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110 Second Avenue South,#D7,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br />' htip I/www mccampbell co m E-mail main@mccampbell com <br /> i <br />' Advanced GeoEnvironmental Client Project ID West Clay Properties Date Sampled 08/26-08/27/98 <br /> 4005 North Wilson Way Date Received 08/28/98 <br />' Stockton, CA 95205 Client Contact Kevin McKibben Date Extracted 08/28/98 <br /> Client P O Date Analyzed 08/28-08/31/98 <br />' Diesel Range(C10-C23) Extractable Hydrocarbons as Diesel <br /> EPA methods modified 8015,and 3550 or 3510,California RWQCB(SF Bay Region)method GCF1D(3550)or GCF1D(3510) <br />' Lab ID Client ID Matrix TPH(d)+ %Recovery <br /> Surrogate <br /> 94282 MW6-30 S ND 110 <br />' 94283 MW6-45 S ND 110 <br /> 94284 MW7-20 S ND 110 <br />' 94285 MW7-25 S ND 110 <br /> 94286 MW7-30 S ND 110 <br /> 1 94287 MWS-30 S ND 111 <br /> 94288 MW8-45 S ND 104 <br /> 1 <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 /> " nater and vapar 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 /> "cluttered chromatogram resulting in coeluted surrogate and sample peaks,or,sutTogate peak is on elevated baseline,or,surrogate has been <br /> diminished by dilution of onginal 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 recogntzable pattern,c) <br /> aged diesel9 is significant),d)gasoline range compounds are significant,e)medium boiling point pattern that does not match diesel (9),f) <br /> r one to a few isolated peaks present, g)oil range compounds are significant, h)lighter than water immiscible sheen is present i) liquid <br /> 'l sample that contains greater than--5 vol %sediment <br /> DHS Certtficanon No 1644 z�—1 Edward Hamilton,Lab Director <br />