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� I <br /> San Joaquin County <br /> oP " . Environmental Health Department DIRECTOR <br /> Donna Heran, REHS <br /> 600 East Main Street <br /> Stockton, California 95202-3029 PROGRAM COORDINATORS <br /> Robert McClellon, REHS <br /> _- — - - Jeff Carruesco, RENS, RDI <br /> h <br /> C". P% Kasey Foley, REHS <br /> Website: www.sjgov.org/ehd Linda Turk tte, REHS <br /> Phone: (209) 468-3420 <br /> Fax: (209) 464-0138 <br /> December 1, 2011 <br /> ConocoPhillips Risk Mgmt/Rem 64I, ,x. Thrifty Oil Company. <br /> Ms. Shelby Lathrop lL � � Z 0 ►`t-- Mr. Chris Panaitescu <br /> 76 Broadway (n I . , A- 13116 Imperial Highway <br /> Sacramento, CA 95812 Yom" Santa Fe Springs, CA 90670 <br /> I� <br /> Subject: CP #5449/former TOC #172 eff 1-5' LOP Case #: 1227 <br /> 7647 Pacific Avenue CUF #: 002156 <br /> Stockton, CA 95207 Global ID#: T0607700504 <br /> WORKPLAN: Work Plan to Perform Additional Site Assessment Activities <br /> DATED: November 22, 2011 <br /> PREPARED BY: Benjamin Chevlen, P.G., ATC Consulting <br /> STATUS: APPROVED (with conditions noted below) <br /> ADEQUATE AND NECESSARY ELEMENTS OF THE WORKPLAN [Health & Safety <br /> Code (H&S) Section 25296 10(c)(I <br /> • Install three shallow onsite (MW-17 through MW-19) and three deep zone onsite <br /> replacement monitoring wells. (MW-20 through MW-22) <br /> • Install five shallow soil vapor points for soil vapor intrusion evaluation. (SV1-SV5) <br /> • Install one deep onsite soil boring for soil vertical delineation investigation. (SB-1) <br /> • Collect soil and soil vapor samples and analyze for petroleum hydrocarbons, <br /> oxygenates, and lead scavengers. <br /> • Submit a report of findings. <br /> COMMENTS AND CONDITIONS <br /> • Submit an EHD Well Permit Application Form, fees, and Master File Record by <br /> January 3, 2012. <br /> • Submit the report to Geotracker within 90-days from the completion of the <br /> installations. <br /> REASONS FOR DISAPPROVAL OF THE WORKPLAN [H&S Section 25296 10(cM <br /> • none <br /> BY <br /> Michael Infurna, Senior egister d Environmental Health Specialist (209) 468-3454 <br /> C: Mr. James L. Barton, Central Valley Regional Water Quality Control Board, <br /> Underground Storage Tank Unit, 11020 Sun Center Drive, #200, Rancho Cordova, <br /> CA 95670-6114 . <br /> Mr. Kirk Larson, State Water Resources Control Board, Division of Cleanup Water <br /> Programs, Underground Storage Tank Program, PO Box 944212, Sacramento, CA <br /> 94244-2120 . <br /> Mr. Benjamin Chevlen, ATC Associates, 25 Cupania Circle, Monterey Park, CA <br /> 91755 <br />