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-Vol <br /> 2. Collect two floor and minimum of three wall confirmation <br /> samples with excavator bucket. The wall samples will be <br /> collected at a depth of five feet above the bottom of <br /> the excavation with one taken for every twenty lineal <br /> feet of exposed face. The samples will be analyzed by <br /> B.C. Laboratories, a State certified laboratory, for <br /> benzene, toluene, ethylbenzene, and xylenes by EPA <br /> method 8020, and total gasoline petroleum hydrocarbons <br /> by EPA Method 8015. <br /> 3. All excavated soil will be placed over asphalt and <br /> covered with visquine until sample results are received. <br /> The excavated soils will be aerated under permit from <br /> the San Joaquin County Air Pollution Control District. <br /> The excavation will be backfilled with clean material <br /> and paved after all excavation is complete. <br /> The findings of the investigation for this area will be <br /> incorporated into the Problem Assessment Report for the <br /> additional investigations on tank A area on this property. <br /> We propose that a San Joaquin Public Health Services <br /> representative will be on-site during the re-excavation and that <br /> the exact location and number of soil samples to be collected <br /> will be determined in the field. <br /> If you have any questions or comment, please contact me at your <br /> convenience. ( 209 ) 838-3507. <br /> Respectfully, <br /> WaterWork <br /> Robert W. Juncal <br /> Senior Geologist <br /> RWJ/ms/ktt <br />