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CHROMALAB, INC. <br /> Environmental Services(SOB) <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 /> re: Matrix spike report for Lead analysis . <br /> Method: EPA 305OA/7420A <br /> ' Matrix: SOIL Extracted: January 18, 1999 <br /> Lab Run#: 16998 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/Ra) (ma/Ra) (ma/Ka) M M Limits RPD Lim <br /> rLEAD 49 250 250 296 299 98 . 8 100 85-115 1 .21 20 <br /> Sample Spiked: 225368 <br /> Submission #: 9901168 <br /> Client Sample ID: S-1 <br /> MS Smpl #: 225442 1220 Quarry Lane • Pleasanton, California 94566-4756 <br /> MSD Smpt #: 225443 (925) 484-1919 • Facsimile (925) 484-1096 QCMSPK1229 ACHRIS 22-Jan-9906: <br /> Federal ID#68-0140157 <br />