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TABLE 1 <br /> Detected Concentrations of Volatile Organic Compounds <br /> Push-In Polyvinyl Chloride Piezometer (PIPP) Groundwater and Selected Monitoring Well Samples <br /> Lincoln Center, Stockton, California <br /> (Concentrations in micrograms per lifer(Ng/L)) <br /> Sample Dichloro- Chloro- <br /> Sample ID Date Depth PCE TCE cis-12 DCE trans-112 Vinyl 1,1-DCE 1,1,1-TCA Benzene difloro- <br /> Sampled Interval DCE Chloride methane form <br /> , <br /> (feel bgs) <br /> QA/QC Samples <br /> . nailer Blanks <br /> PIPP-106-60KB 11/27/96 — <0.5 <0.5 <0.5 <0.5 <2 <0.5 <0.5 NA <2 <0.5 <br /> PIPP-IIS-61K6 -- <0.5 <0.5 <0.5 <br /> <0.5 <2 <0.5 <0.5 NA <2 <0.5 <br /> Trip Blank 11/22/96 — <0.5 <0.5 <0.5 <0.5 <2 <0.5 <0.5 NA <2 <0.5 <br /> Data entered by KAB/Jan 3, 1997.QA/QC by <br /> Notes: <br /> PIPP samples,trip blank,and bailer blanks analyzed by Amercian Environmental Network of Pleasant Hill,California using EPA Method 8010 <br /> MW samples analyzed by Quantema Environmental Services of West Sacramento,California using EPA Method 8260A <br /> PCE=Tetrachloroethene <br /> TCE=Trichloroethene <br /> cis-1,2 DCE=cis-1,2 Dichloroethene <br /> trans-1,2 DCE=trans-1,2 Dichloroethene <br /> • I,1-DCE= 1,1 Dichloroethene <br /> I,I,I-TCA= I,1,1 Trichloroethene <br /> KB indicates bailer blank <br /> bgs=below ground surface <br /> NA=Not Analyzed <br /> QA/QA=Quality Assurance/Quality Control <br /> --=not specified <br /> 9 <br /> PIPP.INT <br /> Page 4 of 4 1/13/97 <br />