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GROUND ZERO Art.Ot'SIS, INC, � <br /> 1714 Main Street <br /> EsWw,California 95320-1927 <br /> Telephone:(x09)838-9888 <br /> Fars mile:(209)838-9853 Q <br /> May 8, 2002 <br /> Mr. Sam Savig <br /> San Joaquin County Environmental Health Department 'f <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, CA 95202 <br /> Subject: Souza II LLC, 612 West 11a`Street, Tracy, California <br /> Site Corte 1283 <br /> Dear Mr. Savig: <br /> I am writing to memorialize our telephone conversation last week regarding your letter dated April 18, <br /> 2002 wherein you requested a workplan to further investigate the extent of soil and groundwater <br /> contamination at the subject site. <br /> As we discussed, Ground Zero Analysis, Inc. (Ground Zero) feels it is premature to initiate additional <br /> drilling based upon a single round of groundwater sampling and analysis. As you know, a certain <br /> amount of "smearing" of contamination during drilling can result in low levels of petroleum <br /> hydrocarbon constituents in the initial groundwater sample collected after well development. <br /> Therefore as we discussed, Ground Zero proposes to collect confirmation groundwater samples from <br /> site wells as soon as possible to confirm groundwater conditions beneath the site. A summary report <br /> will be prepared to present the results and to include recommendations for additional investigation, if <br /> appropriate. The summary report will also include the results of a sensitive receptor and conduit <br /> survey as you requested. Ground Zero will submit a report as soon as possible upon completion of <br /> field activities, but in no case later than July 15, 2002. <br /> None feet fiee to mcffi -, at-(2" <br /> Respectfully, <br /> Ground Zero Analysis, Inc. <br /> V�—W, <br /> John P. Lane <br /> CA Registered Geologist 6795 <br /> cc: Mr. Marty Hartzell, CVRWQCB <br /> Mr. Patrick D. Riddle,Esq. <br /> Mr. Michael Souza, Souza H LLC <br /> (3..\IWa1GROUNDZE15ouzalcarespWvig050802.doc <br />