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Project Number 2098RV26 January 22,2025 <br /> TABLE 3 <br /> SUMMARY OF HISTORIC GROUNDWATER ANALYTICAL DATA <br /> PARK WOODS CLEANERS <br /> 1744 WEST HAMMER LANE <br /> STOCKTON, CALIFORNIA <br /> SAMPLE ID DATE PCE TCE cis-1,2-DCE trans-1,2-DCE 1,1-DCE 1,1-DCA 1,2-DCA 1,2,4-TMB CF VC <br /> µg/L <br /> 11/14/2018 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <br /> 8/13/2019 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <br /> 2/19/2020 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <br /> 9/28/2020 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 <br /> 12/21/2020 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 <br /> 2/19/2021 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 <br /> DW-4 (GAC 5/6/2021 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 <br /> Mid-Point) 9/17/2021 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 <br /> 12/20/2021 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 <br /> 4/l/2022 Not Sampled- Inaccessible <br /> 12/7/2022 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 <br /> 7/10/2023 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 <br /> 9/28/2024 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 0.25 nd<0.50 <br /> DW-4 (GAC 2/19/2020 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <br /> EFF) <br /> Results in micrograms per liter (µg/L) = parts per billion (ppb) <br /> Analytical Methods:VOCs - EPA 8260B <br /> nd = Not Detected at or above Method Detection Limit which is indicated by number <br /> PCE = tetrachloroethene 1,2-DCA= 1,2-dichloroethane <br /> TCE = trichloroethene 1,2,4-TMB = 1,2,4-trimethylbenzene <br /> cis-1,2-DCE = c-1,2-dichloroethene CF=chloroform <br /> trans-1,2-DCE=t-1,2-dichloroethene VC=vinyl chloride <br /> 1,1-DCE= 1,1-dichloroethene <br /> 1,1-DCA= 1,1-dichloroethane <br /> Table 3-12 <br /> E2 C Remediation <br />