2014-01-29_REPORT - C2010089

• Permit No: C2010089
• IBM Index Class Name: Report
• Doc Date: 1/29/2014
• Doc Name: Review of 2012 Annual Hydrology Report ‎(AHR)‎
• From: DRMS
• To: Western Fuels - Colorado, LLC
• Annual Report Year: 2012
• Permit Index Doc Type: Hydrology Report
• Email Name: RDZ
• Email Name: DIH
• Media Type: D
• Archive: No

Page 3
Require-
ment
Requirement
Regulation
complied
Comment
with ? (yes
/ no)
overburden and underburden zones is marginally usable for
livestock watering; the water in the coal formation is too poor
for even this use.
Compliance points are under review.
S. Restoration of
At the time of submittal of the 2012 AHR, little or no
ground water
CDRMS
excavation had been conducted at NI-IN Mine.
recharge to
regulation
NA
approximate
4.05.11(3)
premining rate
T. Prevention of
The PHC predicts no significant impacts, and monitoring
adverse impacts
CDRMS
data is in agreement with this prediction.
to ground water
regulation
yes
systems outside
4.05.11
the permit area
U. Prevention of
Impacts have not exceeded impacts predicted in the PHC.
impacts to
CDRMS
ground water that
regulations
adversely impact
4.05.1(2) and
yes
the postmining
4.05.11
land use within
the permit area
V. Minimization of
disturbance to the
CDRMS
hydrologic
regulation
yes
balance within
4.05.1(1)
and adjacent to
the permit area
W. Prevention of
material damage
CDRMS
to the hydrologic
regulation
yes
balance outside
4.05.1(1)
the permit area
X. Agreement of
CDRMS
Impacts have not exceeded impacts predicted in the PHC.
observed
regulation
hydrologic
2.05.6(2) and
impacts with
requirement
"probable
to keep
information
yes
hydrologic
current,
consequences"
CDRMS
(PHC) projected
regulation
in mining permit
2.03.3(1)
Y. Adequacy of
CDRMS
WFC needs to limit H values and B values in data. H
ground water
regulation
indicates that holding times were exceeded. B indicates that
monitoring
4.05.13(1)
yes
values are below PQL; improved lab methods should be
program
considered.
Page 3