HYDRO23834

• Permit No: C1981041
• IBM Index Class Name: Hydrology
• Doc Date: 10/19/1999
• Doc Name: QUARTERLY POND INSPECTION REPORT
• Permit Index Doc Type: SEDIMENT POND INSPECTIONS
• Media Type: D
• Archive: No

POWDERHORN COAL COMPANY
C-81-041
OPERATIONAL STATUS AT TIME OF INSPECTION
DESIGN AND ACTUAL DEPTH
FROM SPILLWAY INVERT
DESIGN DEPTH
DESIGN MAX. WATER DEPTH
APPROXIMATE WATER LEVEL
DESIGN MAX. SED. DEPTH
SEDIMENT LEVEL
OUTFLOW (cfs
FEATURES
RILLS B. GULLIES ON EIAB
INADEQUATE VEGETATION
OUTLET CHANNEL EROSION
BURROWS
OTHER
DIFFERENTIAL SETTLING
CRACKS OR SLIDES
SEEPAGE
OTHER
DEFECTIVE SPILLWAYS
DEWATERING DEVICE CLOGGED
FAULTY GATES, BAFFLES
OTHER
ADDITIONAL COMMENTS
MAINTENANCE REQUIRED
POND INSPECTION REPORT
June 28,1999
ALL DEPTHS MEASURED FROM EMER~CaENCY SPILLWAY INVERT SAE SAE
POND 1- 2 POND 4 POND 5 POND 8 POND 7 POND 8 POND 9 POND 10 POND 11 POND 12 N Decl. N DeG.
UTL N YARD N SHOP CRDA 1 N DECL PLANT RSRDA CRDA - 2 CBA -2 Mine Dis. E. SUmc W. Sumo
0.8 1.05 8.00 2.7 12.00 9.00 9.00 6.8 5.00 n/a n/a
Na n/a n/a n/a n/a 6.6 n/a n/a n/a n/a n/a Na
Puddles DRY DRY DRY DRY 5.9 DRY DRY DRY Disch. DRY DRY
0.8 1.00 2.80 2.4 2.3 6.6 4.7 3.t3 4.4 n/a n/a n/a
8.8/4.2/4. 3.3/2.8/2 5.80 5.5/7.4/5. 4.7 >7.0 8.80 8.816.5 7.4/7.8 - - -

NO NO NO NO NO NO NO NO NO NO NO NO
NO NO NO NO NO NO 1 NO NO 2 NO NO
NO NO NO NO NO. NO NO NO NO NO NO NO
NO NO NO 3 NO NO NO NO NO NO NO NO
NO NO NO NO NO NO NO NO NO NO NO NO
NO_ NO NO NO NO NO NO NO NO NO NO NO
_ NO NO NO NO NO NO NO NO NO NO NO NO

_NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO _
NO
NO NO NO NO NO NO NO NO NO NO NO NO
_NO_ _ _NO NO NO NO NO NO NO NO NO NO NO
NO _ NO NO NO NO NO NO NO NO NO NO NO
_NO_ _NO NO NO NO NO NO NO NO NO NO NO
NO NO NO NO NO NO NO NO NO NO NO NO
Note 1 - While top sprayed -looks dead - revegetation from last year very sparse may need to n;seed.
Note 2 - Revegetation from last year very sparse may need to reseed.
Note 3 - Animal burrow on far west inlet needs to be filled.
Note 4 - INSPECTOR ~i