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,... _ �__ r. .. rr .. .._ �L�^ • - - :.may_ R, Up, <br /> LEED34iLL•NERY{£NN9FF.INC, <br /> t <br /> SITE INVESTIGATION WORKPLAN <br /> 102 SOUTH WILSON WAY <br /> STOCKTON, CALIFORNIA <br /> I. INTRODUCTION <br /> The following Site Investigation workplan describes LEEDSHILL-HE,RKENHOFF, Inc.' <br /> (LH) proposed site investigation assessment at a former underground fuel tank <br /> facility located at 102 South Wilson Way, Stockton, CA. An initial site <br /> assessment was conducted by Balbi & Chang Associates, Inc. in September of I988 <br /> without contacting or obtaining appropriate permits from the Public Health <br /> Services, San Joaquin County. Consequently, the initial site assessment had to <br /> be repeated and the results were presented in a Baibi & Chang report dated April <br /> 24, 1989. In these studies, 4 soil borings and 3 monitoring wells were <br /> installed. The April 1989 report indicated some detectable BTX&E (benzene, <br /> toluene, xylene and ethylbenzene) and TPH (total petroleum hydrocarbons as <br /> gasoline) in the soil and groundwater samples but the final conclusions contained <br /> conflicting information. LH was contracted in June of 1989 by the pro'essional <br /> corporation of Neumiller and Beardslee and requested to conduct an additional <br /> t site investigation to verify the presence or absence of soil or groundwater <br /> contamination arid, if necessary, determine the vertical and lateral extent of <br /> such contamination. <br /> The purpose of this report is to address and investigate the concerns of the <br /> RWQCB and the Public Health Services, San Joaquin County, regarding the presence <br /> or absence of petroleum hydrocarbon contamination in the soil and groundwater <br /> at this site. <br /> 1 <br />