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• Pominary Environmental Assessment Report <br /> Pittman Elementary School,Stockton,CA <br /> December 10,2003 <br /> Page 17 <br /> • Table 11 -Laboratory Anal tical Results (Natural Gas Field <br /> Constituent: Methane H dro en Sultid <br /> Method:ASTM D-1946 ASTM D-5504 <br /> Re ortin Limit: 0.00010% 4.0 bv. <br /> Sam le ID Date <br /> 3638F-MB1-10 08/11/2003 0.00023 ND <br /> 3638F-MBI-20 08/11/2003 0.00021 ND . <br /> 3638F-MB2-10 08/11/2003 0.00022 ND <br /> 3638F-MB2-20 08/11/2003 0.00040 ND <br /> 3638F-MB3-10 08/11/2003 0.00020 ND <br /> 3638F-MB3-20 08/11/2003 0.00031 ND <br /> 3638F-MB4-10 08/12/2003 0.00027 ND <br /> 3638F-MB4-20 08/12/2003 0.00020 ND <br /> 3638F-MB5-10 08/12/2003 0.00090 ND <br /> 3638F-MB5-20 08/12/2003 0.00022 ND <br /> 3638F-MB6-10 08/12/2003 0.00027 ND <br /> 3638F-MB6-20 08/12/2003 0.00020 ND <br /> 3638F-MB8-10 08/12/2003 0.00022 ND <br /> 3638F-MB8-20 08/12/2003 0.00022 ND <br /> 3638F-MB7-10 08/13/2003 0.00028 ND <br /> 3638F-MB7-20 08/13/2003 0.00036 ND <br /> 3638F-MB9-10 08/13/2003 0.00039 ND <br /> 3638F-MB9-20 08/13/2003 0.00025 ND <br /> 3638F-MB10-10 08/13/2003 0.00019 ND <br /> 3638F-MB10-20 08/13/2003 0.00024 ND <br /> 3638F-MB 11-10 08/13/2003 0.00026 ND <br /> 3638F-MB11-20 08/13/2003 0.00040 ND <br /> 3638F-MB 11-20 08/13/2003 0.00037 ND <br /> 3638F-MB13-10 08/14/2003 0.00019 ND <br /> 3638F-MB13-20 08/14/2003 0.00020 ND <br /> 3638F-MB14-10 08/14/2003 0.00019 ND <br /> 3638F-MB14-20 08/14/2003 0.00025 ND <br /> 3638F-MB15-10 08/14/2003 0.00024 ND <br /> 3638F-MB15-19 08/14/2003 0.00021 ND <br /> 3638F-MB12-10 08/14/2003 0.00024 ND <br /> 3638F-MB12-19 08/14/2003 0.00020 ND <br /> 3638F-MB12-19 08/14/2003 0.00019 ND <br /> ppbv:parts per billion by volume <br /> W percent by volume <br /> 7.4 EASTERN FORMER UNDERGROUND STORAGE TANKS SITE RESULTS <br /> The VOCs methylene chloride (MC), 1,1,1-trichloroethane (1,1,1-TCA), benzene, toluene, <br /> tetrachloroethane (PCE), ethyl benzene, m,p-xylene, o-xylene, 1,2,4-trimethylbenzene, 1,3-butadiene, <br /> hexane, cyclohexane, heptane, acetone, carbon disulfide, 2-butanone [methyl ethyl ketone (MEK)], and <br /> • ethanol were detected in the soil gas samples. A summary of detected VOC constituents in the soil gas <br /> CONDOR <br />