FROM: James D. Herberg, General Manager
Originator: Kathy Millea, Director of Engineering
SUBJECT:
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EROSION CONTROL AT SANTA ANA RIVER AND HAMILTON AVE., PROJECT NO. FE18-12
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GENERAL MANAGER'S RECOMMENDATION
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RECOMMENDATION:
A. Receive and file Bid Tabulation and Recommendation for Erosion Control at Santa Ana River and Hamilton Ave., Project No. FE18-12;
B. Award a Construction Contract to Engineering & Environmental Construction, Inc. for Erosion Control at Santa Ana River and Hamilton Ave., Project No. FE18-12, for a total amount not to exceed $162,281; and
C. Approve a contingency of $24,342 (15%).
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BACKGROUND
The Orange County Sanitation District (OC San) has a valve vault installed near the Santa Ana River Trail just north of Hamilton Avenue, in the City of Huntington Beach. The vault is located in an area that slopes down to a pedestrian entrance gate to a condominium complex.
RELEVANT STANDARDS
* Comply with California Public Contract Code Section 20103.8, award construction contract to lowest responsive, responsible bidder
* Operate and maintain facilities to minimize impacts on surrounding communities, including odor, noise, and lighting
PROBLEM
The slope between the valve vault and the pedestrian entrance erodes during rainstorms and the runoff deposits mud and sediment on the adjacent condominium parking lot. Soil erosion will ultimately compromise the integrity of the vault.
PROPOSED SOLUTION
Award a construction contract for Erosion Control at Santa Ana River and Hamilton Avenue, Project No. FE18-12. This project will repair, recompact, and install riprap to provide long-term protection to the slope around the vault. This project also eliminates the need for recurring slope maintenance that is not completely effective at stopping soil erosion.
This project requires the excavation and compaction of soil around the valve vault. Because of the relatively small contract valu...
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