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2007-03-16_REPORT - C1981010 (9)
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2007-03-16_REPORT - C1981010 (9)
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Last modified
8/24/2016 3:16:36 PM
Creation date
9/26/2012 12:31:50 PM
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Template:
DRMS Permit Index
Permit No
C1981010
IBM Index Class Name
REPORT
Doc Date
3/16/2007
Doc Name
2006 AHR Section 3.0 Ground Water Quality
Annual Report Year
2006
Permit Index Doc Type
Hydrology Report
Media Type
D
Archive
No
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2006. The 2006 sulfate concentration for Johnson Gulch well J -1 was similar to recent higher <br />values and slightly higher than the natural level in the Flume Gulch alluvium at well COY but <br />could be due to the previous dry cycle. Sulfate concentrations in the Flume Gulch wells (GC -3 and <br />COY) have fluctuated from approximately 400 to 1100 mg/1. <br />3.3 pH <br />Field pH is an important parameter to monitor because some coal spoils have the potential <br />to increase acidity of the ground water, which increases the mobility of most heavy metals. A pH of <br />less than 5 would generally be needed to greatly increase the mobility of most heavy metals. <br />Available pH data is tabulated in Table B -1 of Appendix B. The field pH of water from the <br />GC wells has generally been slightly above 7.0 and has been at similar values since the initiation of <br />disturbance in this area. <br />Field pH from well GD -2 slightly decreased in 2005 and slightly increased in 2006 to above <br />neutral. The upgradient mining in the QR seams has not significantly affected the pH in this area of <br />the aquifer. The pH values from backfill well GD -3 are 6.3 and 6.8 for 2006, which is near the <br />values in the native aquifer at well GD -2. The QR aquifer at GE -1 was above neutral for 2006. The <br />pH of water from well GE -2 in 2005 was similar to values observed during previous years for this <br />well. The pH value for well GE -3 was near 9 in 2006. <br />Similar pH values were observed for the HI aquifer at well GF-4 in 2006 to those observed <br />in previous years Backfill well GF -5 had field pH values above 7.0 in 2006, while the field pH for <br />backfill well GF -7 was near neutral. The field pH values in backfill well GF -11 for 2006 were <br />Trapper Mining Company 3 - 8 <br />2006 Annual Report <br />
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