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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 1/www mccampbell conn E-mail main@mccampbell conn <br /> IAdvanced GeoEnvironmental Client Project ID Cherokee Truck Stop Date Sampled 12/27/99 <br /> 4005 North Wilson Way Date Received 12/28/99 <br /> IStockton, CA 95205 Client Contact Kevin McKibben Date Extracted 12/28/99 <br /> I Client P O Date Analyzed 12/28-01/02/00 <br /> Diesel Range(C10-C23)Extractable Hydrocarbons as Diesel * <br /> EPA methods modified 8015,and 3550 or 3510,California RVQ QCB(SF Bay Region)method GCF1D(3550)or GCFID(3510) <br />' Lab ID Client ID Matrix TPI-1(d)+ %Recovery <br /> Surrogate <br /> 28282 UST-2112-27-99 W ND 103 <br />' 28283 UST-3/12-27-99 W ND 94 <br />' 28284 UST-4112-27-99 W 59,b,g 98 <br /> 28285 UST-5112-27-99 W 140,b 102 <br />' 28286 UST-6/12-27-99 W ND 108 <br /> I <br /> 1 <br /> Reporting Limit unless others%ise W 50 ug/L <br />' dated,ND means not detected abose <br /> the reporting limit S 1 0 mg/kg <br /> "%kater and vapor samples are reported in ug/L,a ipe samples in ugAkipe soil and sludge samples in me'Lg and all TC1 P!STLC/SPLP <br />' extracts in ug/L <br /> cluttered chromatogram resulting in coeluted surrogate and sample peaks,or,surrogate peak is on eleN.ited baseline or surrogate has been <br /> diminished by dilution of original extract <br />' The following descriptions of the TPH chromatogram are cursory in nature and McCimphell Analytical is not responsible for their <br /> interpretation a)unmodified or s,.eakly modified diesel is significant b)diesel range compounds are significant no recognizable pattern,c) <br /> aged dieser is significant) d)gasoline range compounds are significant e)medium boiling point pattern that does not match diesel (')), f) <br /> one to a few isolated peaks present, g) oil range compounds are significant, h) lighter than water immiscible sheen is present i) liquid <br /> sample that contains greater than--5 vol %sediment <br /> DHS Certification No 1644 JVIA—Edward Hamilton, Lab Director <br />