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Shell sites in San Joaquin County <br /> Page 2 <br /> 2320 E1 Dorado Street Stockton <br /> EHD staff was not available to discuss this site. - <br /> 2494 Fremont Street, Stockton <br /> ARCO has been named as a responsible party for the site (2478 E.Oak Street) to the north of this <br />{ site and will be investigating the extent of the contamination at that site. Shell should evaluate <br /> 4 whether remediation is necessary and feasible on their site. <br /> j 2375 Grant Line_Tracv <br /> Groundwater extraction by a vacuum truck from MWl:and MW6 is being performed monthly to <br /> reduce the concentrations of MTBE in these wells. A presentation was made by Dan Lescure that it <br /> i was not cost-effective to continue the vacuum truck groundwater extraction events and that <br /> j monitored natural attenuation should be considered. EHD requires complete Edefinition of the! contaminant plume to consider this alternative. Although down-gradient off-site assessment is <br /> impeded by the location of Hwy 205, further investigation down gradient, across Hwy 205 is <br /> required. <br /> j 341 Main Street.Ripon - <br /> CRA will correct the table in the Case Cloture Summary Report and upload the revised report to <br /> GeoTracker. Once EHD has received this report,EHD will proceed with providing the needed <br /> ` information to the Central Valley Regional Water Quality Control Board for case closure <br /> II consideration. <br /> 1 7700 Moreland Street Stockton <br /> A closure report was submitted for review. <br /> 6131 Pacific Avenue. Stockton <br /> if Dual-Phase extraction will be initiated once the City of Stockton issues Shell a permit to dispose of <br /> extracted groundwater to the city sewer. <br /> 3725 Tracy Blvd,Tracy <br /> A closure report was submitted for review. <br /> 880 Victor Road.Lodi <br /> ! The temporary groundwater extraction system will continue to be operated since the contaminant <br /> f plume is not defined to the south-southeast and the adjacent property owners to the south and east <br /> t I have not allowed monitoring wells to be installed on their property.. Extraction of groundwater from. <br /> MW7 in the southeast corner of the property should be evaluated as a method to keep contaminants <br /> from migrating to the adjacent parcels. <br /> +I 4315 Waterloo Road, Stockton _ - <br /> EHD-staff was not available to discuss this site. - <br /> 1 <br /> 1 <br /> 1160 Yosemite.Avenue. Manteca - - <br /> A work plan addendum will be submitted to EHD thatwill possibly include installing another <br /> monitoring well or advancing a CPT boring located north of the site to investigate the groundwater <br /> contamination north of MW-3 and MW-4. There are safety issues to consider since this site is <br /> located at a busy intersection in Manteca. <br /> r <br /> t <br />