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f <br /> _. Page 1 of 1 <br /> Vicki McCartney [EH] <br /> From: Vicki McCartney [EH] <br /> Sent: Monday,April 20, 2009 2:16 PM <br /> To: 'Kirk Larson' <br /> Cc: Nuel Henderson [EH] <br /> Subject: Site at 620 Charter Way, Stockton,-California <br /> Kirk: <br /> In response to Revised 5-year Review Summary Report for Claim Number 4954;Site Address: 620 Charter Way, <br /> Stockton, California, dated March 9, 2009, the San Joaquin County Environmental Health Department(EHD) <br /> concurs with the recommendation by the Underground Storage Tank Cleanup Fund to direct the responsible party <br /> to assess remedial technologies that can reduce the mass of fuel hydrocarbons in the deeper zones. In addition <br /> to high concentrations of contaminants detected onsite beneath monitoring wells MW-16-50, MW-16-77, and MW- <br /> 16-90, groundwater collected from off-site wells MW-13-50, MW-13-77, and MW-14-77, installed in February <br /> 2008, indicts contaminants of concern are present east of the Shell site at depths of fifty and seven-seven feet <br /> below surface grade(bsg). <br /> Today, I drafted a letter directing a feasibility study/remedial action plan be submitted to the EHD by July 29, <br /> 2009, to mitigate petroleum hydrocarbon contamination in Zone A(approximately twenty to forty feet bsg), Zone B <br /> (approximately forty-five to fifty feet bsg), Zone,C (approximately seventy-two to seventy-seven feet bsg), and at <br /> approximately ninety feet bsg near MW-16-90. There are too many variables for me to predict when active <br /> remediation will take place at this site. <br /> Vicki McCartney,Senior REHS <br /> San Joaquin County <br /> Environmental Health Department <br /> 600 East Main Street <br /> Stockton,California 95202 <br /> Phone: (209)468-9852 <br /> Fax: (209)468-3433 <br /> Email: vmccartnneya%sjcehd.com <br /> 4/20/2009 <br />