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REP08478
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Entry Properties
Last modified
8/24/2016 11:38:21 PM
Creation date
11/26/2007 11:54:14 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981022
IBM Index Class Name
REPORT
Doc Date
2/28/2007
Doc Name
2006 Annual Hydrology Report
From
Oxbow Mining, LLC
To
DRMs
Annual Report Year
2006
Permit Index Doc Type
Hydrology Report
Media Type
D
Archive
No
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. Water Level (Elevation Ft.l <br />Date D2B D2B2 <br />Jan 14, 2005 6044.0 - <br />Janu 19, 2005 6044.0 - <br />Febru 22,2005 6044.6 - <br />March 31, 2005 6043.6 - <br />May 3, 2005 6044.0 - <br />June 15, 2005 6044.5 - <br />Jul 11, 2005 6043.6 - <br />Au ust 24, 2005 6044.6 - <br />October, 17, 2005 6045.0 - <br />April 19, 2006 - 6053 <br />Ma 25, 2006 6047 - <br />June 7, 2006 - 6066.7 <br />Jul 26, 2006 6047 6070.7 <br />October 17, 2006 6045 - <br />December 27, 2006 6047 6070.7 <br />After a review of the data, we believe that the transfer of water from D seam to the B seam has <br />had little effect on the B seam water level. See also the discussion regazding the H-10 well where <br />that monitor well has remained dry. <br />• Exhibit 2 -Groundwater Information also contains the results of transferred water samples <br />obtained on June 13, 2006. The data suggests no anomalies. <br />SC-1 Well -Rollins Sandstone <br />Monitor well SC-1 is located just east of the reclaimed Sanbom Creek mine portal area. <br />Well SC-1 was completed in the Rollins Sandstone, which is located 40 to 50 feet below the B- <br />Seam. Monitoring data were historically collected from well SC-1 prior to any substantial <br />mining in the B-Seam of the Sanborn Creek Mine. The SC-1 well is located up-gradient relative <br />to the Rollins Sandstone unit which is located stratigraphically under the footprint of the mining <br />activities. <br />Water in the Rollins Sandstone is confined to limited localized zones that are fractured and/or <br />contained above the Rollins, as evidenced by water level measurements that aze well above the <br />top of the sandstone member. Water quality is poor, with high total dissolved solids as sodium <br />chloride. Inflow and recovery of the water level in the drill holes indicates very low <br />permeability and porosity of the sandstone. There has been some vaziability in the water levels <br />measured in well SC-1 but there has been no apparent trend or indication of impact. No <br />significant difference in the 2006 monitoring results from baseline or historical measurements <br />was noted in well SC-1. <br />• <br />14 <br />
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