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2009-02-26_REPORT - C1982057 (10)
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2009-02-26_REPORT - C1982057 (10)
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Last modified
8/24/2016 3:43:54 PM
Creation date
2/26/2009 3:33:54 PM
Metadata
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Template:
DRMS Permit Index
Permit No
C1982057
IBM Index Class Name
REPORT
Doc Date
2/26/2009
Doc Name
2008 Annual Hydrology Report
From
Seneca Coal Company
To
DRMS
Annual Report Year
2008
Permit Index Doc Type
Hydrology Report
Email Name
DTM
Media Type
D
Archive
No
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2001 0.018 cfs <br />2000 0.024 cfs <br />1999 0.057 cfs <br />1998 0.110 cfs <br />1997 0.033 cfs <br />1996 0.015 cfs <br />1995 0.015 cfs <br />10 <br />(from monthly measurements as of 12/99) <br />(weekly measurements) <br />1994 no flow (very low snowpack runoff this year) <br />1993 0.114 cfs (pond was dewatered to repair a leaking <br />dewatering line) <br />This year's average flow value is 102% above the historic average flow <br />value, 0.041 cfs. This year, flow was observed only in April, May, June <br />and July. Review of this site's TDS plot indicates a stable trend. <br />Baseline data for this site (WSD8) has been provided in Appendix E1. <br />- Surface Water Site SW-S2W-SG5 (WSD5). This site is located on Dry <br />Creek and is the furthest downstream surface water site for this side of <br />Seneca II-W. Monitoring at this site began in March 1983. The TDS plot <br />indicates an increasing trend. However, the peak TDS value occurred in <br />September 2003. The Seneca II-W PHC, Table 17-42b, predicts and average <br />irrigation season (June-September) TDS value of 2451 mg/l at this site, <br />while a value of 1505 mg/l was observed this year. <br />Sage Creek <br />- NPDES 015 (NPDESI5). This site is located on the southern Sage Creek <br />tributary in the II-W South area. It is now monitored monthly, except <br />when inaccessible by truck. Pond 015 was completed in late August 1999 <br />and began to discharge in February 2000. Average flow for each water <br />year was: <br />2008 0.350 cfs (monthly measurements) <br />2007 0.044 cfs (weekly measurements) <br />2006 0.054 cfs " <br />2005 0.027 cfs " <br />2004 0.014 cfs " <br />2003 0.029 cfs " <br />• <br />• <br />• <br />16
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