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ShSequoia <br />qQF Analytical <br />`// 1455 McDowell Blvd. North, Ste. D <br />Petaluma, CA 94954 <br />(707)792-1865 <br />FAX (707) 792-0342 <br />Cambria Environmental <br />Project: <br />TFD 4B-28 <br />Sampled: <br />11/2/99 <br />270 Perkins St. <br />Project Number: <br />3011 West Benjamin Holt Dr. <br />Received: <br />11/3/99 <br />Sonoma, CA 95476 <br />Project Manager: <br />Bob Perlowski <br />Reported: <br />11/9/99 <br />Organic Lead by DHS LUFT/Quality Control <br />Sequoia Analytical - Walnut Creek <br />Date Spike Sample QC Reporting Limit Recov. RPD RPD <br />Analyte Analyzed Level Result Result Units Recov. Limits % Limit % Notes* <br />Batch: 9KO5007 <br />Date Prepared: 11/5/99 <br />Extraction Method: LUFT-DHS <br />Blank <br />9K05007-BLK1 <br />Organic Lead <br />11/5/99 <br />ND <br />mg/kg <br />0.50 <br />LCS <br />9KO5007-BSI <br />Organic Lead <br />11/5/99 20.0 <br />13.2 <br />mg/kg <br />10-110 <br />66.0 <br />LCS Duo <br />9KO5007-BSDI <br />Organic Lead <br />11/5/99 20.0 <br />13.6 <br />mg/kg <br />10-110 <br />68.0 20 2.99 <br />Matrix Spike <br />9KO5007-MSI P911088-15 <br />Organic Lead <br />11/5/99 20.0 ND <br />1.06 <br />mg/kg <br />0-62 <br />5.30 <br />Matrix Spike Dup <br />9KO5007-MSDI P911088-15 <br />Organic Lead <br />11/5/99 20.0 ND <br />1.09 <br />mg/kg <br />0-62 <br />5.45 20 2.79 <br />Sequoia Analytical - Petaluma 'Refer to end of report for text of notes and definitions. <br />Page 19 of 20 <br />