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L <br /> El <br /> 41674 CHRISTY STREET • FREMONT,CA 94538-3114 " <br /> TELEPHONE:(415)659-0404 • FAX:(415)651-4677 R <br /> CONTR. LIC. NO.464324 <br /> 1 <br /> March 14, 1988 NA� <br /> San Joaquin Local Health District <br /> P.O. Box 2009 <br /> Stockton, CA 95201 <br /> Attn: Mr. Dan Moe <br /> Re: Proposed Work Scope for Soil Sampling Plan of Native Soil at <br /> City of Stockton's Smith's Canal Pumping Plant Copy Exceltech Project No. 2423D <br /> Dear Mr. Moe: <br /> This letter presents our work plan to drill one (1) exploratory boring and collect a soil <br /> sample for analysis at the City of Stockton's Smith's Canal Pumping Plant. The purpose of the <br /> sampling is to ascertain whether soil contamination has occurred near a 5,000 gallon diesel <br /> tank at the site. It is our understanding that Mr Jim Escabar (City of Stockton) has been in <br /> contact with you and that the San Joaquin Local Health District (SJLHD) requires one (1) <br /> native soil sample to be collected. <br /> One exploratory boring will be drilled adjacent to the tank location. It is our understanding <br /> that a SJLHD representative will advise the drill crew of the boring location on-site. Soil <br /> samples will be collected at five foot intervals during drilling using a modified California <br /> sampler equipped with brass liners. Samples will be logged, sealed with foil, capped, and <br /> packed on ice for transport to an analytical laboratory. Disposal of drill cuttings is the client's <br /> (City of Stockton) responsibility. The borehole will be backfilled with a SJLHD approved <br /> grout mix upon completion. <br /> The lowermost sample from the boring (collected in native soil) will be analyzed for total <br /> extractable hydrocarbons (diesel compounds) at a state-certified analytical laboratory using <br /> EPA-approved methods. Exceltech will prepare a brief letter report complete with sample <br /> location, a brief borehole log, and a copy of the chemical analysis report. It is our <br /> understanding that the boring location is easily accessible and not obstructed by overhead <br /> wires and underground lines. <br /> A drilling date will be designated when the permit is approved. We will advise you of the date <br /> when it is confirmed. <br /> BRANCH OFFICE. 17882 GEORGETOWN LANE • HUNTINGTON BEACH,CA 92647-7146 9 PHONE(714(842-3999 • FAX(714(842-6368 <br />