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Mr Chuck Carmel <br /> September 13, 1994 <br /> Page 2 <br /> 4 <br /> I <br /> laboratory detection limas in some of the soil samples The range of identified concentrations <br /> was 5 1 milligrams per kilogram (mg/kg) in the sample collected from 16-16 5 feet in <br /> borehole V-8 to 220 mg/kg in the sample collected from 16-16 5 feet in borehole V-12 <br /> Concentrations of TPH were not identified in any of the samples collected from 20 feet below <br /> ground surface <br /> During drilling, soil samples were collected for lithologic identification The descriptions of <br /> the soils encountered were recorded on borehole logs A copy of the borehole log for each <br /> borehole is included with this report as Appendix C Based on the borehole logs, the <br /> lithology encountered during the installation of these wells is consistent with soil encountered <br /> dunng previous investigations <br /> The drill cuttings generated dunng drilling were sampled and analyzed for BTEX, TPH, STLC <br /> lead, corrosivity, ignitability, and reactivity The laboratory report for the stockpiled soil is <br /> included with this report as Appendix D The soil was stockpiled on and covered with plastic <br /> sheeting Upon receipt of laboratory results, BC forwarded the stockpile sample results to <br /> Dillard Trucking Company of Byron, California Dillard Trucking Company, on_behalf of <br /> ARCO,-wlii-properly dispose of this sail The water used for steam cleaning the drilling <br /> equipment was placed in 55-gallon drums and stockpiled on site The steam cleaning water <br /> was disposed of by Integrated Waste Management1 <br /> If you have any questions, please contact me at (916) 444-0123 <br /> Sincerely, <br /> BROWN AND CALDWELL <br /> leve Misner <br /> Jay Lucas <br /> Program Manager California Registered Geologist #4301 <br /> SM JCL kc <br /> Enclosures <br /> cc Ms Laurie Cotulla, San Joaquin County, Public Health Services <br /> Mr. Matt Turner, Brown and Caldwell <br /> 5061C0RRESP1154601 U2 <br /> QMS•PS4I0 <br />