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significant trends (rising or falling) or have too few data points to establish meaningful
<br /> trends.
<br /> Well Increasing Trends Decreasing Trends
<br /> Number
<br /> AMW-1 Barium,Bicarbonate, Specific Chloride,Nitrate-N,pH, Sulfate, 1,2-DCB,
<br /> Conductance, 1,1-DCA, DCDFM
<br /> cis-1,2-DCE,Chlorobenzene
<br /> AMW-3 None Apparent None Apparent
<br /> AMW-4 Nitrate-N,pH Barium, Bicarbonate,Calcium,Chloride,GRO,
<br /> Magnesium, Potassium, Specific Conductance,
<br /> Strontium,TDS, 1,1-DCA, 1,4-DCB, Benzene,
<br /> cis-1,2-DCE, DCDFM, PCE,TCE,trans-1,2-DCE
<br /> AMW-5/5R Bicarbonate, Chloride,Nitrate-N, None Apparent
<br /> pH, Potassium, Sodium, Specific
<br /> Conductance, Sulfate,TDS
<br /> AMW-10 Arsenic,Sulfate, cis-1,2-DCE Barium, Bicarbonate,Calcium,Chloride,
<br /> Magnesium,Nitrate-N, Potassium, Sodium,
<br /> Strontium,TDS, 1,1-DCA, DCDFM,PCE,TCE
<br /> AMW-I I pH Barium, Bicarbonate,Calcium,Chloride,
<br /> Magnesium, Potassium,Specific Conductance,
<br /> TDS, 1,1-DCA,cis-1,2-DCE, DCDFM, PCE,TCE
<br /> AMW-18 None Apparent Chloride,Nitrate-N,Potassium, Sodium,TDS
<br /> AMW-19 PCE,TCE Nitrate-N, Sodium, Sulfate ---7]
<br /> AMW-19BR pH,DCDFM Nitrate-N, Potassium, Sodium, Sulfate
<br /> Notes: 1,4-dichlorobenzene=1,4-DCB 1,2-dichlorobenzene=1,2-DCB
<br /> gasoline range organics=GRO trans-1,2-dichloroethene=trans-1,2-DCE
<br /> As shown in the table above, significant increasing trends were calculated for one or
<br /> more VOC constituents in CAP wells AMW-1, AMW-10, AMW-19, and AMW-I 913R,
<br /> while two or more decreasing VOC trends were noted in CAP wells AMW-1, AMW-4,
<br /> AMW-10, and AMW-11. The increasing trend exhibited for cis-1,2-DCE at wells
<br /> AMW-I and AMW-10, suggests reductive dechlorination is occurring in the vicinity of
<br /> these wells.
<br /> 3.1.6 Domestic Well Monitoring
<br /> Two domestic wells (7898-A and 8106-A) were sampled on May 11, 2011. Table 3-3
<br /> summarizes the current analytical results for the domestic well samples collected. In the
<br /> sample collected from well 7898-A, chloroform, a suspected laboratory contaminant, was
<br /> measured at a trace concentration and DCDFM, PCE, and TCE were measured above
<br /> their PQLs. In the sample collected from well 8106-A, 1,1-DCA, chloroform, and cis-
<br /> 1,2-DCE were measured at trace concentrations, and DCDFM, PCE, and TCE were
<br /> measured above their PQLs. None of the measured VOC concentrations exceeded a state
<br /> primary drinking water standard.
<br /> D:U0II_0050\FA 2Q11.docx
<br /> 11 GeoLogic Associates
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