Title
AUTHORIZATION TO ENTER INTO A PROFESSIONAL SERVICES AGREEMENT WITH CLEAR CREEK ASSOCIATES, LLC, FOR EVALUATION OF GROUNDWATER BACKUP SUPPLY
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 a Professional Services Agreement with Clear Creek Associates, LLC, to evaluate groundwater backup water supplies, and approve expenditure of funds in an amount not to exceed $199,965...body
Background
To improve water supply redundancy, the Water Services Department will engage a hydrogeology consultant to evaluate backup groundwater supplies for all City water zones (1 to 4), evaluate interconnection options with other municipal water systems, and assess operational and distribution system improvements. The project will evaluate additional sources of potable water supply such as groundwater wells, aquifer storage & recovery (ASR) wells, and system interconnections with other municipal providers.
The City's four water delivery zones each have different water supply sources including groundwater and surface water. The surface water supply sources include Colorado River water and Salt River Project water. These renewable surface water supplies are vulnerable to shortages depending on watershed conditions and drought. As a consequence, to assure that the City will have adequate potable supply in times of surface water shortages, new groundwater supply sources need to be identified. As part of the project the City will also evaluate options for distribution system water quality improvements associated with groundwater development and system interconnection.
Analysis
Clear Creek Associates, LLC is on the Engineering Department's "on-call" list for hydrogeology services. They were chosen for this Water Services hydrologic analysis project because of the experience and knowledge that the firm has with regional groundwater cond...
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