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Mary Meays <br /> May 11, 1992 <br /> Page 3 <br /> During soil excavation, sods containing petroleum hydrocarbons were removed <br /> from the ground and stockpiled on site Based on an average of all confirmation <br /> and the quantity of soil excavated, BAI <br /> analytical tests completed during, excavationq ty <br /> estimates that approximately 890 kg (equivalent to 260 gallons) of diesel have been <br /> removed i his figure is subject to change based on full stockpile analysis that is <br /> anticipated as part of the stockpile remediation The material is presendy stockpiled <br /> on site pending deter urination of final remediation method <br /> Analytical Results <br /> Analytical results of groundwater from M-IN-1 and P-2 indicate non-detectable levels <br /> of TPH as diesel and BTEX in the groundwater as indicated in Table 1. These <br /> analytical results are consistent with previous analytical results front the <br /> inonitonng wecls <br /> Recommendations <br /> Quarterly gi oundwater monitoring should be continued in wells W- N-1 and P-2 <br /> The next quarterly monttoring report will be sub.—mt-ted by July 7, 19921 <br /> If you have any questions please call Mike Velzy at (415) 637-0170. <br /> Sincerely, <br /> Michael E. Ve zy <br /> Regional Manager, Environmental Services -�--- <br /> Thomas P Brursing Ph D, PE (Civil) <br /> ►��� to <br /> Principal _ o� 12 - <br /> JBB jbb <br /> Enclosures Table 1 <br /> Anaiyncal Data Sheets (April 30, 1992) <br /> • CC. 'See Attached I.ist <br /> BRUNSING ASSOCIATES, INC.40_`F` <br />