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Brannan Sand and Gravel Company — Valley's Edge Resource SWSP Renewal Request <br /> October 31, 2023 <br /> This site is currently under reclamation and backfill is expected to occur during this SWSP <br /> period. Currently, some of the mining areas have exposed groundwater,left over from <br /> mining, which will be backfilled over time. The proposed final reclamation is backfill and <br /> subsequent surface development. Depletions during future mining and post-mining periods <br /> will be addressed in subsequent renewals. No offsite dewatering will occur. Consumptive <br /> use at Valley's Edge Resource consists mostly of evaporative losses from exposed <br /> groundwater with smaller amounts of use for dust control and water retained in removed <br /> product. <br /> The resulting depletions to the South Platte River will be replaced using a lease of <br /> augmentation water from the City of Aurora, discharged from the Metro Wastewater <br /> Reclamation District Robert W. Hite Treatment Facility. This SWSP request covers the <br /> relevant period between November 1, 2024 through October 31, 2 02 5. <br /> a I-R677w R66W �d <br /> y Mining Centroid <br /> +. <br /> 8 17 <br /> rU� Approx.GW Exp. <br /> Approx.Mining Extent <br /> VRE Pit Boundary <br /> `. 1112 Alluvial Extent <br /> JJJ <br /> TiN r <br /> .I <br /> All <br /> r <br /> 25 <br /> !!, <br /> 5 _ a aI <br /> Figure 1.Vicinity map of Valley's Edge Resource site <br /> 2. DEPLETIONS <br /> Evaporative loss will occur from exposed groundwater and water withdrawn from the pit <br /> will be consumed for dust suppression and retained in mined product. Brannan anticipates <br /> that, over the course of the SWSP period,there will be up to 16 acres of exposed ground <br /> DINATALE WATER CONSULTANTS 2 <br />