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S E C 0 R <br /> 7-Eleven Store#32262 <br /> Site Assessment Report <br /> December 12, 2003 < <br /> Page 7 <br /> } <br /> MtBE in groundwater is defined to the south (MW-1 non-detect), but is not defined to the west, north, <br /> or east (1,700 ug/L, 120,000 ug/L, and 95 ug/L, respectively) MtBE is also not defiend vertically <br /> (270 ug/L in MW-6D), but future sampling of MW-6D will establish whether or not concentrations are <br /> stable in the deeper zone SECOR will continue quarterly groundwater monitoring and sampling of <br /> MW-1 through MW-5, and MW-6D, to monitor groundwater flow direction and gradient, and track the <br /> stability of the dissolved petroleum hydrocarbon plume <br /> Six private domestic wells were identified within a 2,000-foot radius of the site, five of which were <br /> visually confirmed during a field search No other sensitive receptors such as municipal wells or <br /> surface water receptors were identified within 2,000 feet of the site <br /> The well survey results and analytical data presented in this report will be uploaded into the State of <br /> California Geotracker database <br /> If you have any questions concerning the information presented in the report, please feel free to call <br /> Jaff Auchterlonie at 916-861-0400 ext 223 <br /> 4.+ <br /> `d <br /> 4 <br /> t <br /> s <br /> tf <br /> • Qh <br /> i <br /> i <br /> �w <br /> 4 <br /> 32262 Assessment Report SECOR Intemational Incorporated <br />