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5) Tailings ponds: There are no existing or proposed tailings ponds at the site. <br />6) Crushing facilities or significant dust or particulate generating activities: There will be no <br />crushing facilities at the site. Dust and particulate matter may be generated during construction of <br />facilities prior to commencement of mining. Once mining is underway, removal of waste rock <br />and ore within the mine drift will generate some dust and particulate matter. During dry weather <br />conditions, dust and particulates may also be generated along the haul road by ore and waste rock <br />haulage, at the temporary ore stockpile and waste rock dump, and along County Road DD-16 by <br />ore haul trucks and other transport vehicles. Fugitive dust will be minimized by application of <br />water as needed and permit calculations indicate no Air Pollution Emission Notice (APEN) is <br />required. <br />7) On-site waste disposal practices: The waste rock dump in will remain in place for the life of <br />the mine and is a potential source of sediment in runoff from the site. Two engineered sediment <br />ponds will be constructed to control release of sediment to the environment. Domestic and <br />mining related trash will be stored in covered barrels near the office and storage units prior to <br />removal to a landfill. There will be no domestic wastewater disposal. Drinking water will be <br />brought in daily by workers. <br />8) Stockpiles of overburden, raw materials, intermediate products, byproducts, finished <br />products or waste products: No overburden will be generated as mining operations will be <br />underground. Soil stockpiles are reseeded and maintained. Storage of ore and waste rock is <br />discussed above in item b 1). No intermediate products, byproducts, or finished products will be <br />generated by mining operations. <br />Best Management Practices (BMPs) for Stormwater Control <br />1) Stormwater diversion and erosion/sedimentation prevention: The existing waste rock area <br />was previously established with consent of DRMS and BLM and bermed both to prevent rim-on, <br />and to direct run-off to a sediment trap and detention pond to be evaporated or used for drilling <br />and dust suppression in the mine. If storm water overflows exceed the pond capacity, they will <br />be discharged across a riprap spillway into a natural drainage. This sediment trap and detention <br />pond was engineered as shown in Figure T-1 with steep walls and a riprap overflow ramp of <br />resistant bedrock for the outfall. <br />Ore will be temporarily stockpiled in a small, similarly-bermed area. The ore will be placed on <br />an area that will have been leveled somewhat and scraped to bedrock. Run-on will be prevented <br />by an uphill berm. At the down slope side of the pad, a ditch adjacent to the haul road directs <br />run-off from precipitation back into abandoned workings of the mine for total containment. Ore <br />will be shipped as frequently as possible and will not remain in storage for any significant time <br />period. Thus any run-off from the temporary ore stockpile will experience minimal contact time <br />for potential contamination and will be used for dust abatement. <br />Detailed drawings of the ore stockpile and waste rock storage areas which show proposed <br />stormwater BMPs are included as an attachment to this SWMP. <br />Vehicle traffic into and out of the waste rock and ore stockpile areas will travel over a ramp <br />constructed to maintain the integrity of the berms. <br />The existing haul road between the mine portal and the stockpiles is located on a north-facing <br />slope. It will be improved to a smooth 15 feet width with a gravel and cobble surface. <br />4