FROM: James D. Herberg, General Manager
Originator: Kathy Millea, Director of Engineering
SUBJECT:
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TAFT BRANCH IMPROVEMENTS, PROJECT NO. 2-49
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GENERAL MANAGER'S RECOMMENDATION
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RECOMMENDATION: Recommend to the Board of Directors to:
A. Approve a Professional Design Services Agreement with Woodard & Curran, Inc. to provide engineering services for Taft Branch Improvements, Project No. 2-49, for an amount not to exceed $2,200,000; and
B. Approve a contingency of $220,000 (10%).
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BACKGROUND
The Orange County Sanitation District (Sanitation District) owns and maintains regional conveyance facilities in the City of Orange, including the 60-year-old 12 to 18-inch diameter Taft Branch sewer. The Taft Branch runs approximately 13,000 feet from the intersection of Santiago Blvd. and Meats Ave. to the intersection of Batavia St. and Taft Ave.
RELEVANT STANDARDS
* Achieve less than 2.1 sewer spills per 100 miles
* Protect OC San assets
* California Government Code ?4526: Select the "best qualified firm" and "negotiate fair and equitable fees"
PROBLEM
The 2019 Master Plan Update (Collections Capacity Evaluation Study) determined the Taft Branch does not have enough capacity under peak wet weather conditions. Additionally, the current sewer alignment has restricted maintenance access where it crosses under the 55 Freeway just south of Meats Ave. and adjacent to residential and Orange County Flood Control properties.
PROPOSED SOLUTION
Award a Professional Design Services Agreement for Taft Branch Improvements, Project No. 2-49. The project will eliminate the current capacity deficiencies and improve maintenance access. The engineering effort will include an evaluation of alternative sewer alignments and construction methods.
TIMING CONCERNS
The schedule driver of this project is to resolve the capacity deficiencies to reduce the risk of potential spills during wet weather events and improve the current restricted ...
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