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r <br /> Pacific Operations <br /> Los Angeles <br /> 5785 Corporate Avenue Suite 150 Clayton <br /> Cypress,CA 90630 <br /> (714)229-4806 ENVIRONMENTAL <br /> Fax(714)229-4805 CONSULTANTS <br /> February 12, 1993 <br /> Mr. Michael Infurna <br /> San Joaquin County <br /> Public Health Services <br /> Environmental Health Division <br /> 1601 East Hazelton Avenue <br /> Stockton, CA 95201 <br /> Clayton Project No. 46514.00 <br /> Subject: Workplan for Subsurface Soil Inves igation at 150 W. Yosemite Avenue, <br /> Manteca, California <br /> Dear Mr. Infurna: <br /> On behalf of Wells Fargo Bank, Clayton Enviroiimental Consultants, Inc. is submitting <br /> this workplan to obtain approval from the San Joaquin County Public Health Services, <br /> Environmental Health Division (PHS-EHD) for the investigation activities that are <br /> planned for the site. <br /> Clayton Environmental Consultants,Inc. was retained by Wells Fargo Bank to evaluate <br /> if soil at the subject property has been impacted ty volatile organic compounds (VOCs). <br /> It is Clayton's understanding that, according to h'storical records, the site was formerly <br /> occupied by a gasoline service station. The site 's currently occupied by a vacant bank <br /> branch building. <br /> Clayton plans to hand-drill three boreholes in the downstairs "community room" of the <br /> bank where noted on the attached Figure 1. <br /> For each borehole, the auger will be advanced to the desired depth for sampling. Soil <br /> sampling will occur at 5-foot intervals starting at 5 feet and ending at most at 15 feet <br /> below the existing surface grade. As the auger -is advanced, the soil returns (drill <br /> cuttings) will be placed either in DOT Class 17-H drums or on and covered by <br /> polyethylene sheeting for proper disposal by We is Fargo Bank. <br /> Soil samples will be collected using a drive sampler with extension 'rods• to collect <br /> samples from the borehole bottoms. Soil samples will be collected using a 2-314 inch <br /> P:1Pub1ic\EP.1WP511e46514.wp <br /> Clayton Environmental Consultants,Inc. • A Marsh&McLennan Company • Novi,MI + Edison,NJ • Wayne,PA • Kennesaw,GA <br /> Pleasanton,CA • Cypress,CA • Windsor,Ontario Toronto,Ontario • Birmingham,U.K, • London,U.K. • Southampton,U.K. <br />