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2014-05-01_REPORT - C1992081
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2014-05-01_REPORT - C1992081
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Last modified
3/29/2017 12:51:31 PM
Creation date
5/1/2014 9:45:37 AM
Metadata
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Template:
DRMS Permit Index
Permit No
C1992081
IBM Index Class Name
Report
Doc Date
5/1/2014
From
Jason Musick
To
Janet Binns
Annual Report Year
2013
Permit Index Doc Type
Hydrology Report
Email Name
JDM
JHB
DIH
Media Type
D
Archive
No
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Page 2 of 4 <br />during the 2013 water year. Based on the information <br />provided, the potentially dissolved form is applicable to <br />NPDES sites and the dissolved form is applicable to <br />stream sites with the total recoverable form conducted <br />as a quality control check. The chronic selenium <br />standard (4.6 ug /1) was exceeded in April (7.1 ug /1), <br />August (8.2 ug /1), and October (5.6 ug /1) at Site HGSD1 <br />The acute standard (18.4 ug /1) was not exceeded during <br />the water year. Neither NPDES site was discharging at <br />the time of the exceedance. <br />10. Interim Narrative <br />CWQCC regulation 41.6 <br />It was determined that groundwater points of <br />Standard for Ground <br />compliance are unwarranted at the Hayden Gulch <br />Water <br />Loadout. It was determined that any Ieachate <br />originating at the Loadout would likely be of better <br />quality than native groundwater in the Lewis Shale <br />which has high concentrations of dissolved solids. <br />11. Sampling frequency <br />Tab 13, p. 8 of CDRMS mining <br />The report indicates that all frequencies were met. <br />at surface water <br />permit C -92 -081 <br />12. Parameters to be <br />Table 13 -1 of CDRMS mining <br />All required parameters were analyzed. <br />sampled at surface <br />permit C -92 -081 <br />water sites <br />13. Filing frequency of <br />CDRMS regulation 4.05.9(17) <br />Sediment ponds associated with C- 1992 -081 include <br />pond reports <br />Ponds 001A (Truck Loop Pond) and 002A (Rail Loop <br />Pond). Quarterly pond inspections were conducted <br />within the appropriate quarter. <br />14. Timely filing of <br />CDRMS regulation 4.05.9(17) <br />Quarterly pond inspection reports were submitted and <br />pond reports <br />received by the Division within an appropriate <br />timeframe. <br />15. Content of pond <br />CDRMS regulation 4.05.9(15) <br />All required information was addressed on quarterly <br />reports <br />sediment pond inspection in water year 2013. <br />16. Sampling frequency <br />Tab 13, p. 10 of CDRMS mining <br />Dry Creek alluvial water is monitored in two wells: <br />of ground water <br />permit C -92 -081 <br />HGDAL3 (down - gradient) and HGDAL4 (up- gradient). <br />monitoring wells <br />Monitored semi - annually <br />17. Parameters to be <br />Table 13 -2 of CDRMS mining <br />All required parameters were analyzed. <br />analyzed in ground <br />permit C -92 -081 <br />water samples <br />18. Basic Standards for <br />CWQCC regulations 41.4 and <br />The Loadout did not generate significant amount of <br />Ground Water <br />41.5 <br />Ieachates in 2013. Well HGDAL3 is downgradient of the <br />Loadout and well HGDAL4 is the upgradient well from <br />the Loadout. The manganese standard (0.2 mg /1) was <br />exceeded at both wells in May and September. <br />Although 0.2 mg /I is the standard used to protect crops <br />grown in soils with a pH value lower than 6.0, the <br />
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