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Hernandez, Alysha <br />From: <br />Musick, Jason <br />Sent: <br />Monday, April 02, 2012 1:25 PM <br />To: <br />Karo, Roy <br />Cc: <br />James, Jay; Bowles, Brock; david @escoassoc.com; Binns, Janet; DRMS - Coal -Admin <br />Subject: <br />Alternative Approach Cover Standard for the Peabody Sage Creek Mine SL1 and Seneca II <br />Mlne SL5 <br />Roy, <br />During a meeting on March 12, 2012 with ESCO (on behalf of PSCM and Seneca II) and the Division, ESCO provided <br />information regarding an alternative approach to establishing the first -hit herbaceous cover standard from the <br />Mountain Brush Reference Area. ESCO proposed using 15.12 (the highest possible value with 90% confidence) as the <br />value to be taken forth to the weighing formula prescribed in the permit. The Division conducted a review of both the <br />PSCM and the Seneca II Mine permits to determine if language in the permits would contradict or disallow this statistical <br />approach. After the review, the Division has determined that no language exists in the permits . <br />At this point, if it is the intention of PSCM and Seneca II to use the alternative approach to establishing the first -hit <br />standard outlined by ESCO, the information should be submitted for review for both the PSCM, SL1 application and the <br />Seneca II, SL5 application. <br />If you have any questions or comments, please let me know. <br />Thanks, <br />Jason <br />Jason Musick <br />Environmental Protection Specialist <br />Division of Reclamation, Mining and Safety <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />303 - 866 -3567, Extension 8134 <br />303 - 832 -8106 Fax <br />Jason. musick(@state. co. us <br />