Title
Adopt a Resolution to Approve and Authorize the City Manager to Negotiate and Approve an Increase in the Cumulative Change Order Amount from 15% to 25% (from $532,582 to $887,637) for Annual Street Paving 21-23 Rehabilitation Phase, Project No. 2022.0050
Staffreport
COUNCIL PRIORITY
* Infrastructure
SUMMARY
This contract provides for the mill and overlay, and full depth reclamation (FDR) of five streets throughout the City. The increase in change order authority will be for additional base repairs and subgrade-cement mixing on Anza Way, necessitated by unforeseen poor subgrade conditions.
RECOMMENDATIONS
Staff recommends the following action:
* Authorize an increase in the Cumulative Change Orders Cap from 15% to 25% (from $532,582 to $887,637) of the Construction Contract
BACKGROUND
On July 15, 2024, the City Council awarded a contract to DeSilva Gates Construction, LLC for $3,550,550 for the Annual Street Paving 21-23 Rehabilitation Phase, Project No. 2022.0050 and authorized the City Manager to approve individual contract change orders up to 5% and cumulative change orders up to 15% of the original contract amount.
This contract is for the pavement rehabilitation phase of a multi-phased project which utilized a Full Depth Reclamation (FDR) process to rehabilitate Anza Way, Beecher Street, and a short section of Dutton Avenue, in addition to the milling and overlaying of Lorraine Avenue and 139th Avenue. Previous project phases that included street sealing and curb ramp construction have already been completed.
Pedestrian curb ramps within the street reconstruction limits were also updated to comply with Americans with Disabilities Act (ADA) accessibility standards.
Analysis
The project is substantially complete, and the contractor is addressing punch list items. However, during the paving of Anza Way, unexpectedly poor subgrade conditions were encountered. Stabilizing the street required significantly higher quantities of hot mix asphalt (HMA...
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