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Page 3 of 3 <br /> Email: -,•mccartney(ci'. icehd.com <br /> From: Joseph Krohn [mailto:JKrohn@taberconsultants.com] <br /> Sent: Monday, June 27, 2011 4:45 PM <br /> To: Vicki McCartney [EH] <br /> Subject: RE: 3105 E EI Dorado - California Tank Lines <br /> Calculation is attached. For free product, we used 1 billion parts per billion as the <br /> concentration, or 100%. For the dissolved, the concentration was in µg/I, or parts per <br /> billion. <br /> Table 5 in the CAP presents the data used to generate the contour maps. In general, the <br /> most recent GW analytical data was used when available. MW-2 and MW-4 were Sep 2010. <br /> MW-1 and MW-3 were Feb 2010. P-1 through P-4 and S-5 were 2007. GP-1 and GP-2 were <br /> Oct 2010. <br /> Please note my new email address below. <br /> Joseph Krohn, PG <br /> Taber Consultants <br /> 707 365 5843 <br /> jkrohn@taberc-onsultants.com <br /> From: Vicki McCartney [EH] [ma i Ito:vmccartney@sjcehd.com] <br /> Sent: Monday, June 27, 2011 3:30 PM <br /> To: Joseph Krohn; Tom Ballard <br /> Subject: 3105 E EI Dorado - California Tank Lines <br /> Hi Joseph, <br /> I reviewed Corrective Action Plan Feasibility Study(CAPFS)for California Tank Lines located <br /> at 3105 South EI Dorado Street in Stockton. Included in the report were contaminant mass <br /> estimates for sorbed free product and dissolved TPH-Gasoline and TPH-Diesel; however, the <br /> calculations were not included, nor were the mass estimates for sorbed and dissolved TPH- <br /> Motor Oil, benzene, and 1,2-DCA. Please provide this information to me. Also, in Figures <br /> 8 through 12 of the CAPFS concentrations are reported for TPH-G, TPH-D, TPH-MO, <br /> benzene and 1,2-DCA in groundwater collected from MW-1 through MW-4. Please tell <br /> me the source of these concentrations. Thank you. <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: vmccartney( �cehd.com <br /> 8/11/2011 <br />