Laserfiche WebLink
3.2 Secondary Drinking Water Standards <br />Secondary drinking water parameters tested for include (iron, sulfate, total dissolved solids, pH, and chloride). Out of these <br />five parameters, iron, sulfate, chloride, and total dissolved solids exceeded Colorado's Secondary Drinking Water Standards <br />(SDWS) at least one time during the sampling period. <br />3.2.1 Iron <br />During the November and December 2005 sampling events dissolved iron was determined and during the October 2005, <br />April, July, and October, 2006 sampling events total iron was determined. Dissolved iron was determined from December <br />2006 through October 2008. No spatial or temporal trends are apparent in the iron concentrations besides the relatively <br />higher April 2006 concentrations. Even though active mining was taking place in some areas of the site, the dissolved iron <br />concentrations have decreased from the dissolved iron concentration in the November and December 2005 samples. There <br />appears to be no direct influence on the dissolved iron concentrations from mining activities. <br />Generally, the dissolved iron concentrations are higher in the summer and fall sampling periods. <br />Iron <br /> Wells (CRMW) Site/Group <br /> <br /> 01 02 04 05 06 07 09 16 40 41 42 A VG <br />Oct-05 10.33 24.56 32.08 1.721 7.427 4.566 ---- ---- 0.871 7.379 ---- 11.12 <br />Nov-05 0.66 0.79 0.66 0.87 0.63 0.57 0.85 0.72 0.51 0.65 0.70 0.69 <br />Dec-05 0.72 0.68 0.68 ---- 0.63 0.63 ---- ---- 0.51 0.74 ---- 0.66 <br />Apr-06 65 76 420 ---- 58 110 ---- ---- 280 43 ---- 150.29 <br />Jul-06 28 55 13 ---- 33 75 ---- ---- 48 19 ---- 38.71 <br />Oct-06 32 23 16 69 37 73 5.5 55.0 130 8.2 8.9 41.60 <br />Dec-06 0.022 0.012 0.013 ---- ---- ---- 0.009 3.197 ---- ---- ---- 0.65 <br />Apr-07 0.028 0.052 0.042 ---- 0.068 ---- 0.068 0.047 ---- 0.030 ---- 0.05 <br />Jul-07 0.211 0.204 0.006 ---- 0.010 ---- 0.026 0.208 ---- 0.222 0.016 0.11 <br />Oct-07 0.305 0.041 0.224 0.194 0.470 ---- 0.061 0.040 0.048 0.266 0.281 0.19 <br />Jan-08 U 0.014 U --- U --- 0.015 0.009 --- 0.018 --- 0.01 <br />Apr-08 0.050 --- 0.028 --- 0.125 --- 0.048 0.030 --- 0.027 --- 0.05 <br />Jul-08 0.202 --- 0.121 --- 0.180 --- 0.171 0.167 --- 0.160 --- 0.17 <br />Oct-08 0.154 ---- 0.171 0.104 0.112 ---- 0.156 0.145 0.133 0.163 0.109 0.14 <br />Average 0.24 0.26 0.19 0.39 0.25 0.60 0.16 0.17 0.30 0.25 0.28 0.24 <br />Stnd <br />Dev. 0.26 0.34 0.26 0.42 0.26 0.04 0.27 0.23 0.24 0.27 0.30 0.27 <br />2007 <br />Baseline 0.63 0.64 0.63 ---- 0.66 ---- 0.63 0.63 ---- 0.68 ---- 0.63 <br />The average dissolved iron concentration level for the entire site has decreased 0.09 mg/L to 0.24 mg/L from the 2007 to <br />2008. The standard deviation is 0.27 mg/L. <br />Annual 2008 Sampling Report - Lupton Lakes -8- December 2008