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PERIODIC INSPBCTION FORM <br />Stockponds or sumps <br />INSPECTOR'S NAME: Michael Altavilla <br />FACILITY CONFIGURATION: Stockpond <br />SITE NAME: T-13 <br />MINE NAME: Seneca 77 <br />MINE I.D. NO.: C-80-005 <br />DATE: 11/02/99 <br />DATE LAST INSPECTION: 09/22/99 <br />LOCATION: NW1~SElt Sec 12 TSN, R87W <br />LOCATION: 7.7 mi SE of HaTden~ CO <br />OWNER'S REP.: Brad Brown, C-en M9~ <br />1. Angle of elope: 3:1 upstream, 3:1 downstream Total = 6:1 N/A <br />2. *Seepage (specify location, color, and approximate volume) <br /> At isolated points on embankment elopes: Yee ~ N/A <br /> At natural hillside: Yee ~ N/A <br /> <br /> Over widespread areas: Yee ~ N/A <br /> From downstream foundation area: Yee ~ N/A <br /> "Boils" beneath stream or ponded water: Yee ~ N/A <br />3. Cracks or ecarpe on treat: Yee ~ N/A <br />4. Cracks or ecarpe on elope: Yee ~ N/A <br />5. Sloughing or bulging on elope: Yee ~ N/A <br />6. *Major erosion problems: Yee ~ N/A <br />7. Surface movements in valley bottom or on hillside: Yee ~ N/A <br />8. *Eroe ion of toe: Yes ~ N/A <br />9. *Water impounded against downstream toe: Yes ~ N/A <br />10. Existing embankment freeboard: Apnrcximately ~_ feet <br />11. Increase Decrease in water level: No chanQp feet <br />12. Cracks, bulging, or erosion on upstream face: Yes ~ N/A <br />13. Spillway erosion: Yes ~ N/A <br />14. *Clogging <br /> Spillway channels: Yee N/A <br /> Diversion ditches: Yes ~ <br />o N/A <br />*Major adverse changes in these items could cause instability and should be reported to <br />the Engineering Manager and Mine Superintendent for further evaluation. Adverse <br />conditicne noted in these items should normally be described (extent, location, volume, <br />etc.) in the apace on the back of this sheet. <br />