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' 110 2nd Avenue South,#137,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br />' http//www mccam2bell com E-mail main@mccampbell com <br />' Advanced GeoEnvironmental Client Project ID Stockton Plating Date Sampled 06/23/99 <br /> 4005 North Wilson Way Date Received 06/24/99 <br />' Stockton,CA 95205 Client Contact Bill Little Date Extracted 06/26-06/30/99 <br /> Client P O Date Analyzed 06/26-06/30199 <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 RW B SF BayRe ton method GCFID 5030 <br /> I Lab ID Client ID Matrix TPH(g)+ MTBE Benzene Toluene Ethylben- Xylenes %Recovery <br /> zene Surrogate <br /> 14167 MW-4 W ND ND ND ND ND ND 106 <br />' 14168 VW-2 W 81,b ND<10 ND 068 ND 12 105 <br /> 14169 MW-5 W ND ND ND ND ND ND I03 <br />' 14170 VW-4 W 240,a ND<10 19 25 66 44 106 <br /> 14171 MW-6 W 38,O00,a ND<200 2300 800 1400 6200 104 <br /> I14172 VW-1 W 160,O00 a ND<1900 21,000 36,000 3300 16,000 104 <br /> I14173 VW-3 W 7000,a ND<100 990 720 160 330 104 <br /> Reporting Limit unless W 50 u L 50 05 05 05 05 <br /> otherwise stated,ND <br /> means not detected <br />' above the reporting S 10 mg/kg 005 0 005 0 005 0 005 0 005 <br /> limit <br /> *water and vapor samples are reported to 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 /> 0 cluttered chromatogram,sample peak coelutes with surrogate peak <br /> 'The following descriptions of the TAH 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 sign ificant(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?,c)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 eresent,r liquid sample that contains greater than—5 vol %sediment no recognizable pattern <br /> DNS Certification No 1644 Edward Hamilton, Lab Director <br />