To: Honorable Mayor and Members of City Council
From: Phil Brun, Utilities Director
Prepared By: Michael J. Hether, Senior Civil Engineer
TITLE:
Title
Park Avenue and Jefferson Street Water Main Replacement
LABEL
RECOMMENDED ACTION:
Recommendation
Authorize the Utilities Director to award a construction contract to the lowest and best bidder, Vinciguerra Construction, Inc., for the Park Avenue and Jefferson Street Main Replacement Project in the bid amount of $1,167,850, and authorize the Utilities Director to execute the contract, contracts amendments and change orders on behalf of the City in an amount not to exceed $1,400,000; and determine that the actions authorized by this item are exempt from CEQA.
Body
DISCUSSION:
The City of Napa owns and operates approximately 350 miles of water mains that conveys potable water to more than 85,000 customers through the City and County. The City's water system consists of a network of pipelines that vary in size, age, material and purpose. Over time, certain portions of the City have experienced significant transformation (e.g. land use, density, etc.) over the originally installed water mains and unless there was an inadequate pipeline capacity to meet peak demands (including fire flow requirements), they were not identified for replacement in the City's capital improvement program (CIP).
Generally, there are several variables (e.g. age, capacity, performance, frequency of failure, soil type, lack of redundancy, etc.) influencing CIP decisions; in this specific case, performance and age are the contributing factors as the existing water mains are undersized (e.g. four and six-inch) and have reached the end of their useful life. In this specific case, a new twelve-inch water main will replace undersized water mains that are over 80 years old.
The Park Avenue and Jefferson Street water main replacements are both part of the City's 20-year capital improvement program (CIP) and includes replacement of und...
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