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110 Second Avenue South,#D7,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC. Telephone:925-798-1620 Fax :925-798-1622 <br /> 4 http://wAw,mccampbell.cgIl1 E-mail:main@mccampbell.com <br /> Advanced GeoEnvironmental Client Project ID: ]imco Truck Stop Date Sampled: 09/15/98 <br /> 4005 North Wilson Way Date Received: 09/16/98 <br /> Stockton,CA 95205 Client Contact:Bill Little Date Extracted: 09/16/98 <br /> Client P.O: Date Analyzed: 09/16/98 <br /> Diesel Range(C10-C23)Extractable Hydrocarbons as Diesel* <br /> EPA methods modified 8015,and 3550 or 3510;California RWQCB(SF Bay Region)method GCFID(3550)or GCFID(3510) <br /> Lab ID Client ID Matrix TPH(dy %Recovery <br /> Surrogate <br /> 95105-06 SP4-1-2 S 3.7,b 99 <br /> 95107-08 SP4-34 S ND 96 <br /> 95109-10 SP4-5-6 S ND 98 <br /> 95111-12 SP4-7-8 S ND 97 <br /> 95113-14 SP4-9-10 S 1.l,b 98 <br /> 95115-16 SP4-11-12 S ND 97 <br /> Reporting Limit unless otherwise W 50 ug/L <br /> stated;AID means not detected above <br /> the reporting limit S 1.0 mg/kg <br /> *water and vapor samples are reported in ug/L,wipe samples in ug/,A*,soil and sludge samples in mg/kg,and al]TCLP/STLC/SPLP <br /> extracts in ug/L <br /> cluttered chromatogram resulting in coeluted surrogate and sample peaks,or;surrogate peak is on elevated baseline,or;surrogate has been <br /> diminished by dilution of original extract. <br /> 'The following descriptions of the TPH chromatogram are cursory in nature and McCampbell Analytical is not responsible for their <br /> interpretation:a)unmodified or weakly modified diesel is significant;b)diesel range compounds are significant;no recognizable pattern;c) <br /> aged diesel?is significant);d)gasoline range compounds are significant;e)medium boiling point pattern that does not match diesel(?),f) <br /> one to a few isolated peaks present; g)oil range compounds are significant;h)lighter than water immiscible sheen is present; i) liquid <br /> sample that contains greater than—5 vol_%sediment <br /> DHS Certification No. 1644 Edward Hamilton,Lab Director <br />