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i <br /> 110 2nd Avenue South,#137,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> htty//www mccampbeil corn E-mail main cr mccampbell com <br /> Advanced GeoEnvironmental Client Project 1D Curtiss Pontiac Date Sampled 07/27/01 <br /> 837 Shaw Road Date Received 07/31/01 <br /> IStockton,CA 95215 Client Contact Brian Millman Date Extracted 07/31-08/03/01 <br /> [Client P O Date Analyzed 07/31-08103101 <br /> IGasoline Range(C6-C12)Volatile Hydrocarbons as Gasohne*,with Methyl tent-Butyl Ether* & BTEX* <br /> EPA methods 5030 modified 8015,and 8020 or 602,California RWQCB(SF Bay Region)method GC)'ID(5030) <br />' Lab ID Client ID Matrix TPH(g)+ MTBE Benzene Toluene Ethyl- Xylenes %Recovery <br /> benzene Surrogate <br /> 73775 MW1�072701 W ND ND ND ND ND ND 104 <br /> 73776 MW IB/ W 140,a ND 24 11 41 11 96 <br /> 072701 <br /> 73777 MW2A/ W ND ND ND ND ND ND 97 <br /> 072701 <br /> 73778 MW2B/ W ND ND ND ND ND ND 95 <br /> 072701 <br /> 73779 MW3/ W ND ND ND ND ND ND 100 <br />' 072701 <br /> 73780 MW4/ W ND ND 17 ND ND ND 97 <br /> 072701 <br /> 73781 MW51 W ND ND ND ND ND ND 103 <br /> 072701 <br /> 73782 MW6/ W ND ND ND ND ND ND 101 <br /> 072701 <br /> 73783 MW71 W ND ND ND ND ND ND 101 <br />' 072701 <br /> I <br />' Reporting Limit unless W 50 ug/L 5 0 05 0 5 0 5 05 <br /> otherwise stated,ND <br /> means not detected above <br /> the reporting limit S 10 mV'kg 0 05 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 />' "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 />' 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),t) <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,am tan, Lab Director <br />