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Hernandez, Alpha <br />From: Kaldenbach, Tom <br />Sent: Tuesday, January 11, 2011 1:56 PM <br />To: Hernandez, Alysha <br />Cc: Hernandez, Daniel <br />Subject: FW: Spring 2010 Subsidence Report Response <br />Attachments: DOC_20110107121128.PDF; Appendix B - Grid Data Comparison (2007-2009) <br />RESORTED.pdf; Appendix C - Table 1.pdf <br />Alysha, <br />Please insert this email, with attachments, into Laserfiche under: <br />C1980007 <br />Reports <br />Spring 2010 Subsidence Report, Operator responses to DRMS review comments. <br />Thanks, <br />Tom <br />From: Sweetwood, Ryan jmaiIto: RSweetwood@archcoaLcoml <br />Sent: Tuesday, January 11, 2011 1:46 PM <br />To: Kaldenbach, Tom <br />Cc: Welt, Kathy <br />Subject: Spring 2010 Subsidence Report Response <br />Tom, <br />In response to your review of the Spring 2010 Subsidence Report (fist attached document), I have provided the following <br />responses: <br />1. All subsidence data related to the E1 subsidence grid has been submitted. The confusion comes from the <br />multiple names each location received. For your use, the second attachment (Appendix B - Grid Data <br />Comparison RESORTED) is the data resorted. The numbers you have referred to (200-319) are used by the <br />surveyors. The far let column (S01-S124) is the appropriate column needed for your review. <br />2. Both the contractor and MCC forgot to include Table 1 of Appendix C. Please place the third attachment in your <br />copy of the Spring 2010 Subsidence Report. <br />Please let me know if you have any further questions. <br />Ryan Sweetwood <br />Environmental Engineer <br />Mountain Coal Company L.L.C. <br />West Elk Mine <br />P.O. Box 591 <br />Somerset, CO 81434 <br />970-929-2308 <br />***Email Disclaimer: The information contained in this e-mail, and in any accompanying documents, may constitute <br />confidential and/or legally privileged information. The information is intended only for use by the designated recipient. If <br />you are not the intended recipient (or responsible for delivery of the message to the intended recipient), you are hereby <br />notified that any dissemination, distribution, copying, or other use of, or taking of any action in reliance on this e-mail is