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1 <br /> 110 2nd Avenue South,#137,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> http//www mccampbell com E-mail main@mccampbell cam <br />' Advanced GeoEnvironmental Client Project ID Arco Mini Mart Date Sampled 04/26/00 <br /> 4005 North Wilson Way Date Received 04/27/00 <br />' Stockton,CA 95205 Client Contact Nuel Henderson Date Extracted 04/27-05/04/00 <br /> Client P O Date Analyzed 04/27-05/04/00 <br /> iGasoline 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(g)+ MTBE Benzene Toluene Ethylben- Xylenes %Recovery <br /> zene Surrogate <br /> 36494 MW10/004-26 W ND ND ND ND ND ND 100 <br />' 36495 MW20004-26- W ND 90 ND ND ND ND 100 <br /> 36496 MW30/004-26 W ND I0 ND ND ND ND 106 <br />' 36497 MW 00 <br /> W 280,a 71 54 1 2 69 96 101 <br /> 36498 MW X04-26- W 38,000,a 2000 310 490 2000 8300 96 <br /> 36499 MW 004 26- W 710,a 100 71 16 50 49 99 <br /> I • 36500 MW 004-26 W ND 110 ND ND ND ND 99 <br /> 36501 VW-1104- W 2900,a 81 62 63 91 160 98 <br /> 26-00 <br /> I <br /> I <br /> I <br /> IReporting Limit unless W 50 ug/L, 50 05 05 05 05 <br /> otherwise stated,ND <br /> means not detected above <br /> the reporting limit S 1 0 mg/kg 005 0 005 0 005 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 /> I "cluttered chromatogram,sample peak coelutes with surrogate peak <br /> 'The following descriptions of the TPH chromatogram are cursory in nature and McCamphell Analytical is not reepnnsible for their <br /> interpretation a) unmodified or weakly modified gasoline is significant, b) heavier gasoline range compounds are s.gnificant(aged <br /> gasoline ), 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)TPI I pattern that does not appear to be derived from gasoline(?),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 vol %sediment,j)no recognizable pattern <br /> I <br /> DHS Certification No 1644 Edward Hamilton, Lab Director <br /> I <br />