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110 2nd Avenue South,#137,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br />' ham.//www.mcca=bell.com E-mail main®mccampbell corn <br />' Advanced GeoEnvironmentai Client Project ID West Clay Properties Date Sampled 10/19-10/21/99 <br /> 4005 North Wilson Way Date Received 10/26/99 <br />' Stockton, CA 95205 Client Contact Kevin McKibben Date Extracted 10/26/99 <br />' Client P O Date Analyzed 10/27-10/31/99 <br /> Diesel Range(ClO-C23)Extractable Hydrocarbons as Diesel * <br /> EPA methods modified 8015,and 3550 or 3510,California RWQCB(SF Bay Region)method GCFID(3550)or GCF1D(3510) <br />' Lab ID CUent ID Matrix TPH(d)+ %Recovery <br /> Surrogate <br /> 24100 814-35 S ND 116 <br />' 24101 B14-50 S 2 2,d 100 <br />' 24102 B 14-55 S ND 99 <br /> 24103 B 15-50 S ND 113 <br />' 24104 B15-65 S ND 98 <br /> 24105 B15-75 S ND 101 <br /> 24106 B16-35 S 2 6,b 100 <br /> 24107 B 16-40 S ND 111 <br />' 24108 B16-60 S ND 113 <br />' 24109 MW9-20 S ND 111 <br /> 24110 MW9-30 S ND 113 <br />' 24111 MW945 S ND 113 <br /> Reporting Limit unless otherwise W 50 ug/L <br />' stated,ND means not detected above <br /> the reporting limit S 1 0 mg/kg <br /> *water and vapor samples are reported in ug/L,wipe samples in ugl ape,soil and sludge samples to mg/kg,and all TCLP/STLC/SPLP <br />' extracts in ug/L <br /> "cluttered chromatogram resulting in coeluted surrogate and sample peaks,or,surrogate peak is on elevated 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 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 diesel9 is significant),d)gasoline range compounds are significant,e)medium boiling point pattem that does not match diesel (9),f) <br /> one to a few isolated peaks present, g) oil range compounds are significant, h) ]tghler than water immrscrble sheen is present, t) liquid <br /> sample that contains greater than—5 vol %sediment <br /> DHS Certification No 1644 t yy I h Edward Hamilton,Lab Director <br />