Loma Rica-E. George Intertie Pump Station

The Nevada Irrigation District (NID or District) is proposing to construct the Elizabeth George – Loma Rica Intertie Pump Station Project (project or proposed project) to increase water supply reliability in the NID water distribution system. This Initial Study/Mitigated Negative Declaration (IS/MND) has been prepared to identify and assess the anticipated environmental effects of the proposed project. The District, as the California Environmental Quality Act (CEQA) lead agency, has determined that a Mitigated Negative Declaration is the appropriate environmental document for the proposed project. This documentThe Elizabeth George and Loma Rica Water Treatment Plants (WTPs) are two of the District’s facilities that supply water to customers near Grass Valley, California. These two WTPs are interconnected by an 18-inch diameter potable water transmission main that parallels Brunswick Road. There are two pressure zones along this transmission line. Elizabeth George supplies water to the lower pressure zone, while Loma Rica supplies water to the higher zone. There is a pressure reducing and flow control valve vault separating the higher pressure zone from the lower zone that allows Loma Rica to supplement the Elizabeth George capacity. The proposed project will allow the Elizabeth George WTP to supplement the Loma Rica WTP capacity.

The objectives and need for the proposed project include the following:

  1. Supplement flows to the Loma Rica system during peak demand periods
  2. Ability to take the Loma Rica WTP out of service for long periods of time during the winter months for maintenance, emergencies, and repairs.
  3. The pump station will allow Loma Rica to be out of service during construction of planned future upgrades of the WTP.
  4. Increase water supply reliability in the distribution system.

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