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2014-02-28_REPORT - C1981022
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2014-02-28_REPORT - C1981022
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Last modified
8/24/2016 5:40:25 PM
Creation date
2/28/2014 12:41:16 PM
Metadata
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Template:
DRMS Permit Index
Permit No
C1981022
IBM Index Class Name
Report
Doc Date
2/28/2014
Doc Name
2011 AHR Response to December 5, 2013
From
Oxbow Mining, LLC
To
DRMS
Annual Report Year
2011
Permit Index Doc Type
Hydrology Report
Email Name
BFB
SB1
Media Type
D
Archive
No
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Item 4. The April 19, 2011 surface water flow on Sanborn Creek happened to hit on a "warm" <br />day undergoing considerable snow melt. The event was an anomaly driven by spring weather conditions <br />and not mining related. The 2013 AHR indicates a return to "normal" flow. <br />Item 5a. The Division's perception about certain surface water parameters consists of one data <br />point. It is certainly premature to draw any conclusions, especially when the data is from sampling of a <br />high spring runoff event. The 2013 AHR includes additional data for review and potential analysis. <br />Item 5b. The Division questions the level of HCO3 (bicarbonate) in a number of surface sites. It <br />is certainly premature to draw any conclusions, especially when the limited data is from sampling of a <br />high spring runoff event. The 2013 AHR includes additional data for review and potential analysis. <br />Item 6. The field meters are indeed calibrated before taking them to the field. Thank you for the <br />recommendation that the meters be calibrated. <br />Item7. To satisfy Rule 4.05.13(c) each section of the AHR provides an analysis of the data. For <br />Example, regarding surface water site E -2, page 8 of the AHR concludes with a statement "An analysis <br />of the limited data suggests there is no adverse impact of the Elk Creek mine to Lower Elk <br />Creek. " <br />This concludes the response to the Division's December 5, 2013, 2011 AHR, Adequacy Review. <br />• Page 3 <br />
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