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<br />PHRIODIC INSPECTION FORM <br />Water, Sediment, or Slurry Impoundments <br />INSPECTOR'S NAME: Dennis Jones DATE: 6'I~~'~S <br />NPDES I.D. NO.: CO-0000221 D.P. 004 ~7 <br />FACILITY CONFIGURATION: Cross-Valley Pond DATE LAST INSPECTION: 3~ /' O S <br />SITE NAME: South Section 12 Pond #004 LOCATION: SW~ SE',4, Sec. 12, TSN, R67W <br />MINE NAME: Seneca IZ Mine (Seneca Coal Co) LOCATION: 7.1 mi. SE of Hayden, CO <br />MINE I.D, NO.: CMLRD Permit No. C-80-005 OWNER'S REP.: Gregg Kitchen, Gen Mgr <br />Circle Or write in appropriate response <br />1 <br />2 <br />3 <br />4 <br />5 <br />6 <br />7. <br />8. <br />9. <br />10 <br />11 <br />12 <br />13 <br />14 <br />15 <br />16 <br />17 <br />18 <br />19 <br />20 <br />Foundation preparation (removal of vegetation, stumps, topsoil: Yes <br />Lift thickness: 12 <br />Compaction according to approved plan: Yes <br />Burning (specify extent and location): No <br />Angle of slope: 5:1 upstream, 2:1 downstream Total = <br />*Seepage (specify location, color, and approximate volume) <br />From underdrain pipes: <br />At isolated points on embankment slopes: <br />At natural hillside: <br />Over widespread areas: <br />From downstream foundation area: <br />"Boils" beneath stream or ponded water: <br />Cracks or scarps on crest: <br />Cracks or scarps on slope: <br />Sloughing or bulging on slope: <br />*Major erosion problems: <br />Surface movements in valley bottom or on hillside: <br />*Erosion of toe: <br />*Water impounded against toe: <br />Existing embankment freeboard: (normal = 4.9')1 <br />Increase Decrease in water level: hs cKUku O_ <br />Cracks, bulging, or erosion on upstream face: ~~ <br />Visible sumps or sinkholes in slurry surface: <br />*Clogging <br />Spillway channels and pipes: <br />Decant system: <br />Diversion ditches: <br />*Cracking or crushing of pipes <br />Spillway pipes: <br />Decant system: <br />Trash racks clear and in place: <br />7:1 <br />N/A <br />Yes No <br />Yes No <br />Yes No <br />Yes No <br />Yes No <br />Yes No <br />Yes No <br />Yes No <br />Yes No <br />Yes No <br />Yes No <br />Yes NO <br />~L~ _ feet <br />feet <br />Yes No <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />Yes No N/A <br />Yes No N/A <br />Yes No N/A <br />® No N/A <br />Yes ~ N/A <br />es 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 in <br />these items should normally be described (extent, location, volume, etc.) in the space on the <br />back of this sheet. <br />