FROM: Robert Thompson, General Manager
Originator: Mike Dorman, Director of Engineering
SUBJECT:
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KNOTT-MILLER HOLDER ARTESIA BRANCH REHABILITATION, PROJECT NO. 3-60
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GENERAL MANAGER'S RECOMMENDATION
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RECOMMENDATION:
A. Approve a Professional Design Services Agreement with Dudek to provide engineering services for Knott-Miller Holder Artesia Branch Rehabilitation, Project No. 3-60, for an amount not to exceed $1,200,000; and
B. Approve a contingency of $120,000 (10%).
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BACKGROUND
The Miller-Holder Trunk was constructed by the Orange County Sanitation District (OC San) in the cities of Buena Park and La Palma from 1959 to 1998. The Knott Trunk was constructed from 1971 to 1978 in the City of Buena Park. These trunk sewers consist of 18-inch to 45-inch vitrified clay pipe or reinforced concrete pipe. All sewer manholes are concrete with polyurethane or PVC linings.
RELEVANT STANDARDS
* Comply with California Government Code Section 4526 to engage the best qualified firm "on the basis of demonstrated competence and qualifications" and "negotiate fair and reasonable fees"
* Protect OC San assets
* Meet or exceed sanitary sewer overflow regulations
* Commitment to safety & reducing risk in all operations
PROBLEM
There are multiple condition issues associated with the Knott Interceptor and Miller-Holder Trunk Sewers. Closed-circuit television inspection of the sewer indicates that sewer pipeline segments are significantly cracked, have multiple fractures and/or are broken leading to infiltration, and there are multiple areas where deposits have become encrusted and cannot be removed by cleaning. Additionally, sewer manholes in the same area have liner failure and widespread concrete failure.
PROPOSED SOLUTION
Approve a Professional Design Services Agreement for Knott-Miller Holder Artesia Branch Rehabilitation, Project No. 3-60. This project will rehabilitate portions of the Knott Interceptor and Miller...
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