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PERIODIC INSPECTION FORM: Water, Sediment, or Slurry Impoundments <br />INSPECTOR'S NAME: Dennis Jones <br />DATE: 6/4/15 <br />NPDES I.D. NO.: N/A <br />FACILITY CONFIGURATION: Final Pit Impoundment DATE LAST INSPECTION: 03/02/15 <br />SITE NAME: Pecoco Reservoir LOCATION: SW% NW%, Sec. 2, T5N, R87W <br />MINE NAME: Peabody Sage Creek Mine LOCATION: 7.1 mi. SE of Hayden, CO <br />MINE I.D. NO.: CMLRD Permit No. C-2009-087 OWNER'S REP.: Ed Brady <br />CIRCLE OR WRITE IN APPROPRIATE RESPONSE: YES NO N/A <br />1 <br />Foundation preparation (removal of vegetation, stumps, topsoil: X <br />2 <br />Lift thickness = None - Pit Impoundment <br />3 <br />Compaction according to approved plan: X <br />4 <br />Burning (specify extent and location): <br />X <br />5 <br />Angle of slope: 5:1 upstream, 2:1 downstream Total= 7:1 <br />6 <br />*Seepage (specify location, color, and approximate volume) <br />From underdrain pipes X <br />At isolated points on embonckement slopes X <br />At natural hillside: X <br />Over widespread areas: X <br />From downstream foundation area: X <br />"Boils" beneath stream or ponded water: X <br />7 <br />Cracks or scarps on crest: X <br />8 <br />lCracks or scarps on slope: X <br />9 <br />Sloughing or bulging on slope: X <br />10 <br />*Major erosion problems: X <br />11 <br />Surface movements in valley bottom or on hillside: X <br />12 <br />*Erosion of toe: X <br />13 <br />*Water impounded against toe: X <br />14 <br />Existing embankment freeboard (6.1' is normal) = 6.1' <br />15 <br />Increase Decrease in water level: NO CHANGE <br />16 <br />Cracks, bulging, or erosion on upstream face: <br />X <br />17 <br />Visible sumps or sinkholes in slurry surface: <br />X <br />18 <br />*Clogging <br />Spillway channels and pipes: X <br />Decant system: X <br />Diversion ditches: X <br />19 <br />*Cracking or crushing of pipes <br />Spillway pipes: X <br />Decant system: X <br />20 <br />Trash racks clear and in place: X <br />21 <br />Discharge rate (gpm) = 79 <br />*Major adverse changes in these items could cause instability and should be reported to the Engineering Manager <br />and Mine Superintendent for further evaluation. Adverse conditions noted in these items should normally be <br />described (extextent, location, volume, etc.) here: None <br />