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ANNUAL IMPOUNDMENT INSPECTION <br />Colowyo Coal Company SMALL IMPOUNDMENTS / STOCK PONDS <br />5731 State Highway 13 <br />Meeker, CO 81641 <br />T: 97o-824-1200 <br />DATE:9/19/16 <br />COLOWYO COAL COMPANY L.P <br />`� •..... F'2 iii <br />t�K• :• i <br />I am a Licensed Professional Engineer in the State of Colorado. The information contained in this document was <br />provided by Colowyo Coal L.P Being familiar with the Colowyo operation, and relying on the information provided tome = 47031 ' <br />by Colowyo Personnel, the information contained herein is reasonable and correct to the best of my knowledge and 9-/9-/(, <br />experience. %. �^� �••. <br />Certified By: I-1/101111111111 <br />L <br />Date: 6 <br />Lee E. Sampson <br />9-/q-/ <br />CF 21 12 2015 Note. (d) impoundment volumes are estimated from existing as -built surveys and estimates of accumulated sediment <br />Erosion, Instability, <br />Other Structural <br />Structural Weakness, <br />Monitoring procedures <br />Depth of <br />Elevation of <br />Existing Storage <br />Instability or Main <br />Experienced <br />Date <br />Hazardous Conditions <br />and Instrumentation <br />Impounded Waters <br />Impounded Waters <br />Capacity <br />Required <br />Impoundment <br />Of <br />Impoundment Name <br />4.05.9 (15)(a) <br />4.05 9 (15)(b) <br />4 05 9 (15)(c) <br />4 05 9 05)(c) <br />4 05 9 (15)(d) <br />4 05 9 (15)(e) <br />Inspector 4.05.9 14 <br />Inspection <br />Stock Pond G <br />None <br />Annual Inspections <br />12 in. <br />7790.0 ft. <br />0.278 ac -ft. <br />None <br />K. Blunt/ L. <br />9/19/2016 <br />Sampson <br />Stock Pond H <br />None <br />Annual Inspections <br />Dry <br />7870.0 ft. <br />0.219 ac -ft. <br />None <br />K. Blunt / L. <br />9/19/2016 <br />Sampson <br />Stock Pond I <br />None <br />Annual Inspections <br />Dry <br />7821.5 ft. <br />0.036 ac -ft. <br />None <br />K. Blunt / L. <br />9/19/2016 <br />Sampson <br />Stock Pond J <br />None <br />Annual Inspections <br />Temporarily covered by topsoil stockpile <br />K. Blunt/ L. <br />9/19/2016 <br />Sampson <br />Stock Pond K <br />None <br />Annual Inspections <br />Dry <br />7889.0 ft. <br />0.990 ac -ft. <br />None <br />K. Blunt/ L. <br />9/19/2016 <br />Sampson <br />`� •..... F'2 iii <br />t�K• :• i <br />I am a Licensed Professional Engineer in the State of Colorado. The information contained in this document was <br />provided by Colowyo Coal L.P Being familiar with the Colowyo operation, and relying on the information provided tome = 47031 ' <br />by Colowyo Personnel, the information contained herein is reasonable and correct to the best of my knowledge and 9-/9-/(, <br />experience. %. �^� �••. <br />Certified By: I-1/101111111111 <br />L <br />Date: 6 <br />Lee E. Sampson <br />9-/q-/ <br />CF 21 12 2015 Note. (d) impoundment volumes are estimated from existing as -built surveys and estimates of accumulated sediment <br />