Title
Staff Report for a Resolution to Award a Construction Contract to DeSilva Gates Construction, L.P. for the Annual Overlay / Rehabilitation 2015-16 Project, Project No. 2016.0050; Authorization for the City Manager to Negotiate and Approve Individual Change Orders Up to 5% of the Original Contract Amount; and Authorization for the City Manager to Negotiate and Approve Cumulative Change Orders Up to 15% of the Original Contract Amount; City Council Approval to Appropriate $110,000 from the DFSI Fund Balance and $930,000 from Measure BB Fund Balance for the Project
Body
SUMMARY AND RECOMMENDATIONS
This contract provides for repaving of City streets listed on an attachment to this report.
Staff recommends the following actions:
* Awarding the construction contract to DeSilva Gates Construction, L.P. in the amount of $2,396,060 for the subject project;
* Authorizing individual change orders up to 5% of the original contract ($119,803), and authorizing a total change order amount up to 15% of the original contract ($359,409);
* Appropriating additional DFSI Funds in the amount of $110,000; and
* Appropriating additional Measure BB Funds in the amount of $930,000.
BACKGROUND
This project includes two types of street repair, overlay and reconstruction. Overlay is less expensive than reconstruction and is performed on streets that have deteriorated beyond a street sealing treatment but have not yet failed. Overlay involves the removal of the top layer of existing pavement, completing spot repairs of failed subgrade areas, and replacing the top layer with new pavement. This overlay method is applied only if the roadway does not have a very high crown, a steep slope going outward from the gutter to the middle of the street.
The overlay thickness for each street is determined by evaluating the existing pavement thickness and expected traffic volumes. To increase durability because of high traffic use and to prevent the potential for cracks ...
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