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CF 21 1 2 2011 <br />Colowyo Coal Company <br />573 State Highway 13 <br />Meeker, CO 81641 <br />T 970 - 824 -1573 <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 are scheduled for field survey updates in 2012 <br />Outfall Inspection - Ponds <br />Outfall Point <br />2nd Quarter 2012 <br />Year <br />d :.1;T C t'flE �:o <br />V <br />:- 32257 S <br />G <br />i %NAL % <br />P.E. No. 32257 <br />, -. 001A;' <br />„002A!.' ". <br />: 403A;, <br />: :' oo4A ', '; <br />.. - : 005A ' : <br />, 006A <br />» • 007A <br />• • .008A . <br />=: i109A = ' <br />010A ','' ': <br />011A' . ' a <br />..012A <br />, , Other. <br />Other <br />Other <br />:Other . i <br />. Other . <br />. Streeter <br />Sediment Pond <br />' , Work Area <br />Pond a, <br />G''" ; rd <br />'LOOM* ' Po; <br />' ;Gulch A ' - - <br />P ond <br />Stoker Siding <br />' : 'Pond <br />. , .Rail, �.00p : ^h `; <br />' ' Pond <br />Prospect <br />Pond <br />West Pit <br />Pond <br />Sestibn 10 : <br />• Pend:: <br />East Taylor " <br />: Pond "` <br />::West Taylor ' <br />Pond <br />Sec. 28 <br />Pond ' <br />Wash Bay <br />Pond ' <br />Taylor Pump . <br />Holding Pond <br />ira ton <br />; Pona� <br />:West Overflow <br />_ <br />Pond <br />, Exist Overflrivir <br />Pond `. . <br />:1(Ya h <br />Sediment Sump <br />Inspection Date <br />6/11/2012 <br />6/11/2012 <br />6/11/2012 <br />6/11/2012 <br />6/11/2012 <br />6/11/2012 <br />6/11/2012 <br />6/8//2012 <br />6/11/2012 <br />6/8/2012 <br />6/8/2012 <br />6/11/2012 <br />6/8/2012 <br />6/8/2012 <br />6/8/2012 <br />6/8/2012 <br />6/8/2012 <br />6/8/2012 <br />Inspector <br />Chip Brown <br />Chip Brown <br />Chip Brown <br />Chip Brown <br />Chip Brown <br />Chip Brown <br />Chip Brown <br />Chip Brown <br />Chip Brown <br />Chip Brown <br />Chip Brown <br />Chip Brown <br />Chip Brown <br />Chip Brown <br />Chip Brown <br />Chip Brown <br />Chip Brown <br />Chip Brown <br />Rule 4.05.9 (15) <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 />No <br />No <br />No <br />No <br />No <br />No <br />Lal <br />Does pond exhibit <br />structural weakness, <br />erosion, or other <br />hazardous conditions? <br />IPJ <br />Monitoring Procedures <br />and Instrumentation <br />Quarterly/ <br />Annual <br />Inspections <br />Quarterly/ <br />Annual <br />Inspections <br />Quarterly/ <br />Annual <br />Inspections <br />Quarterly/ <br />Annual <br />Inspections <br />Quarterly/ <br />Annual <br />Inspections <br />Quarterly/ <br />Annual <br />Inspections <br />Quarterly/ <br />Annual <br />Inspections <br />Quarterly/ <br />Annual <br />Inspections <br />Quarterly/ <br />Annual <br />Inspections <br />Quarterly/ <br />Annual <br />Inspections <br />Quarterly/ <br />Annual <br />Inspections <br />Quarterly/ <br />Annual <br />Inspections <br />Quarterly/ <br />Annual <br />Inspections <br />Quarterly/ <br />Annual <br />Inspections <br />Quarterly/ <br />Annual <br />Inspections <br />Quarterly/ <br />Annual <br />Inspections <br />Quarterly/ <br />Annual <br />Inspections <br />Quarterly/ <br />Annual <br />Inspections <br />Li <br />Elevation & As - built <br />Depth Water Level <br />6583.0 ft. <br />7149.5 ft <br />6385.1 ft <br />6608.0 ft. <br />6324 9 ft. <br />6347 ft <br />6743.2 ft <br />DRY <br />7743 2 ft <br />6944.0 ft <br />7468.0 ft <br />DRY <br />7198 5 ft ft <br />6545 7 ft <br />7212.7 ft. <br />DRY <br />DRY <br />7238.5 ft. <br />Idi <br />Existing Storage <br />Capacity <br />1.43 ac - ft. <br />8 15 ac - ft. <br />0.48 ac - ft. <br />4.83 ac - ft <br />0 40 ac - ft. <br />0.73 ac - ft. <br />2.36 ac - ft. <br />3.98 ac - ft <br />0.75 ac - ft <br />1.99 ac - ft. <br />1.37 ac - ft <br />1.05 ac - ft <br />6 18 ac - ft. <br />4.56 ac - ft. <br />0.79 ac - ft. <br />1.40 ac - ft. <br />1.70ac - ft. <br />0 67 ac - ft. <br />(e) <br />None <br />Partial <br />Cleaning <br />Complete <br />during 4th <br />Quarter, 1600 <br />cu yd <br />Partial <br />Cleaning <br />Complete <br />during 3rd <br />Quarter, 3240 <br />cu yd <br />None <br />None <br />Survey <br />Complete <br />during 2nd <br />Quarter 2012 <br />None, <br />Cleanout <br />scheduled <br />Q32012 <br />Survey <br />Complete <br />during 2nd <br />Quarter 2012 <br />None <br />Partial <br />Cleaning <br />Complete <br />during 3rd <br />Quarter, 2088 <br />cu yd <br />None, <br />Cleanout <br />scheduled <br />Q32012 <br />None <br />None <br />None <br />None <br />None <br />None <br />None <br />Maintenance Items <br />CF 21 1 2 2011 <br />Colowyo Coal Company <br />573 State Highway 13 <br />Meeker, CO 81641 <br />T 970 - 824 -1573 <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 are scheduled for field survey updates in 2012 <br />Outfall Inspection - Ponds <br />Outfall Point <br />2nd Quarter 2012 <br />Year <br />d :.1;T C t'flE �:o <br />V <br />:- 32257 S <br />G <br />i %NAL % <br />P.E. No. 32257 <br />