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Colowyo Coal Company <br />5731 State Highway 13 <br />Meeker, CO 81641 <br />Outfall Inspection - Ponds <br />2nd Quarter 2013 <br />Year <br />I am a Licensed Professional Engineer in the State of Colorado and a representative of Environmental Solutions, Inc , P O. Box 2996, Cheyenne <br />Wyoming. The information contained in this document was provided by Colowyo Coal L.P. Being familiar with the Colowyo operation and the coal <br />permitting process in Colorado, the information contained herein is reasonable and correct to the best of my experience <br />Note (d) impoundment volumes are estimated from pre - existing as -built surveys, pond cleaning, and estimates of accumulated sediment <br />Selected ponds (Prospect, Streeter, West Taylor, and East Taylor) underwent field survey updates in 2012 <br />CF 21 1 2 2012 <br />1, : •C' Pft '. J' <br />Q�� �0. O <br />32257 = <br />5'/ <br />6 /2 13x' <br />►OAF•••'••...••'•• <br />32257 <br />001A <br />002A <br />003A <br />004A <br />005A <br />006A <br />007A <br />008A <br />009A <br />010A <br />011A <br />012A <br />Streeter <br />Work Area <br />Gossard <br />Gulch A <br />Stoker Siding <br />Rail Loop <br />Prospect <br />West Pit <br />Section 16 <br />East Taylor <br />West Taylor <br />Sec. 28 <br />Sediment Pond <br />Pond <br />Loadout Pond <br />Pond <br />Pond <br />Pond <br />Pond <br />Pond <br />Pond <br />Pond <br />Pond <br />Pond <br />Inspection Date <br />6/25/2013 <br />6/25/2013 <br />6/25/2013 <br />6/25/2013 <br />6/25/2013 <br />6/25/2013 <br />6/25/2013 <br />6/25/2013 <br />6/25/2013 <br />6/25/2013 <br />6/25/2013 <br />6/25/2013 <br />K Blunt/ <br />K Blunt/ <br />K Blunt/ <br />K Blunt/ <br />K Blunt/ <br />K Blunt/ <br />K Blunt/ <br />K Blunt/ <br />K Blunt/ <br />K Blunt/ <br />K Blunt/ <br />K Blunt/ <br />Inspector <br />L Sampson/ <br />L Sampson/ <br />L Sampson/ <br />L Sampson/ <br />L Sampson/ <br />L Sampson/ <br />L Sampson/ <br />L Sampson/ <br />L Sampson/ <br />L Sampson/ <br />L Sampson/ <br />L Sampson/ <br />T Peterson <br />T Peterson <br />T Peterson <br />T Peterson <br />T Peterson <br />T Peterson <br />T Peterson <br />T Peterson <br />T Peterson <br />T Peterson <br />T Peterson <br />T Peterson <br />Rule 4.05.9 (15) <br />(a) <br />Does pond exhibit <br />No <br />No <br />No <br />No <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 />( b ) <br />Quarterly/ <br />Quarterly/ <br />Quarterly/ <br />Quarterly/ <br />Quarterly/ <br />Quarterly/ <br />Quarterly/ <br />Quarterly/ <br />Quarterly/ <br />Quarterly/ <br />Quarterly/ <br />Quarterly/ <br />Monitoring Procedures <br />Annual <br />Annual <br />Annual <br />Annual <br />Annual <br />Annual <br />Annual <br />Annual <br />Annual <br />Annual <br />Annual <br />Annual <br />and Instrumentation <br />Inspections <br />Inspections <br />Inspections <br />Inspections <br />Inspections <br />Inspections <br />Inspections <br />Inspections <br />Inspections <br />Inspections <br />Inspections <br />Inspections <br />(c) <br />Elevation & As -built <br />658310 <br />715050 <br />6389.50 <br />Dry <br />6325.00 <br />6346.50 <br />6741 50 <br />Dry <br />774450 <br />694400 <br />7468.30 <br />Dry <br />Depth Water Level <br />f d 1 <br />1 03 ac -ft., <br />Existing Storage <br />1 52 ac -ft. <br />8 71 ac -ft <br />2 41 ac -ft <br />3 56 ac -ft. <br />0 45 ac -ft. <br />cleanout in <br />1.56 ac -ft <br />4 64 ac -ft <br />1 32 ac -ft. <br />1.26 ac -ft. <br />0.41 ac -ft <br />1.70 ac -ft <br />Capacity <br />progress <br />Partial cleaning <br />done Q32012, <br />Partial <br />iJ <br />cleanout <br />3,110 cu yd, final <br />Cleaning <br />Maintenance Items <br />Cleanout <br />None <br />None <br />None <br />None <br />None <br />completed <br />None <br />None <br />survey completed, <br />y com p <br />needed In <br />None <br />recommended <br />Re -Survey <br />Q32012, 3,010 <br />2013 <br />Recommended, <br />cu yds <br />Leak at inlet <br />needs repair <br />I am a Licensed Professional Engineer in the State of Colorado and a representative of Environmental Solutions, Inc , P O. Box 2996, Cheyenne <br />Wyoming. The information contained in this document was provided by Colowyo Coal L.P. Being familiar with the Colowyo operation and the coal <br />permitting process in Colorado, the information contained herein is reasonable and correct to the best of my experience <br />Note (d) impoundment volumes are estimated from pre - existing as -built surveys, pond cleaning, and estimates of accumulated sediment <br />Selected ponds (Prospect, Streeter, West Taylor, and East Taylor) underwent field survey updates in 2012 <br />CF 21 1 2 2012 <br />1, : •C' Pft '. J' <br />Q�� �0. O <br />32257 = <br />5'/ <br />6 /2 13x' <br />►OAF•••'••...••'•• <br />32257 <br />