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r Sequoia 1551 Industria]Road <br /> San Carlos CA 94070 <br /> '" ► (650)232-9600 <br /> Analytical <br /> FAX(650)232-961 <br /> www sequoialabs cam <br /> kbIm <br /> ler-Ryan/Geostrategies(1) Project Unocal(4) <br /> 7 Sierra Court,Sulte] Project Number Former Unocal#15098&Montgmery Ward Reported <br /> ICA,94568 Prosect Manager Deanna Harding 03/26/02 12 44 <br /> Total Purgeable Hydrocarbons by DHS LUFT- Quality Control <br /> Sequoia Analytical - San Carlos <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> tatch 2030040-EPA 5030B (PIT <br /> Blank(2030040-BLKI) Prepared&Analyzed 03/16/02 <br /> urgeable Hydrocarbons as Gasoline ND 50 ug/1 <br /> urrogate a a a-Tri luorotoluene 122 JOG 122 60-140 <br /> LCS(2030040-BSI) Prepared&Analyzed 03/16/02 <br /> urrogate a a a-Trtfluorotoluene 124 ug/l JOG 124 60-140 <br /> LCS(2030040-BS2) Prepared&Analyzed 03/16/02 <br /> urgeable Hydrocarbons as Gasoline 260 50 ugll 250 104 70-130 <br /> urrogate a a a-Trtfluorotoluene 129 11 100 129 60-140 <br /> Matrix Spike(2030040-MSI) Source L203015-23 Prepared&Analyzed 03/16/02 <br /> urgeable Hydrocarbons as Gasoline 275 50 ug/1 250 ND 110 60-140 <br /> Surrogate a a a-Trtfluorotoluene 126 11 100 126 60-140 <br /> ix Spike Du (2030040-MSDI) Source L203015-23 Pre ared&Analyzed 03/16/02 <br /> ]e Hydrocarbons as Gasoline 277 50 ug/l 250 ND 1]] 60-140 0 725 25 <br /> urrogate a a a-Trtfluorotoluene 113 100 123 60-140 <br /> i <br /> a Analytical - San Carlos The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced to its entirety <br />' Page 80 of 91 <br />