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Table G.2-1 Pond Stage Summary <br /> Storage Volume (acre-feet) <br /> Pool Area Elevation(') Freeboard <br />Condition Below Above (Acres) (ft-amsl) (feet) <br /> Total Grade Grade <br />West Pond, 120.2 51.3 68.9 9.4 8613 2 <br />Normal pool <br />West Pond, 139.3 51.3 88.0 9.7 8615 0 <br />Maximum pool <br />East Pond, 61.8 31.0 30.8 4.4 8611 2 <br />Normal pool <br />East Pond, 70.9 31.0 39.9 4.7 8613 0 <br />Maximum pool <br />Both Ponds, 182.0 82.3 99.7 2 <br />Normal pool <br />Both Ponds, 210.2 82.3 127.9 0 <br />Maximum pool <br />Note: 1 Elevations based upon local mine-site datum. <br />G.2.3 Irrigation Pipeline Design <br />Current plans call for modifying the existing water supply pipeline, located on an <br />existing easement immediately north of and approximately parallel to the Rito Seco <br />Road, to transfer irrigation water from the West Pit irrigation ponds to the Salazar <br />Ranch. The irrigation pipeline will convey water from the West Pit to the existing <br />center pivot irrigation systems at the ranch. In order to provide the capacity to <br />convey the maximum required irrigation flows of 1,200 gpm and maintain sufficient <br />discharge pressure at the center pivots (30 psi) under gravity flow conditions, the <br />current 10-inch diameter pipeline will be modified as necessary to withstand the <br />designed operating pressures. If sections of the existing pipeline are not capable of <br />conveying the designed operating pressures, HDPE pipe with variable SDR (SDR 9 <br />to 17) ratings designed to withstand the hydrostatic pressures within the line or in-line <br />pressure-reducing valves or orifices will be installed to control maximum pressures as <br />necessary. <br />Battle Mountain Resources, Inc. 29 <br />P.\Projecls\212-New mt(S=Ltis)\SmLuisTtAmeedoxvl- West Fit Memgem AV5 Report&PDFs\TexAPermilamcnd-t v5c.dm December 2007