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Colowyo Coat Company <br />5731 State Highway i3 <br />Meeker, CO 81641 <br />T: 970.8241573 <br />Outtall Inspection - Ponds <br />1st Quarter 2012 <br />Year <br />I am a Licensed Professional Engineer in the State of Colorado and a representative of Environmental Solutions, Inc., P. 0. 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 />CF21.1.2 2011 <br />�� 11011 i <br />J c. P <br />S <br />a if <br />5 <br />OO1A <br />002A <br />_ 003A <br />004A <br />005A <br />OOBA <br />007A <br />008A <br />009A <br />010A <br />011A <br />012A <br />Other <br />Other <br />Other <br />Other <br />Other <br />Other <br />Streeter <br />Sediment Pond <br />Work Ares <br />Pond <br />Gosserd <br />Loadout Pond <br />butch A <br />Pond <br />Stoker Siding <br />Pond <br />Nail Loop <br />Pond <br />Prospect <br />Pond <br />West Pit <br />Pond <br />Section 18 <br />Pond <br />East Taylor <br />Pond <br />West Taylor <br />Pond <br />Sec. 28 <br />Pond <br />Wash Say <br />Pond <br />Taylor Pump <br />Holding Pond <br />Aeration <br />Pond <br />West Overflow <br />Pond <br />East Overflow <br />Pond <br />Weehbsy <br />Sediment Sump <br />Inspection Date: <br />3119/2012 <br />3/19/2012 <br />3/19/2012 <br />3/19/2012 <br />3/t9/20t2 <br />3/19/2012 <br />3/19/ 2012 <br />3/19/2012 <br />3/26/2012 <br />3/19/2012 <br />3/18/20t2 <br />3/19/2012 <br />3123/2012 <br />3123/2012 <br />3/23/2012 <br />3/23/20t2 <br />3/23/2012 <br />3/23/20t2 <br />Inspector: <br />Chip Brown <br />Chip Brown <br />Chi Brown <br />Chip Brown <br />Chip Brown <br />Chlp Brown <br />Chip Brown <br />Chip Brown <br />Chip Brown <br />Chip Brown <br />Chip Brown <br />Chip Brown <br />(flip Brown <br />Chip Bmwn <br />Chip Brown <br />Chip Brown <br />Chip Brown <br />Chip Brown <br />put. 4.08.9 (1 5 l <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 />Lo.1 <br />Does pond exhibit <br />structural weakness, <br />erosion, or other <br />hazardous conditions? <br />LD1 <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 />1_9_2 <br />Elevation 8 As -built <br />Depth Water bevel <br />6583.0 ft. <br />7152.0 ft <br />6387.1 ft. <br />6815.5 ft. <br />6325.0 ft. <br />6349.0 ft. <br />8744.0 0. <br />6825.4 ft. <br />7745.8 ft. <br />6944.0 ft. <br />7469.5 ft <br />7056.6 ft <br />7204.5 ft ft. <br />6545.7 ft. <br />72132 ft. <br />7200.0 ft <br />7199.5 ft <br />7238.5 ft. <br />Existing Storage <br />Capacity <br />1.42 ac-ft. <br />8.15 ac -ft. <br />2.50 ac-ft. <br />4.80 ac-ft. <br />0.40 ac-ft. <br />0.9 ac -ft. <br />2.33 ac -ft. <br />3.21 ac -ft. <br />0.75 ac-ft. <br />3.29 ac -ft. <br />1.36 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 />LL 1 <br />None <br />Partial <br />Cleaning <br />Complete <br />during 4th <br />Quarter, 1600 <br />cuyd <br />Partial <br />Cleaning <br />Complete <br />during 3rd <br />Quarter, 3240 <br />cuyd <br />None <br />None <br />Partial <br />Cleaning <br />Complete <br />during 4th <br />Quarter, 160 <br />cuyd <br />None <br />None <br />None <br />Partial <br />Cleaning <br />Complete <br />during 3rd <br />Quarter, 2088 <br />cuyd <br />None <br />None <br />None <br />None <br />None <br />None <br />None <br />None <br />Maintenance Items <br />Colowyo Coat Company <br />5731 State Highway i3 <br />Meeker, CO 81641 <br />T: 970.8241573 <br />Outtall Inspection - Ponds <br />1st Quarter 2012 <br />Year <br />I am a Licensed Professional Engineer in the State of Colorado and a representative of Environmental Solutions, Inc., P. 0. 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 />CF21.1.2 2011 <br />�� 11011 i <br />J c. P <br />S <br />a if <br />5 <br />