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110 Second Avenue South,#D7,Pacheco,CA 94553-5560 <br /> McCAWBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br />' 24 htlp//www mccampbell, E-mail main@mccampbell com <br /> Advanced GeoEnvtronmental Client Project ID Arco Mint Mart <br /> Date Sampled 04/29-05/01/98 <br /> 4005 North Wilson Way Date Received 05/02/98 <br />' Stockton, CA 95205 Client Contact Bill Little Date Extracted 05103-05106198 <br /> Client P O Date Analyzed 05/03-05/06/98 <br />' Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasoline*,with Methyl tert-Butyl Ether* &BTEX* <br /> EPA methods 5030,modified 8015,and 8020 or 602,California RWQCB(SF Bay Region)method GCFID(5030) <br /> Lab ID Client ID Matrix TPH(gr MTBE Benzene Toluene Ethylben- Xylenes %Recovery <br />' zene Surrogate <br /> 88813 B13-60 S ND --- ND ND ND ND 95 <br /> t88814 B14-50 S ND --- ND ND ND ND 96 <br /> 88815 B15-50 S ND --- ND ND ND ND 95 <br />' 88816 B16-40 S ND --- ND ND ND ND 101 <br /> 88817 B17-50 S ND - ND ND ND ND 98 <br /> t88818 B18-60 S ND --- ND ND ND ND 102 <br /> 88819 B19-60 S N11 --- ND ND ND ND 101 <br /> 88820 B19-35 S ND --- ND ND ND ND 102 <br /> 88822 B18-35 S ND --- ND ND ND ND 98 <br /> t <br /> Reporting Limit unless py 50 ug/L 50 05 05 05 05 <br /> otherwise stated,ND <br /> means not detected above S 1 0 mg/kg <br /> the reporting limit 005 0 005 0005 0 005 0 005 <br /> *water and vapor samples are reported in ug/L,wipe samples in ug/wipe soil and sludge samples in mg/kg,and all TCLP and SPLP extracts <br /> in ug/L <br />' "cluttered chromatogram,sample peak coelutes with surrogate peak <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 gasoline is cigmticant b) heavier gasoline range compounds are significant(dged <br /> t gasohne9), c) lighter gasoline range compounds (the most mobile fraction) are significant, d) gasoline range compounds having broad <br /> chromatographic peaks are significant,biologically altered gasoline" e)TPH pattern that does not appear to be derived from gasoline(9),f) <br /> one to a few isolated peaks present,g)strongly aged gasoline or diesel range compounds are significant h)lighter than water immiscible <br /> sheen is present i)liquid sample that contains greater than--5-,ol %sediment,j)no recognizable pattern <br /> DHS Certification No 1644 Edward Hamilton, Lab Director <br /> 1 <br />