25C - AGMT - OCWD CENTENNIAL PARK

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Executive Summary • The construction of the monitoring well sound wall at the Heritage Museum would occur when school is not in session at Mitchell Development School and Godinez High School. • The construction of the MBI-5 Well sound wall would occur when school is not in session at Centennial Education Center and Godinez High School. • Paving activities at Centennial Park would be coordinated with Santa Ana Unified School District and Centennial Education Center to minimize noise impacts. • Well redevelopment maintenance activities for MBI-2, MBI-4 and the monitoring well would occur when school is not is session. Traffic CirculationlParking After well drilling, well construction and well development activities are completed the size of the work area will be reduced to free up available parking at Centennial Park. • To maintain safe circulation during the day along the Centennial Loop the segment of water supply and back flush pipelines within Centennial Park will constructed at night. To minimize potential construction traffic congestion within Centennial Park, all construction traffic entering Centennial Park would be required to utilize the Edinger Avenue/Mohawk Drive Entrance. Surface Water To help to conserve domestic water with the City Santa Ana, groundwater back flushed from OCWD injection wells would be used to maintain the water level in Centennial Park. To minimize surface water impacts a 10 foot wide by 200 foot long pervious sidewalk would be constructed between Centennial Park Parking Lot 5 to the proposed Shared recreation/Communication Structure 1 near the soccer field complex. Significant Unavoidable Adverse Impacts There are no significant unavoidable adverse impacts associated with the construction and operation of the Mid Basin Centennial Park Injection Well Project. Mid Basin Centennial Park Ina'6 4 eal s Project F R inal E ES-3 Z5-