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Shell sites in San joaquin County . <br /> Page 2 _•4 <br /> 2320 El 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 (2418 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 /> whether remediation is necessary and feasible on their site. <br /> 2375 Grant Line Trac <br /> I �Groundwater extraction by a`vacuum truck from MW1 and MW6 is being performed monthly to <br /> j. reduce the concentrations of MTBE in these wells. A presentation was made by Dan Lescure that it <br /> was not cost-effective to continue the vacuum truck groundwater extraction events and that <br /> r monitored natural attenuation should be considered. EHD requires complete definition of the <br /> 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 /> 341 Main Street,Ripon <br /> CRA will correct the table in the Care Closure Summary Report and upload the revised report to <br /> GeoTracker. Once EHD has received this report,EHD.vvill proceed with providing the needed <br /> information to the Central Valley Regional Water Quality Control Board for case closure <br /> consideration. <br /> 1 <br /> 7700 Moreland Street,Stockton <br /> { A closure report was submitted for review. <br /> 6131 Pacific Avenue, Stockton <br /> 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 /> k 3725 Tracy Blvd,Tracy <br /> A closure report was submitted for review. <br /> 4 <br /> 880 Victor Road,Lodi ' <br /> ' The temporary groundwater extraction system will continue to be operated since the contaminant <br /> 4. <br /> L plume is not defined to 'the south-southeast and the adjacent property owners to the south and east <br /> 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 /> 4315 Waterloo Road, Stockton <br /> j EHD staff was not available to discuss this site. <br /> '1160 Yosemite Avenue, Manteca <br /> A work plan addendum will be submitted to EHD that will 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(VtXXI-3'and MW-4. There are safety issues to consider since this site is <br /> located at a busy intersection in Manteca. <br /> `e[r <br /> f <br /> l <br /> 1 <br />