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3.3.4 Magnesium <br />Magnesium concentrations have not shown an identifiable trend in concentrations over the sampling period. The baseline <br />• level for CRMW09 and CRMW16 was not established in the WOBR because only two samples were reported at that time. <br />Four additional samples are reported from December 2006 through October 2007 for these two wells. The baseline levels for <br />these two wells have been updated using this additional data. <br />Magnesium <br />• <br /> Wells (CRMW) Site/Group <br /> 01 02 04 05 06 07 09 16.0 40 41 42.0 AVG <br />Oct-05 31.6 36.8 21.1 ---- 25.9 27.7 ---- ---- 20.5 26.7 ---- 27.2 <br />Nov-05 26 28 27 29 25 23 28 30 19 28 26 26.3 <br />Dec-05 26 24 27 ---- 23 19 ---- ---- 18 28 ---- 23.6 <br />Apr-O6 43 37 100 ---- 35 35 ---- ---- 63 34 ---- 49.6 <br />Jul-06 35 30 19 ---- 30 29 ---- ---- 21 31 ---- 27.9 <br />Oct-06 40 30 27 27 29 37 39 39 38 30 31 33.4 <br />Dec-06 38.8 30.3 30.0 ---- ---- ---- 45.6 31.2 ---- ---- ---- 35.2 <br />Apr-07 32.2 33.5 16.7 ---- 19.2 ---- 47.3 32.3 ---- 35.6 ---- 31.0 <br />Jul-07 33.3 33.5 11.5 ---- 21.7 ---- 40.8 30.8 ---- 41.6 21.2 29.3 <br />Oct-07 32.8 28.6 13.5 25.7 18.8 ---- 41.2 19.8 16.9 43.5 17.2 25.8 <br />Average 33.9 31.2 29.3 27.2 25.3 28.5 40.3 30.5 28.1 33.2 23.9 30.48 <br />Stnd Dev. 5.6 4.1 25.6 1.7 5.3 6.9 6.8 6.2 17.0 6.1 6.0 11.62 <br />2006 <br />Baseline 44 44 68 ---- 44 44 ---- ---- 48 44 ---• 44 <br />2007 <br />Baseline 44 44 68 ---- 44 44 47 44 48 44 ---- 44 <br />The average site-wide result for magnesium has decreased 0.59 mg/L to 30.5 mg/L with a standard deviation of 11.62 mg/L. <br />J <br />Annual 2007 Sampling Report -Lupton Lakes -14- January 2008 <br />