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Sequoia Walnut Creek CA 94 98 <br /> (925)988-9600 <br /> Analytical FAX(9Z5) 73 <br /> sequolalert*alahs c a_om <br /> Gettler Ryan,Inc -Dublin Project Chevron <br /> 6747 Sierra Court Suite J Project Number Chevron 49-2033 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 29-Jun-00 16 29 <br /> Dissolved Metals by EPA 200 Series Methods - Quality Control <br /> Sequoia Analytical - Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Lunn Notes <br /> Batch OF13006-200 7 <br /> Blank(OF13006-BLK1) Prepared 13-Jun-00 Analyzed 16-Jun-00 <br /> Cadmium ND 0 010 mg/I <br /> Chromium ND 00100 " <br /> Lead ND 00200 <br /> Nickel ND 00100 <br /> Zinc, ND 00100 " <br /> LCS(OF13006-BSI) Prepared 13-Jun-00 Analyzed 16-Jun-00 <br /> Cadmium 0 990 0 010 mg/I 100 990 80-120 <br /> Chromium too 00100 100 100 80-120 <br /> Lead 1 00 00200 too 100 80-120 <br /> Nickel 0 960 00100 too 960 80-120 <br /> Zmc 110 00100 100 110 80-120 <br /> LCS Dup (OF13006-BSD1) Prepared 13-Jun-00 Analyzed 16-Jun-00 - <br /> Cadmium 0 960 0 010 mg/1 1 00 960 80-120 308 20 — it <br /> Chromium 0 990 00100 11100 990 80-120 101 20 <br /> Lead—-- —— ——1 00 0 0200 —---1 00---- --- —100— —80-120-- --0 - —20— <br /> Nickel 100 00100 100 100 80-120 408 20 <br /> Zinc 110 00100 100 110 80.120 0 20 <br /> Matrix Spike(OF13006-MSl) Source W006087-14 Prepared 13-Jun-00 Analyzed 16-Jun-00 <br /> Cadmium 100 0010 mg/l 100 ND 100 80-120 <br /> Chrome un 1 10 00100 100 ND 110 80-120 <br /> Lead 110 00200 100 ND 110 80.120 <br /> Nickel 110 00100 100 ND 110 80-120 <br /> Zinc 110 00100 100 00510 105 80-120 <br /> Matrix Spike Dup (OF13006-MMM) Source W006087-14 Prepared 13-Jun-00 Analyzed 16-Jun-00 <br /> Cadmium 100 0010 mg/1 100 ND too 80-120 0 20 <br /> Chromium _ 100 00100 100 ND L00 80-120 952 20 _ <br /> Lead 100 00200 100 ND too 80-120 952 20 <br /> Nickel 100 00100 100 ND 100 80-120 952 20 <br /> Zinc 110 00100 too 00510 105 80-120 0 20 <br /> Sequoia Analytical -Walnut Creek The results in tins report apply to the samples analyzed in accordance with the chain of <br /> custody documem This analytical report must be reproduced to its entir"O <br /> Page 13 of 21 <br />