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' 819 Striker Avenue,Suite 8 <br /> Sequoia ento,CA 95834 921-9600 <br /> FAX(916)92 1-0100 <br /> Analytical w .sequolalabs.com <br /> Kleinfelder-Stockton Project: Elks Lodge S405069 <br /> 2825 East Myrtle Street Project Number: 42162 Reported: <br /> ' Stockton CA,95205 Project Manager: Joe Zilles 05/18/04 17:51 <br /> Total Metals by EPA 6000/7000 Series Methods - Quality Control <br /> ' Sequoia Analytical - Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> 'Batch 4050117-EPA 3010A <br /> Blank(4050117-BLKI) Prepared:05/10/04 Analyzed: 05/12/04 <br /> Antimony ND 0.050 mg/l <br /> 'Arsenic ND 0.050 <br /> Barium ND 0.050 <br /> Beryllium ND 0.0050 " <br /> Cadmium ND 0.0050 <br /> Chromium ND 0.0050 <br /> Cobalt ND 0.020 " <br /> 'Copper ND 0.0050 " <br /> Lead ND 0.050 11 <br /> Molybdenum ND 0.020 <br /> Nickel ND 0.020 " <br /> 'Selenium, ND 0.050 <br /> Silver ND - 0.0050 <br /> Thallium ND 0.050 " <br /> 'Vanadium ND 0.020 <br /> Zinc ND 0.0050 " <br /> Laboratory Control Sample(4050117-BSI) Prepared:05/10/04 Analyzed:05/12/04 <br /> 'Arsenic 0.945 0.050 mg/I 1.00 94 80-120 <br /> Cadmium 1.00 0.0050 1.00 100 80-120 <br /> Chromium 0.963 0.0050 1.00 96 80-120 <br /> Nickel 0.988 0.020 1.00 99 80-120 <br /> 'Zinc 1.01 0.0050 1.00 101 80-120 <br /> Matrix Spike(4050117-MS1) Source:S404563-01 Prepared:05/10/04 Analyzed:05/12/04 <br /> Arsenic 1.03 0.20 mg/I 1.00 ND 103 80-120 <br /> 'Cadmium 1.00 0.020 „ 1.00 ND 100 80-120 <br /> Chromium 0.970 0.020 1.00 ND 97 80-120 <br /> Nickel 0.998 0.080 1.00 ND 100 80-120 <br /> 'Zinc 1.02 0.020 1.00 ND 102 80-120 <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> ' custody document. Unless otherwise stated,results are reported on a wet weight basis. <br /> This analytical report must be reproduced in its entirety. <br /> ' M Page 15 of 24 <br />