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r �r <br /> ConocoPhillips No. 5449/former Thrifty Oil Company No. 172 Page 2 of 2 <br /> 7647 Pacific Avenue April 15, 2013 <br /> Stockton, California 95207 <br /> The EHD has not received the report of findings from the advancement of soil boring SB-1, the <br /> installation of monitoring wells MWA 7 and MWA 9 through MW-22, nor the collection of soil gas <br /> samples SV-1 through SV-5. Submit the results from this investigation to the EHD by 15 May <br /> 2013. <br /> In the fourth quarter 2012 report, Cardno ATC had recommended that a "site investigation <br /> report be prepared to evaluate various remedial options for implementation at the site." The <br /> EHD will not comment about evaluating remedial technologies to address impacted soil and <br /> groundwater until the report of findings from the advancement of the one soil boring, installation <br /> of the five monitoring wells, and collection of the five soil gas samples has been submitted and <br /> reviewed by this agency. <br /> If you have any questions regarding this letter, please contact Vicki McCartney at (209) 468- <br /> 9852 or by email at vmccartney@sjcehd.com. <br /> Sincerely, <br /> Victoria L. McCartney, REHS Nuel C. Henderson, Jr., PG <br /> Senior Registered Environmental Health pecialist Engineering Geologist <br /> c: Ms. Gabe Stivala, PG, Cardno ATC, 701 University Avenue, Suite 200, Sacramento, <br /> California 95825 <br /> Mr. James L.L. Barton, PG, California Regional Water Quality Control Board Central Valley <br /> Region, 11020 Sun Center Drive, Suite 200, Rancho Cordova, California 95670 <br />