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110 2nd Avenue South,#D7,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> ' 44 h //www mecam bell com E-mail main@mccampbell com <br /> I <br /> Advanced GeoEnvironmental Client Project ID Local Food Store Date Sampled 05/31/01 <br /> 837 Shaw Road Date Received 06/01/01 <br /> ' Stockton, CA 95215 Client Contact Bill Little Date Extracted 06101-06104101 <br /> Client P 0 Date Analyzed 06101-06/04/01 <br /> Gasoline Range(C&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 /> i ' Lab ID Client ID Matrix TPH(g)+ MTBE Benzene Toluene Ethyl- Xylenes %Recovery <br /> benzene Surrogate <br /> 68795 MW-1 W ND 69 ND ND ND ND 100 <br /> ' 68796 MW-2 W 74,a 750 3 0 ND ND 0 53 103 <br /> 68797 MW-3 W ND ND ND ND ND ND 100 <br /> ' 68798 MW-4 W 1600,a 2100 250 49 43 100 102 <br /> ' Reporting Limit unless W 50 ug/L 5 0 05 0 5 0 5 0 5 <br /> otherwise stated,ND <br /> means not detected above <br /> the reporting limit S 1 0 mgllcg 005 0 005 0 005 0 005 0 005 <br /> ' *water and vapor samples are sported 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 <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 significant, b) heavier gasoline range compounds are significant(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 gasoline9,e)TPII 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 vol %sediment,j)no recognizable pattern <br /> ' DHS Certification No 1644 Edward Hamilton,Lab Director <br />