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City of San Leandro <br />City Council <br />Meeting Date: March 3, 2025 <br />Agenda Number: 5.b. <br />Agenda Section: CONSENT CALENDAR <br />File Number: 24-586 <br />File Type: Staff Report <br />Adopt a Resolution to Approve and Authorize the City Manager to Negotiate and Approve an Increase in <br />the Cumulative Change Order Amount from 15% to 25% (from $532,582 to $887,637) for Annual Street <br />Paving 21-23 Rehabilitation Phase, Project No. 2022.0050 <br />COUNCIL PRIORITY <br />·Infrastructure <br />SUMMARY <br />This contract provides for the mill and overlay, and full depth reclamation (FDR) of five streets <br />throughout the City. The increase in change order authority will be for additional base repairs and <br />subgrade-cement mixing on Anza Way, necessitated by unforeseen poor subgrade conditions. <br />RECOMMENDATIONS <br />Staff recommends the following action: <br />·Authorize an increase in the Cumulative Change Orders Cap from 15% to 25% (from <br />$532,582 to $887,637) of the Construction Contract <br />BACKGROUND <br />On July 15, 2024, the City Council awarded a contract to DeSilva Gates Construction, LLC for <br />$3,550,550 for the Annual Street Paving 21-23 Rehabilitation Phase, Project No. 2022.0050 and <br />authorized the City Manager to approve individual contract change orders up to 5% and <br />cumulative change orders up to 15% of the original contract amount. <br />This contract is for the pavement rehabilitation phase of a multi-phased project which utilized a <br />Full Depth Reclamation (FDR) process to rehabilitate Anza Way, Beecher Street, and a short <br />section of Dutton Avenue, in addition to the milling and overlaying of Lorraine Avenue and 139th <br />Avenue. Previous project phases that included street sealing and curb ramp construction have <br />already been completed. <br />Pedestrian curb ramps within the street reconstruction limits were also updated to comply with <br />Americans with Disabilities Act (ADA) accessibility standards. <br />Analysis <br />The project is substantially complete, and the contractor is addressing punch list items. However, <br />during the paving of Anza Way, unexpectedly poor subgrade conditions were encountered. <br />Stabilizing the street required significantly higher quantities of hot mix asphalt (HMA) used for <br />base repairs due to the unforeseen softness of the subgrade. Soil investigations conducted <br />during the design phase of the project did not reveal the full extent of these poor subgrade <br />Page 1 City of San Leandro Printed on 9/4/2025