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REP41515
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REP41515
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Entry Properties
Last modified
8/25/2016 12:43:21 AM
Creation date
11/27/2007 9:02:57 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981010
IBM Index Class Name
Report
Doc Date
3/16/2006
Doc Name
2005 Annual Hydrology Report Cover Letter to Section 2.8
From
Trapper Mining Inc.
To
DMG
Annual Report Year
2005
Permit Index Doc Type
Hydrology Report
Media Type
D
Archive
No
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Wells GP-5 and GP-6 are useful in defining natural variations in the QR aquifer for 2005. <br />Water levels in wells GP-5 and GP-6 show a rising trend from 1995 through 1998 with an overall <br />gradual rise from 1998 to 2002. Water levels in these two wells have been fairly steady the last four <br />years with a small increase in the level in well GPI in 2005. Well GP-8 has been used as a baseline <br />for precipitation/recharge impacts on the KLM aquifer and showed a significant decline in water <br />levels during 2001 through 2005. Mining is close enough to this well that its water level responses <br />cannot be used relative to baseline conditions for the last five years. <br />Figure A-1 presents water levels versus time for wells GF-5 and P-5. The wells are <br />completed in the HI bacicfill and 2nd White Sandstone aquifers, respectively. Water levels in well <br />GF-5 were steady in 2005, while well P-5 stayed dry in 2005. Water level in HI well GP-7 (Figure A- <br />9) shows a small decline in the HI aquifer for 2005, which is probably natural. This well has to be <br />used with caution as an indicator of natural changes due to the closeness of mining. <br />The GC wells (GGI, GC-2, GC-3, see Figure A-2) aze located near the northeast corner • <br />of the permit area (PA) slightly more than 1100 feet from mining activity in 2005. These wells are <br />completed in the HI, 3rd White and alluvial aquifers, respectively. The water-level changes in these <br />wells may not still be good indicators of natural recharge impacts on these aquifers due to the <br />upgradient mining. Water levels in well GC-1 were higher in 2002 through 2005 than they were in <br />2000 and 2001 but within natural variations. Overall rise in water level were observed in well GC-3 <br />in 2005 but within natural changes previouslyoobserved. Water levels in well GC-2 gradually <br />increased in 2005. These changes in these three wells are probably natural. The alluvial aquifer <br />response indicates good rechazge in 2005. <br />Figure A-3 presents the static water-level elevations for wells GD-2, GD-3 and GP-9. <br />These wells are completed in the QR, QR bacl~l] and 3rd White Sandstone aquifers. In 2005, water <br />Trapper Mining Company 2-4 <br />2005 Annuat Report <br />
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