REP07162

• Permit No: C1981033
• IBM Index Class Name: Report
• Doc Date: 5/20/1996
• Doc Name: 1995 ANNUAL HYDROLOGY REPORT BEAR MINE PN C-81-033
• From: DMG
• To: BEAR COAL CO
• Annual Report Year: 1995
• Permit Index Doc Type: HYDROLOGY REPORT
• Media Type: D
• Archive: No

III IIIIIIIIIIIII III
999
STATE OF COLORADO
DIVISION OF MINERALS AND GEOLOGY
Depanment of Natural Resources
1113 Sherman A_ Rrxtm 215 ~+~~~~
Dcnver. Colorado 80:07 I
I'hnnc:I3U 31 tl66-7567
EAX: 0031 832 8106
DEPARTMENT OF
NATURAL
May 20, 1996 RESOURCES
Roy Romer
Mr. Basil Bear ~~"rp`
Bear Coal Com an lame=s Eo~nnead
P Y ExtrW rve Director
P . O . BOX 518 Michael B. Long
Somerset, CO 81434 orvisinn Director
RE: 1995 Annual Hydrology Report; Bear Mine; Permit No. C-81-033
Dear Mr. Bear:
The Division has reviewed the 1995 Annual Hydrology Report (AHR)
for the Bear Mine. The frequency of data collection is in
compliance with the approved monitoring plan contained in your
permit, with the following exception. Temperature data were not
provided for the upper french drain.
No significant anomalies in water quality data were observed based
on a review of the 1995 report and previous AHRs. The 1995 data
show higher conductivity and salinity levels in the downgradient
groundwater monitoring well (AA1) as opposed to AA3. water
quantity data presented in the report will require some
clarification as described below.
Per Stipulation No. 32 monitoring requirements contained on page
2.04-30b of the permit, an annual report of inflows, discharges and
consumption of water within the mine needs to be provided. Records
of water discharged from, consumed in, and imported to the mine
shall be maintained and submitted with the AHR.
A 1995 Water Consumption Report is provided in your report along
with text describing that "the consumption of water in the mine
equals the amount of water imported to the mine plus the amount of
mine inflow water consumed". Data used to support this need to be
presented more clearly. The source of imported water is not stated
in the report and it is unclear whether the tabulated data shown in
the 1995 Water Consumption Report accounts for all of the imported
water. It is assumed that the amount imported is equal to the
amount consumed provided that there is zero discharge. This should
be clarified in the AHR. No mention of discharge is provided.
The Division acknowledges the fact that in June of 1995, the Bear
~3 Mine began to notice a measurable amount of mine inflow water in
the 3rd West Section. The mine inflow water (16.7 acre-feet)
combined with 11.26 acre-feet of imported water results in 28.99