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2010-05-06_REPORT - C1982056
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2010-05-06_REPORT - C1982056
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Last modified
8/24/2016 4:11:35 PM
Creation date
5/6/2010 2:12:08 PM
Metadata
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Template:
DRMS Permit Index
Permit No
C1982056
IBM Index Class Name
REPORT
Doc Date
5/6/2010
Doc Name
2009 AHR Review Letter
From
DRMS
To
Twentymile Coal Company
Annual Report Year
2009
Permit Index Doc Type
Hydrology Report
Email Name
JDM
Media Type
D
Archive
No
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water samples analyzed. <br /> Surface facilities and underground <br /> workings of the Foidel Creek Mine <br />19. Restoration of <br />lie downhill from the outcrop belt <br />ground recharge to CDRMS regulation that rims the Twentymile Park <br />approximate pre-mining 4.05.12(3) YES Syncline. Ground water is <br /> recharged in this outcrop belt. <br />rate The mine has not disturbed the <br /> rocks in this outcrop belt which <br /> does not diminish the amount of <br /> recharge. <br /> Compliance with the Basic <br /> Standards for ground water, as in <br /> item 10, indicates the permittee is <br /> preventing adverse impacts to <br /> ground water quality outside the <br /> permit area. Monitoring data <br /> indicate the permittee is <br /> preventing impacts to water <br /> quantity outside the permit area. <br /> Hydrology reports indicate that <br /> mining has dropped the <br /> potentiometric surface of the <br /> Wadge overburden by <br /> approximately 200 feet in <br /> undermined areas (well 93M001) <br />20 <br />. Prevention of but not in areas beyond mining or <br />adverse impacts to CDRMS regulation the permit area (well 008-7758.) <br />ground water systems 4.05.11(1) YES The Twentymile Sandstone water <br /> <br />outside permit area levels at well 006-BRDH-7 <br /> remained relatively constant with <br /> that of previous years, with no <br /> mining impacts apparent. Levels <br /> in well FBR-2 dropped 56 feet in <br /> 2003 and dropped another 84 feet <br /> in 2005 which can be contributed <br /> to the approaching 6 Right panel. <br /> In 2005 water levels began to <br /> recover and continue through <br /> 2009. Pumping for mine use of <br /> Trout Creek sandstone wells 001- <br /> 83-106 and 001-83-107 is likely <br /> the cause of a drop in the <br /> potentiometric surface of the <br /> Trout Creek sandstone at these <br /> wells. These drops are likely a <br /> local impact due to the proximity
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