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0 0 <br /> Sample ID Depth volatile Pb <br /> Below Hydrocarbons <br /> Tank (ft) (rng/kg) img/kg) <br /> 3 East 0 230 14.8 <br /> 3 <br /> 3E-3 3 6300 4.7 <br /> 3E-6 6 260 1.1 <br /> 4 <br /> i <br /> i <br /> 3E-7 ? 10 2.1 <br /> As mentioned earlier, the contaminated soil was removed and <br /> z aerated over a two day period to reduce volatile organic levels below <br /> 1000 mg/kg. As confirmed by additional soil analysis, eeration was <br /> successful when tests of random soil samples revealed contamination <br /> r levels of 183 and 20 mg/kg. <br /> z <br /> t� <br /> . o Waste Disposal <br /> (1) Tank Water Contents-- Following approval, pumped to the <br /> municipal water treatment plant. <br /> (2) Contaminated Soils-- derated on-site to reduce corrltamination <br /> levels from 8300 to less than 1000 mg/kg. <br /> l`3) Tank Cleaning Fluids-- Transported by Erickson Inc. to the IT <br /> Class I landfill in Nartinez. <br /> (4) Cleaned Tanks-- Recycled for scrap metal by Emery's Backhoe <br /> Service. <br /> OCT 4 1989 <br /> Page-4 <br /> EPTVIRONMENTAL HEA1. <br /> PERMVSERVICEc <br />