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AUTHORIZATION TO ENTER INTO AMENDMENT NO. 1 TO THE PROFESSIONAL SERVICES AGREEMENT WITH BLACK & VEATCH CORPORATION FOR PHASE 2 DESIGN SERVICES FOR THE CHOLLA WATER TREATMENT PLANT IMPROVEMENTS
Staff Contact: Craig Johnson, P.E., Director, Water Services
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Purpose and Recommended Action
Recommendation
This is a request for City Council to authorize the City Manager to enter into Amendment No. 1 of the Professional Services Agreement C-9627 with Black & Veatch Corporation (B&V) for Phase 2 design services for Cholla Water Treatment Plant Improvements to increase the original agreement compensation of $491,960 by $1,298,140 for an amount not to exceed $1,790,100; and extend the term of the agreement to December 31, 2019.
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Background
The Cholla Water Treatment Plant (CWTP) was built in 1978 to treat raw water from the Salt River Project via the Arizona Canal. CWTP has a treatment capacity of 30 Million Gallons per Day (MGD) and supplies treated water to the city water zones 1 and 2. The plant has gone through several improvement and expansion projects over the years.
The project consists of the evaluation study (phase 1), design services (phase 2), and the construction services (phase 3).
Much of the original plant's equipment is still in operation and may be approaching the end of its useful life. Under phase 1 of this project, a facility assessment was performed which identified and recommended system optimizations as well as categorized asset improvements for rehabilitation or replacement into immediate, near and long term.
Analysis
From the March of 2014 Request for Proposal selection process, B&V was selected to perform an evaluation study of the facilities condition and the various function areas within the plant. This amendment for $1,298,140 will include design services to implement the improvement recommendations. Amendment 2 for construction administration services (Phase 3) will be brought to the Council at a future date.
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