.70 Additional manhole shoring, excavation and backfilling to avoid onsite utility conflicts at Delaware / 25th Ave. 8 5/16/2022 $264,129.00 Additional electrical upgrades, 20 ft of Microtunneling on Delaware and construction of additional Manhole and other minor changes
9 8/23/2022 $105,335.07 HVAC Equipment and Controls Modification, additional manhole installation 10 1/4/2023 $219,092.24 Differing subsurface site conditions, additional Level Sensor installation, additional CIPP lining, additional treated soil cost and other changes
11 1/4/2023 $1,044,154.39 Differring subsurface site conditions and additional Stormwater Bypass System 12 5/18/2023 $289,825.80 Additional work associated with foul air vent, additional combination air release valve and CIPP Price Escalation cost
13 5/31/2023 $125,739.67 Extension of Fiber Optic Conduit on 28th Ave 14 7/27/2023 $250,000.00 Additional Station 1 Landscaping restoration 15 8/24/2023 $95,140.97 Additional Force Main Re-routing and inspection and CCTV, resoration of fence and other changes 16 11/8/2023 $134,410.35 Additional Slide Gate Conduit and FRP Duct Support Hardware, Pump Rental 17 1/2/2024 $152,027.34 Traffic Signal Conduit Restoration and Rerouting 18 3/4/2024 $773,380.04 Additional porous concrete paving, additional Equipment Training, additional tree removal and disposal, and other changes
19 3/6/2024 $162,324.09 Additional excavation and other costs due to differing subsurface site conditions Total $4,676,585.85
Table 2. Contract and Change Orders that Did Not Utilize Contengecy Reserve CCO ID Execution
Date
Price Details of Change
Original Contract $55,277,330.00 UFES Construction contract CCO 4 8/18/2021 $3,877,875 Scope addition from Delaware Street Relief Sewer project Total $59,155,205.00 Revised UFES Construction contract