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Colowyo Coal Company <br />5731 State Highway 13 <br />Meeker, CO 81641 <br />Outfall Inspection - Ponds <br />First Quarter 2014 <br />Year <br />I am a Licensed Professional Engineer in the State of Colorado. The information contained in this document was provided by Colowyo Coal L.P. <br />Being <br />sonamiliar with correct to Colowyo <br />the best of my knowledge and ehe information provided to me by Colowyo Personnel, the information contained herein is <br />re ``��� • _ �i���'' <br />Moment in time measurement of the elevation of the top of the captured pool of water within the pond. •• <br />Selected ponds (Prospect and East Taylor) underwent field survey updates in 2013. 47031 ? <br />Note: (d) Existing storage capacities were adjusted to reflect corrected design storage capacity. Existing storage capacities were adjusted �i� '•.•••••••.•• �� <br />based on field estimates of sediment inflow. Select ponds will be surveyed second quarter, 2014 <br />CF 21 12 2014 <br />OO1A <br />002A <br />008A <br />OW <br />ONA <br />006A,. , <br />007A <br />009A <br />010A <br />011A <br />6i2A ". <br />SbVOW <br />Wiork Anna <br />Ord <br />A . <br />Siding <br />Rao Loop <br />Pros"d <br />West Pit <br />Section 16 <br />East Taylor <br />Writ Taylor <br />Sec. 28 <br />Sediment Pond <br />Pond <br />Lmdout Pond <br />11064. '. <br />Pond <br />POW <br />Po" <br />Ob W <br />Pond <br />Pond <br />Paid <br />Pond <br />Inspection Date <br />3/19/2014 <br />3/19/2014 <br />3/19/2014 <br />3/19/2014 <br />3/19/2014 <br />3/19/2014 <br />3/19/2014 <br />3/19/2014 <br />3/19/2014 <br />3/19/2014 <br />3/19/2014 <br />3/19/2014 <br />Inspector: <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 />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 />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 />!) <br />*Elevation 8 As -built <br />6583.10 <br />7153.50 <br />6391.00 <br />Dry <br />6325.00 <br />6347.50 <br />6743.00 <br />6823.00 <br />7745.00 <br />6944.00 <br />7468.10 <br />Dry <br />Depth Water Level <br />( d ) <br />2.34 ac -ft. <br />Existing Storage <br />Pending survey <br />8.35 ac -ft. <br />2.025 ac -ft. <br />3.56 ac -ft. <br />0.30 ac -ft. <br />0.575 ac -ft. <br />2.24 ac -ft. <br />4.64 ac -ft. <br />1.05 ac -ft. <br />1.18 ac -ft. <br />0.36 ac -ft <br />2.34 ac -ft <br />Capacity <br />confirmation <br />(_e, <br />Design storage below <br />2.63 ac -ft. <br />12.33 ac -ft. <br />3.0 ac -ft. <br />3.82 ac -ft. <br />0.38 ac -ft. <br />1.0 ac -ft. <br />2.25 ac -ft. <br />5.5 ac -ft. <br />1.26 ac -ft. <br />2.85 ac -ft. <br />1.77 ac -ft. <br />2.46 ac -ft. <br />weep holes /primary <br />discharge (ac -ft.) <br />Dredging <br />Dredging <br />scheduled for <br />scheduled for <br />t f l <br />Survey <br />Survey <br />Survey <br />Survey <br />Survey <br />Survey <br />Survey <br />Survey <br />May 2014, <br />May 2014, <br />Maintenance Items <br />scheduled 2nd <br />scheduled 2nd <br />scheduled 2nd <br />None <br />scheduled 2nd <br />scheduled 2nd <br />scheduled 2nd <br />scheduled 2nd <br />scheduled 2nd <br />None <br />quarter 2014 <br />quarter 2014 <br />quarter 2014 <br />quarter 2014 <br />quarter 2014 <br />quarter 2014 <br />quarter 2014 <br />quarter 2014 <br />survey <br />scheduled post- <br />survey <br />scheduled post <br />dredging <br />dredging <br />I am a Licensed Professional Engineer in the State of Colorado. The information contained in this document was provided by Colowyo Coal L.P. <br />Being <br />sonamiliar with correct to Colowyo <br />the best of my knowledge and ehe information provided to me by Colowyo Personnel, the information contained herein is <br />re ``��� • _ �i���'' <br />Moment in time measurement of the elevation of the top of the captured pool of water within the pond. •• <br />Selected ponds (Prospect and East Taylor) underwent field survey updates in 2013. 47031 ? <br />Note: (d) Existing storage capacities were adjusted to reflect corrected design storage capacity. Existing storage capacities were adjusted �i� '•.•••••••.•• �� <br />based on field estimates of sediment inflow. Select ponds will be surveyed second quarter, 2014 <br />CF 21 12 2014 <br />