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r~ <br />PERIODIC INSPECTION FORM <br />Water, Sediment, or Slurry Impoundments <br />INSPECTOR'S NAME: Michael Altavilla DATE: 03/11/96 <br />NPDES I.D. NO.: COG-850008-002A <br />FACILITY CONFIGURATION: Embankment Pond DATE LAST INSPECTION: 12/04/95 <br />SITE NAME: Rail Looo Pond 2 LOCATION: SEA SWy, Sec. 14. T6N. R88W <br />MINE NAME: H-G Terminal. Inc. LOCATION: 2 mi. SE of Hayden. CO <br />MINE I.D. NO.: CMLRD Permit No. C-92-081 OWNER'S REP.: Brad Brown. Gen Mar <br />C' le or write o iete e e <br />1. Burning (specify extent and location): Yes No <br />2. Angle of slope: 3.75:1 upstream, 2:1 downstream Total = 5.75:1 N/A <br />3. *Seepage (specify location, color, and approximate volume) <br /> From underdrain pipes: Yes ~j <br /> At isolated points on embankment slopes: Yes N/A <br /> At natural hillside: Yes N/A <br /> Over widespread areas: Yes N/A <br /> From downstream foundation area: Yes N/A <br /> "Boils" beneath stream or ponded water: Yes N/A <br />9. Cracks or scarps on crest: Yes N/A <br />5. Cracks or scarps on slope: Yes N/A <br />6. Sloughing or bulging on slope: Yes o N/A <br />7. *Major erosion problems: Yes N/A <br />8. Surface movements in valley bottom or on hillside: Yes o N/A <br />9. *Erosion of toe: Yes N/A <br />10. *Water impounded against toe: Yes o N/A <br />11. Existing embankment freeboard: See comments 0.6 feet <br />12. _~ Increase Decrease in water level: Aooroximately 4.4 feet <br />13. Cracks, bulging, or erosion on upstream face: Yes N~ <br />14. Visible sumps or sinkholes in slurry surface: Yes No / <br />15. *Clogging <br /> Spillway channels and pipes: Yes o N/ <br /> Decant system: Yes o A <br /> Diversion ditches: Yes ~° A <br />16. *Crackinq or crushing of pipes <br /> Spillway pipes: Yes No ('~~ <br /> Decant system: Yes No <br />17. Trash racks clear and in place: Yes No 'N/A <br />*Major adverse changes in these items could cause instability and should be reported to the <br />Engineering Manager and Mine Superintendent for further evaluation. Adverse conditions noted <br />in these items should normally be described (extent, location, volume, etc.) in the space on <br />the back of this sheet. <br />