25C - AGMT - OCWD CENTENNIAL PARK

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Section 3 3.1 Background To help meet Orange County's groundwater needs OCWD is proposing to construct and operate four injection wells at Centennial Park and a single monitoring well at the Heritage Museum. The proposed injection wells would inject recycled water from the OCWD Groundwater Replenishment System (GWR System) into the principal aquifer. The GWR System is a joint water reclamation project with OCWD and the Orange County Sanitation District (OCSD). The GWR System takes secondary treated wastewater and through advancement treatment treats the water to exceed drinking water standards. By injecting GWR System into the principal aquifer, OCWID would be able to provide additional local sources of water to replenish the Orange County Groundwater Basin, Presently, a demonstration Mid Basin Injection Well (MBI-1) is in operation at the northwest intersection of Edinger Avenue and the Santa Ana River in the City of Fountain Valley. The purpose of the MBI-1 demonstration well is to pilot the Mid Basin Injection well technologies, operational strategies and monitor the water quality impacts resulting from the introduction of GWRS water directly into the principal aquifer. The data gathered from MBI-1 demonstration well would be used to guide final operation strategies and design plans for the Centennial Park Mid Basin Injection Well Project. 3.2 Project Area Setting Regional Setting As shown in Figure 1, Centennial Park and the Heritage Museum are located in the southwestern area of the City of Santa Ana, Orange County, California. The primary regional access to both sites would be Interstate 405 via the Fairview Street exit, The local access to the both sites would be provided from Fairview Street, Edinger Avenue and Harvard Street. Local Setting Centennial Park Centennial Park is an 87 acre community park located at 3000 West Edinger Avenue. As shown in Figure 2 the park site is bounded by the Santa Ana River to the west, Fairview Road and the Greenville Banning Flood Control Channel to the east, Edinger Avenue to the north and Godinez High School to the south. Centennial Park features a combination of active and passive recreational uses that are centered on a man-made lake. A loop road extends along the perimeter of the park site providing access to various locations in the park including several parking areas- Additionally, included within the park boundaries is the Santa Ana Mid Basin Centennial Park I fiall I Project Final EIR 3-1