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i <br /> San Joaquin CountY DIRECTOR <br /> Department <br /> � <br /> Donna Heran,REHS <br /> Environmental Health De a meet ASSISTANT DIRECTOR <br /> Laurie Cotulla, REHS <br /> 600 East Mala Street <br /> y :{ Stockton, California 95202-3029 PROGRAM COORDINATORS <br /> Carl Borgman,REHS <br /> -�: Wke Huggins,REHS,RDI <br /> c •:. ° �� Website: www.sjgov.org/ehd Margaret Lagorio,REHS <br /> �Ci o' er Phone: (209) 468-3420 Robert McClehan, REHS <br /> Fax: (209) 464-0138 Jeff Carruesco, REHS,RDI <br /> Kasey Foley,REHS <br /> i <br /> I <br /> CHARLES MILLER <br /> USA PETROLEUM COMPANY <br /> 30101 AGOURA CT. #200 <br /> AGOURA CA 93101-4311 <br /> RE: USA Station 65 Site Code: 1356 <br /> 2500 W. Lodi Ave. <br /> WORK PLAN: Dual Phase Extraction Pilot Test <br /> DATED: January 11, 2008 <br /> PREPARED BY: Stratus Environmental <br /> APPROVED: [X] <br /> ADEQUATE AND NECESSARY ELEMENTS OF THE WORK PLAN [H&S 25296.10 (c)(3)]: <br /> -1. To complete an 8-hour dual phase (ground water and vapor extraction) pilot test on existing <br /> on-site MW-3 utilizing a portable trailer mounted system. <br /> ' 2. To collect vapor and ground water samples for analysis from MW-3 during the pilot test. <br /> 3. To monitor vacuum during the test from existing MW-4 and MW-10 to determine lateral <br /> influence. <br /> i 4. The data collected during the test will be used to evaluate the feasibility of removing/reducing <br /> li the adsorbed and dissolved hydrocarbon contamination from the contaminated area. <br /> 5. To store the extracted ground water in an existing on-site above ground tank, profile the <br /> waste, and obtain approval prior to disposal. <br /> COMMENTS AND CONDITIONS: <br /> 1. A report of findings with recommendations will be prepared and submitted to EHD and <br /> CVRWQCB for review and comment within 8 weeks of receiving all analytical results. <br /> -2. EHD can not approve any full-scale corrective action using dual phase extraction until the test <br /> data is evaluated. <br /> 3. Quarterly ground water monitoring will be required until site closure is granted. <br /> DATED 40 BY • kZll, <br /> Harlin Knoll Senior.REHS 209 468-3442 <br /> Cc: Stratus Environmental <br /> Kristmont West Inc. <br />