2016-02-03_PERMIT FILE - C1981038 (2)

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42.04 APPLICATION FOR PERMi[T FOR SURFACE OR UNDERGROUND MINING ACTIVITIES -- MINIMUM REQUIREMENTS FOR INFORMATION ON ENVIRONMENTAL RESOURCES. 2.04.6 Geology Description. (2) (a) (v) (Cont'd.) (A) Refer to the Hydrology and Environmen- tal Resources Appendices in Volianes 4 and 9, respectively. Also refer to sheets 2 and 3 of the Orchard Valley West Portals designs in Voliane 6B. (B) Refer to the Hydrology and Environmen- tal Resources Appendices in Volune 4 and 9, respectively. Also refer to sheets 2 and 3 of the Orchard Valley West Portals designs in Voliane 6B. Laboratory analyses of samples obtained from drill holes near the proposed rock slope portals and entries were complet- ed. The results of the analyses are in the Waste Disposal Appendix in Volune 6A. No potential acid-forming, toxic- forming or alkalinity producing materi- • als were identified in the gray sand- stones nor in the brown sandstones. When compared to the Division's and Wy- oming Department of Environmental Qual- ity sail suitability criteria, the coaly shale strata was determined un- suitable based upon pH, total combusti- ble solids and acid base potential (Harner & Associates, Inc., correspon- dence dated April 22, 1987). Though native species have been observed grow- ing and reproducing in coal y, low pH materials, C[dI would segregate coaly shale material as much as possible dur- ing development of the rock slope en- tries and place it in the fills at least four feet below the final sur- face. Revised 08/01/84 • Revised 10/12/86 - Added 07/13/87 Revised 07/13/87 Revised 10/01/87 26