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To: Nettleton, Jerry <br />Subject: RE: PR09-08 Technical Adequacy Response III <br />Jerry, <br />Only one comment: Should the Twentymile Sandstone hydraulic conductivity from page 64 of Robson and Stewart be <br />1.4 X10-2, rather than 5.1 X 1-3? Please revise the analysis , if necessary to reflect the correct value. <br />Tom <br />From: Nettleton, Jerry [mailto:JNettleton@peabodyenergy.com] <br />Sent: Thursday, October 29, 2009 10:23 AM <br />To: Kaldenbach, Tom <br />Cc: Binns, Janet; Berdine, Mike; Cowman, Scott; Thompson, Rocky <br />Subject: PR09-08 Technical Adequacy Response III <br />Tom - <br />Attached is the requested table and supporting drawdown calculations responding to your adequacy comment on the <br />above-referenced revision. Please review and call me with any questions - <br />Best regards, <br />Jerry <br />Jerry M. Nettleton <br />Environmental Manager <br />Twentyn le Coal Company <br />29515 RCR27 <br />Oak Creek, Colorado 80467 <br />970.870.2712 <br />jnettleton@peabodyenergy.com <br />E-mail Disclaimer: The information contained in this e-mail, and in any accompanying documents, may <br />constitute confidential and/or legally privileged information. The information is intended only for use by <br />the designated recipient. If you are not the intended recipient (or responsible for the delivery of the <br />message to the intended recipient), you are hereby notified that any dissemination, distribution, copying, <br />or other use of, or taking of any action in reliance on this e-mail is strictly prohibited. If you have <br />received this email communication in error, please notify the sender immediately and delete the message <br />from your system. <br />2