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Page I of 2 <br /> Vicki McCartney [EH] <br /> From: Vicki McCartney [EHj <br /> Sent: Thursday, January 13, 2011 1:54 PM <br /> To: 'Gabriele Baader' <br /> Subject: RE: Frontier Transportation -425 Larch Road -Tracy—Status of Corrective Actions <br /> Attachments: 425 Larch Rd._.pdf <br /> Good morning, Ms. Baader. <br /> Unfortunately a co-worker inadvertently received the Site Conceptual Model(SCM), and in doing so, removed the <br /> reasons why I had denied the report. I did not keep a copy of the reasons for denying the report so I have gone <br /> through the SCM and have prepared the following: <br /> • Page 3 of the narrative-AA&A recommends continued quarterly groundwater monitoring for all wells. By <br /> letter dated 05 June 2009,our department approved the semi-annual monitoring and sampling of <br /> monitoring wells: MW-1, MW-2, MW-3R, MW-4, MW-8, MW-9, MW-17, MW-19, MW-20 through MW-25, <br /> and MW-27. Monitoring wells MW-5 through MW-7, MW-10 through MW-16, MW-18 and MW-26 are to <br /> be monitored and sampled biennially. <br /> • Page 9 of the narrative- states that on August 15, 1996, two hand auger samples (S1 and S2)were <br /> collected, etc. The locations of S1 and S2 are not illustrated in Figures 3,4, and 5. Please include these <br /> in the revised SCM. <br /> • Section 5.3 - I think you mean that the general vertical distribution of MTBE (not benzene)in soil is <br /> between 7 and 12 feet bgs. <br /> • Section 6.2 -the concentrations for benzene during the fourth quarter 2009 are incorrect. <br /> • Section 14.0 -the last sentence states that AA&A recommends continued quarterly groundwater <br /> monitoring. Please correct this to semi-annual monitoring. <br /> • Tables 1 and 4 -see attachment <br /> • Figures 4B, 5A, and 5B -see attachment <br /> I hope this is helpful. Please do not hesitate to contact me if you need additional information. <br /> 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@dcehd.com <br /> From: Gabriele Baader [mailto:gabi@amiadini.com] <br /> Sent: Wednesday, January 12, 20115:09 PM <br /> To: Vicki McCartney [EH] <br /> Cc: 'Ami Adini'; 'Larry' <br /> Subject: Frontier Transportation - 425 Larch Road -Tracy Status of Corrective Actions <br /> Dear Ms. McCartney, <br /> As stated in your email to Ami on January 10, 2011, earlier this year you denied the upload of four <br /> 1/13/2011 <br />