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Mr. Darrel! Robinson <br /> Shill Oil Company <br /> April 19, 1988 <br /> Page Two <br /> IAWIJ <br /> Total Organic Vapors in Parts Per Million <br /> from soil samples <br /> Sample Depth <br /> -Ja__EWL <br /> �B-4 <br /> 5- 6.5 0 <br /> 0 <br /> 10-11.5 0 1 <br /> 15-16.5 0 1 <br /> 20-21.5 <br /> 0 <br /> 0 0 2 <br /> Notes:--Soil <br /> sample not taken <br /> SOiI samples collected from soil borings B-1 <br /> the site is underlain <br /> log"of the Soil borings. attachments <br /> by approximately 20 feet Of clayey silt to sandy silt, see at ch <br /> through B-6 indicate <br /> ments for geologic <br /> U The Soil borings were not grouted as all soil borings were, within <br /> areas and the Preliminary screening indicated the soils we, clean,Planned excavation <br /> The results Of this pre-tank pull soil an. <br /> collected assessment indicate the soil samples that w re <br /> at specific intervals at the six soil boring locations did not detect <br /> Presence of hydrocarbons and tio <br /> recommended that,during excavar <br /> the <br /> that e,*4cava 11 can Proceed. San Joaquin Co <br /> Of the soil borings., ion Of the tanks,the excavatio unty has <br /> Delta recommends that a geologist be on site <br /> n include the location <br /> the tanks when they are removed for Proper closure. to sample beneath <br /> Sincerely, <br /> DELTA ENVIR <br /> ONMENTAL CONSULTANTS, INC. <br /> v.: <br /> Michael J 0,'rie1 <br /> n <br /> i, <br /> Project Manager <br /> MJO.rc <br /> cc, Tod D. Christenson <br /> St.,Paul <br /> Office <br />