Laserfiche WebLink
3.2.2 Sulfate <br />Sulfate concentrations exceeded SDWS in five of the eleven wells from the December 2006 through October 2008 sampling <br />events. The highest overall sulfate concentration is found upgradient of mining activities and along the eastern edge of the <br />mining site downgradient of a Halliburton facility. <br />Figure 3 and Figure 4 show sulfate concentrations from wells located downgradient and upgradient of the mining site, <br />respectively. All of the graphed wells show a decrease in sulfate concentrations except for CRMW09. <br />The sulfate concentration in CRMW01 exceeded the baseline level of 251 mg/L in October and December 2006. The sulfate <br />concentration in CRMW02 exceeded the baseline level of 253 mg/L in April and July 2007. The sulfate concentration in <br />CRMW04 exceeded the baseline level of 240 mg/L in April 2006. The sulfate concentration in CRMW06 exceeded the <br />baseline level of 238 mg/L in November 2005. The sulfate concentration in CRMW09 exceeded the baseline level of 257 <br />mg/L in January, April, and July 2008. The sulfate concentration in CRMW16 exceeded the baseline level of 252 mg/L in July <br />2007. All of these wells are either located upgradient of the mining activities or were located at a considerable distance from <br />mining activities at the time of the exceedances. Mining activities would likely not have been a cause of the higher <br />concentration levels. <br />Sulfate <br /> Wells (CRMW) Site/Group <br /> <br /> 01 02 04 05 06 07 09 16 40 41 42 A VG <br /> <br />Oct-05 194 204 193 151 220 190 ---- ---- 174 176 ---- 187.8 <br />Nov-05 216 238 223 265 240 209 135 249 192 216 227 219.1 <br />Dec-05 208 222 223 ---- 220 199 ---- ---- 186 213 ---- 210.1 <br />Apr-06 206 211 246 ---- 215 192 ---- ---- 171 213 ---- 207.7 <br />Jul-06 227 217 139 ---- 224 181 ---- ---- 149 215 ---- 193.1 <br />Oct-06 263 249 201 151 171 228 181 234 208 222 230 212.5 <br />Dec-06 272 248 214 ---- ---- ---- 201 244 ---- ---- ---- 235.9 <br />Apr-07 225 257 143 ---- 199 ---- 255 243 ---- 223 ---- 220.8 <br />Jul-07 221 255 95 ---- 190 ---- 232 253 ---- 213 196 206.9 <br />Oct-07 230 233 131 205 185 ---- 255 222 138 161 170 193.0 <br />Jan-08 212 238 159 ---- 203 ---- 265 202 ---- 220 ---- 214.0 <br />Apr-08 235 ---- 190 ---- 212 ---- 259 216 ---- 229 ---- 223.6 <br />Jul-08 207 ---- 83 ---- 174 ---- 272 192 ---- 197 ---- 187.4 <br />Oct-08 181 ---- 136 166 179 --- 243 197 159 224 168.7 183.7 <br />Average <br />Stnd 221.3 233.9 169.8 187.7 202.4 199.8 229.7 225.2 172.2 209.4 198.2 206.01 <br />Dev. 4 18.2 50.3 48.5 21.6 16.7 44.1 22.6 23.1 19.9 29.7 36.71 <br />2007 r <br />Baseline 251 <br />253 240 ---- 238 237 257 252 237 237 ---- 237 <br />The average site-wide result for sulfate has decreased 2.05 mg/L from 2007 to 2008 with a standard deviation of 36.71 mg/L. <br />Annual 2008 Sampling Report - Lupton Lakes -9- December 2008