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INSPEC44602
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Last modified
8/24/2016 9:47:46 PM
Creation date
11/18/2007 11:37:39 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981010
IBM Index Class Name
Inspection
Doc Date
7/15/1997
Doc Name
SPECIAL FOCUS SURFACE WATER HYDROLOGY TRAPPER MINE PN C-81-010 TRAPPER MINING INC
From
DMG
To
OSM
Media Type
D
Archive
No
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readings that can not be related to historical data or to a trend in the data, and which will need <br />more sampling results until conclusions can be drawn. Examples are manganese in well GE-1, <br />lead in well J-1, sulfate in wells GMP-1, J-1 and P-8 and TDS in wells GF-7, GC-1, GP-7, GC-2 <br />and GC-3. Fourth, there are high readings that appear to be related to a recent or long term trend <br />in the data. Manganese in well GF-11, sulfate in wells GC-3 and GE-1 and TDS in well P-8 are <br />examples. It will remain to be seen whether these trends are reversed as mining ceases in those <br />local azeas. <br />There were also cases where data may be showing a declining trend, such as TDS in spoil well <br />GC-11 and sulfate in spoil wells GD-3 and GF-7. <br />There has been a varied natural rechazge rate in the last few years at the mine site. Precipitation <br />in 1994 was well below the average while, for 1995, it was well above the average. 1996 showed <br />an above average year for precipitation, but below that of the previous yeaz. Varying rechazge <br />rates were reflected in varying water level changes in the wells, with some wells showing a lag <br />between the time of precipitation and the water elevation change. In those wells where mining <br />moved away from the well location, water levels rose. <br />The 1996 Annual Report has a more complete listing of springs and seeps, and the water <br />monitoring results obtained from them, than did previous annual reports. This was due to a <br />request stemming from the 1996 OSM Special Focus Inspection. For 1996, only two springs <br />were flowing greater than 5 gpm, East Pyeatt and Johnson. The TDS and specific conductance <br />for the Johnson spring are very high, although similar to the readings at the neazby spoil well <br />GF-7.The annual report states that the TDS in well GF-7 appears to be leveling off or declining, <br />and that the Johnson spring may follow suit. Concerning the updated spring information, <br />provided on page 4-248a in Section 8 of the 1996 Annual Report, the Division has two <br />comments. <br />13. On proposed revised page 4-248a, in the proposed Table of Contents for Appendix Q and <br />in the proposed cover page for Section XXIX of Appendix Q, all found in Section 8 of <br />the 1996 Annual Report, reference is made to Appendix Q, Section XXIX. However, this <br />section contains the stock pond information that was a result of Technical Revision No. <br />73. Please rectify this conflict. <br />14. The information provided in the permit application and in the spring and seep proposed <br />revised pages does not seem to directly address whether the Coyote spring and the West <br />Buzzard spring existed prior to mining. It is important to document the premine status of <br />these springs to order to allow a proper impact analysis relative to these springs. Please <br />provide any available data for these springs.. <br />4 <br />
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