FROM: Robert Thompson, General Manager
Originator: Mike Dorman, Acting Director of Engineering
SUBJECT:
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OLIVE SUB-TRUNK SIPHON REHABILITATION AT SANTA ANA RIVER, PROJECT NO. FE20-08
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GENERAL MANAGER'S RECOMMENDATION
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RECOMMENDATION:
A. Receive and file Bid Tabulation and Recommendation for Olive Sub-Trunk Siphon Rehabilitation at Santa Ana River, Project No. FE20-08;
B. Award a Construction Contract to Mehta Mechanical Co. Inc. dba MMC Inc. for Olive Sub-Trunk Siphon Rehabilitation at Santa Ana River, Project No. FE20-08, for an amount not to exceed $1,944,000; and
C. Approve a contingency of $194,400 (10%).
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BACKGROUND
The Orange County Sanitation District (OC San) owns and operates a sewer siphon at the Santa Ana River on Katella Avenue in the cities of Orange and Anaheim. In recent years, this siphon became clogged with sand and other debris due to corrosion, and these reclaimable flows were diverted to the adjacent Santa Ana River Interceptor (SARI) which consists of non-reclaimable flows. This project will rehabilitate this siphon and restore flows back into the Olive Sub -Trunk Sewer System.
RELEVANT STANDARDS
* Comply with California Public Contract Code Section 20103.8, award construction contract to lowest responsive, responsible bidder
* Achieve less than 2.1 sewer spills per 100 miles
* Operate and maintain facilities to minimize impacts on surrounding communities including odor, noise, and lighting
* Use all practical and effective means for resource recovery
PROBLEM
The existing siphon is corroded with structural deficiencies that prevent putting the line in service and allows sediments and other debris to enter the pipe. The siphon manholes are also deteriorated. The siphon does not have an air jumper, preventing it from functioning properly.
PROPOSED SOLUTION
Award a construction contract for Olive Sub-Trunk Siphon Rehabilitation at Santa Ana River, Project No. FE20-08. The...
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