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1455 McDowell Blvd. North, Ste. D <br />Sequoia Petaluma, CA 94954 <br />FAX (707) 792-1865 <br />(707) 792-0342 <br />Analytical www.sequoialabs.com <br />Cambria Environmental Project: Equiva I Od <br />270 Perkins St. Project Number: 880 Victor Rd. Lodi, Ca Reported: <br />Sonoma CA, 95476 Project Manager: Aubrey Cool 12/29/00 10:17 <br />Total Metals by EPA 6000/7000 Series Methods - Quality Control <br />Sequoia Analytical - Petaluma <br />Reporting Spike Source %REC RPD <br />Analyte Result limit Units Level Result %REC Limits RPD Limit Notes <br />Batch 0110700 - EPA 7471A <br />Blank (0110700-BLK1) <br />Prepared: 12/04/00 Analyzed: 12/05/00 <br />Mercury <br />ND 0.00604 mg/kg <br />LCS (0110700 -BSI) <br />Prepared: 12/04/00 Analyzed: 12/05/00 <br />Mercury <br />0.131 0.00626 mg/kg <br />0.125 105 80-120 <br />Matrix Spike (0110700 -MSI) <br />Source: P011735-01 <br />Prepared: 12/04/00 Analyzed: 12/05/00 <br />Mercury <br />7.72 0.123 mg/kg <br />0.123 7.64 65.0 75-125 QM4X <br />Matrix Spike Dup (0110700-MSDI) <br />Source: P011735-01 <br />Prepared: 12/04/00 Analyzed: 12/05/00 <br />Mercury <br />7.67 0.114 mg/kg <br />0.114 7.64 26.3 75-125 0.650 20 QM4X <br />Sequoia Analytical - Petaluma 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 14 of 23 <br />•.: <br />