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Well Increasing Trends Decreasing Trends
<br /> Number
<br /> AMW-1 Barium,Bicarbonate,Specific Conductance, Nitrate-N,pH,Sulfate
<br /> 1,1-DCA,cis-1,2-Dichloroethene
<br /> (cis-1,2-13CE),Vinyl Chloride
<br /> AMW-3 None Apparent None Apparent
<br /> AMW-4 Nitrate-N Barium,Bicarbonate,Calcium,Chloride,
<br /> Magnesium,Potassium, Sodium,
<br /> Strontium,Specific Conductance,TDS,
<br /> 1,1-DCA, 1,4-Dichlorobenzene,cis-1,2-
<br /> DCE,PCE,trans-1,2-Dichloroethene,
<br /> Vinyl Chloride
<br /> AMW- Barium,Bicarbonate,Chloride,Nitrate-N, PCE,TCE
<br /> 5/5R Sodium, Specific Conductance, Sodium,
<br /> Sulfate,TDS
<br /> AMW-10 Sulfate,cis-1,2-DCE Calcium,Magnesium,Nitrate-N,
<br /> Potassium, Sodium, Strontium, 1,1-DCA
<br /> AMW-11 None Apparent Calcium,Chloride,Magnesium,
<br /> Strontium,Specific Conductance TDS,
<br /> cis-1,2-DCE,Chloroform,PCE,TCE
<br /> AMW-18 Bicarbonate Carbonate,Chloride,Nitrate-N,pH,
<br /> Potassium,Sulfate,Sodium
<br /> AMW-19 PCE,TCE Sodium,Sulfate
<br /> The increasing trend exhibited by vinyl chloride and/or cis-1,2-DCE suggests reductive
<br /> dechlorination is occurring in the vicinity of wells AMW-1 and AMW-10.
<br /> 3.1.6 Domestic Well Monitoring
<br /> Two domestic wells(7898-A and 8106-A) were sampled on November 10, 2008. Table
<br /> 3-3 summarizes the current analytical results for the domestic well samples collected. As
<br /> shown on Table 3-3, two VOCs (PCE, and TCE) were measured above the PQL in the
<br /> sample collected from domestic well 7898-A, and four VOCs (cis-1,2-13CE, DCDFM,
<br /> PCE, and TCE) were measured of the PQL in the sample collected from domestic well
<br /> 8106-A. In addition, one trace-level VOC (l,1-DCA)was also detected in the sample
<br /> collected from domestic well 8106-A.
<br /> 3.1.7 Surface Water Monitoring
<br /> During the fourth quarter 2008 monitoring period, no surface-water was observed at
<br /> monitoring stations ASW-1 and ASW-2, and as a result, surface water samples were not
<br /> collected.
<br /> 3.1.8 Leachate Monitoring
<br /> According to the Operations Manager, no leachate was taken off site during the fourth
<br /> quarter 2008. The leachate collection system, which collects leachate from the north face
<br /> of the landfill,has been operational since November 1996. WQPS (concentration limits)
<br /> are not required for leachate because it is collected and removed for disposal,rather than
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<br /> 12 Geologic Associates
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