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Surface Water <br />The Hayden Gulch Terminal NPDES permit number is COG850008. There are <br />two NPDES sites at the Loadout, 001 and 002 (aka NPDESIH and NPDES2H). <br />NPDES water quality reports for 2018 are presented in Appendix B. Data <br />provided include a water quality report for the 2018 water year, <br />remarks, a flow hydrograph for all historic data, and a regression plot <br />of historic total dissolved solids (TDS) data. No NPDES effluent limits <br />were exceeded this year. <br />Due to dry weather conditions, NPDESIH has no recorded discharge since <br />2011. This site displays a decreasing TDS trend, with the peak value <br />occurring in 1997. <br />Due to dry weather conditions, NPDES2H also has no recorded discharge <br />since 2011. This site displays an increasing TDS trend with the peak <br />value occurring in 2011. The March 2015 sample was collected from the <br />pond. <br />Surface water quality reports for 2018 are presented in Appendix B. Data <br />provided include a water quality report for the 2018 water year, <br />remarks, a flow hydrograph for all historic data, and a regression plot <br />of historic total dissolved solids (TDS) data. <br />Site HGSD1 is upstream of the Loadout. This site displays an increasing <br />TDS trend, with the TDS peak occurring in 2002. <br />Site HGSD3 is downstream of the Loadout. This site displays a slightly <br />increasing TDS trend, with the peak TDS occurring in 1995. <br />Table 4 provides a comparison of this year's surface water quality to <br />CDPHE receiving stream standards for lower Dry Creek (Yampa Segment 13h, <br />Regulation No. 33, January 2009). This table was generated from the <br />Paradox database and does not include the units of concentration (mg/1 <br />or ug/1) for each parameter. The units used for each parameter are the <br />same as those listed on the Surface Water Parameter List (Table 1) and <br />