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San Joaquin County <br /> eP " Environmental Health Department DIRECTOR <br /> 600 East Main Street Donna Heran, REHS <br /> Stockton, California 95202-3029 PROGRAM COORDINATORS <br /> Robert McClellon,REHS <br /> _ ,�; Jeff Carruesoo,RENS, RDI <br /> cq F <br /> 6r Website: www.sjgov.org/ehd Kasey Foley,REHS <br /> Phone: (209)468-3420 <br /> Fax: (209)464-0138 <br /> May 20, 2010 <br /> Terry Grayson <br /> Conoco Phillips <br /> Risk Management&-Remediation <br /> 76 Broadway <br /> Sacramento, CA 95818 <br /> RE: Former UNOCAL#6981 <br /> 4707 Pacific Avenue <br /> Stockton, CA 95207 <br /> WORK PLAN: Work Plan for Additional Assessment APPROVED: [X] <br /> DATED: May 18,2010 DISAPPROVED: [ ] <br /> PREPARED BY: Stantec Consulting Corporation <br /> ADEQUATE AND NECESSARY ELEMENTS OF THE WORK PLAN [H&S 25296.10(c)(3)]: <br /> 1. Advancement of one confirmation soil boring to 60 feet below surface grade (bsg). The boring will <br /> be located near the area of highest documented soil contamination. Soil samples for laboratory <br /> analysis will be collected at five-foot intervals from surface to total depth. <br /> 2. Installation of four soil vapor probes and collection of four soil vapor samples for laboratory <br /> analysis. The probes will be located in both source and non-source areas, and advanced to a <br /> depth of five feet bsg. Cal EPA-DTSC protocols for collecting soil vapor samples will be followed. <br /> COMMENTS AND CONDITIONS: <br /> 1. Please proceed with submittal of an EHD well permit application and required $89.00 permit fee <br /> for each C-57 license holder who will be performing work on the site. <br /> 2. Please proceed with scheduling the approved work; a report of findings is due for submittal to the <br /> EHD within 60 days following completion of the fieldwork. <br /> 3. Forty-eight hours notice to the EHD is required prior to initiation of any fieldwork. <br /> REASONS FOR DISAPPROVAL OF THE WORK PLAN [H&S 25296.10 (c)(3)]: None <br /> (Crz"' )"t., <br /> Lori Duncan, REHS <br /> Senior Registered Environmental Health Specialist <br /> c: Jim Barton, CVRWQCB, 11020 Sun Center Drive#200, Rancho Cordova, CA 05670 <br /> Ben Chevlen, Stantec, 290 Conejo Ridge Avenue, Thousand Oaks, CA 91361 <br /> Rebecca Seevers, Target Corp., PO Box 9456, Minneapolis, MN 55440 <br />