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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 /> h"//www mccampbell com E-mail main@mccampbell com <br />' Advanced GeoEnviromnental Client Project ID West Clay Properties Date Sampled 12/18/00 <br /> 4005 North Wilson Way Date Received 12/18/00 <br />' Stockton, CA 95205 Client Contact Paul Dotson Date Extracted 12/18/00 <br />' Client P O Date Analyzed 12/18-12/27/00 <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 1D Matrix TPH(d)+ %Recovery <br /> Surrogate <br /> 56287 MW1/12-18-00 W 280,d,b 104 <br />' 56288 MW2/12-18-00 W 1700,d 100 <br />' 56289 MW3/12-18-00 W ND 94 <br /> 56290 MW4/12-18-00 W ND 102 <br />' 56291 MW5/12-18-00 W ND 98 <br /> 56292 MW6A/12-18-00 W ND 104 <br />' • 56293 MW6B/12-18-00 W ND 101 <br /> 56294 MW7/12-18-00 W ND 86 <br />' 56295 MWS/12-18-00 W ND 89 <br /> 56296 MW8/12-18-00 W ND 89 <br />' 56297 MW9/12-18-00 W 98,b 103 <br />' 56298 MWIO/12-18-00 W 18,000,a 94 <br /> 56299 MW11A/12-18-00 W ND 105 <br />' 56300 MW1113/12-18-00 W 130,b 95 <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/STLC/SPLA <br /> extracts in ug/L <br /> 0 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 follovong 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 diesel?is significant),d)gasoline range compounds are significant,e)medium boiling point pattern that does not match diesel(9),f) <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 Edward Harmhon,Lab Director <br />