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Regional Office <br /> INTERNATIONAL 4585 Pacheco Boulevard <br /> TECHNOLOGYMartinez,California 94553-2233 <br /> CORPORATION November 26, 1997 510-372-9100 <br /> Fax:510-372-5220 <br /> IT Project No. 770932 <br /> Mr. Michael P. Kith <br /> San Joaquin County Environmental Health Division <br /> V, , <br /> te� E <br /> P.O. Box 388 <br /> 304 East Weber Avenue, Third Floor 5 1997 <br /> Stockton, CA 95202 <br /> 0. <br /> Underground Storage Tank Replacement Project <br /> Pacific Bell Property <br /> 907 Lincoln Road; Stockton, CA <br /> Dear Mr. Michael Kith: <br /> IT Corporation (M was retained by Pacific Bell to oversee the removal of one underground <br /> storage tank (UST) from the above referenced property on August 6, 1997. IT collected <br /> verification soil samples from the tank excavation and beneath the concrete vault formerly <br /> containing the tank piping, the results of which indicated no detectable petroleum hydrocarbon <br /> concentrations. Analysis of composite soil samples collected from the tank overburden material, <br /> however, revealed the presence of minor diesel fuel concentrations. The 200 yd' of overburden <br /> material was disposed offsite and clean material was emplaced in the excavation, surrounding the <br /> new replacement tank. Based on these results, it appears that this is a "soils only" case, and the <br /> impacted material has been removed and disposed. Therefore, site closure is requested as no <br /> further actions are warranted in association with the removal of the UST. <br /> Please notify Pacific Bell of the case closure in writing for their files. If you have any questions <br /> or comments, you may contact me at (510) 372-5292. Thank you for your assistance in this <br /> matter. <br /> Sincerely, <br /> Sydney Geels <br /> Project Manager <br /> cc: Irene Soto - Pacific Bell <br /> Mark Edgar - Pacific Bell <br /> c.\sydney\pbstock.cv1 <br /> TT Corporation is a wholly owned subsidiary of International Technology Corporation <br />