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REP19056
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REP19056
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Last modified
8/24/2016 11:47:49 PM
Creation date
11/27/2007 2:33:18 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1982056
IBM Index Class Name
Report
Doc Date
3/27/1996
Doc Name
1995 AHR (1 of 2)
Annual Report Year
1995
Permit Index Doc Type
HYDROLOGY REPORT
Media Type
D
Archive
No
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Mining related dewatering impacts are noted for the Fish Creek sandstone wells 91M001 and 91M004. Both <br />sites were undermined in 1995 and exhibit water level declines corresponding to mining activity. Two <br />springs in the same vicinity, SWl and SW2, exhibited disrupted flow patterns during the year as well. TCC <br />will continue to monitor these locations in 1996. <br />No unusual observations are noted with respect to Foidel Creek alluvium groundwater levels. We11001-S-5 <br />conductivity values continue to increase although the overall increases noted in 1995 are small. Elevated <br />TDS concentrations were again documented at Foidel Creek alluvium well 008-AV-2 though the noted <br />increases are also small. TCC will continue to carefully monitor these apparent trends. <br />No unusual observations are noted with respect to Fish Creek alluvium groundwater levels. Water levels <br />in well 006-AY-1 were noted to decline during 1995 following several years of steady increase. No other <br />notable water level observations are apparent based upon review of the 1994 data. No notable water quality <br />impacts are evident. <br />Monitoring was initiated at Trout Creek alluvial well 008-AT-1 during 1994. No unusual observations are <br />noted with respect to the Trout Creek alluvium groundwater levels. No unusual observations are noted with <br />water quality remaining comparable to alluvial wells upstream of the site. <br />• Recorded surface water flows for Foidel Creek, Fish Creek, and Trout Creek were relatively higher than <br />compared to recent years data. A extremely wet spring developed with nearly 4 inches of precipitation <br />occurring in May. Field conductivity values from 1195 at site 800 on Foidel Creek upstream of the Foidel <br />Creek Mine appear to have stabilized relative to recently documented increases. No other notable water <br />quality impacts are evident at any surface water sites monitored during 1995. <br />Recorded 1995 spoil spring discharges remain negligible and, therefore, did not constitute a significant <br />portion of discharge from the TCC mine area with the potential to impact off-site areas. Discharges from <br />sedimentation ponds predominately occurred in conformance with applicable NPDES permit limitations and <br />therefore did not constmte significant impacts to receiving waters. Mine water discharge sites 109 and 115 <br />produced less water than in years past. No unusual occurrences of inflow were noted as a result of the <br />Annual Mine Inflow study. <br />• <br />-12- <br />
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