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• Oakridge Energy, Inc., will endeavor to practice every safety precaution with respect <br />to the storage, handling, and use of explosives. The State, M.S.H.A. and other federal <br />regulations will be complied with. <br />2.05.3(71 Coal Handline Structures <br />The structures associated with coal handling have been identified and discussed <br />previously in this permit. These structures include two raw coal stockpiles and an in- <br />pit staging area with crusher/screener equipment. Raw coal which requires ash <br />removal or other cleaning will be screened, crushed and separated in the pit. Coal not <br />requiring ash removal will be trucked directly to the staging azea. The staging area <br />will be used for surge capacity and blending for the customer. The coal will be trucked <br />from the pit azea to the staging area where it will be transported on highway trucks to <br />markets. <br />2.05.3(8) Coal ProcessinP Waste <br />Any coal processing waste will be kept within the confines of the pit or returned to the <br />pit. No refuse or coal processing waste will be impounded and no coal refuse or reject <br />will accumulate outside of the pit. Depending upon customer needs, the coal reject is <br />expected to account for up to 22 percent of the raw coal volume (300,000 cubic yards <br />• over the life of the mine). The coal reject is to be selectively mined in the pit and will <br />not be removed to the surface. This number was based upon a coal flotation test <br />simulating a coal preparation plant The test for coal reject were performed by Core <br />Labs, Inc. in Denver, Colorado (Appendix 4-3). Quality analysis of typical coal reject <br />to be returned to the pit has been included in Table 4-1. <br />The processing waste analysis indicates that sulfur may be present in various forms but <br />in low quantities, i.e. two to three percent (2 to 3%). This low quantity is not expected <br />to be acid forming because it is not acid forming in the coal seams. Note, the analysis <br />of the groundwater samples in Appendix 4-3A. <br />No slurry ponds or wash slurries are proposed as a part of the mining in this plan. No <br />coal fines aze expected to be generated as a part of the mining activity. The coal fines, <br />as they exist in the coal seams, are neither acid nor toxic forming. If pit dewatering is <br />necessary, the water will be pumped to Pond No. 1 and discharged in compliance with <br />the NPDES Permit. <br />Placement of the crushed waste was previously discussed. Reject materials which will <br />occasionally accumulate around the storage area will be temporarily stored in quantities <br />not to exceed 10,000 LCY, near the pit highwall and placed next to the highwall in the <br />backfill 20 feet above the 6,870 foot elevation line. This material will be loose <br />accumulation of rock and miscellaneous surface materials. <br />C~ <br />Technical Revision 08 (v 1.3) 5-17 Revised 9/1997 <br />