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ANNUAL IMPOUNDMENT INSPECTION FORM <br />Mine: New Horizon 2 Mine <br />Pond Name: Pond 007 <br />NPDES Permit & Outfall #s: CO- 0000213 <br />Date Inspected: 16- March -2015 <br />Location Description: One mile 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.: 5648.9 As Built Pond Bottom elev.: 5631.0 <br />Surveyed Pond Emergency Spillway elev.: 5646.8 As Built Pond Primary Spillway elev.: 5645.4 <br />As Built Pond Capacity (pond bottom to primary spillway) per As Built 36.0 ac -ft <br />Existing Pond Capacity (pond bottom to primary spillway): As Built Volume - SV = 35.95 ac -ft <br />Sediment Volume (SV) at Inspection: length ft X width ft X depth AutoCAD ft = .05 ac -ft <br />Surface Water elev. 5637.6 - As Built Pond Bottom elev. 5631.0 = Water Depth 6.6 feet r1l" Water Volume (WV) in Pond 7.71 ac -ft (using as built capacity table & surface water elevsubtracting sediment volume under water level) Pond Capacity Available below primary spillway 28.24 ac -ft [As Built Pond Capacity — WV Inflow volume from 10 -yr 24 -hr storm runoff event 27.85 ac -ft <br />Circle or Write appropriate Response <br />1. Seepage (specify location, color, and approx. volume) <br />Yes <br />® <br />N/A <br />2. Cracks or scarps on crest or slopes <br />Yes <br />N/A <br />3. Sloughing or bulging on slopes <br />Yes <br />ro <br />N/A <br />4. Major erosion problems <br />Yes <br />P6 <br />N/A <br />5. Surface movements in valley bottom or on hillside <br />Yes <br />pq <br />N/A <br />6. Water impounded against toe <br />Yes <br />to <br />N/A <br />7. Clogging <br />a) Spillway channels and pipes <br />Yes <br />1 <br />N/A <br />b) Decant system <br />Yes <br />N/A <br />c) Diversion Ditches <br />Yes <br />16 <br />N/A <br />8. Cracking or crushing of pipes <br />a) Spillway pipes <br />Yes <br />rLo <br />N/A <br />b) Decant system <br />Yes <br />rG <br />N/A <br />9. Trash racks clear and in place <br />Y-Olt <br />No <br />N/A <br />10. Monitoring instrumentation is in place and functioning <br />No <br />N/A <br />Comments: Pond embankment was mowed. Sediment accumulation was surveyed. <br />M: \ENG \NH2 \Env \Pond Exams & Insp \2015_03 Pond Examination.doc <br />