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REP21873
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REP21873
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Entry Properties
Last modified
8/24/2016 11:55:00 PM
Creation date
11/27/2007 3:17:03 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1980007
IBM Index Class Name
Report
Doc Date
12/11/2001
Doc Name
1982 ANNUAL HYDROLOGY REPORT-MT GUNNISON 1 MINE-WATER YEAR 1982
Annual Report Year
1982
Permit Index Doc Type
HYDROLOGY REPORT
Media Type
D
Archive
No
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• Sanitary wastes were trucked to a treatment plant during Water <br />Year 1982. Thus no impacts occurred. The treatment system will <br />be operational in Water Year 1983 and discharges should result in <br />no change in the water quality characteristics of the North Fork. <br />Sedimentation ponds were constructed to collect and treat runoff <br />from disturbed areas. No intentional discharge occurred during <br />Water Year 1982. Three instances of inadvertent discharges <br />occurred during construction. The Colorado Department of Health <br />was immediatelly notified in all cases and corrective action <br />taken. The discharges were small and could be expected to have <br />no effect on the North Fork. Future discharges from the <br />sedimentation ponds should pose no problems for the continued use <br />of the North Fork as a fishery or as a supply for agricultural <br />• and municipal water. The numeric stream standards will be <br />maintained even under a "worst case" scenario of high discharge <br />and low river flow. Under normal conditions there would be no <br />measurable change in quality of the North Fork resulting from <br />sedimentation pond discharges. <br />West Elk plans to continue monitoring of streamflows and spring <br />flows in the Minnesota Creek basin. However, complete and <br />continuous flow monitoring is virtually impossible due to <br />problems with frozen monitoring equipment in the winter and <br />periodic high, instantaneous out-of-bank flows at other times. <br />Continued water quality monitoring is of little value since there <br />is no way future mining in the F-Seam can affect water quality <br />• <br />-6- <br />
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