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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 />' http//wwwmEanTbellcorn E-mail main@mccampbell com <br /> Advanced GeoEnvironmental Client Project ID Arco Mini Mart Date Sampled 04129-05/01198 <br /> 4005 North Wilson Way Date Received 05/02/98 <br />' Stockton, CA 95205 Client Contact Bill Little Date Extracted 05/04/98 <br /> Client P O Date Analyzed 05/04-05/08/98 <br /> Diesel Range(CIO-C23)Extractable Hydrocarbons as Diesel <br /> EPA methods modified 8015,and 3550 or 3510,California RWQCB(SF Bay Region)method GCF1D(3550)or GCFID(3510) <br />' Lab iD Client ID Matrix TPH(d)+ %Recovery <br /> Surrogate <br /> 88817 B 17-50 S ND 98 <br />' 88818 B18-60 S ND 98 <br /> 88819 B19-60 S ND 98 <br />' 88820 B19-35 S ND 98 <br />' 88822 B18-35 S ND 98 <br />�I <br /> I <br />' Reporting Limit unless otherwise W 50 ug/L <br /> stated,ND 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/wipe,soil and sludge samples in mglkg,and all TCLP 1 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 diesels 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 /> I ' <br />