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• <br /> i <br /> Gettler-Ryan/Geostrategies(1) Project Unocal(4) <br /> 6747 Sierra Court,Suite J Project Number Former Unocal SS#0123 Reported <br /> Dublin CA,94568 Project Manager Deanna Harding 04/04/01 13 15 <br /> Industrial Solvents by EPA Method 8015 (modified)- Quality Control <br /> Sequoia Analytical- Morgan Hill <br /> Reporting Spike Source %REC RPD <br /> Analyte Result limit Units IL-41 Result %RSC limits RPD limit Notes <br /> Batch ID03006-EPA 3810 Headspace <br /> Blank(1D03006-BLKI) Prepared&Analyzed 04/03/01 <br /> Methanol ND 1000 ug/1 <br /> Surrogate 1 pentanol 5800 " 5000 116 55-157 <br /> Surrogate 1 pentanol(dbwax) 4710 " 5000 942 57-170 <br /> LCS(1D03006-BSI) Prepared&Analyzed 04/03/01 <br /> Methanol 6160 1000 ugn 8000 - 770 50-150 <br /> Surrogate 1 pentanol 5340 5000 107 55-157 <br /> Surrogate !pentanol(dbwax) 4710 5000 942 57-170 <br /> Matrix Spike(1D03006-MSI) Source L103137-08 Prepared&Analyzed 04/03/01 <br /> Methanol 12000 1000 urA 8000 ND 150 50-150 <br /> Surrogate !pentanol 5770 5000 115 55-157 <br /> Surrogate 1 pentanol(dbwax) 5660 " 5000 113 57-170 <br /> Matrix Spike Dup(lD03006-MSDI) Source:L103137-08 Prepared&Analyzed 04/03/01 <br /> Methanol 10600 1000 ug/l 8000 ND 133 50-150 124 50 <br />—Surrogate I pentanol 5830 " 5000 117 55-157 <br /> Surrogate 1 pentanol(dbwax) 4250 " 5000 850 57-170 <br /> Sequoia Analytical- San Carlos The results in this report apply to the samples analyzed in accordance with the chain o <br /> custody document Thos analytical report must be reproduced to its ennrety <br /> Page 22 of 27 <br />