COUNTY OF SAN MATEO

Inter-Departmental Correspondence

Department of Public Works

DATE:

April 3, 2009

BOARD MEETING DATE:

April 14, 2009

SPECIAL NOTICE/HEARING:

None

VOTE REQUIRED:

Majority

TO:

Honorable Board of Supervisors

FROM:

James C. Porter, Director of Public Works

SUBJECT:

MidCoast Drainage Improvement Project –

Cypress Avenue from Highway 1 to Etheldore Street, Etheldore Street from Sunshine Valley Road to Vermont Avenue, and Sunshine Valley Road from Stetson Street to Etheldore Street – Moss Beach Area (Project Nos. M0210, M0211, F-149 [21])

RECOMMENDATION:

Adopt a resolution authorizing the Public Works Director to execute additional revision orders to the contract with Stoloski and Gonzales, Inc., in an amount not to exceed $23,500, for a total revision order authority not to exceed $58,500, and an aggregate contract amount of $415,000.

VISION ALIGNMENT:

Commitment: Ensure basic health and safety for all.

Goal 7: Maintain and enhance the public safety of all residents and visitors.

The proposed drainage improvements will help alleviate both street and property flooding which will benefit the public using the roads in these areas as well as adjoining property owners.

BACKGROUND:

PREVIOUS BOARD ACTION

1.

Adopted Resolution No. 069804 on November 18, 2008, which increased the contract with Stoloski and Gonzales, Inc. by $35,000 for a total contract amount of $391,500 in order to include the cost for work to relocate existing Montara Water and Sanitary District water mains that were in conflict with the proposed storm drainage improvements.

2.

Adopted Resolution No. 069601 on July 22, 2008, which adopted revised plans and specifications, determined prevailing wage scales and awarded and authorized execution of a contract with Stoloski & Gonzales, Inc. for the aforementioned project.

3.

Adopted resolution No. 064550 on June 19, 2001, which authorized the Director of Public Works to execute agreements with utility agencies for utility type work costing less than $50,000 proposed to be done in conjunction with road projects.

After execution of a contract with Stoloski & Gonzales, Inc. (“Contractor”) for the MidCoast Drainage Improvement Project, utility conflicts between the proposed storm drainage improvements and existing utilities were discovered.

DISCUSSION:

Additional utility conflicts with the proposed storm drainage improvements were encountered during construction and resulted in the requirement for additional work.

The proposed storm drain line along Etheldore Street and Sunshine Valley Road had to be re-aligned to avoid conflicts with existing water and sewer mains. Two additional concrete junction structures were installed and additional asphalt concrete pavement was placed as part of the re-alignment of the said storm drain line.

In addition, a drainage headwall and slope protection were installed at the south end of the newly installed box culvert in Cypress Avenue for erosion control purposes and to help ensure continuous drainage to the existing ditch located in the State right-of-way.

The drainage improvements have been completed , and the additional work resulted in additional costs in the amount of $23,500. If this additional authority is delegated, the Director’s revised aggregate authority would be increased to $58,500. A resolution has been approved as to form by County Counsel.

FISCAL IMPACT:

The additional cost needed to complete the storm drainage improvements is for a maximum amount of $23,500.

The additional cost is to be financed with Road Mitigation Fees. Funds have been appropriated in the Road Fund to finance this work.

There is no impact to the General Fund.