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Sievers Pit M-77-098 SWSP, Oldcastle SW Group, Inc. Page 3 of 12 <br /> August 7, 2025 <br /> Depletions <br /> 83CW65 Augmentation Plan <br /> The 83CW65 augmentation plan augments the Sievers Ranch Gravel Pit Pipeline (WDID <br /> 3801554) and the Sievers Ranch Gravel Pit Well (WDID 3806177, permit no. 77077-F). The <br /> Sievers Ranch Gravel Pit Operation was decreed for the following annual amounts: <br /> • 2.6 acre-feet for sand screen operation, <br /> • 9.5 acre-feet for dust control of roads and crusher, <br /> • 3.6 acre-feet for concrete production, <br /> • 5.1 acre-feet for asphalt production, <br /> • 0.2 acre-feet for domestic use, and <br /> • 5.1 acre-feet of pond evaporation, <br /> • For a total annual consumption of 26.1 acre-feet. <br /> The water rights used for augmentation of out-of-priority depletions from the operation are <br /> the Kaiser-Sievers Ditch, Priority No. 136 (WDID 3801147) and the Sievers Ranch Pond Nos. <br /> 1-4 (WDIDs 3804001-3804004). <br /> Depletions in Excess of 83CW65 Augmentation Plan <br /> The anticipated consumptive use at the Sievers Pit mining operation under this SWSP is 31.07 <br /> acre-feet annually due to exposure of groundwater, surface water evaporation and washing, <br /> water lost with mined product, and dust control. Permit no. 77077-F was issued for this <br /> gravel pit, and allows 51 acre-feet of annual appropriation for: <br /> • 15.5 acre-feet of evaporative losses due to the exposure of 6 acres of groundwater <br /> (covered by the SWSP), <br /> • 15.0 acre-feet of water used for dust control (5.5 acre-feet covered by the SWSP and <br /> 9.5 acre-feet covered by case no. 83CW65), <br /> • 11.8 acre-feet of water lost with mined product (covered by the SWSP), <br />