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110 Second Avenue South,#1137,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> E-mail main@mccampbell com <br /> Date Sampled 06/15/98 <br /> Advanced GeoEnvnonmental Client Project ID #0128,Arco <br /> 4005 North Wilson Way Date Received 06/17/98 <br />' Stockton,CA 95205 CIient Contact Bill Little Date Extracted 06/19-06/25/98 <br /> Lientpo Date Analyzed 06119-06/25/98 <br /> Oxygenated Volatile Organics By GUMS <br /> EPA method 8260 modified <br /> Lab ID 90589 90590 90591 90592 <br />' <br /> Client ID MWS/6-15- MW6/6-15- MW7/6-15- VW1/6-15- Reporting Limit <br /> 98 98 98 98 <br /> Matrix W W W W S W <br /> 1 Compound Concentration* ug/kg ug/L <br />' Di-isopropyl Ether(DIPS) ND<20 ND ND ND 50 10 <br />' Ethyl tert-Butyl Ether(ETRE) ND<20 ND ND ND 50 1 0 <br /> Methyl-tert Butyl Ether(MTBE) 1300 930 92 530 50 1 0 <br /> 4 tert-Amyl Methyl Ether(TAME) ND<20 ND ND ND 50 10 <br />' tert-Butanol ND<200 ND 22 ND 25 50 <br />' Surrogate Recoveries(%) <br /> Dtbromofluoromethane 112 111 114 113 <br />' Comments <br />' *water samples are reported in ug/L,sod and sludge samples in ug/kg,wipes to ug/wtpe and all TCLP/STLC/SPLP extracts in ug/L <br /> ND means not detected above the reporting limit,NIA means surrogate not applicable to this analysis <br /> (h)lighter than water immiscible sheen is present,(i)liquid sample that contains greater than--5 vol %sediment,0)sample diluted due to <br /> high organic content <br /> 1 , <br /> DHS Certification No 1644 Edward Hamilton,Lab Director V11 , <br /> ,•r <br />