2009-02-26_REPORT - C1994082 (11)

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Springs - Spoil Spring 1 (YSSPGI). This spoil spring was discovered in September 2002. It is located just above the old haul road culvert crossing Annand Draw. Its TDS plot displays an increasing trend. - Spoil Spring 2 (YSSPG2). This spoil spring was discovered in May 2005 below Stock Pond 011A (i.e., above NPDES Pond 011). It is normally dry in the fall. Only four samples have been collected so far. - Spoil Spring 3 (YSSPG3). This spoil spring was discovered in September 2005 above NPDES Pond 012. Only five samples have been collected so far. - Spoil Spring 4 (YSSPG4). This spoil spring was discovered in June 2006, in the main channel that feeds NPDES Pond 012. It is located to the north of Spoil Spring 3. Only four samples have been collected so far. Comparison of Surface Water Quality to Water Use Standards. SCC has compiled a list of surface water standards for agricultural uses (Table 9). This list is composed of CDPHE surface water agricultural use standards (CDPHE, Reg.31, May 2008). Table 10 provides a comparison of surface water quality to agricultural standards. This Paradox database generated table does not include the units of concentration (mg/l or ug/1) for each parameter. The units used for each parameter are the same as those listed on the standards table (Table 9) and are also the same as those used in the water quality reports. The frequency column on Table 10 indicates the number of exceedences out of the total number of samples (i.e., 1/2 indicates one exceedence out of two samples). Below is a summary of standards that were exceeded. Given in parenthesis is the source and use of each standard. Although the CDPHE does not indicate between livestock and irrigation uses in their surface water agricultural standards, they have done so in their similar ground water agricultural standards (see Table 11