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2015-03-31_REPORT - C1982057
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2015-03-31_REPORT - C1982057
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Last modified
3/29/2017 10:16:09 AM
Creation date
4/1/2015 8:56:38 AM
Metadata
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Template:
DRMS Permit Index
Permit No
C1982057
IBM Index Class Name
Report
Doc Date
3/31/2015
From
Seneca Coal Company, LLC
To
DRMS
Annual Report Year
2014
Permit Index Doc Type
Hydrology Report
Email Name
JHB
MPB
Media Type
D
Archive
No
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Hubberson Gulch) have their waters used for irrigation. Following is a <br />list of standards exceeded this year. <br />Parameter # of Sites / # of Excurs <br />Manganese (CDPHE irrigation) 5/6 <br />This summary indicates that only one of the CDPHE surface water <br />agricultural use standards was exceeded. The manganese standard was <br />exceeded at five sites. However, as indicated in the recently revised <br />CDPHE Regulation 31, the standard of 0.2 mg /l, applies to plants grown <br />in acidic ( <6.0 pH) soils. In alkaline soils, as are found in the Seneca <br />II -W region, a more appropriate (EPA) standard would be 10 mg /1. The <br />maximum manganese value for any surface water site observed this year <br />was 0.62 mg /1 at site WSHF1. Pre - mining manganese values often exceeded <br />the 0.2 mg /1 standard. <br />Table 12 shows the CDPHE receiving stream standards for Dry Creek (Yampa <br />Segment 13d) and Sage Creek (Yampa Segment 13e). Sage Creek was <br />resegmented by the CDPHE in 2003. Regulation 33 was further revised in <br />December 2005 and August 2008. These standards were based on the <br />presence of fish in the lower portions of the creeks. However, the upper <br />portions that Seneca II -W discharges into have no fish present. All <br />chemical standards for 13d and 13e are currently the same. Table 13 <br />provides a comparison of those standards to water quality data collected <br />this year from NPDES and stream sites in those basins. Standards that <br />were exceeded are: <br />Iron, Total Recoverable (TR) <br />Mercury <br />Sulfide <br />of Sites J # of Excursions <br />5/S <br />6/11 <br />5/5 <br />One of the five iron exceedances was from NPDES site 016. All of the <br />exceedances occurred during snowmelt runoff. They were likely due to <br />high suspended solids (TSS) values normally observed during snowmelt <br />runoff. <br />21 <br />
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