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Peabody Twentymile Mining LLC <br />October 13, 2014 <br />Russell J. Riley <br />MSHA, Coal District 9 <br />Denver Federal Center <br />6th and Kipling <br />2"d Street, Building #25, E-16 <br />Denver, Colorado 80225 <br />RE: Foidel Creek Mine <br />ID # 05-03836 <br />Dear Mr. Riley: <br />/ SSsYo Tj <br />RECEIVED <br />BET 14= <br />29515 Routt County Road #27 <br />Oak Creek, Colorado 80467 <br />970.879 3800 <br />30 CFR §75.1716-1 <br />Operations under water notification <br />In compliance with 30 CFR §75.1716-1, please let this letter and the accompanying documents serve as notification <br />to MSHA that the first tailgate of the Wolf Creek seam reserve will require development mining under a portion of <br />the Wadge seam gob that contains ponded water. The water level in the overlaying Wadge seam gob has been <br />verified through the monitoring well that was drilled in the 19 Right Gateroad. Included with this notification are the <br />following: <br />• Map #1 — Wolf Creek Seam Projections <br />• Memorandum — Stability of the Gateroad in the Wolf Creek Seam Under the Wadge Seam Water Pool by <br />Dr. Murali M. Gadde and Dr. Anil K. Ray. <br />The attached memorandum contains numerical and empirical analysis of the interburden between the Wadge and <br />Wolf Creek seams. The memorandum concludes that development mining in the Wolf Creek seam can be done <br />safely underneath of the Wadge seam water pool. The Wadge seam gob will be adequately dewatered prior to <br />longwall mining in the affected area. <br />If you have any questions regarding this submittal, please contact me at 970-875-2150. Thanks for your cooperation <br />in this matter. <br />Sincerely, <br />Adam Patterson <br />Compliance Manager <br />Cc: <br />Pat Sollars <br />Allen Meckley <br />Eric Knez <br />Brent Stierwalt <br />Ron Hockett <br />Mike Zimmerman <br />Josh Boulger <br />Nick Boeckmann <br />Mike Crum <br />Jerry Delay <br />Chris Burkett <br />Cody Bartkoski <br />Mike Berdine <br />Dale King <br />Nick Aromando <br />c\acad\msha approvals\roof control plan\wolf creek\mimng under bodies of water penmt\2014, 10-05 - cover letter - operations under water notification docx <br />