25C - AGMT - OCWD CENTENNIAL PARK

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Executive Summary *N *6111111 W wm�*a The Proposed Project involves the construction of four underground injection wells at Centennial Park and a below ground monitoring well at the Heritage MUSeUrn. The water supply to the injection wells would be recycled water from OCWD GWR System (GWRS) water treatment plant in Fountain Valley. An underground pipeline would! be constructed that would extend from the GWR System water supply pipeline along the Santa Ana River to Centennial Park where it would branch off to the four injection well sites. When in operation the four injection wells would be able to provide up to 12 million gallons per day (MGD) of additional groundwater recharge capacity to the Orange County Groundwater Basin, To monitor water quality in the area, a monitoring well has been proposed at the Heritage Museum. The Mid Basin Centennial Park Injection Well Project would involve six construction activities. These activities include; • Construction of Water Supply Pipeline • Construction of Back Flush Pipeline • Drilling and Construction of injection Wells at Centennial Park • Construction of Shared Recreation /Communication Structures • Repaving of Centennial Park Parking Lot • Site Improvements and Drilling and Construction of a Monitoring Well at Heritage Museum Project Objectives Below are the CEQA objectives for the Mid Basin Centennial Park Injection Well Project. Construct the Mid Basin Centennial Park Injection Well Project in location that can readily tie into the existing GWR System pipeline with minimal impacts to the environment. • Provide 12 MGD per day of additional groundwater recharge capacity to the Orange County Groundwater Basin. Maximize the use of GWR System as the local water supply to replenish the Orange County Groundwater Basin. Mid Basin Centennial Park In' i Weal's Project Final EIR ES-1 Y96 6