25C - AGMT - OCWD CENTENNIAL PARK

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Section 3 air compressor, flatbed truck and crew of up to four employees, The redevelopment of an injection, well Could take up to two weeks and would occur during the day, Monitoring Wells Every two to five years OCWD assesses the condition of monitoring wells to determine if they need redevelopment. The redevelopment activities would be similar to an injection well- 3.5 Project Design Features The following design features have been incorporated into the Mid Basin Centennial Park Injections Well Project. Noise Reduction • To minimize noise impacts to the environment sound walls would be proved around each well site. a) MBI-2 will have a 24-foot high temporary sound barrier on the northeast, southeast, and southwest sides of MBI-2 construction area. b) MBI-3 will have a 24-foot high temporary sound barrier on the north, east and west sides of MBI-3 construction area, c) MBI-4 will have a 24-foot high temporary sound barrier around the perimeter of MBI-4 construction area. d) MBI-5 will have a 24-foot high temporary sound barrier around the perimeter of MB 1-5 construction area. e) The Monitoring Well will have a 24-foot high temporary sound barrier around the perimeter of the Monitoring Well construction area and will also have an 8-foot high sound blanket located on the north and east sides of the air compressor. • To minimize potential noise during the day when school would in session at Godinez High School, Mitchell Developmental School and Centennial Education Center, the construction of the water supply pipeline and back wash pipeline Would occur at night. • The Heritage Museum, site improvements would occur when school is not in session at Mitchell Development School and Godinez High School, • 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. Mid Basin Centennial Park lru'patipn §d Project Final EIR 3-10