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14 Sequoia 0-1 <br />Analytical <br />819 Striker Avenue, Suite 8 <br />Sacramento, CA 95834 <br />(916) 921-9600 <br />FAX (916) 921-0100 <br />www.sequoialabs.com <br />Kleinfelder - Stockton Project: Granite Bumpile <br />2825 East Myrtle Street Project Number: 20-1108-33 Reported: <br />Stockton CA, 95205 Project Manager: Doug Heard 09/04/01 10:47 <br />DI STLC CAM 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 1080299 - Title 22-STLC <br />Blank (1080299-BLKI) <br />Prepared: 08/27/01 Analyzed: 08/30/01 <br />Copper <br />ND <br />0.050 mg/l <br />Lead <br />ND <br />0.50 " <br />LCS (1080299 -BSI) <br />Prepared: 08/27/01 Analyzed: 08/30/01 <br />Copper <br />9.70 <br />0.050 mg/l <br />10.0 97.0 80-120 <br />Lead <br />10.3 <br />0.50 <br />10.0 103 80-120 <br />Matrix Spike (1080299 -MSI) <br />Source: S108259-01 <br />Prepared: 08/27/01 Analyzed: 08/30/01 _ <br />Copper <br />9.80 <br />0.050 mg/l <br />10.0 ND 98.0 80-120 <br />Lead <br />10.3 <br />0.50 " <br />10.0 ND 103 80-120 <br />Matrix_ Spike Dup (1080299MSD1) <br />_ Source: S108259-01 <br />Prepared: 08/27/01 Analyzed: 08/30/01 _ <br />Copper <br />9.75 <br />0.050 mg/l <br />10.0 ND 97.5 80-120 0.512 20 <br />Lead <br />10.3 <br />0.50 " <br />10.0 ND 103 80-120 0.00 20 <br />Sequoia Analytical - Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br />custody document. This analytical report must be reproduced in its entirety. <br />Page 3 of 4 <br />