REP42749

• Permit No: C1982056
• IBM Index Class Name: Report
• Doc Date: 12/4/2006
• Doc Name: 2005 AHR Review
• From: DRMS
• To: Twentymile Coal Company
• Annual Report Year: 2005
• Permit Index Doc Type: Hydrology Report
• Media Type: D
• Archive: No

Requirement
Requirement Requirement complied Comment
citation with ? (yes /
no
F. Antidegradation

Rule for Surface CWCC regulations

Water 3.1.9(2) and 3.3.0. yes
The Wadge overburden and the Twentymile Sandstone are the two aquifers most likely to
G. Basic Standards be affected by mining. Ground water is monitored in the following wells that are at
(Interim CWQCC locations downgradient from cuttent workings: FBR-11B (Wadge), 97012TM and
Narrative
regulation 41.S.C.6 yes 97013TM (Twentymile sandstone), and 97012TC and 97013TC (Trout Creek sandstone).
Standard) for The level of water has been dropping in two Twentymile Sandstone monitoring wells,
Ground Water and two natural springs did not flow during 2005. The mine is in compliance with the
round water standards should oints of com liance be established.
H. Sampling Exhibit 14 of
frequency at

surface water CDMG minin
g
yes
All sampling frequencies were met.
monitoren sites permit C-82-056
I. Parameters to be

sampled at Exhibit l4 of
surface water CDMG mining yes
sites Permit C-82-056
J. Prevention of
impacts to
surface water Surface water features in the permit area are Foidel Creek and Fish Creek. The approved
that adversely CDMG regulation postmining land uses in the permit area are pastureland and rangeland. These uses can be
impact the 4.05.1(2) yes expected to need water for watering of wildlife and livestock. Mining and reclamation
postmining land operations at the Foidel Creek Mine have not impaired surface water for these uses.
use within the
ermit area
K. Sampling
frequency of Exhibit 14 of
ground water CDMG mining yes
monitoring permit C-82-056
wells
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