Laserfiche WebLink
Ce0togi aI ToChnics W. <br /> 1101 71".Street <br /> Modesto,California 95354 <br /> r (209)5223119/Fax#522-4227 <br /> i..i <br /> Report - <br /> L <br /> Soil and Groundwater Investigation <br /> Cardoza Enterprises <br /> 1151 Louise Avenue <br /> Manteca, CA <br /> Project No. 1135.2 <br /> June 15, 2004 <br /> 1.0 INTRODUCTION <br /> In November of 2002 soil samples were obtained from beneath the gasoline dispenser <br /> islands at the site. A minor amount of MTBE (0.09 mg/kg) was detected in soil sample "D- <br /> 3". <br /> In a letter dated October 17, 2003, Cardoza Enterprises was directed by San Joaquin County <br /> Environmental Health Department to submit a work plan Ao determine the vertical and <br /> horizontal extent of the contamination (see Figures 1 & 2). <br /> This report summarizes the soil and groundwater investigative work conducted on May 3, <br /> 2004. Geological Technics Inc. (GTI) 'installed three (3) GeoProbe boreholes (GP-1 <br /> through GP-3) to determine if soil or groundwater has been impacted with gasoline range <br /> petroleum hydrocarbons. Soil and groundwater samples were collected for laboratory <br /> analysis. <br /> r 2.0. SCOPE OF INVESTIGATION <br /> 2.1 GeoProbe Installation <br /> _ In an effort to detennine if soil or groundwater has been impacted with gasoline.range <br /> petroleum hydrocarbons, three (3) soil borings were advanced to a depth of 24-25 feet <br /> below ground surface (bgs). 'The boreholes were drilled with truck mounted GeoProbe <br /> r assembly, owned and operated by V&W Drilling (C57# 720904) from Isleton, California. <br /> L•� The borehole locations were chosen for. proximity to the dispenser sample "D-3" that <br /> contained trace MTBE (0.090 mg/kg). See Figure 2 for borehole locations. <br /> The borehole locations were modified in the field due to underground utilities. Prior to <br /> initiating work. Mr.. Ray Hellstrom, .Engineering Technician for .the South San Joaquin <br />