HYDRO21887

• Permit No: C1981047
• IBM Index Class Name: Hydrology
• Doc Date: 8/7/1987
• Doc Name: SEMI-ANNUAL BENCH HYDROLOGIC MONITORING REPORT FN C-047-81
• From: BLUE RIBBON COAL CO
• To: MLRD
• Permit Index Doc Type: OTHER GROUND WATER
• Media Type: D
• Archive: No

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ribbon
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company
August 3, 1987
Susan J. Mowry
Colorado Mined Land Reclamation Division
1313 Sherman Street, Room 423
Denver, CO 80203-2273
Re: Semi-Annual Bench Hydrologic Monitoring Report,
File No. C-047-81
Dear Susan:
blue ribbon coal company
p.o. box 1352
palisade, Colorado 61526
[phone]
AUG 71987
RECLAA~pI,gT O~ DID/ISICN
The following is the results of hydrologic monitoring on the restabilized
mine bench for the first and second quarter of 1987:
North Subdrain:
Date 3/20 4/28 5/28
Flow (gpm) 0.06 0.02 0.02
pH 7.9 ---- 8.0
Conducting 1310 @8oC ---- 1660 @7°C
Date 7/ 1
Flow (gmp) Trickle
pH ----
Conductivity ----
Middle Subdrain:
Date 3/20 4/28 5/28
Flow (gpm) Trickle None None
Date 7/1
Flow (gpm) None
South Subdrain:
Date 3/20 4/28 5/28
Flow (gpm) 0.40 0.51 0./56
pH 4.2 4.7 7.3
Conductivity 3320 @8oC 3490 @9oC 3580 @8°C
Date
Flow (gpm)
pH
Conductivity
7/1
0.51
7.3
3920 @14°C