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t Sequoia <br />i <br />819 Striker Avenue, Suite 8 <br />Sacramento, CA 95834 <br />(916) 921-9600 <br />FAX (916) 921 -0 100 <br />ECMS <br />Project: <br />QBR-DEH <br />Sampled: <br />10/1/99 <br />P.O. Box 622228 <br />Project Number: <br />N/A <br />Received: <br />10/6/99 <br />Orangevale, CA 95662 <br />Project Manager: <br />Maureen Dogett <br />Reported: <br />10/14/99 <br />Conventional Chemistry Parameters by APHA/EPA 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: 9100142 <br />Date Prepared: <br />10/12/99 <br />Extraction Method: General Preparation <br />Duplicate <br />9100142-DUP1 <br />S910072-01 <br />pH <br />10/12/99 <br />7.54 <br />7.55 <br />pH Units 20.0 0.133 <br />Batch: 9100152 <br />Date Prepared: <br />10/13/99 <br />Extraction Method: General Preparation <br />Blank <br />9100152-BLKI <br />TRPH <br />10/13/99 <br />ND <br />mo/I 1.00 <br />LCS <br />9100152 -BSI <br />TRPH <br />10/13/99 <br />2.00 <br />2.18 <br />mg/l 70.0-130 109 <br />LCS Dup <br />9100152-BSDI <br />TRPH <br />10/13/99 <br />2.00 <br />2.41 <br />mg/l 70.0-130 121 30.0 10.4 <br />5 <br />Sequoia Analytical - Sacramento <br />WR <br />*Refer to end of report for text of notes and definitions. <br />Page 6 of 7 <br />