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Colowyo Coal Company Stockpond Inspections <br />5731 State Highway 13 East Pit <br />Meeker, CO 81641 <br />Third Quarter 2014 <br />I am a Licensed Professional Engineer in the State of Colorado. The information contained in this document <br />was provided by Colowyo Coal L.P. Being familiar with the Colowyo operation, and relying on the information <br />provided to me by Colowyo Personnel, the information contained herein is reasonable and correct to the best of <br />Note: (d) impoundment volumes are estimated from pre- existing as -built surveys, and estimates of accumulated sediment. <br />CF 21.1.2 2014 <br />``````��I11111111///�7''''' <br />= 47031 <br />.� -17 -1 `l <br />PD1 <br />PD2 <br />NTEP1 <br />EP1 <br />EP2 <br />Inspection Date: <br />9/17/2014 <br />9/17/2014 <br />9/17/2014 <br />9/17/2014 <br />9/17/2014 <br />Inspector: <br />Kurt Blunt <br />Kurt Blunt <br />Kurt Blunt <br />Kurt Blunt <br />Kurt Blunt <br />Lee Sampson <br />Lee Sampson <br />Lee Sampson <br />Lee Sam son <br />Lee Sam son <br />Rule 4.05.9 (15) <br />La) <br />Does pond exhibit <br />None <br />None <br />None <br />None <br />None <br />structural weakness, <br />erosion, or other <br />hazardous conditions? <br />( b ) <br />Quarterly/ <br />Quarterly/ <br />Quarterly/ <br />Quarterly/ <br />Quarterly/ <br />Monitoring Procedures <br />Annual <br />Annual <br />Annual <br />Annual <br />Annual <br />and Instrumentation <br />Inspections <br />Inspections <br />Inspections <br />Inspections <br />Inspections <br />L� <br />Elevation & As -built <br />7354.5 <br />7560.0 <br />7382.0 <br />7374.8 <br />7495.0 <br />Depth Water Level <br />( d ) <br />Existing Storage <br />1.10 ac -ft. <br />1.49 ac -ft. <br />2.03 ac -ft. <br />1.29 ac -ft. <br />2.43 ac -ft <br />Capacity <br />Le) <br />Design storage below <br />1.10 ac -ft. <br />1.49 ac -ft. <br />2.03 ac -ft. <br />1.29 ac -ft. <br />2.43 ac -ft <br />weep holes /primary <br />discharge (ac -ft.) <br />Lf 1 <br />Pumping to <br />Pumping into <br />Maintenance Items <br />lower water <br />None <br />None <br />None <br />EP1 to lower <br />level <br />water level <br />I am a Licensed Professional Engineer in the State of Colorado. The information contained in this document <br />was provided by Colowyo Coal L.P. Being familiar with the Colowyo operation, and relying on the information <br />provided to me by Colowyo Personnel, the information contained herein is reasonable and correct to the best of <br />Note: (d) impoundment volumes are estimated from pre- existing as -built surveys, and estimates of accumulated sediment. <br />CF 21.1.2 2014 <br />``````��I11111111///�7''''' <br />= 47031 <br />.� -17 -1 `l <br />