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Bowie Resources, LLC <br />Page 2 <br />11/17/2015 <br />additional piezometers in the expansion section are needed. Please provide details for additional <br />piezometers within Gob Pile #3 expansion section or a justification as to why additional <br />piezometers are not required. In addition, please update Volume XI - Coal Mine Waste Disposal <br />Area No.3 Figure 1 to include the addition of piezometers if needed. <br />3. Stability analysis of Gob Pile #3 was performed in the Report at critical sections of the pile. The <br />design of the expansion section appears to remain consistent with the current construction and <br />design of Gob Pile #3 with critical sections remaining unchanged. Thus, HBET's stability analysis <br />is representative of the expanded section so an additional stability analysis isn't necessary. <br />However, please update Figure 1 or provide a new full bulid out cross sectional view of the <br />expanded section of gob pile #3 to ensure the design of the pile remains consistent and allows <br />for the Division to perform a stability "check". <br />If you have any questions or comments feel free to contact me. (303) 866-3567 ext 8134 <br />Sincerely, <br />Jason Musick <br />Environmental Protection Specialist <br />Jason. musick@sate.co. us <br />