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74 '+�4 <br /> 9 <br /> GROUND ZERO ANALYSIS,INC. - <br /> 1714 Maus,Street <br /> Escalon,Califonua 95320-1927 <br /> Telephone (209)838-9888 <br /> Facssm le (209)838-9883 <br /> UU <br /> MAY 2 5 1999 <br /> May 20, 1999 ENVIRONMENTAL HEALTH <br /> PERMIT/SERVICES <br /> Ms Lon Duncan <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, CA 95202 <br /> Subject Subsurface Investigation Summary Report <br /> 640 N El Dorado Street, Stockton, California <br /> Site Code 1090 <br /> Dear Ms Duncan <br /> Ground Zero Analysis, Inc (Ground Zero) submits this Subsurface Investigation Summary Report <br /> on behalf of Mr Gene Gabbard to summarize subsurface investigation activities conducted at the <br /> subject property(Figure 1) <br /> 1.0 INTRODUCTION <br /> 1.1 Purpose <br /> The purpose of this investigation was to investigate the lateral and vertical extent of soil <br /> contamination and to determine if groundwater has been impacted by an unauthorized release of <br /> waste oil from the former underground storage tank(UST) located at the facility <br /> 1.2 Limitations <br /> This assessment was performed utilizing methods and procedures consistent with good <br /> commercial or customary practices designed to conform to acceptable industry standards The <br /> independent conclusions represent Ground Zero's best professional judgement based on the <br /> conditions that existed and the information and data available to us during the course of this <br /> assignment Factual information regarding operations, conditions, and test data provided by the <br /> . Client, owner, or their representative have been assumed to be correct and complete <br /> groundzelgabbardlsumrpt doc <br />