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404 N W19et Lane <br /> Sequoia Walnut Creek CA 94598' <br /> (925)988-9600 <br /> 1 4 FAX(925)988-9673 <br /> — Analytical - vwbw sequotalahs <br /> Gettler Ryan,Inc -Dublin Project Chevron <br /> 6747 Sierra Court Suite J Project Number Chevron#9-6171 ReportedT — <br /> Dublin CA,94568 Project Manager Deanna L Harding 12-Jun-01 07 52 <br /> Industrial Solvents by EPA Method 8015 (modified) - Quality Control n <br /> Sequoia Analytical - Morgan Hill <br /> Reporting Spike Source %REC RPD <br /> Analyte Result _ Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch I E31005-EPA 3810 Headspace x <br /> Blank(1E31005-BLKI) Prepared&Analyzed 31-May-01 o <br /> Methanol ND 1000 ug/l <br /> Surrogate 1 pentanol 5120 5000 102 55-157 <br /> Surrogate 1 pentanol(dbwax) 5490 5000 110 57-170 <br /> LCS(IE31005-BSI) Prepared&Analyzed 31-May-Ol <br /> Methanol 7950 1000 ug/l 8000 994 50-150 <br /> Surrogate 1-pentanol 4830 5000 966 55-157 <br /> Matnx Spike(1E31005-MSI) Source MKE0627-05 Prepared&Analyzed 31-May-Ol <br /> Methanol 7800 1000 ug/1 8000 ND 975 50-150 <br /> Surrogate 1 pentanol - 4700= 5000 - 940 55-157 <br /> Surnggale 1 pentanol(dbwaar) 4950 5000 990 57-170 • <br /> Matnx Spike Dup(IE31005-MSD1) Source MKE0627-05 Prepared&Analyzed 31-May-Ol <br /> Methanol 8160 1000 ug/l 8000 ND 102 50-150 451 50 <br /> Surrogate 1 pentanol 4760 5000 952 55-157 <br /> - Surrogate 1 pentanol(dbwas) 5020 '- — _ 5000 _ 100 57-170 <br /> Sequoia Analytical-Walnut Creek The results in thus report apply to the samples analyzed in accordance with the ch <br /> custody document Thrs analytical report must be reproduced in its enure y <br /> Page 12 of 13 <br />