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Sequoia an I al Road <br /> san caretslosCA 94070 <br /> i�D�► Analytical FAX(650)2332-9600 <br /> (650)232-9612 <br /> www sequoialabs com <br /> Gettler-Ryan/Geostrategies(1) Project Unocal(4) <br /> 6747 Sierra Court, Suite J Project Number Former Unocal#5098,Stockton Reported <br /> Dublin CA,94568 Project Manager Deanna Harding 07/01/02 07 46 <br /> Total Purgeable Hydrocarbons by DHS LUFT - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %REC RPD - <br /> Analyte Result Luntt Units Level Result %REC Lanits RPD Lunt Notes <br /> Batch 2060232-EPA 503013(P/T) <br /> LCS Dup(2060232-BSD2) - Prepared&Analyzed 06/18/02 <br /> Purgeable Hydrocarbons 240 50 ug/! 250 96 70-130 1 25 <br /> Surrogate a a a-Trifluorotoluene 115 100 115 60-140 <br /> Batch 2060241. -EPA 503013(P/T) <br /> Blank(2060241-BLK1) Prepared&Analyzed 06/19/02 <br /> Purgeable Hydrocarbons ND 50 ug/l <br /> Surrogate a,a,a-Trifluorotoluene 999 100 100 60-140 <br /> LCS(2060241-BS2) Prepared&Analyzed 06/19/02 <br /> Purgeable Hydrocarbons 239 50 ug/l 250 96 70-130 <br /> Surrogate a,a,a-Triuorotoluene 103 100 103 60-140 <br /> LCS Dup(2060241-BS_D_2_) __Prepared&Analyzed 06/19/02_ <br /> Purgeable Hydrocarbons 251 50 ug/l 250 100 70-130 5 25 <br /> Surrogate a,a,a-Trifluorotoluene 10.5 100 105 60-140 <br /> e <br /> Sequoia Analytical- San Carlos The results to this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must he reproduced in its entirety <br /> Page 100 of 103 ' <br />