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Op <br />A <br />:-f1ZJ AW—Akff AIRFNVAftu <br />Working To Restore Nature <br />Based upon the current analytical results and previous investigations RESNA believes that impacted <br />soil has been removed to the maximum possible extent without causing structural damage to the <br />existing building and does not recommend further soil investigation <br />Groundwater <br />Laboratory analyses of water samples collected from site monitoring wells have not exhibited <br />detectable levels of petroleum constituents since the initial sampling in March 1991 (0 6 ppb xylenes <br />in MW2) This would suggest groundwater underlying the site is not significantly impacted <br />Excavation sampling results indicate that localized groundwater contamination may exist where the <br />groundwater interfaces remaining impacted soils However, the relatively low transmisslvity of the <br />soil types impede movement of dissolved hydrocarbons No further action is recommended <br />If you have any questions or comments please call our office at (209) 838-3507 <br />Respectfully, <br />RESNA Industries, Inc <br />Marcie R McCabe <br />Project Geologist <br />Jeri Lane <br />Project Manager <br />Gregory P Stahl <br />CA Registered Geologist No 5023 <br />Attachments <br />PC Zona Corrigan <br />Lee Helms <br />SXR1293 DRF <br />5 <br />