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Mr. Michael Infurna November 7, 1991 <br /> Q2320 1837 Page 2 <br /> TA_,SK 3: SOIL SAMPLING <br /> Upon completion of the excavation three soil samples or as determined by the San Joaquin Local <br /> Health District Environmental Health Division site representative will be taken from the bucket of the <br /> excavator. Each soil sample will be screened for volatile compounds utilizing a photoionization <br /> detector. The soil samples will be described (using the Unified Soil Classification System) by a <br /> Groundwater Technology field geologist, working under the supervision of a California Registered <br /> Geologist. The samples will be sealed with aluminum foil, capped, taped, labeled, and placed on ice <br /> in an insulated container. <br /> TASK 4: LABORATORY ANALYSES <br /> Groundwater Technology will select the soil samples from the excavation utilizing the previously noted <br /> field screening techniques. Each sample will then be analyzed by a State-certified laboratory for <br /> benzene,toluene,ethylbenzene and total xylenes(BTEX), and total petroleum hydrocarbons-as-gasoline <br /> (TPH-G) by EPA-approved Methods 5030/8020/8015. <br /> TASK 5: SOIL STORAGE & DISPOSAL <br /> All soil generated during the site activities will be stored on site. Approximately, 139 cubic yards are <br /> currently stockpiled at the site pending characterization and disposal at a recycling facility. An <br /> estimated additional 100 cubic yards will be generated by the next excavation. Storage of the current <br /> stockpiled soil on site was witnessed and approved by Charlie Hunt of the San Joaquin Local Health <br /> District Environmental Health Division. Additional soil will be stockpiled in a similar manner. <br /> TASK 6: REPORT PREPARATION <br /> Groundwater Technology will prepare a letter report for submittal to the SJLHD summarizing the field <br /> activities. The report will include descriptions of all methodology, laboratory results, and plan drawings <br /> depicting former facilities and sampling locations. <br /> Groundwater Technology is prepared to begin work on this project immediately following approval of <br /> any required permits by the appropriate agencies. Please contact Groundwater Technology's West <br /> Sacramento office if you have questions or comments about this work plan. <br /> Sincerely, <br /> GROUNDWATER TECHNOLOGY, INC. <br /> TED M. GILLENWATERS SCOTT E. GABLE <br /> Field Supervisor Environmental Geologist <br /> Construction Services Manager Project Manager <br /> TMG/SEG:Io <br /> Attachments <br /> UPS-P03 i <br /> GROUNDWATER <br /> . _� TECHNOLOGY, INC. <br />