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2016 ANNUAL IMPOUNDMENT INSPECTION <br />Mine: New Horizon 2 Mine <br />Pond Name: Pond 008 <br />NPDES Permit & Outfall #s: CO -0000213 <br />Date Inspected: 2 -March -2016 <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: 16 -October -2015 <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. 5653.8- As Built Pond Bottom elev. 5644.0 = Water Depth 9.8 feet <br />Water Volume (WV) in Pond 6.8 ac -ft (using as built capacity table & surface water ele4,A! <br />bICE <br />subtracting sediment volume under water level) a10 <br />Pond Capacity Available below primary spillway 1.5 ac -ft [As Built Pond Capacity— WVInflow volume from 10 -yr 24 -hr storm runoff event 3.56 ac -ft 46342 <br />,09•• 1.1 'o°�v <br />Circle or Write appropriate Response / S/0NA%-��� <br />1. Seepage (specify location, color, and approx. volume) Yes V tlo N/A <br />2. Cracks or scarps on crest or slopes Yes (G N/A <br />3. Sloughing or bulging on slopes Yes f c� N/A <br />4. Major erosion problems Yes N/A <br />5. Surface movements in valley bottom or on hillside Yes N/A <br />6. Water impounded against toe Yes c? N/A <br />7. Clogging <br />a) Spillway channels and pipes Yes N/A <br />b) Decant system Yes N/A <br />C) Diversion Ditches Yes N/A <br />8. Cracking or crushing of pipes <br />a) Spillway pipes Yes N/A <br />b) Decant system Yes If� N/A <br />9. Trash racks clear and in place 155" No N/A <br />10. Monitoring instrumentation Yes No /A <br />Comments: No sediment accumulation was observed in the pond. <br />M:\ENG\NH2\Env\Pond Exams & Insp\2016_03 Annual Impoundment Inspections.doc <br />