REP16823

• Permit No: C1981018
• IBM Index Class Name: Report
• Doc Date: 10/14/1993
• Doc Name: REVIEW OF 1991 & 1992 ANNUAL HYDROLOGY REPORTS C-81-018
• From: DMG
• To: WESTERN FUELS - UTAH - INC
• Permit Index Doc Type: HYDROLOGY REPORT
• Media Type: D
• Archive: No

C
Mr. Murari P. Shrestha - 2 - October 14, 1993
2. TDS levels must also be predicted into a future scenario
using the past and current levels to make a reasonable
assumption. This information needs to be incorporated into
the revised PHC.
3. The current conductivity levels of 11,000 umhos/cm or more
coming from NPDES 024A must be explained and included into
the PHC and AHR.
4. The current biomonitoring program with the CDOH regarding
elevated TDS levels of mine inflow waters must be included in
the revised PHC, mentioned in the AHR's and followed closely
in the future. The discussion of the biomonitoring program
should include what has been done in the past, what is being
done currently, and what specifically are the agreements
between CDOH and Western Fuels - Utah regarding WET test
results.
5. Increasing levels of both chloride and magnesium are
occurring in Qal-5, and need to be included and explained in
both the PHC and future AHRS.
6. To determine if material damage may exist on the White River
AVF, the operator needs to submit an impact statement
regarding the saline discharge from NPDES 024A. This
determination and explanation must then be inserted into the
revised PHC. To assist in making this determination, the
Division suggests that the operator acquire baseflow and
water quality information from the BLM on White River TDS
levels and graph the data from 1985 (date the Kenny Reservoir
was filled) to present.
B. THAT THE MINE GIVE FIRST PRIORITY TO LOCATING THE SOURCE AND REASON
FOR EXTREME SALINITY LEVELS IN THE MINE INFLOW.
The Division recommends that the operator conduct a mine
inflow study to determine volumes and TDS levels of ground
water entering the mine. Locations of samples and
significant inflows need to be mapped.
2. The Division requests that a graph of TDS levels be provided
for Qal-5 and NPDES 024 A in succeeding AHR's.
3. The Division requests that a graph of mine inflow quantity be
provided in future AHR's.
4. The Division recommends resumption of full suite ground water
quality monitoring triannually (spring, summer, and fall) on
the following wells:
35-4U, 36-2U, and 35-4M, 36-2C.
5. The Division recommends that additional ground water
monitoring wells be drilled downdip and northward from wells
35-4 and 36-2 into Section 25 to predict future TDS levels of