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MPBELL ANALYTICAL INC 110 2nd Avenue South,#D7,Pacheco,CA 94553 Tele.510-798-1620 Fax:510-798-1622 Environmental Science&Eng Client Project ID #6925400,Former Delta Date Sampled 06/13/96 4090 Nelson Ave ,Suite J Truck Date Received 06/14196 Concord,CA 94520 Client Contact Dave Blunt Date Extracted 06/14/96 Client P O #SMSA-C-021 Date Analyzed 06!14-06/17/96 Diesel Range(CIO-C23)Exftctzble Hydirocorhons res IlDlesel EPA methods modified 8015 and 3550 or 3510 Caldornia RW CB SF Ba Re on method GCFID 3550 or GCF1D 3510 Lab ID Client ID Matrix TPH(d)+ %Recovery Surrogate 65915 5-1 S 2700,a,d 99 65916 5-2 S 4600,d,a 100 65917 5-3 S 5600,a,d 100 65918 5-4 S 16,000,a,d 101 65919 5-5 S 2100,a,d 101 65920 5-6 S 230,a 102 65921A 5-7A S ND 100 65921B 5-7B S ND 99 65922 5-8 S 3100,a 100 65923 5-9 S 3200,a,d 101 65924 5-10 S 60,a 100 65925 5-11 S 14,a 99 65927 5-12 5 S ND 100 Reporting Limit unless other- W 50 ug/L wise stated,ND means not de- tected above the reporting limit S 1.0 mg/kg °water samples are reported in ugIL,soil samples in mg/kg,and all TCLP and STLC extracts in mg/L # cluttered chromatogram resultmg in coeluted surrogate and sample peaks,or, surrogate peak is on elevated baseline,or;surrogate has been diminished by dilution of original extract + The following descriptions of the TPH chromatogram are cursory in nature and McCain bell Analytical is not responsible for their interpretation a) unmodified or weakly modified diesel is siccant; b) diesel range compounds are significant,no recognizable ppattern,c)aged diesel?is si cant),d)gasoline range compounds are significant, e) medium boiling point pattern that does not match iesel 4?) fl one to a few isolated peaks present,g)oil ran a compounds are significant,h)lighter than water immiscib a s�.een is present,i)liquid sample that contains gree er than-- 5 vol % sediment DHSCertificationNo 1644 /y Edward Hamilton,Lab Director