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May 4, 1993 Project No. EK-6032-2 <br /> Document No. 9305-4002.RPT <br /> 1 of selected analyses. Due to the fact that the subject property is most likely not the source of the <br /> hydrocarbons, ESE feels that this information may provide the necessary data to determine the <br /> 1 source of the TPHG and oil and grease detected during this phase of work. <br /> ' Additionally, since TPHD was detected in the soil and groundwater surrounding the underground <br /> diesel tank at Thorsen Trucking,Inc., we recommend that the tank be removed and soil samples be <br /> 1 collected as part of the tank closure process. One of the three monitoring wells that was discussed <br /> earlier can be placed adjacent to the excavation. <br /> ' CLOSURE <br /> ' This report has been prepared for the exclusive use of The City of Stockton, Department of <br /> Housing and Economic Development, Economic Development.Division as it pertains to the <br /> property identified as APN 165-280-06, 07, 08, 09 &10, located on Turnpike Road in the city of <br /> 1 Stockton, CA. The findings and conclusions rendered in this report are opinions based on <br /> laboratory testing of soil and groundwater samples collected during this project. This report does <br /> 1 not reflect subsurface variations which may exist between sampling points. These variations <br /> cannot be anticipated nor can they be entirely accounted for even with exhaustive additional testing. <br /> ' All work has been performed in accordance with generally accepted practices in <br /> geotechnical/environmental engineering, engineering geology, and hydrogeology. No other <br /> warranty,either express or implied, is made. <br /> 1 <br /> Thank you for this opportunity to have been of service. If you have any questions regarding this <br /> 1 report or the information contained herein,please contact this office at your convenience. <br /> Sincerely, <br /> ' EARTH SYSTEMS ENVIRONMENTAL, INC. <br /> aaaw � <br /> Allan john Fetko Lawrence D. Pavlak, C.E.G. 1187 <br /> 1 Project Manager Senior Geologist <br /> E A pgG�pG' <br /> ' t N° 1187 <br /> CERTIFIED <br /> ' ENGINEERING <br /> 7 T GEOLOGIST \P <br /> �� OF <br /> 1 ' <br />