2018-01-24_HYDROLOGY - C2009087 (3)

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PERIODIC INSPECTION FORM: Water, Sediment, or Slurry Impoundments INSPECTOR'S NAME: Micheal Berdine DATE: 8/21/17 NPDES I.D. NO.: CO -0048275 D.P. 002 FACILITY CONFIGURATION: Incised Pond DATE LAST INSPECTION: 05/01/17 SITE NAME: Wadge Impoundment #002 LOCATION: NWX NE%, Sec. 2, TSN, R87W MINE NAME: Peabody Sage Creek Mine LOCATION: 7.1 mi. SE of Hayden, CO MINE I.D. NO.: CMLRD Permit No. C-2009-087 OWNER'S REP.: Miranda Kawcak CIRCLE OR WRITE IN APPROPRIATE RESPONSE: YES' NO N/A 1 Foundation preparation (removal of vegetation, stumps, topsoil: x 2 Lift thickness: x 3 Compaction according to approved plan: x 4 Burning (specify extent and location): x 5 Angle of slope: upstream, downstream Total = N/A 6 *Seepage (specify location, color, and approximate volume) From underdrain pipes x At isolated points on embonckement slopes x At natural hillside: x Over widespread areas: x From downstream foundation area: x "Boils" beneath stream or ponded water: x 7 Cracks or scarps on crest: x S Cracks or scarps on slope: x 9 Sloughing or bulging on slope: x 10 *Major erosion problems: x 11 Surface movements in valley bottom or on hillside: x 12 *Erosion of toe: x 13 *Water impounded against toe: x 14 Existing embankment freeboard = NA 15 Increase Decrease in water level. NO CHANGE 16 Cracks, bulging, or erosion on upstream face: x 17 Visible sumps or sinkholes in slurry surface: x 18 *Clogging Spillway channels and pipes: x system: x Diversion ditches: x or crushing of pipes ETrasDecant Spillway pipes: x Decant system: x hs clear and in place: x rate (gpm) = —20 gpm *Major adverse changes in these items could cause instability and should be reported to the Engineering Manager and Mine Superintendent for further evaluation. Adverse conditions noted in these items should normally be described (extextent, location, volume, etc.) here: None