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Sequoia <br />1455 McDowell Blvd. North, Ste. D , <br />Petaluma, CA 94954 <br />Analytical <br />(707) 792-1865 <br />FAX (707) 792-0342 <br />www.sequoialabs.com <br />Cambria Environmental Project: Equiva <br />270 Perkins St. Project Number: 880 Victor Rd., Lodi, CA Reported: <br />Sonoma CA, 95476 Project Manager: Aubrey Cool 12/12/0011:01 <br />Total Metals by EPA 6000/7000 Series Methods - Quality Control <br />Sequoia Analytical - Petaluma <br />Reporting Spike Source °/6REC IRPD <br />Analyte Result limit Units Level Result %REC Limits RPD Limit Notes <br />Batch 0110673 - EPA 3050B <br />Blank (0110673-BLKI) <br />Prepared: 12/05/00 Analyzed: 12/08/00 <br />Cadmium <br />ND <br />1.00 <br />mg/kg <br />Chromium <br />ND <br />1.00 <br />" <br />Lead <br />ND <br />7.50 <br />" <br />Nickel <br />ND <br />3.00 <br />" <br />Zinc <br />ND <br />2.00 <br />" <br />LCS (0110673 -BSI) <br />Prepared: 12/05/00 Analyzed: 12/08/00 <br />Cadmium <br />4.90 <br />1.00 <br />mg/kg <br />5.00 98.0 80-120 <br />Chromium <br />49.0 <br />1.00 <br />n <br />50.0 98.0 80-120 <br />Lead <br />48.3 <br />7.50 <br />50.0 96.6 80-120 <br />Nickel <br />49.8 <br />3.00 <br />50.0 99.6 80-120 <br />Zinc <br />52.4 <br />2.00 <br />50.0 105 80-120 <br />Matrix Spike (0110673-MS1) <br />Source: P011656-05 <br />Prepared: 12/05/00 Analyzed: 12/08/00 <br />Cadmium <br />3.95 <br />0.820 <br />mg/kg <br />4.10 ND 96.3 75-125 <br />Chromium <br />53.7 <br />0.820 <br />41.0 14.7 95.1 75-125 <br />Lead <br />64.5 <br />6.15 <br />" <br />41.0 29.8 84.6 75-125 <br />Nickel <br />48.8 <br />2.46 <br />41.0 15.5 81.2 75-125 <br />Zinc <br />117 <br />1.64 <br />41.0 87.0 73.2 75-125 <br />QM -07 <br />Matrix Spike Dup (0110673-MSDI) <br />Source: P011656-05 <br />Prepared: 12/05/00 Analyzed: 12/08/00 <br />Cadmium <br />3.89 <br />0.758 <br />mg/kg <br />3.79 ND 103 75-125 <br />1.53 <br />20 <br />Chromium <br />51.3 <br />0.758 <br />" <br />37.9 14.7 96.6 75-125 <br />4.57 <br />20 <br />Lead <br />67.0 <br />5.68 <br />37.9 29.8 98.2 75-125 <br />3.80 <br />20 <br />Nickel <br />47.5 <br />2.27 <br />" <br />37.9 15.5 84.4 75-125 <br />2.70 <br />20 <br />Zinc <br />127 <br />1.52 <br />" <br />37.9 87.0 106 75-125 <br />8.20 <br />20 <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 />fo Page 13 of 19 <br />