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M <br /> MCCAMPBELL ANALYTICAL INC 110 2nd Avenue South,#137,Pacheco,CA 94553 <br /> Tele 510-798-1620 Fax 510-798-1622 <br /> The Mark Group Client Project ID #92-1177102, Stockton Date Sampled 04/04/96 <br /> H ookston Square,# 120 Scavenger <br /> Date Received 04/04/96 <br /> 3480 Buskirk Avenue Client Contact Bob Spare Date Extracted 04/04/96 <br /> Pleasant Hill,CA 94523 Client P O Date Analyzed 04/04/96 <br /> Diesel Range(C10-C23) Extractable Hydrocarbons as Diesel <br /> EPA methods modified 8015 and 3550 or 3510 California RW CS SF Ba Region)method GCFID 3550 or GCF1D 3510 <br /> Lab ID Client ID Matrix TPH(d)} % Recovery <br /> Surrogate <br /> 62974 MW-3 W ND 92 <br /> 62975 MW-2 W 320,d,g 96 <br /> 62976 MW-1 W ND 94 <br /> 62977 MW-4 W 89,c 94 <br /> Reporting Limit unless other- W 50 uglL <br /> wise stated,ND means not de- <br /> tected above the reporting limit S 10 mg/kg <br /> * water samples are reported in ug/L,soil samples in mg/kg,and all TCLP and STLC extracts in mg/L <br /> # cluttered chromatogram resulting in coeluted surrogate and sample peaks, or, surrogate peak is on elevated <br /> baseline,or,surrogate has been dimmished by dilution of original extract <br /> + The following descriptions of the TPH chromatogdram are cursory in nature and McCampbell Analytical is not <br /> responsible for their interpretation a) unmodified or weakly modified diesel is significant, b) diesel rangge <br /> compounds are significant,no recognizable pattern,c)aged dieseh is si ificant),d)gasoline range compounds <br /> are significant, e} medium boiling point pattern that does not match se -2f)(-2 f) one to a few isolated peaks <br /> resent,g)oil range compounds are significant,h)lighter than water immiscible sieen is present,i}liquid sample <br /> at <br /> eontains greaterthan_ 5 vol % sediment <br /> DHS Certification No 1644 �/� Edward Hamilton,Lab Director <br />