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r <br /> A ALIMI AL DATA <br /> Each groundwater sample was transported on ice in a light proof chest to American Analytics Laboratory The <br /> samples were analyzed for total hydrocarbons (TPHg) and volatile aromatic compounds (BTEX) by EPA methods <br /> 8015 and 8020, respectively Table 1 presents a summary of the TPHg and 13TEX data The complete laboratory <br /> reports for the current samples are included in Appendix B <br /> The results indicate the presence of TPHg in two of four wells on-site (ranging from less than detectable to 16 <br /> mg/L) Benzene concentrations ranged from less than 0 5 ug/L to 720 ug/L with the highest concentration noted <br /> in well MW-3 A benzene iso-con map is presented on figure 3. <br /> UDAING <br /> Based on the resent site investigation and momtoring program, it appears that the shallow water zone found beneath <br /> the site has been affected by the release of gasoline Based on the monitoring events, the flow direction of <br /> groundwater across the site is generally to the south and south east Thrifty will continue to monitor the on-site <br /> wells on a quarterly basis If you have any questions, please contact me at (310) 923-9876 <br /> Very truly yours, <br /> L <br /> Peter D'Amico <br /> Manager <br /> . Environmental Affairs <br />