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2009-02-26_REPORT - C1992081
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2009-02-26_REPORT - C1992081
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Last modified
8/24/2016 3:43:55 PM
Creation date
2/26/2009 3:33:08 PM
Metadata
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Template:
DRMS Permit Index
Permit No
C1992081
IBM Index Class Name
REPORT
Doc Date
2/26/2009
Doc Name
2008 Annual Hydrology Report
From
Hayden Gulch Terminal, Inc
To
DRMS
Annual Report Year
2008
Permit Index Doc Type
Hydrology Report
Email Name
JHB
Media Type
D
Archive
No
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• <br />• <br />Surface Water <br />There are two NPDES sites at the Loadout, 001 and 002 (aka, NPDESIH and <br />NPDES2H). NPDESIH and NPDES2H both flowed for four weeks only this year, <br />as a result of snowmelt in April and May. NPDES water quality reports <br />for this year are presented in Appendix B. Data provided includes a <br />water quality report for this year, remarks, a flow hydrograph for all <br />data since 1993, and a regression plot of historic total dissolved <br />solids (TDS) data. No NPDES effluent limits were exceeded this year. <br />A new NPDES permit went into effect on July 10, 2008. The certification <br />page for that permit is included here in Figure 2 (Appendix A). The <br />major changes in this new permit are: 1) monitoring frequencies for most <br />parameters is now twice a month (was weekly in the previous permit), 2) <br />monitoring of total iron and total manganese was dropped and 3) <br />monitoring of total recoverable iron was added. <br />Surface water quality reports for this year are presented in Appendix B. <br />Data provided includes a water quality report for this year, remarks, a <br />flow hydrograph for all data since 1993, and a regression plot of <br />historic total dissolved solids (TDS) data. <br />Table 3 provides a comparison of this year's surface water quality to <br />CDPHE receiving stream standards for Dry Creek (Yampa Segment 13d, <br />Regulation No. 33, January 2009). This Paradox database generated table <br />does not include the units of concentration (mg/1 or ug/1) for each <br />parameter. The units used for each parameter are the same as those <br />listed on the Surface Water Parameter List (Table 1) and are also the <br />same as those used in the water quality reports. The frequency column on <br />Table 3 indicates the number of exceedances out of the total number of <br />samples (i.e., 1/2 indicates one exceedance out of two samples). Below <br />is a summary of standards that were exceeded. <br />For upstream Site HGSD1, the only standard exceeded was selenium <br />(chronic standard 4.6 ug/1). On June 16, a selenium value of 5.9 ug/1 <br />was observed. <br />2
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