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110 2nd Avenue South,#D7,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1520 Fax 925-798-1622 <br />' 44 h1M//www mccampbell corn E-mail math@mccampbell com <br />' Advanced GeoEnvironmental Client Project ID West Clay Properties Date Sampled 07/13/00 <br /> 4005 North Wilson Way Date Received 07/14/00 <br />' Stockton, CA 95205 Client Contact Tony Mikacich Date Extracted 07/14/00 <br /> Client P O Date Analyzed 07114-07120/00 <br /> Diesel Range(C10-C23)Extractable Hydrocarbons as Diesel* <br /> EPA methods modified 8015,and 3550 or 3510,California RWQCB(SF Bay Region)method GCFID(3550)or GCFID(3510) <br />' Lab ID Client ID Matrix TPH(d)+ %Recovery <br /> Surrogate <br /> 42941 MW-1/07-13-00 W 340,d,h 117 <br />' 42942 MW-9/07-13-00 W 74,b 115 <br /> 42943 MW-10/07-13-00 W 13,000,a,h 98 <br />' <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 ug/wipe,soil and sludge samples in mg/kg,and all TCLP/STLC/SPLP <br /> ' extracts in ug/L <br /> u 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 followtng descnpbuns of the TPH chromatogram are cursory m nature and 1vlcCampbell Analytical is not responsible for their <br /> interpretation a)unmodified or weakly modified diesel is significant,b)dtesel range compounds are significant,no recognizable pattern c) <br /> aged dieseh is significant),d)gasoline range compounds are significant,e)medium boiling point pattern that does not match diesel (v),fj <br /> one to a few isolated peaks present, g) oil range compounds are significant, h) lighter than water imrruscible sheen is present, i) liquid <br /> ' sample that contains greater than—5 vol %sediment <br /> Edward Hamilton,Lab Director <br /> DHS Certification.No 1644 <br /> 1 <br />