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1 <br /> 110 Second Avenue South,#137,Pacheco,CA 94553-5560 <br />' MCCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> E-mail mam@mccampbell com <br />' AdvancedClient Pr Date Sampled 09/16/98 <br /> GeoEnvironmental Project ID Sierra <br />' 4005 North Wilson Way Date Received 09/17/98 <br /> Stockton,CA 95205 Client Contact Tun Cuellar Date Extracted 09/19-09/23/98 <br />' Client P O Date Analyzed 09/19-09/23/98 <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 RWQCB(SF Bay Region)method GCFID(5030) <br /> Lab ID Client ID Matrix TPH(g)+ MTBE Benzene Toluene Ethzeneen- Xylenes Recovery <br /> Surrogate <br />' 95233 MW-1/ W 15,000,a ND<50 2200 35 980 220 100 <br /> 9-16-9$ <br /> 95234 MW-2/ W 120,000,a 690 20,000 25,000 3700 19,000 100 <br />' 9-16-98 <br /> 95235 MW-3/ W ND ND ND ND ND ND 94 <br /> 9-16-98 <br /> 95236 MW-4A/ <br /> 9-16-98 W 140,000,a NIK27Q 15,000 39,000 4600 25,000 101 <br />' <br /> 95237 MW413/ W 12,000,a ND<20 310 240 530 2600 98 <br /> 9-16-98 <br /> 95238 MW-5/9-16-98 W ND ND ND ND ND ND 93 <br />' <br /> 95239 MW-6/ W 160,1 ND 33 083 085 092 96 <br /> 9-16-98 <br />' 95240 MW-7/9-16-98 W ND ND ND ND ND ND 96 <br /> I <br /> Reporting Limit unless W 50 ug/L so 05 05 05 05 <br /> otherwise stated,ND <br /> means not detected above <br /> the reporting limit S l O m8/kg 005 0 005 0 005 0 005 0005 <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 signifrcant(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)TPH pattern that does not appear to be derived from gasoline(9),f) <br /> one to a few isolated peaks present,g)strongly aged gasolme 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,i)no recognizable pattern <br /> IDHS Certification No 1644 11/ Edward Hamilton,Lab Director <br />