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increasing trend for field pH at AMW-5R is not observed when the data are limited to the period of April 1999 to February 2012, indicating that values have stabilized in the past thirteen years. The first quarter 2012 field pH value at AMW-11 (7.34 s.u.) is within the range of values observed at that well since March 1994 (6.60 to 8.40 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-11 is not observed when the data are limited to the period of May 2003 to February 2012, indicating that values have stabilized in the past nine years. The first quarter 2012 field pH value at AMW- 19BR(7.40 s.u.) is within the range of values observed at that well since November 2007 (6.74 to 7.90 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-19BR is not observed when the data are limited to the period of November 2008 to February 2012, indicating that values have stabilized in the past four years. The first quarter 2012 field pH value at AMW-1 (6.49 s.u.) is within the range of values observed at that well since June 1994 (6.24 to 7.60 s.u.), but is below the National Secondary Drinking Water Standard range of 6.5 to 8.5 s.u. However,the decreasing trend for field pH at AMW-1 is not observed when the data are limited to the period of September 1996 to February 2012, indicating that values have stabilized in the past sixteen years. The first quarter 2012 field specific conductance value at AMW-1 (1,396 umhos/cm) is within the range of values observed at that well since June 1994 (492 to 2,180 umhos/cm). The increasing trend for field specific conductance at AMW-1 is not observed when the data are limited to the period of April 1998 to February 2012, indicating that values have stabilized in the past fourteen years. The first quarter 2012 field specific conductance value at AMW-5R (1,267 umhos/cm) is within the range of values observed at that well since March 1994(280 to 1,490 umhos/cm). The increasing trend for field specific conductance at AMW-5R is not observed when the data are limited to the period of July 2001 to February 2012, indicating that values have stabilized in the past eleven years. The first quarter 2012 concentration of sulfate at AMW-5R (67 mg/L) is within the range of concentrations observed at that well since March 1994 (<1 to 105 mg/L), and is below the National Secondary Drinking Water Standard of 250 mg/L. The increasing trend for sulfate at AMW-5R is not observed when the data are limited to the period of October 1998 to February 2012, indicating that concentrations have stabilized in the past fourteen years. The first quarter 2012 concentration of sulfate at AMW-10 (47 mg/L) is within the range of concentrations observed at that well since March 1994 (18 to 80 mg/L), and is below the National Secondary Drinking Water Standard of 250 mg/L. The increasing trend for sulfate at AMW-10 is not observed when the data are limited to the period of May 2001 to February 2012, indicating that concentrations have stabilized in the past eleven years. The first quarter 2012 concentration of TDS at AMW-5R (840 mg/L) is within the range of concentrations observed at that well since March 1994 (213 to 880 mg/L), but is above the National Secondary Drinking Water Standard of 500 mg/L. However, the increasing trend for TDS at AMW-5R is not observed when the data are limited to the period of May 2001 to February 2012, indicating that concentrations for this constituent have stabilized in the past eleven years. The first quarter 2012 field turbidity value at AMW-5R (>1000 NTUs) is consistent with the range of values observed at that well since May 1995 (<0.01 to >1000 NTUs). The increasing trend for field turbidity at AMW-5R is not observed when the data are limited to the period of November 2005 to February 2012, indicating that values have stabilized in the past seven years. 7