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2014-02-05_REPORT - C1994082
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2014-02-05_REPORT - C1994082
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Last modified
3/29/2017 12:50:52 PM
Creation date
2/5/2014 12:56:10 PM
Metadata
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Template:
DRMS Permit Index
Permit No
C1994082
IBM Index Class Name
Report
Doc Date
2/5/2014
From
Katryna Snowden
To
DRMS
Annual Report Year
2013
Permit Index Doc Type
Hydrology Report
Email Name
JHB
DIH
Media Type
D
Archive
No
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values are collected affects these averages. TDS values are increasing. <br />However, the peak value occurred in 2011. <br />- Site YSS2. This site exists on Sage Creek below all potential Yoast <br />Mine discharges. Monitoring at this site was resumed in 1998 after the <br />monitoring requirement was discontinued in 1993 (although field <br />parameters were occasionally collected in 1994 to 1997) . A statistical <br />summary of baseline chemistry data is provided in Appendix D1 of the <br />2010 AHR. Its TDS plot indicates a slightly increasing trend, with the <br />peak value occurring in September 2006. <br />Grassy Creek / Annand Draw <br />- NPDESI0. This sediment pond on Annand Draw was completed in August <br />1996. Flow was observed at this site for the first time ever on February <br />24, 1997. Flow at this pond is normally continuous; however, no flow was <br />noted in October and January of this year. Average flow this year was <br />0.0499 cfs, which is 70g less than its historic (1997 -2012) average, <br />0.1668 cfs. The timing of when flow values are collected affects these <br />averages. This pond was dredged out in 2002. Baseline data for this <br />site, both downstream (Site YSA4) and upstream (Site YSAF4) of the pond, <br />have been provided in Appendix D1 of the 2010 ARR. NPDESI0 exhibits a <br />slightly increasing TDS trend. However the peak value occurred in 2002. <br />- NPDESII. This pond exists on a Grassy Creek tributary and was <br />completed in October 1997. Flow was first observed at this site in 1998. <br />No discharge occurred in 1999 or 2000. This year, flow started in late <br />April and ended in July. Average flow this year was 0.0296 cfs, which <br />was 10% greater than the historic (1998 -2012) average, 0.0269 cfs. The <br />timing of when flow values are collected affects these averages. Due to <br />high sediment level, this pond was dredged out in the fall of 2003. TDS <br />values exhibited an increasing trend, with the peak value occurring in <br />2011. <br />- Site YSGF5. This site exists on Grassy Creek below the NPDESII pond. <br />A statistical summary of baseline chemistry data is provided in Appendix <br />9 <br />
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