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XV. Explosives (2.05.3(6)) <br />No surface blasting is planned to occur at this operation. Therefore, the <br />proposed operation is in compliance with this section. <br />XVI. Coal Processing Waste and Non-Coal Processing Waste (2.05.3(8), 2.05.4 <br />There is no non-coal processing waste produced at the mines. However, coal <br />processing waste is generated at this mine. Information on coal processing <br />waste and coal processing waste embankments can be found in Section 2.05.3 of <br />Volume I and Appendix T of Volume VI of the application. Information on Cameo <br />Refuse Areas Nos. 2 and 3 can be found in Section 2.05.3(8) of the permit <br />revision application. <br />Raw coal mined at the Roadside and Cameo mines is segregated at the <br />preparation plant, located near the Roadside mine, with clean coal being <br />conveyed to a loadout facility. The reject material is transported by truck <br />to the disposal site. <br />Coal processing waste is currently being disposed of at a site located about <br />one-half mile east of the Cameo mine. Prior to January, 1981, coal processing <br />waste was disposed of at a disposal area near the Roadside mine. This area is <br />no longer used for coal processing waste disposal. <br />Geotechnical analyses in Appendix T of Volume VI of the application show that <br />both the Roadside and Cameo No. 1 piles are stable at a minimum safety factor <br />of 1.5. As previously stated, the Roadside pile is no longer used, and will <br />be reclaimed during this five-year permit term. The Cameo No. 1 pile is to <br />have side slopes of 2.3:1 with a crest elevation of 5,025 feet. This <br />configuration will result in a static safety factor of 1.74, and a pile <br />capacity of 2,240,000 cubic yards. <br />The Division finds this pile to be in compliance with all applicable standards. <br />The pile will be monitored throughout construction. Monitoring will include: <br />1) Peizometric monitoring of the coal processing waste embankment to assess <br />the accuracy of the assumptions used in the design analysis; 2) Monitoring of <br />side slopes to maintain a maximum slope angle of 2.3:1; 3) Monitoring <br />compaction to attain a minimum dry density of 90 pcf and; 4) Quarterly <br />inspection for stability by a registered professional engineer. <br />Geotechnical analyses in Appendix VV of the permit revision application show <br />that both the Cameo Nos. 2 and 3 piles are stable at a minimum safety factor <br />of 1.5. The outslopes will be constructed with 2.5:1 slopes between 15 feet <br />wide horizontal benches at 30 feet vertical spacings, yielding an average <br />slope gradient of 3:1. <br />The Division finds the design of Cameo Refuse Areas Nos. 2 and 3 to be <br />incompliance with all applicable standards. <br />i~ <br />-31- <br />