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Water & Earth Technologies, Inc. <br />Water Resouran and Enviravnental ConsuNing <br />August 27, 2004 <br />Mr. Michael A. Berdine <br />Manager of Tech Services <br />Twentymile Coal Company <br />29515 Routt County Road #27 <br />Oak Creek, Colorado 80467 <br />RE: SEDCAD Modeling and Design Reports for Intake Shaft Facility Drainage and Sediment Control <br />System Design, and Access Road Drainage Ditch and Culvert Design <br />Dear Mr. Berdine: <br />Water & Earth Technologies, Inc. (WET) is pleased to have had the opportunity to conduct the analysis <br />and produce the final designs for the subject reports. Rob Niedenzu will transmit to you via email a .pdf <br />file of each report (with P.E. stamp and signatures electronically attached), including figures and <br />SEDCAD output. <br />Enclosed are the two subject reports (with report signature pages and figures with original signatures and <br />dates as required by the State of Colorado for the Professional Engineer Design Certifications). The <br />enclosures have been organized into two separate packages. <br />• Rob Niedenzu will also transmit via email .dxf files of the different mapping layers used to produce <br />Figure 1 so that you can easily modify your AutoCAD map files to include the new design information. <br />Again, thank you for this opportunity to provide engineering design services to Peabody Energy <br />Twentymile Coal Company. Please call me or Rob Niedenzu if you have any questions regarding the <br />email transmittal or the enclosed information. <br />;iincerely, <br />Water & Earth Technolog' s, Inc. <br />Ric and S offs, P,A~a <br />P <br />President <br />Principal Engineer/Hydrologist <br />Enclosures <br />cc: A155 Project File <br />R. Niedenzu w/o enclosures <br /> <br />1225 Red Cedar Circle, Suite A • Fort Collins, Colorado, USA • 80524 <br />alnre:1970) 225-6080. rte:1970) n66990 . EmaiLinfoawohrvnd~wr~h.com . W.b situ: hnP://wakr-a~d+onh.cem <br />