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_2_ <br />Mining in the requested area will be strictly development work <br />with no secondary extraction. Overburden depth will range from 900 <br />to 2000 feet, therefore, no surface effects will result from the <br />proposed development work. Coal recovery will be 177 in the slope <br />entries and 507 in the panel entries. <br />Existing surface facilities will be used and no additional <br />surface disturbance will be necessary for the proposed underground <br />development work. Surface land use ("unimproved rangeland") in the <br />affected area will remain unchanged. <br />Due to the depth of overburden (900' - 2000') and the fact: <br />that development mining will be directed away from North Thompson <br />Creek, the proposed work will have no affect on surface waters in <br />the mine area. <br />Groundwater considerations have previously been addressed in <br />Vol.l, page 20 and appendix G of permit No.77-313. Additional <br />information has been presented in the Final Permit Application <br />which is currently under-going review. <br />If I may be of further assistance in your consideration of <br />this proposed revision please contact me a~t the mine office. <br />C' Y Q ~F~~~ 2 <br />Craig A. Sherwood <br />Environmental Coordinator <br />