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Sequoia <br />Anal tics -1 <br />819 Striker Avenue, Suite 8 <br />Sacramento, CA 95834 <br />(916) 921-9600 <br />FAX (916) 921-0100 <br />ECMS Project: QBR-DEH Sampled: 10/1/99 <br />P.O. Box 622228 Project Number: N/A Received: 10/6/99 <br />Orangevale. CA 95662 Project Manager: Maureen Dogett Reported: 10/14/99 <br />Total Metals by EPA 6000/7000 Series Methods/Quality Control <br />Sequoia Analytical - Sacramento <br />Date Spike Sample QC Reporting Limit Recov. RPD RPD <br />Analyte Analyzed Level Result Result Units Recov. Limits % Limit % Notes* <br />Batch: 9100086 <br />Date Prepared: <br />10/7/99 <br />Extraction Method: EPA 3050B <br />Blank <br />9100086-BLK1 <br />Antimony <br />10/7/99 <br />ND <br />mg/kg <br />2.50 <br />Arsenic <br />ND <br />2.50 <br />Barium <br />ND <br />2.50 <br />Beryllium <br />ND <br />0.250 <br />Cadmium <br />ND <br />0.250 <br />Chromium <br />ND <br />0.250 <br />Cobalt <br />ND <br />1.00 <br />Copper <br />ND <br />0.250 <br />Lead <br />ND <br />2.50 <br />Molybdenum <br />ND <br />1.00 <br />Nickel <br />ND <br />1.00 <br />Selenium <br />ND <br />2.50 <br />Silver <br />ND <br />0.250 <br />Thallium <br />ND <br />2.50 <br />Vanadium <br />ND <br />1.00 <br />Zinc <br />ND <br />0.250 <br />LCS <br />9100086-BSl <br />Arsenic <br />10/7/99 <br />50.0 <br />47.6 <br />mg/kg <br />80.0-120 <br />95.2 <br />Cadmium <br />50.0 <br />48.2 <br />80.0-120 <br />96.4 <br />Chromium <br />50.0 <br />49.1 <br />80.0-120 <br />98.2 <br />Nickel <br />50.0 <br />48.7 <br />80.0-120 <br />97.4 <br />Zinc <br />50.0 <br />49.1 <br />80.0-120 <br />98.2 <br />Matrix Spike <br />9100086 -MSI <br />S910031-09 <br />Arsenic <br />10/7/99 <br />50.0 <br />ND <br />45.8 <br />mg/kg <br />80.0-120 <br />91.6 <br />D <br />Cadmium <br />50.0 <br />ND <br />41.8 <br />80.0-120 <br />83.6 <br />D <br />Chromium <br />50.0 <br />38.0 <br />77.7 <br />80.0-120 <br />79.4 <br />1,D <br />Nickel <br />50.0 <br />43.9 <br />83.2 <br />80.0-120 <br />78.6 <br />1,D <br />Zinc <br />50.0 <br />48.0 <br />87.8 <br />80.0-120 <br />79.6 <br />1,D <br />Matrix Spike Dup <br />9100086-MSDI <br />S910031-09 <br />Arsenic <br />10/7/99 <br />50.0 <br />ND <br />46.0 <br />mg/kg <br />80.0-120 <br />92.0 <br />20.0 <br />0.436 <br />D <br />Cadmium <br />50.0 <br />ND <br />41.5 <br />80.0-120 <br />83.0 <br />20.0 <br />0.720 <br />D <br />Chromium <br />50.0 <br />38.0 <br />78.8 <br />80.0-120 <br />81.6 <br />20.0 <br />2.73 <br />D <br />Nickel <br />50.0 <br />43.9 <br />84.4 <br />80.0-120 <br />81.0 <br />20.0 <br />3.01 <br />D <br />Zinc <br />50.0 <br />48.0 <br />86.3 <br />80.0-120 <br />76.6 <br />20.0 <br />3.84 <br />1,D <br />Sequoia Analytical - Sacramento *Refer to end of report for text of notes and definitions. <br />Page 5 of 9 <br />M <br />