2015-04-29_REPORT - C1981038

• Permit No: C1981038
• IBM Index Class Name: Report
• Doc Date: 4/29/2015
• Doc Name: 2011 Annual Hydrology , Mine Inflow and Susidence Review Letter
• From: DRMS
• To: Bowie Resources, LLC
• Annual Report Year: 2011
• Permit Index Doc Type: Hydrology Report
• Email Name: JDM
• Email Name: DIH
• Media Type: D
• Archive: No

Name of Addressee
Page 4
Date
following sites: SM -11 (one half), SM -10 (one half), SM -06
(one half), SM -05 (one half), and MW -01 (one quarter).
It is noted that based on the 2011 AHR, the lab mistakenly
left Acidity off the parameters list for this site.
Based on the information presented in the 2011 AHR the
13. Prevention of
disturbance to the hydrologic balance within and adjacent to
material damage to the
CDRMS regulation
the permit area caused by mining and reclamation at the
hydrologic balance
4.05.1(1)
Bowie No. 1 Mine is the minimum that can be expected from
outside the permit area
an underground mining operation at this location. Use of
best management practices indicates minimization of
disturbance to the hydrologic balance.
Discussion of the PHC begins on page 125 of Section
2.05.6(3)(b)(iv) of permit C- 1981 -038 and is divided into four
sections; effects to surface water from mine facilities, effects
to groundwater from mine facilities, effects to groundwater
within the permit and adjacent areas, and effects to surface
water within the permit and adjacent areas.
14. Agreement of
Surface water— Monitoring data reported for springs and
observed hydrologic
CDRMS regulation
ponds was somewhat consistent with baseline data and the
impacts with "probable
2.05.6(3) and
predicted impacts identified in the PHC section on page 125
hydrologic
requirement to keep
of Volume 1 of C- 1981 -038.
consequences" (PHC)
current CDR
projected in mining
regulation 2.03.3(1)
The water quality reported for a majority of surface water
sites fell within the baseline ranges. Higher than average
parameters were identified both at sites affected by mining
and those not affected by mining. See Table 2 below.
Ground water — No material damage has occurred, as
discussed in item 21, above.
15. Adequacy of
CDRMS regulation
The current ground water monitoring program continues to
ground water
4.05.13(1)
adequately address the protection of the hydrologic balance.
monitoring program
16. Adequacy of
CDRMS regulation
The current surface water monitoring program continues to
surface water
4.05.13(2)
adequately address the protection of the hydrologic balance.