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s <br /> Eke---1 itsAnee21M Assessment <br /> Moreland Court Shell <br /> 7700 Moreland court,Stockton,Callforula <br /> s Delta Project No,40.&8.146 <br /> Page 5 <br /> - i <br /> 3.0 RFSULTS OF THE SOIL,BORING IMMTIGA77ON, <br /> Two soil borings, 513-7 and SB-8 were advanced at the site on August 8,1989. The borings were located <br /> in areas where petroleum constituents had been detected in soil samples collected during excavation and <br /> removal of the former tanks and associated product lines. 'The analytical data from tank basin and product <br /> line samples are presented in Tables 2 and 3. 'fable 4 presents analytical data from the soil boring <br /> Y samples collected on August 8, 1989. Drilling and soil sampling methods and procedures are described <br /> in Section 5.0. <br /> Soil boring SB-7 was!ocated approximately 15 feet from product line sample lz,�Ation PL-5(Figure 2)and <br /> was advanced to a total depth of <br /> f 31.5 feet. G er was encountered at a ae th of a raximate! <br /> i ! <br /> -afeet below grade. Soil sample PLPS was collected during the tank closure activities at a depth of 4 feet <br /> below the ground surface and contained 1,130.0 parts per million (ppm) total petroleum hydrocarbons <br /> (TPH)as gasoline. Two roil samples from soil boring SB-7 were collected at 11.5 and 26.5 feet below <br /> grade and were submitted for chemical analysis. Chemical results indicated concentrations of T 1J.were <br /> below the detection limit of 0.2 ggm . <br /> Soil boring SB-8 was drilled within 5 feet of tank sample locations TS-2ana TS-6 and was advanced to <br /> a depth of 26.5 feet. Ground water was not encountered. Soil sample TS-2,collected at the base of the <br /> r, PH tank <br /> { I excavation, approximately 15 feet below the <br /> ground surface, contained 1,030.0 ppm 'rPH. Soil <br /> samples collected from soil boring S13-8 at 16.5 and 26.5 feet.below ground surface contained <br /> concentrations of TPH below th�detection limit of 0.1 ppm, <br /> � j <br /> -- <br />�� <br /> w - - - - - -- —.- - - - ----- ---- - -- ---- - -- <br /> a <br /> S <br /> } <br /> E <br />