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end loader, backhoe and dumped into a shaker (screen)/trommel. The <br />shaker/trommel will remove oversized material usinp, -provided water (35 -100 gpm) <br />where the finer sands will be captured for processing and coarse gravels and <br />cobbles will be returned to the pit and reclaimed. Approximately 80% of the water <br />used for screening purposes will be recycled while the remaining 20% will be <br />discharged to Cache Creek. Silts and clays will be conveyed into a series of three <br />ponds designed to drop out total suspended solids (TSS). The first pond will be <br />used to drop out course TSS materials. The gravel constructed ponds are typically <br />less than 100 feet long, 50 feet wide and less than 10 feet deep (Figure D-2) <br />illustrates the location of the two sets of three processing ponds. The ponds are <br />built to remove sediment yet designed to allow seepage from the respective ponds <br />such that process water is not contained more than 72 hours yet allow ample time <br />to settle sediment such that any discharge from the ponds will meet Discharge <br />water quality standards. <br />Water from the first pond in each processing stream will be conveyed to the second <br />and third ponds (4-6 inch PVC pipe) to polish and to contain fine suspended solids <br />prior to water discharge to Cache Creek. Discharged water will be managed in <br />accordance with CDPHE industrial discharge water quality permit requirements <br />(Exhibit M-4). The captured sands will be collected and further processed, using <br />gravity separation techniques to recover free gold. After processing, the <br />(geochemically benign) sands will be disposed in previously mined areas that are <br />not prone to surface water erosion and reclaimed as outlined in Exhibit E. <br />Gold Basin mining is designed to operate two separate placer processing units. <br />Initially, one processing unit will be used and within a year or two, a second <br />processing unit will be installed. The initial processing unit will be located <br />towards the eastern (downstream) portion of the property boundary Exhibit D, <br />Figure D-3. The second processing unit will be located northeast of the storage <br />unit (upper Cache Creek) in an area operated by the previous operators Exhibit D, M <br />Figure D-2. The alluvial material containing free gold will be processed using the <br />methods previously discussed. Process water treatment will occur in three settling <br />December 28, 2014 <br />Colorado Division of Reclamation Mining and Safety <br />Gold Basin Mine, Inc. <br />Gold Basin Mine <br />Granite, Colorado <br />