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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 /> http//www mccampbell_com E-mail main@mccampbell com <br /> Advanced GeoEnvironmentaI Client Project ID Curtiss Pontiac Date Sampled 11/18-11/19/99 <br /> 4005 North Wilson Way Date Received 11/24/99 <br /> IStockton, CA 95205 Client Contact Bill Little Date Extracted 11/24-11129/99 <br /> [Client P 0 Date Analyzed 11/24-11/29/99 <br /> IGasoline Range(C6-C12)Volatile Hydrocarbons as Gasoline*,with Methyl Cert-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 Ethen en- Xylenes %Recovery <br /> ze Surrogate <br /> 26264 MW4-5 S 940,a ND<0 20 9 6 9 8 20 48 --- <br />' 26265 MW4-10 S ND ND ND ND ND ND 99 <br /> 26267 MW7-30 S ND ND ND ND ND ND 85 <br /> 26268 MW7-42 S ND ND ND ND ND ND 98 <br /> Reporting Limit unless W 50 ug/L 50 0 5 05 05 05 <br /> otherwise stated,ND <br /> means not detected above <br /> the reporting limo g g S l O m /k 0 05 0 005 0 005 0 005 0 005 <br /> I <br /> "water and vapor samples are reported in ug/L,wipe samples in ug/wipe,soil and sludge samples in mgA.g,and all TCLP and SPLP extracts <br /> in ug1L <br /> "cluttered chromatogram,sample peak coelutes with surrogate peak <br /> 'The following descriptions of the TPH chromatogram are cursory in nature and McCampbeli Analytical is not responsible for the r <br /> interpretation a) unmodified or weakly modified gasoline is significant, b) heavier gasoline range compounds are significant(aged <br /> gasolme')), 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'),c)TPH pattern that does not appear to be derived from gasoline(1),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 />