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i <br /> Ar ary Environmental Assessment Report <br /> Pittman Elementary School,Stockton,CA <br /> December 10,2003 <br /> Page 18 <br /> • samples is presented in Table 12, below. Laboratory report sheets indicating analytical methods used, <br /> detection limits, and the results of the analyses are included in Appendix B. Selected analytical results <br /> are indicated on Figure 12,Appendix A. <br /> Table 12-Laborator Analytical Results astern UST Site -Soil Gas <br /> Sample ID: 3638F-VB5-6 3638F-VB5-16 3638F-VB6-7 3638F-VB6-17 3638F-VB7-7 3638F-VB7-17 3638F-VB8-10 3638F-VB8-20 <br /> Date: 08/13/2003 08/13/2003 08/14/2003 08/14/2003 08/14/2003 08/14/2003 08/15/2003 08/15/2003 <br /> Reporting <br /> Constituent Limit Units <br /> Ran e <br /> Methylene Chloride 0.68-3.6 ppbv <0.74 <0.73 <0.73 <0.74 <0.72 <0.68 <0.72 3.2 <br /> 1,1,1-Trichloroethane 0.68-3.6 ppbv 1.1 <0.73 5.0 <0.74 <0.72 <0.68 <0.72 <0.80 <br /> Benzene 0.68-3.6 ppbv <0.74 <0.73 <0.71 1.3 <0.72 <0.68 <0.72 <0.80 <br /> Toluene 0.68-3.6 ppbv 3.4 3.4 1.3 8.1 5.1 21 12 21 <br /> Tetrachloroethene 0.68.3.6 ppbv 2.4 <0.73 19 1.1 0.85 <0.68 <0.72 <0.80 <br /> Eth 1 Benzene 0.68-3.6 ppbv <0.74 <0.73 <0.73 1.2 <0.72 <0.68 <0.72 <0.80 <br /> M, -X lene 0.68.3.6 ppbv 2.2 2.6 <0.73 4.0 1.6 0.97 0.84 1.2 <br /> o-Xylene 0.68-3.6 ppbv <0.74 <0.73 <0.73 1.2 <0.72 <0.68 <0.72 <br /> 1,2,4-3'rimeth (benzene 0.68-3.6 ppbv 1.2 0.74 <0.73 1.2 <0.72 <0.68 <0.72 <br /> 1,3-Butadiene 0.68-3.6 ppbv 1.7 1.0 <0.73 3.2 0.82 1.0 <0.72 1.3 <br /> Hexane 0.68-3.6 ppbv <0.74 0.87 <0.73 2.2 <0.72 <0.68 <0.- 0.96 <br /> C clohexxne 0.68-3.6 ppbv <0.74 <0.73 <0.73 <0.74 <0.72 <0., <br /> He lane 0.68-3.6 ppbv <0.74 <0.73 <0.73 1.5 c0.72 <0.68 <0.72 1.6. <br /> • Acetone 2.9-15 ppbv 28 39 10 53 47 34 4.8 16 <br /> Carbon Disulfide 2.9-15 ppbv <3.0 4.8 <2.9 <3.0 <2.9 <2.7 <2.9 <3.2 <br /> 2-Butanone(MEK) 2.9-15 ppbv 4.3 4.1 <2.9 5.6 3.4 4.9 <2.9 <3.2 <br /> Ethanol 2.9-15 ppbv <3.0 3.7 <2.9 3.6 3.5 5.1 3.0 3.6 <br /> <:not detected at the reporting limit shown <br /> ppbv:parts per billion by volume <br /> MEK:methyl ethyl ketone <br /> The only VOC detected in groundwater was 1,2-dichloroethane (1,2-DCA) in the groundwater sample <br /> (3638F-VB7-8-15-03) collected closest to the former UST site. A summary of detected VOC constituent <br /> in the groundwater samples is presented in Table 13, below. Laboratory report sheets indicating <br /> analytical methods used, detection limits, and the results of the analyses are included in Appendix B. <br /> Selected analytical results are indicated on Figure 13, Appendix A. <br /> Table 13-Laborator Anal tical Results Eastern UST Site -Groundwater <br /> constituent: 1 2-Dish loroe thane <br /> MCL: 0.5 L <br /> Sam le ID Date <br /> M3638F-Vff <br /> 3 08/13/2003 <0.5 <br /> 3 08/14/2003 <0.5 <br /> 3 08/14/2003 8.0 <br /> 3 08/14/2003 <0.5 <br /> pg/L:micrograms per liter <br /> MCL:California Department of Health Services Primary Maximum Contaminant Level <br /> C0 OR <br />