2013-08-06_REPORT - C1996083 ‎(2)‎

• Permit No: C1996083
• IBM Index Class Name: Report
• Doc Date: 8/6/2013
• Doc Name: 2012 Annual Reports Adequacy Review
• From: DRMS
• To: Bowie Resources, LLC
• Permit Index Doc Type: Subsidence Report
• Email Name: SLB
• Email Name: SB1
• Media Type: D
• Archive: No

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Bowie No. 2 Mine, based on existing groundwater quality and use, and a prediction in the Probable
Hydrologic Consequences section of the permit application package that mining will not likely have a
negative effect on groundwater quality.
7. Springs, Ponds, and Ponds with Springs: Monitoring data for springs and ponds was consistent with
baseline data and the predicted impacts presented in the PHC section of the permit application
package. Flow and water levels were lower than average at most of the sites. Conductivity was at
an all time high at SP34 -11, S -4a, 5 -16, 53 -1, and 534 -7, and higher than background monitoring data
at most sites. The increased conductivity at low flows was consistent with historic trends.
8. Surface water flows at all monitoring points were consistent with precipitation recorded for 2012
and with historical data.
9. Surface water quality: Reported quality at most surface water sites is within the baseline ranges,
with a few exceptions. Several parameters were much higher than average (see table below) on the
North Fork of the Gunnison and Hubbard Creek, but the increase was also evident in the upstream
flow, which would suggest that the increased levels are not primarily influenced by mining impacts.
Similar results were observed and reported in baseline data for Terror Ditch, Stevens Draw, and
upper Terror Creek (Cottonwood Stomp area) none of which have been affected by mining to date.
Parameters Reported Higher than Average
Location
Date
Parameter
Value
Upstream Elevated
B- Gulch -lo
6/20/2012
TSS
162,160 mg /L
NA
HUB -low
10/19/2012
Chloride
203.6 mg /L
Y
SAR
2.62
Y
6/12/2012
Hardness
315.52 mg /L
Y
TDS
445 mg /L
Y
Arsenic
.06 mg /L
Magnesium
34.6 mg /L
NFG -low
10/19/2012
Chloride
288.3 mg /L
N
Conductivity
754 umhos /cm
Y
Hardness
270.4 mg /L
Y
TDS
692 mg /L
Y
SAR
2.42
Y
Sulfate
82.5 mg /L
N
Calcium
82.4 mg /L
Y
Magnesium
15.7 mg /L
Y
Sodium
91.5 mg /L
Y
06/11/2012
Bicarbonate
138.67 mg /L
N
Nitrate - Nitrite
0.38 mg /L
N
Arsenic
0.05 mg /L
N
10. No NPDES effluent limits were exceeded in 2012.
11. Overall, the report was well organized and thorough. We have identified a few areas where the
report could be improved:
a. Data is presented in tabular form for all monitoring points, and in graphic form for several of the
monitoring points. In future reports it would be helpful if the data were presented graphically