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Sequoia 81 ent.,r Ave Stell <br /> Sacvmeoto,CA 95834 <br /> iW Analytical (916)921-9600 <br /> FAX(916)921-0100 <br /> www.se9uoialabs.com <br /> Kleinfelder-Stockton Project: Gillies Trucking 5402548 <br /> 2825 East Myrtle Street Project Number. 37210 Reported: <br /> Stockton CA,95205 Project Manager: Dominic Annedondo 03/09/04 15:50 <br /> Total Metals by EPA 200 Series Methods- Quality Control <br /> Sequoia Analytical-Sacramento <br /> Reporting Spike Souris %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 4030040-EPA 3010A <br /> Blank(4030040-BLKI) Prepared&Analyzed:03/03/04 <br /> Hardness ND 1.0 mg/I <br /> Calcium ND 0.20 " <br /> Copper ND 0.0050 " <br /> Iron ND 0.010 " <br /> Magnesium ND 0.050 " <br /> Manganese ND 0.0050 " <br /> Potassium ND 0.50 " <br /> Sodium ND 0.20 " <br /> Zinc ND 0.0050 " <br /> Laboratory Control Sample(4030040-BS1) Prepared&Analyzed:03/03/04 <br /> Hardness 14.6 1.0 mg/l 16.5 88 80-120 <br /> Copper 0.821 0.0050 1.00 82 80-120 <br /> Iron 0.885 0.010 1.00 88 80-120 <br /> Manganese 0.827 0.0050 1.00 83 80-120 <br /> Zinc 0.859 0.0050 1.00 86 80-120 <br /> Matrix Spike(4030040-MSI) Source:S402432-04 Prepared&Analyzed:03/03/04 <br /> Hardness 41.4 1.0 mg/I 16.5 80 NR 80-120 Q-LIM <br /> Copper 0.811 0.0050 1.00 ND 81 80-120 <br /> Iron 1.35 0.010 1.00 0.23 112 80-120 <br /> Manganese 0.819 0.0050 1.00 ND 82 80-120 <br /> Zinc 0.842 0.0050 1.00 0.10 74 80-120 Q-LIM <br /> Matrix Spike(4030040-MS2) Source:5402548-01 Prepared&Analyzed:03/03/04 <br /> Hardness 259 4.0 mg/I 16.5 240 115 80-120 <br /> Copper 0.672 0.020 1.00 ND 67 80-120 Q-LIM <br /> Iron 0.728 0.040 1.00 ND 73 80-120 Q-LIM <br /> Manganese 0.676 0.020 1.00 ND 68 80-120 Q-LIM <br /> Zinc 0.730 0.020 1.00 ND 73 80-120 Q-LIM <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain <br /> of custody document. Unless otherwise stated,results are reported on a wet weight <br /> basis. This analytical report must be reproduced in its entirety. <br /> 7of13 <br />