2010-10-19_REPORT - C1980006

• Permit No: C1980006
• IBM Index Class Name: REPORT
• Doc Date: 10/19/2010
• Doc Name: 2009 AHR Review Letter
• From: DRMS
• To: Energy Fuels Coal, Inc.
• Annual Report Year: 2009
• Permit Index Doc Type: Hydrology Report
• Email Name: RDZ
• Media Type: D
• Archive: No

Require-

Requirement Requirement
citation ment
complied
Comment
with ?
(yes / no)
The Probable Hydrologic Consequences section of the
permit application predicts no appreciable impacts to
ground water systems outside the permit area.
Bedrock ground water. There have been no significant
bedrock excavations or discharges of water into bedrock at
the loadout.
N. Prevention of
adverse impacts
CDRMS
Alluvial ground water. Alluvium within the area of
to ground water regulation yes influence of the mine is laterally discontinuous and of
systems outside 4.05.11 limited areal extent (less than 300 acres in aggregate). The
the permit area only water from the Marr Mine that could reach the
alluvium would be surface runoff. No mine impacts to
alluvial ground water have been found in more than 10
years of data from the downgradient alluvial monitoring
wells at the loadout (AP-1 and AP-2). As discussed above,
the 2009 data indicate slightly elevated concentrations of
Mn and K, but these do not appear to be problematic nor
caused by mining activities.
0. Prevention of
impacts to ground CDRMS The approved post-mining land use of most of the permit
water that regulations area is rangeland. As previously discussed, ground water in
adversely impact
.1(2) and
4
.05 yes at loadout has not been adversely impacted by mining and
the postminmg 4
05
11 reclamation operations at the Marr Mine.
land use within .
.
the permit area
P. Minimization of
disturbance to the CDRMS Changes to the hydrologic balance within and adjacent to the
hydrologic
es permit area have been kept to the minimum that can be
balance within 4.0511(1) y expected from a surface coal mining operation.
and adjacent to
the permit area
Q. Prevention of
material damage CDRMS As previously discussed
monitoring data indicate material
to the hydrologic regulation yes ,
damage has been prevented outside the permit area.
balance outside 4.05.1(1)
the permit area
R. Agreement of CDRMS
observed regulation The Probable Hydrologic Consequences section of the
hydrologic 2.05.6(2) and permit application predicts no appreciable impacts to the
impacts with requirement hydrologic balance. Monitoring data in the hydrology
"probable to keep es report confirms this prediction. Monitoring data indicate
hydrologic information y the site has caused no significant impacts to the quality or
„
consequences current, quantity of bedrock ground water, alluvial ground water, or
(PHC) projected CDRMS surface water.
in mining permit regulation
2.03.3(1)
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