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Consistent with revious groundwater analytical results, the:highest concentrations of petroleum <br /> hydrocarbons were ducted in the groundwater sample collected from MW-1,which contained <br /> 7,300 pgA of TPH-a"- asoline, 3,310 ggA of benzene, 156 ;.tg l of toluene,452 Wjfi of <br /> eth lbenzene,368 go of xylenes, and 25.2 ltg l of 1,2-DCA.A. bower concentrations of petroleum <br /> hydrocarbons were also detested in MW-2, -3, W-4, MW-5 and MW-6. The groundwater <br /> samples collected from MW-7 and -t slid not contain concentrations if any analyze <br /> petroleum compound above laboratory reporting limits. The groundwater sample analytical <br /> results are summarized in Table 4, the distribution of TP l-a -gasoline in first groundwater is <br /> shown in Figura 4, and the laboratory r reports are included in Appendix B. <br /> 2.3 Wastawaftr Disposal <br /> On December 22,2010, Doulr s Environmental, Inc. transported approximately 68 gallons of <br /> groundwater, accumulated from previous sampling activities as non-hazardous waste,to lrtl tr t, <br /> Inc.,in Rio Vista,Carrfornia. In trattreat d the wastewater with granular activated carbon and <br /> disposed of it according to their waste discharge permit. A copy of the non-hazardous grater <br /> transport form is included as Appendix C. <br /> 7 <br />