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in the operation and portable lighting may be used within the pit from time to time. Portable <br /> toilets will be used for employees. All mining structures on site are shown on the Mining Map. <br /> Existing 4-strand barbed wire fences border the southern border of the site. Fencing will be <br /> installed clearly segregating the mining area from the remainder of the parcel which is used for <br /> cattle grazing. The Operator commits to clearly marking the permit boundary on all sides. <br /> Speed limits and other traffic control signs will be found throughout the site and around the <br /> operation area.No problems are expected with vandalism. <br /> Stormwater drainage on the onsite disturbed areas will be managed to direct all stormwater to the <br /> active working area by berms and ditches that border all disturbed areas of the site.No formal <br /> sediment settling pond or sump will be located on site;however,the nature of mining leads to a <br /> depressed mined basin surrounded by site perimeter and pit specific isolation berms. Therefore, <br /> no stormwater or process water will leave the site and all runoff from a 100 year 24-hour rain <br /> event will be trapped on site and waters will infiltrate the pit floor within 72 hours. Onsite <br /> drainages will not be directed off any highwall into the pit. Excepting the highwall, slopes in the <br /> area of drainages will be maintained at or shallower than 3H:1 V. As no stormwater will leave or <br /> is 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,processing,hot plant and stockpile areas and placed in <br /> temporary perimeter berms surrounding the disturbed area. Piles are shown at the perimeter of <br /> the permit boundary on the Mining Map,the maximum disturbance limit. Topsoil stockpiles <br /> will be created by stripping the minimum required disturbed area as required by each year's <br /> mining. If additional area is required to be disturbed,the pile will be pushed or moved further <br /> out to the new perimeter of the disturbed area. Topsoil is expected to range from 0-3 inches. <br /> Topsoil will be stockpiled first in the western and northwestern extent of the site and the berm <br /> will build to the east as mining progresses as shown on the Mining Map. The topsoil berm will <br /> be used during reclamation,will be constructed to 211:1V slopes or shallower, and will be <br /> seeded within 180 days of pile establishment with native rangeland grasses to stabilize the <br /> topsoil stockpile until reclamation is in process. <br />