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110 2nd Avenue South,#D7,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC 'Telephone 925-798-1620 Fax 925-798-1622 <br /> http//www mccampbell com E-mail main@mecampbell com <br />' Advanced GeoEnvironmental Client Project ID Curtis Pontiac Date Sampled 04/26/01 <br /> 837 Shaw Road Date Received 04/26/01 <br />' Stockton, CA 95215 Client Contact Brian Millman Date Extracted 04/26/01 <br /> Client P 0 Date Analyzed 04126-04/27/01 <br />' Diesel Range(C14-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 /> 66187 MW lA/042501 W ND 108 <br />' 66188 MW 1 B/042501 W 84,d 86 <br /> 66189 MW2A/042501 W ND 86 <br />' 66190 MW2B/042501 W ND 86 <br />' 66191 MW3/042501 W ND 103 <br /> 66192 MW4/042501 W ND 104 <br />' 66193 MW5/042501 W ND 102 <br /> 66194 MW6/042501 W ND 106 <br /> t66195 MW7/042501 W 130,g,b 105 <br /> 1 <br />' Reporting Limit unless otherwise W 50 ug/L <br /> stated,ND means not detected above <br /> the reporting limit S 10 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 I STLC I SPLP <br />' extract",ug/L <br /> A 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 dieseh is significant),d)gasoline range compounds are significant,e)medium boiling point pattern that does not match diesel ("), t) <br /> one to a few isolated peaks present, g)oil range compounds are significant, h) lighter than water immiscible sheen is present, i) liquid <br /> sample that contains greater than—5 vol %sediment <br />' DHS Certification No 1644 t Edward Hamilton,Lab Director <br />