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Colowyo Coal Company Stockpond Inspections <br />5731 State Highway 13 East Pit <br />Meeker, CO 81641 <br />T 970 - 824 -1573 3rd Quarter 2012 <br />I am a Licensed Professional Engineer in the State of Colorado and a representative of Environmental Solutions, Inc., P. O. Box <br />2996, Cheyenne Wyoming. The information contained in this document was provided by Colowyo Coal L.P. Being familiar with <br />the Colowyo operation and the coal permitting process in Colorado, the information contained herein is reasonable and correct to <br />the best of my experience. <br />Note (d) impoundment volumes are estimated from pre - existing as -built surveys, and estimates of accumulated sediment <br />CF 21 1 2 2011 <br />C;e'�i,,i <br />UO i�S 7'n�•: Q <br />32257 <br />po•; 9/13/124 i <br />32257 <br />PD1 : <br />P02 <br />NTEP4 <br />EP1 <br />:``�',r).,EP2 <br />Inspection Date <br />9/13/2012 <br />9/13/2012 <br />9/13/2012 <br />9/13/2012 <br />9/13/2012 <br />Inspector <br />Kurt Blunt/Tom <br />Kurt Blunt/Tom <br />Kurt Blunt/Tom <br />Kurt Blunt/Tom <br />Peterson <br />Peterson <br />Peterson <br />Peterson <br />NA <br />Rule 4.05.9 (15) <br />Ll <br />Does pond exhibit <br />No <br />No <br />No <br />No <br />Not <br />structural weakness, <br />Constructed <br />erosion, or other <br />hazardous conditions? <br />( b ) <br />Quarterly/ <br />Quarterly/ <br />Quarterly/ <br />Quarterly/ <br />Monitoring Procedures <br />Annual <br />Annual <br />Annual <br />Annual <br />NA <br />and Instrumentation <br />Inspections <br />Inspections <br />Inspections <br />Inspections <br />1 c 1 <br />7350.5 ft <br />7559.0 ft <br />7383 O ft <br />7374.8 ft <br />Elevation & As -built <br />current level <br />current level <br />current level <br />current level <br />NA <br />Depth Water Level <br />( d ) <br />Existing Storage <br />1.09 ac -ft <br />1.49 ac -ft <br />2.02 ac -ft. <br />1.29 ac -ft. <br />NA <br />Capacity <br />( e ) <br />Maintenance Items <br />None <br />None <br />None <br />None <br />NA <br />I am a Licensed Professional Engineer in the State of Colorado and a representative of Environmental Solutions, Inc., P. O. Box <br />2996, Cheyenne Wyoming. The information contained in this document was provided by Colowyo Coal L.P. Being familiar with <br />the Colowyo operation and the coal permitting process in Colorado, the information contained herein is reasonable and correct to <br />the best of my experience. <br />Note (d) impoundment volumes are estimated from pre - existing as -built surveys, and estimates of accumulated sediment <br />CF 21 1 2 2011 <br />C;e'�i,,i <br />UO i�S 7'n�•: Q <br />32257 <br />po•; 9/13/124 i <br />32257 <br />