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STORMWATER MANAGEMENT PLAN <br /> CRIPPLE •- GOLD MINING COMPANY <br /> The pneumatic transfer of ammonium nitrate prill into the silos and the gravity fed loading of equipment is <br /> attended by the truck drivers, providing for a rapid response in the event of an incident. Drainage at the <br /> explosives storage area is separated from general stormwater drainage by grading and a settling area. Dry <br /> product that accumulates beneath the silos is transported to the blasting area in the various mining areas <br /> onsite. <br /> Lime delivery is attended by the truck driver, providing for a rapid response in the event of a lime release. <br /> Lime that accumulates at the base of the silo is collected and transported to the VLF. The gradients near <br /> the silo are almost flat, so that movement of the lime away from the silo is limited. Any stormwater runoff <br /> that does occur in this area is diverted to EMP-011 <br /> 4.3.3 Sediment and Erosion Prevention <br /> The following non-structural erosion-control BMPs are required for CC&V's stormwater management <br /> system: <br /> • Develop and implement plans prior to construction activities for the necessary erosion control <br /> methods or other BMPs/EMPs. <br /> • Incorporate BMPs/EMPs and stormwater management requirements into construction contracts by <br /> reference or by requiring that an activity specific SWMP be submitted by the contractor <br /> • Incorporate appropriate stormwater management practices into designs of extended or new <br /> facilities. <br /> • Reclaim disturbed areas as soon as practicable (concurrent reclamation). <br /> • Install vegetation or riprap revetment (or both, as appropriate) in water flow channels where <br /> required. <br /> • Reduce water velocities and erosion potential in constructed swales and channels by installation <br /> of check dams and water bars where appropriate. <br /> • Minimize the disturbance of existing vegetation <br /> Structural BMPs will include straw bales, silt fences, rock check dams, swales and small detention <br /> depressions, road-side detention basins or sumps, sediment control ponds, stormwater diversions and <br /> channels, channel revetment protection such as vegetation and riprap, benches to interrupt flow on slopes, <br /> and other BMPs as deemed suitable for an application. Examples of BMPs that may be used at the site are <br /> included in Attachment 1. <br />