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Sequoia <br />• • <br />1455 McDowell Blvd. North, Ste. D <br />Petaluma, CA 94954 <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 12/12/00 11:01 <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 0120048 - General Preparation <br />Blank (0120048-BLK1) Prepared & Analyzed: 12/04/00 _ <br />Hexavalent Chromium ND 0.0130 mg/kg <br />LCS (0120048-BS1) Prepared & Analyzed: 12/04/00 <br />Hexavalent Chromium 0.241 0.0130 mg/kg 0.250 96.4 80-120 <br />Matrix Spike (0120048 -MSI) Source: P011458-01 Prepared & Analyzed: 12/04/00 <br />Hexavalent Chromium 0.0990 0.0130 mg/kg 0.250 ND 39.6 75-125 QM -07 <br />Matrix Spike Dup (0120048-MSD1) Source: POI 1458-01 Prepared & Analyzed: 12/04/00 <br />Hexavalent Chromium 0.0990 0.0130 mg/kg 0.250 ND 39.6 75-125 0 20 QM -07 <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 19 <br />fo <br />