To: Board of Supervisors
Department or Agency Name(s): Transportation and Public Work
Staff Name and Phone Number: Johannes J. Hoevertsz, 707-565-2231
Vote Requirement: 4/5th
Supervisorial District(s): First, Second, Fourth and Fifth
Title:
Title
2017-18 Pavement Preservation Program
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Recommended Actions:
Recommended action
Approve and authorize the Chair to sign Change Order Number 4 to construction contract C17051 with Ghilotti Construction Company, Inc. in the amount of $138,900for guard railing and retaining wall repairs on Bohemian Highway.
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Executive Summary:
The Department of Transportation and Public Works (TPW) requests approval of a contract change order for the 2017-18 Pavement Preservation Program - Chip Seals and Overlays, Project C17051 (“Project”). The contractor is Ghilotti Construction Company, Inc. The total cost of the change order is $138,900.00. The change order will fund guard rail and retaining wall repairs at two locations on Bohemian Highway.
Discussion:
On April 3, 2018, this Board awarded low bidder, Ghilotti Construction Company, Inc., a construction contract in the amount of $4,911,973.77, which included a 10% contingency. The contract included pavement improvement work along approximately 15.19 miles of County roads and certain guard rail improvements. After the contract was awarded, two collisions damaged guard railing in two areas along the Bohemian Highway that were included under the original contract.
Change Order Number 4 provides funding to: 1) repair guard railing on Bohemian Highway on the bridge over Dutch Bill Creek, and 2) repair a retaining wall system with guard railing on Bohemian Highway between Van Ness Avenue and East Avenue. The new installation on the bridge over Dutch Bill Creek utilizes a "Side-Mounted Weak-Post System" that is designed to provide a high level of crash protection while preserving the structural integrity of the bridge. The total cost of the change order is $138,900.00 and it will add an additional twenty working days to the contract.
Board authorization for this change order will be necessary because the estimated value of the work exceeds the Transportation and Public Works Director’s authority granted by the Board. There is sufficient contingencies in the project budget to cover the additional costs of the guard rail repairs.
Prior Board Actions:
4/03/18: Award 2017-18 Pavement Preservation Program - Chip Seals and Overlays, C17051, construction contract.
Fiscal Summary
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Expenditures |
FY 18-19 Adopted |
FY19-20 Projected |
FY 20-21 Projected |
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Budgeted Expenses |
$138,900 |
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Additional Appropriation Requested |
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Total Expenditures |
$138,900 |
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Funding Sources |
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General Fund/WA GF |
$138,900 |
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State/Federal |
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Fees/Other |
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Use of Fund Balance |
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Contingencies |
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Total Sources |
$138,900 |
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Narrative Explanation of Fiscal Impacts:
There are sufficient appropriations in the adopted FY 2018-19 Roads Fund Capital Improvement budget to cover the additional costs of the guard rail repairs. Funding for this change order will come from the annual General Fund contribution to the Pavement Preservation Project.
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Staffing Impacts: |
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Position Title (Payroll Classification) |
Monthly Salary Range (A - I Step) |
Additions (number) |
Deletions (number) |
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Narrative Explanation of Staffing Impacts (If Required):
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Attachments:
Change Order #4
Related Items “On File” with the Clerk of the Board:
Special Provisions, Bid Book and Addendum 1