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REP09328
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REP09328
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Entry Properties
Last modified
8/24/2016 11:38:59 PM
Creation date
11/27/2007 12:06:44 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1982056
IBM Index Class Name
Report
Doc Date
7/31/1995
Doc Name
1994 AHR Review Letter
From
DMG
To
Twentymile Coal Company
Annual Report Year
1994
Permit Index Doc Type
HYDROLOGY REPORT
Media Type
D
Archive
No
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<br />3. An increasing trend in EC is observed after review of the <br />data recorded at downstream Fish Creek site 1003, with <br />values now averaging near 950 umhos/cm. <br />4. Downstream Trout Creek well 008-AT-1 shows a consistent <br />EC value above 1200 umhos/cm for its limited monitoring <br />•period, with flows in the fall consistently around 6 cfs. <br />5. An odd shift occurred in the flow data recorded at site <br />69 on Trout Creek. What change in gauging or stream <br />conditions explains-this obvious shift? <br />Ponds. Springs. and Mine Inflows <br />Mine inflow data reveals inflows have reduced back to normal ranges <br />after 1993 dewatering activities. Some inflow from the Trout Creek <br />sandstone may be occurring. no significant changes or trends were <br />observed in the pond and spring data. <br />Please respond to the above comments or statements as appropriate. <br />As the field season is rapidly slipping away, it is important that <br />these issues are addressed promptly. Please submit responses <br />within 30 days of receipt of this letter. Thank you for your <br />continued cooperation. <br />Sinc,rely, <br />K A. Gorham <br />Environmental Protection Specialist <br />CC: David Berry, DMG <br />Dan Hernandez, DMG <br />
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