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Geofogica(Techma Inc. <br /> 2741 XiverRoad <br /> Modeseo,Califomia 95351 ; <br /> (209)538-6424IFax#538-5852 <br /> 1 <br /> Work 'Plan J <br /> Site Characterization <br /> Former Moresco Property <br /> 16865 Gawne Road, <br /> Stockton, California <br /> Project No. 251.2 <br /> October 13, 1995 <br /> 1.0 INTRODUCTION <br /> On behalf of Mr. Michael McGranahan, trustee in bankruptcy, Geological Technics <br /> Inc. has performed environmental assessment work at the former Moresco Property <br /> located at 16865 Gawne Road in Stockton. <br /> The subject property had a 500 gallon capacity underground storage tank (UST) once <br /> used for residential automotive fuel 'supply. The UST was removed on November <br /> 15, 1994 and significant concentrations of gasoline range petroleum hydrocarbons <br /> were detected in a soil sample collected beneath the former tank cradle at depth of <br /> 17.5 feet below ground surfaces (bgs). This information was reported to the San <br /> Joaquin County Public Health ;Services Environmental Health Division <br /> (SJCPHSEHD) in the Geological Technics Inc. - Tank Removal Report, 16.865 Gawne- <br /> Road, dated December 9, 1994. k <br /> A subsurface investigation designed,to define the vertical and lateral extent of the <br /> impacted area was proposed in the Geological Technics Inc. Site Characterization <br /> Work Plan dated March 14, 1995. The Work Plan'was approved by the SJCPHSEHD <br /> on April 3, 1995. <br /> The subsurface investigation was conducted on April 5-7, 1995 and a remobilization <br /> occurred on April 21, 1995. The re'sults of this investigation suggested that the <br /> vertical extent was defined beneath the point of release but remained undefined to <br /> the north. This information was reported to the SJCPHSEHD in the Geological <br /> Technics Inc. Soil Boring Installation Report dated on May 12, 1995. <br />