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ANNUAL IMPOUNDMENT INSPECTION FORM <br />Mine: New Horizon 2 Mine <br />Pond Name: Pond 008 <br />NPDES Permit & Outfall #s: CO- 0000213 <br />Date Inspected: 30- March -2015 <br />Location Description: 1.5 miles West of Nucla <br />Owner's Rep.: Rick Wolney, Mine Manager <br />Pond Type: Partly Incised <br />CDRM & S #: C- 1981 -008 <br />Date Last Examination: 25- October -2014 <br />Legal Location: Sec 6 of T46N R15W <br />Inspector's Name: Frank Ferris <br />Pond Capacity Data <br />Surveyed Pond Embankment elev.: 5658.7 As Built Pond Bottom elev.: 5644.0 <br />As Built Pond Emergency Spillway elev.: NA Surveyed Pond Primary Spillway elev.: 5655.0 <br />As Built Pond Capacity (pond bottom to primary spillway) per As Built 7.96 ac -ft <br />Existing Pond Capacity (pond bottom to primary spillway): As Built Volume - SV = 7.96 ac -ft <br />Sediment Volume (SV) at Inspection: length ft X width ft X depth ft = NA ac -ft <br />Surface Water elev. 5650.96 - As Built Pond Bottom elev. 5644.0 = Water Depth 6.96 feet <br />Water Volume (WV) in Pond 4.37 ac -ft (using as built capacity table & surface water elev <br />subtracting sediment volume under water level) <br />Pond Capacity Available below primary spillway 3.59 ac -ft [As Built Pond Capacity — WV - <br />Inflow volume from 10 -yr 24 -hr storm runoff event 3.56 ac -ft <br />Circle or Write appropriate Response <br />1. Seepage (specify location, color, and approx. volume) <br />2. Cracks or scarps on crest or slopes <br />3. Sloughing or bulging on slopes <br />4. Major erosion problems <br />5. Surface movements in valley bottom or on hillside <br />6. Water impounded against toe <br />7. Clogging <br />a) Spillway channels and pipes <br />b) Decant system <br />C) Diversion Ditches <br />8. Cracking or crushing of pipes <br />a) Spillway pipes <br />b) Decant system <br />9. Trash racks clear and in place <br />10. Monitoring instrumentation l e t ) ca., <br />Comments: No sediment accumulation was observed in the pond. <br />M: \ENG \NH2 \Env \Pond Exams & Insp \2015_03 Pond Examination.doc <br />Yes <br />Yes <br />Yes <br />Yes <br />Yes <br />Yes <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />S <br />Yes <br />@ <br />N/A <br />Yes <br />" V <br />N/A <br />Yes <br />0 <br />N/A <br />Yes <br />t <br />N/A <br />Yes <br />rid <br />N/A <br />Y® <br />No <br />N/A <br />Yes <br />No <br />N/A <br />S <br />