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CHROMALAB, INC. <br /> EWronmental Services(SDB) <br /> January 22, 1999 Submission #: 9901168 <br /> ' URS GREINER <br /> Atten: Nate Johnson <br /> Project: ARCH RD Project#: 43-0006672 . 00 . 200 <br /> Received: January 15, 1999 <br /> 1 re: Matrix spike report for Lead analysis . <br /> Method: EPA 3050A/7420A <br /> ' Matrix: SOIL Extracted: January 18, 1999 <br /> Lab Run#: 17000 Instrument: Analyzed: January 18, 1999 <br /> ' Spiked <br /> Sample Spike Amt Amt Found Spike Recov % <br /> Amount MS MSD MS MSD MS MSD Control RPD <br /> Analyte (ma/Ka) (ma/Ka) (ma/Ka) (%) (%) Limits RPD Lim <br /> LEAD N.D. 250 250 243 247 97 . 2 98 . 8 85-115 1 . 63 20 <br /> Sample Spiked: 225389 <br /> Submission #: 9901168 <br /> Client Sample ID: S-22 <br /> Ms smpt #: 225451 1220 Quarry Lane • Pleasanton, California 94566-4756 <br /> MSD Smpt #: 225452 (925) 484-1919 • Facsimile (925) 484-1096 CCMSPK1229 ACMRIS 22Jm99M <br /> Federal ID#68-0140157 <br />