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Unimproved on-site roads may change as mining progresses throughout the site; however, a <br /> main —10 foot-wide northeast-southwest trending road will be kept in place at the landowner's <br /> request. See the enclosed affidavit, following Exhibit C, signed by the landowner ensuring onsite <br /> mining roads will remain on the site after mining. Support equipment will come to the site on an <br /> as-needed basis. No night mining activity is scheduled for the operation; however, portable <br /> lighting may be used within the pit from time to time. Portable lights will only be used for the <br /> purpose of equipment maintenance activities within permitted hours in the winter months while <br /> the days are shorter. All mining structures on site are shown on Map E-2. <br /> The Operator commits to clearly marking the permit boundary on all sides. No problems are <br /> expected with vandalise,;. <br /> Stormwater drainage on the onsite disturbed areas will be managed to direct all stormwater to <br /> either the active working area or the processing area tailings ponds by berms and ditches that <br /> border all disturbed areas of the site. No chemicals, including flocculant, will be used in the <br /> tailings pond and no impact to groundwater will occur from the use of the tailings pond. Surface <br /> stormwater in the immediate area surrounding the tailings pond may drain into eh pond but the <br /> majority of surface stormwater will flow to other areas of the site, as shown on Map E-2, or will <br /> infiltrate into the porous ground surface within 72 hours. <br /> No formal sump will be located on site; however, the nature of mining leads to a depressed <br /> mined basin surrounded by site perimeter and pit specific isolation berms. Therefore, no <br /> stormwater or process water will leave the site and all runoff from a 100 year 24-hour rain event <br /> will be trapped on site and waters will infiltrate the mine floor within 72 hours. Onsite drainages <br /> will not be directed off any highwall into the mine. Excepting the highwall, slopes in the area of <br /> drainages will be maintained at or shallower than 3H:IV. As no stormwater will leave or is <br /> anticipated to leave the site, a CDPHE Storm Water Discharge permit is not required. <br /> 4. Topsoil and Overburden Handling <br /> Topsoil will be salvaged from the mined area and placed in a stockpile in the northwest extent of <br /> the site. Piles are shown at the perimeter of the permit boundary on Map E-2, the maximum <br /> disturbance limit. Topsoil stockpiles will be created by stripping the minimum required disturbed <br /> Bancroft Placer Mine tA',"X#U..a� ,y�� NAA <br /> July 2020 C-5 <br />