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San Joaquin County DIRECTOR <br /> Q u N Donna Heran, REHS <br /> o .c Environmental Health a artment <br /> � K � ASSISTANT DIRECTOR <br /> �� OG <br /> Laurie Cotulla, REHS <br /> i x{ 600 East Main Str et <br /> Stockton, California 95 02-3029 PROGRAM COORDINATORS <br /> Carl Borgman, REHS <br /> Mike Huggins,REHS, RDI <br /> Website: www.s%gov.or /ehd Margaret Lagorio,REHS <br /> Phone: (209)468-34 0 Robert McClellon,REHS <br /> Fax: (209)464.013 Jeff Carruesco,REHS, RDI <br /> Kasey Foley, REHS <br /> TESORO PETROLEUM COMPANY <br /> JEFFREY BAKERS <br /> 3450 344TH WAY STE 100 <br /> AUBURN, WA 98001 <br /> RE: 2448 W. Kettleman Lane Site Code: 0001536 <br /> Lodi, Ca. 95240 <br /> WORK PLAN: Off-Site Confirmation Ground Water Sampling <br /> DATED: May 8, 2008 <br /> PREPARED BY: Azure Environmental <br /> APPROVED: [X] <br /> QED: i <br /> ADDENDUWNEEDED: [ ] Submit by: <br /> ADEQUATE AND NECESSARY ELEMENTS OF THE WORK PLAN [H&S 25296.10 (c)(3)]: <br /> 1. To assess the lateral extent of ground water contamination in the shallow and assess the <br /> vertical extent in the deeper zone down-gradient of the unauthorized release. <br /> 2. One CPT log will be completed to collect geoloc is information prior to determining the lower <br /> zone depth. A ground water sample will be coli cted from the determine deeper zone. <br /> 3. Ground water will be collected from three locations: one deep zone approximately 70 feet bgs; <br /> two shallow zone samples, the shallow zone is approximately 40-50 feet bgs. <br /> 4. Sample locations will be within approximately 60 feet laterally down-gradient of MW 1. <br /> 5. The ground water samples will be analyzed using EPA Methods: 8015,8020, and 8260B. <br /> COMMENTS AND CONDITIONS: <br /> 1. Please submit an EHD well permit application within 30 days and completed this scope of <br /> work within 60 days of permit issuance. <br /> 2. A report of findings should be completed andsubmitted within 60 days of work completion. <br /> 3. The SCM must be updated incorporating then w findings. All reports must have comments,.. <br /> conclusions, and recommendations. <br /> DATED BY 4 <br /> Harlin Knoll, Senior REHS (209)468-3442 <br />