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110 Second Avenue South,#137,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> ft//www mccamnbell corn E-mail main@mccampbell com <br /> Date Sampled 11/10/98 <br /> Advanced GeoEnvironmental Client Project ID Flag City Chevron <br /> Date Received 11/12/98 <br /> 4005 North Wilson Way <br /> Stockton, CA 95205 Client Contact Tim Cuellar Date Extracted 11112-11113/98 <br /> Client P O Date Analyzed 11112-11/13/98 <br /> Oxygenated Volatile Organics By GUMS <br /> EPA method 8260 modified <br /> Lab ID 98509 98510 98511 <br />' <br /> Cheat 1D MW6A/1 1- MW6B111- MW7/1 l-]0- <br /> Reporting Limit <br /> 10-98 10-98 98 <br /> Matrix W W W S W <br />' Compound Concentration* ug/kg uglL <br />' Di-isopropyl Ether(1)1PE) ND ND ND 50 10 <br /> Ethyl tert-Butyl Ether(ETBE) ND ND ND 50 1 0 <br /> Methyl-tert Butyl Ether(MTBE) ND 40 17 50 1 0 <br /> tert-Amyl Methyl Ether(TAME) ND ND ND so 1 0 <br /> Itert-Butanol ND ND ND 25 so <br /> Surrogate Recoveries(%} <br /> Dibromofluoromethane 99 102 102 <br /> Comments <br /> *water samples are reported to ug/L,soil and sludge samples in uglkg,wipes in ughsipe and all TCLP/STLC!SPLP extracts to ug/1- <br /> ND <br /> g/LND means not detected above the reporting limit.NIA means surrogate not applicable to this analysis <br /> (h)lighter than Nater immiscible sheen is present,(r)liquid sample that contains greater than—5 vol %sediment,0)sample diluted due to <br /> high organic content <br /> DHS Certification No 1644 /1f Edward Hamilton, Lab Director <br />