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REP42347
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REP42347
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Entry Properties
Last modified
8/25/2016 12:44:13 AM
Creation date
11/27/2007 9:34:15 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981022
IBM Index Class Name
Report
Doc Date
3/13/2006
Doc Name
2005 Annual Hydrology Report
From
Oxbow Mining LLC
To
DMG
Annual Report Year
2005
Permit Index Doc Type
Hydrology Report
Media Type
D
Archive
No
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3.0 Surface Water Information <br />The data collected from Oxbow Mining, LLC (OMLLC) surface water monitoring sites along <br />with the results of laboratory analyses are presented in Exhibit 1-Surface Water Information. <br />The following site discussions are presented from west to east through the OMLLC property. <br />H-1 -Lower Hubbard Creek <br />Surface water monitoring point H-1 is located on Hubbard Creek, where this perennial stream <br />flows through the western edge of the OMLLC permit area associated with the abandoned but <br />reclaimed Somerset Mine facility area and Blue ribbon Mine Facility. Until 1996, the most <br />recent surface activity in the area was the reclamation of the lower Hubbard Creek site. In 2005 <br />the Hubbard Fansite was permitted and constructed. The H-1 site is utilized as a down gradient <br />site to detect potential changes in stream quality or quantity as a result of mining activities. <br />Mining activities include both the OMLLC Hubbard Creek facilities and the Blue Ribbon Mine <br />facility. <br />Hubbard Creek point H-1 was monitored in accordance with the permit requirements. Hubbard <br />Creek is a stream that also serves as a trans-basin diversion from the Terror Creek reservoir <br />during the summer irrigation season. Hubbard Creek continues to exhibit summer flow volumes <br />in response to the management of upstream diversions. No significant difference in the 2005 <br />monitoring results from baseline or historical measurements was noted. <br />B-1. B-2 and $-3 - Beaz Creek <br />BB=1 -- Surface water monitoring point B-1 -Lower Bear Creek, an ephemeral drainage, is <br />monitored to verify that the Elk Creek mine does not have an adverse affect on the quality of <br />runoff in the drainage. During 2005 there was, again, only minimal to no flow at B-1 after the <br />conclusion of spring snowmelt. <br />No additional retreat mining of D seam occurred under the Beaz Creek drainage during 2005. <br />The status of the Bear Creek road is assessed as part of ongoing subsidence monitoring. No <br />adverse effects as a resuk of mining activities were observed to have occurred to the Bear Creek <br />road in 2005: <br />From a historical perspective it is important to remember that the Bear Creek drainage was also <br />undermined by extensive historic mine workings in the B and C seam of the Somerset Mine. <br />B-2 and B-3 -- In accordance with the Elk Creek Federal coal lease COC-61357 "Water <br />Replacement Plan" stipulation, surface water monitoring points B-2 and B-3 are monitored for <br />flow twice annually after tributary flow from side channels between the two points has ceased. <br />B-2 corresponds to a mid-Bear creek location roughly corresponding to the south limit of the Elk <br />Creek Federal Coal lease. B-3 corresponds to an upper Bear Creek location roughly <br />• corresponding to the north limit of the Elk Creek Federal Coal Lease. Generally, due to the <br />ephemeral nature of Beaz Creek and the propensity for flows to quickly cease by late June, flow <br />measurements are most often obtained in mid-June. <br />6 <br />
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