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Colowyo Coal Company Stockpond Inspections <br />5731 State Highway 13 <br />Meeker, CO 81641 <br />Second Quarter 2017 <br />Notes: <br />- Impoundment volumes(d) are estimated from pre-existing as -built surveys, and estimates of accumulated <br />sediment <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 <br />of my knowledge and experience <br />Stockpond Insp 2nd_Qtr_2017 <br />�47 ,. <br />G 2'7a <br />PD1 <br />PD2 <br />NTEP1 <br />EP1 <br />EP2 <br />ET1 <br />ET2 <br />ETD1 <br />Inspection Date <br />6/27/2017 <br />6/27/2017 <br />6/27/2017 <br />6/27/2017 <br />6/27/2017 <br />6/27/2017 <br />6/27/2017 <br />6/27/2017 <br />Inspector <br />Kurt Blunt <br />Kurt Blunt <br />Kurt Blunt <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 Sampson <br />Lee Sampson <br />Lee Sampson <br />Lee Sampson <br />Lee Sampson <br />Rule 4.05.9 (15) <br />1a) <br />Does pond exhibit <br />No <br />No <br />No <br />No <br />No <br />No <br />No <br />No <br />structural weakness, <br />erosion, or other <br />hazardous conditions? <br />1b) <br />Quarterly <br />Quarterly <br />Quarterly <br />Quarterly <br />Quarterly <br />Quarterly <br />Quarterly <br />Quarterly <br />Monitoring Procedures <br />and Instrumentation <br />Inspection <br />Inspection <br />Inspection <br />Inspection <br />Inspection <br />Inspection <br />Inspection <br />Inspection <br />1c) <br />Elevation & As -built <br />73550 <br />7561 0 <br />7382.0 <br />73778 <br />74950 <br />72820 <br />74480 <br />72830 <br />Depth Water Level <br />1d) <br />Existing Storage <br />0 98 ac -ft <br />1 49 ac -ft <br />2 02 ac -ft <br />1 24 ac -ft <br />2.19 ac -ft <br />0 74 ac -ft <br />2 33 ac -ft <br />0 915 ac -ft <br />Capacity <br />!e1 <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 />0 74 ac -ft <br />2 33 ac -ft <br />0 915 ac -ft <br />weep holes/pnmary <br />discharge (ac -ft ) <br />Ll <br />None <br />None <br />None <br />None <br />Pumping <br />None <br />None <br />None <br />Maintenance Items <br />Notes: <br />- Impoundment volumes(d) are estimated from pre-existing as -built surveys, and estimates of accumulated <br />sediment <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 <br />of my knowledge and experience <br />Stockpond Insp 2nd_Qtr_2017 <br />�47 ,. <br />G 2'7a <br />