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Saturday, September 27, 2814 <br />Mr. Mike Berdine <br />Manager — Technical Resources <br />Peabody Energy <br />Twentymile Coal LLC <br />Foidel Creek Mine <br />Re: Subsidence Report for the Permit Revision for Longwwall Coal Mining in the Wolf Creek <br />Seam at the Foidel Creek Mine <br />Dear Mike: <br />Please find attached the Final Subsidence report for input to the Permit Revision for Longwall Coal <br />Mining in the Wolf Creek seam at the Foidel Creek Mine. This report was prepared in accordance <br />with our proposal dated October 11, 2813, your authorization to proceed of February, 2814, <br />comments received on the June 25 Draft Report, and our MPA with Peabody Energy completed <br />July 31, 2012. <br />There are several planning areas that will need to be addressed after permit approval but prior to <br />starting the mining work and these include: <br />1. Surveying the Energy Spur between Station 398 and Station 558. <br />2. Locating and surveying ends of culverts that route surface water under the railroad track. <br />3. Installing and surveying monuments on the Power Line Structures prior to undermining. <br />Thanks for the opportunity to be of service. if you have any questions please do not hesitate to call <br />us at 425 -888 -5425. <br />Sincerely, <br />Chris D. Breeds, PE, PhD <br />President, SubTerra, Inc. <br />Post Office Box 520. 218 East North Bend Way, North Bend. WA 98045 -0520 <br />Phone (425) 888 -5425 Web Site: www subterraus Email: info@) subterra.us Fax (425) 888 -2725 <br />Civil & Mining Engineering <br />Engineering Geology <br />Tunnel engineering & Construction Management <br />Rapid bandotionr5 Systems <br />SubTerra, Inc. <br />Mine S <br />Active/Abandoned Mine Sut�sidence <br />, !i <br />Quality Assurance r Quality Control <br />= - <br />Safety Mcnitoring of Structures <br />Blast Optimization; Vibration Monitoring <br />Mine & Quarry !Permuting <br />Material Science / Laboratory Testing <br />Saturday, September 27, 2814 <br />Mr. Mike Berdine <br />Manager — Technical Resources <br />Peabody Energy <br />Twentymile Coal LLC <br />Foidel Creek Mine <br />Re: Subsidence Report for the Permit Revision for Longwwall Coal Mining in the Wolf Creek <br />Seam at the Foidel Creek Mine <br />Dear Mike: <br />Please find attached the Final Subsidence report for input to the Permit Revision for Longwall Coal <br />Mining in the Wolf Creek seam at the Foidel Creek Mine. This report was prepared in accordance <br />with our proposal dated October 11, 2813, your authorization to proceed of February, 2814, <br />comments received on the June 25 Draft Report, and our MPA with Peabody Energy completed <br />July 31, 2012. <br />There are several planning areas that will need to be addressed after permit approval but prior to <br />starting the mining work and these include: <br />1. Surveying the Energy Spur between Station 398 and Station 558. <br />2. Locating and surveying ends of culverts that route surface water under the railroad track. <br />3. Installing and surveying monuments on the Power Line Structures prior to undermining. <br />Thanks for the opportunity to be of service. if you have any questions please do not hesitate to call <br />us at 425 -888 -5425. <br />Sincerely, <br />Chris D. Breeds, PE, PhD <br />President, SubTerra, Inc. <br />Post Office Box 520. 218 East North Bend Way, North Bend. WA 98045 -0520 <br />Phone (425) 888 -5425 Web Site: www subterraus Email: info@) subterra.us Fax (425) 888 -2725 <br />