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The second quarter 2012 concentration of barium at AMW-1 (0.44 mg/L) is below the National Primary Drinking Water Standard of 2 mg/L. The increasing trend for dissolved barium at AMW-1 is not observed when the data are limited to the period of November 2005 to May 2012, indicating that concentrations have stabilized in the past seven years. The second quarter 2012 concentration of barium at AMW-19 (0.19 mg/L) is below the National Primary Drinking Water Standard of 2 mg/L. The increasing trend for dissolved barium at AMW-19 is not observed when the data are limited to the period of May 2004 to May 2012, indicating that concentrations have stabilized in the past eight years. The second quarter 2012 concentration of bicarbonate alkalinity at AMW-1 (650 mg/L) is within the range of concentrations observed at that well since June 1994 (264 to 1,300 mg/L). The increasing trend for bicarbonate at AMW-1 is not observed when the data are limited to the period of September 1994 to May 2012, indicating that concentrations have stabilized in the past eighteen years. The second quarter 2012 concentration of bicarbonate alkalinity at AMW-5R (460 mg/L) is within the range of concentrations observed at that well since March 1994 (148 to 550 mg/L). The increasing trend for bicarbonate at AMW-5R is not observed when the data are limited to the period of December 1994 to May 2012, indicating that concentrations have stabilized in the past eighteen years. The second quarter 2012 concentration of bicarbonate alkalinity at AMW-18 (370 mg/L) is within the range of concentrations observed at that well since March 2004 (28 to 370 mg/L). The increasing trend for bicarbonate at AMW-18 is not observed when the data are limited to the period of February 2005 to May 2012, indicating that concentrations have stabilized in the past seven years. The second quarter 2012 concentration of chloride at AMW-5R(I 10 mg/L)is within the range of concentrations observed at that well since March 1994 (1.24 to 130 mg/L), and is below the National Secondary Drinking Water Standard of 250 mg/L. The increasing trend for chloride at AMW-5R is not observed when the data are limited to the period of February 2000 to May 2012, indicating that concentrations have stabilized in the past twelve years. The second quarter 2012 concentration of nitrate at AMW-4 (0.034 mg/L) is within the range of concentrations observed at that well since March 1996 (<0.012 to 5.7 mg/L), and is below the National Primary Drinking Water Standard of 10 mg/L. The increasing trend for nitrate at AMW-4 is not observed when the data are limited to the period of October 2001 to May 2012, indicating that concentrations have stabilized in the past eleven years. The second quarter 2012 concentration of nitrate at AMW-5R(25 mg/L) is within the range of concentrations observed at that well since March 1994 (<0.012 to 32 mg/L), but is above the National Primary Drinking Water Standard of 10 mg/L. However, the increasing trend for nitrate at AMW-5R is not observed when the data are limited to the period of November 2003 to May 2012, indicating that concentrations have stabilized in the past nine years. The second quarter 2012 field pH value at AMW-4 (7.1 s.u.) is within the range of values observed at that well since March 1996 (6.05 to 8.41 s.u.), and is within the National Secondary Drinking Water Standard range of 6.5 to 8.5 s.u. The increasing trend for field pH at AMW-4 is not observed when the data are limited to the period of February 2004 to May 2012, indicating that values have stabilized in the past eight years. The second quarter 2012 field pH value at AMW-5R(7.16 s.u.)is within the range of values observed at that well since March 1994(6.00 to 7.72 s.u.), and is within the National Secondary Drinking Water Standard range of 6.5 to 8.5 s.u. The increasing trend for field pH at AMW-5R is not observed when the data are limited to the period of April 1999 to May 2012, indicating that values have stabilized in the past thirteen years. The second quarter 2012 field pH value at AMW-11 (7.44 s.u.) is within the range of values 6