All of the well sites mentioned above are located in East Valley Water District's (EVWD) Upper Pressure Zone and have a history of contributing dissolved air into the distribution system. The purpose of the project is to mitigate excessive dissolved air from EVWD's Upper Pressure Zone by aerating the water in a tank at Plant 143 and in particular, Well 143.
In the 2008 EVWD Waster Master Plan (WMP), the Plant 143 site was identified and selected as the location for a 10 million gallon (MG) storage tank for the Intermediate Pressure Zone and a booster pump station with a firm capacity of 6,500 gpm, and a backup capacity of 2,500 gpm. The WMP findings showed that the 10 MG storage would be sufficient to balance the anticipated supplies in the Lower and Immediate Pressure Zones at the ultimate build out capacity. The pump station is required to pump water from the Immediate Pressure Zone to the Upper Pressure Zone.
The objectives of the project include (1) continued use of all wells at maximum capacity; (2) decrease excessive dissolved air from wells 143, 146, 146A, and 147, and (3) additional water storage capacity to meet Master Plan design requirements.
East Valley Water District, 3645 East Highland Avenue, Ste. 18, Highland, CA 92346
(1) The project will have a significant impact on the environment
(2a) An Environmental Impact Report was prepared for this project pursuant to the provisions of CEQA
(2b) A Mitigated or a Negative Declaration was prepared for this project pursuant to the provisions of CEQA
(2c) An other document type was prepared for this project pursuant to the provisions of CEQA
(3) Mitigated measures were made a condition of the approval of the project
(4) A mitigation reporting or monitoring plan was adopted for this project
(5) A Statement of Overriding Considerations was adopted for this project
(6) Findings were made pursuant to the provisions of CEQA
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