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110 2nd Avenue South,9137,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> 24 http//www mccampbell com E-mail main@mccampbell com <br /> Advanced GeoEnvironmental Client Project ID Flag City Chevron Date Sampled 02/04/02 <br /> 837 Shaw Road Date Received 02/05/02 <br /> Stockton, CA 95215 Client Contact Tun Cuellar Date Extracted 02/05/02 <br /> Client P O Date Analyzed 02/05/02 <br /> Diesel Range(CIU-C23) and Oil-Range (C18+)Extractable Hydrocarbons as Diesel and Motor Oil* <br /> EPA methods modified 80 15,and 3550 or 3510,California RWQCB(SF Bay Region)method GCFTD(3550)or GCFID(3510) <br /> Lab ID Client ID Matrix TPH(d)+ TPH(mo)+ %Recovery <br /> Surrogate <br /> 89612 Influent i W ND ND 90 <br /> 89613 Effluent W ND ND 94 <br /> Reporting Linut unless otherwise W 50 ug/L 250 ug/L <br /> stated,ND means not detected above <br /> the reporting limit S 10 mg/kg 5 0 mg/kg <br /> 'water samples are reported in ug/L,wipe samples in ug/wipe,soil and sludge samples in mg/kg,and all TCLP/STLC/SPLP extracts in <br /> ug/L <br /> "cluttered chromatogram resulting in coeluted surrogate and sample peaks,or surrogate peak is on elevated baseline,or,surrogate has been <br /> dirmnished by dilution of original extract <br /> `The following descnptions of the TPH chrotnatograrn are cursory in nature and McCampbell Analytical is not responsible for their <br /> interpretation a)unmodified or weakly modified diesel is significant,b)diesel range compounds are significant,no recognizable pattern,c) <br /> aged diesel?is significant),d)gasoline range compounds are significant,e)medium boiling point pattern that does not match diesel(9), f) <br /> one to a few isolated peaks present, g) oil range compounds are significant, h) lighter than water immiscible sheen is present, 1) liquid <br /> sample that contains greater than—5 vol %sediment. <br /> DHS Certification No 1644 Edward Hanrulton,Lab Director <br />