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Page 4 of 5 <br /> LJ <br /> Joseph Krohn, PG <br /> Taber Consultants <br /> 707 365 5843 <br /> jkm hnAptaberconsultants.com <br /> From: Vicki McCartney [EH] [mai Ito:vmccartney@sjcehd_.com] <br /> Sent: Tuesday, June 28, 2011 11:36 AM <br /> To: Joseph Krohn <br /> Subject: RE: 3105 E EI Dorado - California Tank Lines <br /> Joseph: <br /> The groundwater concentrations listed in Figures 8 through 12 of the Corrective Action <br /> Plan Feasibility Study, dated June 2011, do not agree with the concentrations listed in <br /> the groundwater tables for MW-1 through MW-4 listed in Semi-annual Monitoring <br /> Report Third Quarter 2010, dated 06 March 2011 submitted by Environeering. Inc. <br /> Please look into this matter. <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(ci!sicehd.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 <br /> the concentration, or 100%. For the dissolved, the concentration was in kg/I, <br /> or parts per billion. <br /> Table 5 in the CAP presents the data used to generate the contour maps. In <br /> general, the most recent GW analytical data was used when available. MW-2 <br /> and MW-4 were Sep 2010. MW-1 and MW-3 were Feb 2010. P-1 through P-4 <br /> and S-5 were 2007. GP-1 and GP-2 were Oct 2010. <br /> Please note my new email address below. <br /> Joseph Krohn, PG <br /> Taber Consultants <br /> 707 365 5843 <br /> 8/25/2011 <br />