FROM: Robert Thompson, General Manager
Originator: Mike Dorman, Director of Engineering
SUBJECT:
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SANTA ANA TRUNK SEWER REHABILITATION, PROJECT NO. 1-23
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GENERAL MANAGER'S RECOMMENDATION
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RECOMMENDATION: Recommend to the Board of Directors to:
A. Receive and file Bid Tabulation and Recommendation for Santa Ana Trunk Sewer Rehabilitation, Project No. 1-23;
B. Approve a project budget increase of $9,600,000 for Santa Ana Trunk Sewer Rehabilitation, Project No. 1-23, for a new total project budget of $65,400,000;
C. Award a Construction Contract Agreement to Steve P. Rados, Inc., for Santa Ana Trunk Sewer Rehabilitation, Project No. 1-23, for a total amount not to exceed $44,787,000; and
D. Approve a contingency of $4,478,700 (10%).
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BACKGROUND
The Santa Ana Trunk, which carries sewage from the southern portion of Santa Ana and the northern portion of Costa Mesa to the Orange County Sanitation District's (OC San's) Plant No. 1, was originally constructed in the early 1950s. Several projects have replaced or rehabilitated small portions of the pipe and many of the manholes over the past 60 years.
Most of the Santa Ana Trunk between Bristol Street and Alton Avenue in Santa Ana consists of unlined 42-inch and 48-inch diameter reinforced concrete pipe. A significant portion of the alignment runs through easements that cross diagonally through a light industrial and commercial area rather than along public streets.
This project will rehabilitate a portion of the Santa Ana Trunk Sewer north of Interstate 405. Work includes rehabilitation of approximately 15,000 feet of large diameter sewers and associated manholes in the cities of Santa Ana and Costa Mesa using the cured-in-place (CIPP) trenchless rehabilitation method.
RELEVANT STANDARDS
* Comply with California Public Contract Code Section 20103.8, award construction contract to lowest responsive, responsible bidder
* Protect OC San assets
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