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All fuel tanks will be portable and will have secondary containment. Fuel tanks will be located in <br /> the processing area; see Map E-2. Several hazardous materials may be stored and used onsite <br /> throughout the project. These materials include products that are associated with diesel motors. <br /> Unimproved on-site roads may change as mining progresses throughout the site and only the <br /> currently existing access road will remain following reclamation. See the enclosed affidavit, <br /> following Exhibit C, signed by the landowner ensuring the mining access road may remain on <br /> the site after mining. <br /> Support and maintenance equipment will come to the site on an as-needed basis.No night <br /> mining activity is scheduled for the operation; however,portable lighting may be used within the <br /> pit from time to time. Portable lights will only be used for the purpose of equipment maintenance <br /> activities within permitted hours in the winter months while the days are shorter. <br /> The Operator commits to clearly marking the permit boundary on all sides. No problems are <br /> expected with vandalism. <br /> Stormwater drainage on the onsite disturbed areas will be managed so as to direct all stormwater <br /> to either the active working area or the sump area by berms and ditches that border all disturbed <br /> areas of the site. All surface stormwater in the site the drain to the sump,as shown on Map E-2, <br /> where it will infiltrate into the porous ground surface within 72 hours. <br /> No stormwater or process water will discharge from the site on the surface and all runoff from a <br /> 100 year 24-hour rain event will be trapped on site and waters will infiltrate the mine floor or <br /> sump within 72 hours.All onsite drainages will be directed to the sump. Excepting the highwall, <br /> slopes in the area of drainages will be maintained at or shallower than 3H:1 V. As no surface <br /> stormwater will leave or is anticipated to leave the site,a CDPHE Storm Water Discharge permit <br /> is not required. <br /> 4. Topsoil and Overburden Handling <br /> Topsoil will be salvaged from the mined area and placed in a berm in the northwest corner of the <br /> site. The berm is shown at the perimeter of the permit boundary on Map E-2,the maximum <br /> disturbance limit. The topsoil berms will be created by stripping topsoil from Stage 1. The <br /> Weimer Ranches #4 CM f a icki aid AWKialtl%N 11- <br /> June 2021 C-4 <br />