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SUMMARY <br /> • i <br /> The distribution of petroleum constituents in soil beneath the site has been essentially defined and <br /> appears to be limited laterally to the immediate vicinity of the former tank pit. The highest <br /> concentrations are present between 10 and 20 feet bgs. Petroleum affected soil at this site <br /> generally attenuates rapidly with depth and is expected to degrade to nondetectable levels over <br /> time. <br /> Based on the available data, residual petroleum hydrocarbons at the project site would not be <br /> expected to adversely affect groundwater. Groundwater is estimated to be present at a depth of <br /> approximately 55 feet bgs and the site is paved. <br /> Smith Technology recommends no further action at this site. This site should be evaluated by <br /> PHS/EHD personnel for closure. <br /> If you have any questions or require additional information regarding this workplan, please <br /> contact us at (209) 579-2221. <br /> I <br /> Respectfully Submitted, <br /> Smith Technology Corporation <br /> Tom Lutterman, R.E.A. <br /> Project Geologist �QQg�FESSIQN�! <br /> JEANNE �y <br /> HONISEY <br /> Jeanne Homsey, P.E. No-C047410 <br /> Registered Engineer No. C47410 Exp. 9 <br /> CIVIL <br /> Attachments F of CAI\ <br /> PC: Mr. Robert Eggiman - Eggiman, Andrew and Edith Trust <br /> Regional Water Quality Control Board <br /> wA97736Vcportslsum.doc 4 <br />