REP06739

• Permit No: C1980001
• IBM Index Class Name: Report
• Doc Date: 6/11/2004
• Doc Name: 2003 AHR Review Letter
• From: DMG
• To: WWC Engineering
• Annual Report Year: 2003
• Permit Index Doc Type: Hydrology Report
• Media Type: D
• Archive: No

Require-

Requirement Requirement ment
complied
Comment
citation with ? (yes
Ino
L. Parameters
to be Exhibit 14 of
analyzed in CDMG
ground mining permit yes
water C-82-056
sam les
M. Restoration of The Edna Mine was developed along the outcrop belt that rims the Twentymile Park
ground water
recharge to CDMG
regulation
es
Syncline. Ground water is recharged in this outcrop belt. The mine has not diminished
approximate 4.05.1 1(3) y the infiltration of meteoric waters into the subsurface and therefore has not diminished the
amount of recharge.
reminin rate
N. Prevention of
adverse impacts
CDMG Compliance with the Basic Standards for Ground Water, as explained in item G, above,

to ground water
regulation
yes indicate the permittee is preventing adverse impacts to ground water quality outside the

systems outside
4.05.11 permit area. Monitoring data indicate the permittee is preventing impacts to water quantity
the ermit area outside the permit area.
O. Prevention of
impacts to
ground water that CDMG The Trout Creek Sandstone could possibly serve as a ground water supply for the

adversely impact regulations
es postmining rangeland use. The Trout Creek is a few hundred deeper than the mined coal

the postmining 4.05.1(2) and y sequence, and most likely is not in hydraulic commnication with the bottom of the pits.

land use within 4.05.1 1
the ermit area
P. Minimizatio
n of disturbance CDMG The disturbance to the hydrologic balance within and adjacent to the permit area caused by
to the hydrologic
regulation
es mining and reclamation at the Edna Mine is the minimum that can be expected from a
balance within
4.05.1(1) Y surface coal mining operation at this location. Use of best management practices
and adjacent to indicates minimization of disturbance to the hydrologic balance.
the ermit area
Q. Prevention
of material CDMG Although leachate discharges from the Edna Mine have occasionally elevated the
damage to the
hydrologic regulation yes dissolved solids in Trout Creek, it is likely the degradation has not been of sufficient

balance outside 4.05.1(1) duration to cause a 3% decrease in farm productivity.
the ermit area
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