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GROUND ZERO ANALYSIS, INC. <br /> 1714 Main Street lz ; <br /> Escalon, California 95320 <br /> Telephone: (209)838-9888 <br /> Facsimile: (209)838-9883 , <br /> RECEIVED' <br /> f <br /> JUN 141999 � <br /> June 14, 1999 <br /> ENVIRONMENTAL HEALTH <br /> j PERMIT/SERVICES <br /> Mr. Michael Infurna � <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, CA 95202 <br /> Subject: Workplan for Subsurface Investigation <br /> 330 E. Kettleman Ln, Lodi, California if , <br /> Site Code: 2267 <br /> 3i <br /> Dear Mr. Infuma: <br /> This letter report is submitted to present a proposed workplan toconduct a subsurface investigation at the <br /> subject site(Figure 1)in accordance with correspondence from your office dated April 19, 1999. <br /> The general .scope of work will consist of drilling and sampling two soil borings in the vicinity of the <br /> former fuel dispenser (UST) to investigate the verticall( and lateral extent of residual soil <br /> contamination, and preparing a technical report that summarizes the methods and results of the <br /> investigation. j <br /> BACKGROUND <br /> 3 <br /> The site is currently operated as a Tour Bus facility. The 'facility previously utilized one 10,000- <br /> gallon UST and one 12,000-gallon UST for storage of diesel fuel. The USTs and associated <br /> hardware were removed under permit from San Joaquin County Public Health Services, <br /> Environmental Health Division (PHS/EHD) on November 12', 1998. Soil samples collected beneath <br /> the tanks contained no hydrocarbon constituents above laboratory detection limits, except for the ! <br /> sample collected from beneath the west side of Tank 1 at 14{feet below ground surface (bgs), which I <br /> contained 30 parts per million (ppb) total petroleum hydroca3rbons as diesel (TPHd). However, soil <br /> samples collected beneath the fuel TPHd at 13,000 parts per#11ion (ppm) and xylenes at 3.1 ppm. <br /> Analytical results are summarized in Table 1. l <br /> I <br /> taylor\reports\wp0699.doc <br />