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I <br /> 404 N Wiget lane <br /> Walnut Geek,CA 94598 <br /> Sequoia (925)988-9600 <br /> 4 FAX(925)988-9673 <br /> Analytical _ www setluoialaln corn <br /> Gettler Ryan,Inc -Dublin Project Chevron <br /> 6747 Sierra Court Suite J Pr0)ect Number Chevron ll 9-2033 Reported <br /> Dublin CA 94568 Project Manager- Deanna L Harding 15-Jun-01 10 47 <br /> Dissolved Metals by EPA 200 Series Methods - Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Li nut Units Level Result %REC Limits RPD Lunt Notes <br /> Batch IF02003-200 7 <br /> Blank(IF02003-BLK1) Prepared 02-Jun-01 Analyzed 05-Jun-01 <br /> Cadmium NO 0 010 mg/1 <br /> Chromium ND 0 010 <br /> Lead ND 0 020 " <br /> Nickel ND 0 010 " <br /> Zinc ND 0 020 " <br /> LCS(1F02003-BSI) Prepared 02-Jun-01 Analyzed 05-Jun-01 <br /> Cadmium 0 978 0 010 mg(l 100 978 80-120 <br /> Chromium 100 0 010 100 100 80-120 <br /> 1.ead 0 976 0 020 100 976 80-120 <br /> Nickel 106 0 010 100 106 80-120 <br /> 0 998 0 020 100 998 80-120 <br /> 0S Dup(1F02003-BSD1) Prepared 02-Jun-01 Analyzed 05-Jun-01 <br /> Cadmium 0 958 0 010 mg/1 100 958 80-120 207 20 <br /> Chromium 0 993 0 010 100 993 80-120 0 702 20 <br /> Load 0 948 0 020 100 948 80-120 291 20 <br /> Nickel 106 0 010 100 106 80-120 000 20 <br /> Zinc 0 985 0 020 100 985 80-120 131 20 <br /> Matrix Spike(IF02003-MS1) Source W105406-02 Prepared 02-Jun-01 Analyzed 05-Jun-01 <br /> Cadmium 0 971 0 010 mg/I 100 NO 971 80-120 <br /> Chromium 0 952 0 010 100 NO 952 80-120 <br /> Lead 0 910 0 020 100 NO 910 80-120 <br /> Nickel 105 0 010 100 NO 105 80-120 <br /> Zinc 109 0 020 100 0 12 970 80-120 <br /> Matrix Spike Dup (IF'02003-MSD1) Source W105406-02 Prepared 02-Jun-01 Analyzed 05-Jun-01 <br /> Cadmium — 0 952 0 010 m811 100 ND 952 80-120 198 20 <br /> Chromium 0 945 0 010 100 NO 945 80-120 0 738 20 <br /> L.cad 0 907 0 020 100 NO 907 80-120 0 330 20 <br /> Nickel 0 974 0 010 100 NO 974 80-120 751 20 <br /> Zinc 108 0 020 100 012 960 80-120 0 922 20 <br /> uoia Analytical-Walnut Creek The results in this report apply To the samrpies analyzed in accordmice with the churn of <br /> custody document This analytical report must be reproduced in as entirety <br /> Page 16 of 24 <br />