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a4 ) Sequoia `0 680 Chesapeake Drive Redwood City, CA 94f1M# (415) 364-9600 FAX (415) 364-9133 <br />404 N. Wiget Lane Walnut Creek, CA 94598 (510) 988-9600 FAX (510) 988-9673 <br />%P Analytical 819 Striker Avenue, Suite 8 Sacramento, CA 95834 (916) 911-9600 FAX (916) 911-0100 <br />Perkins Ave. <br />oma, CA 95476 <br />ntion: Joe Neel, <br />Matrix: Solid <br />Work Order #: 9610570 01, 05, 09, 13 <br />QUALITY CONTROL DATA REPORT <br />Reported: Oct 11, 1996'' <br />Analyst: <br />Analyte: <br />Beryllium <br />Cadmium <br />Chromium <br />Nickel <br />QC <br />Batch#: <br />ME101096601OMDE <br />ME1010966010MDE <br />ME101096601OMDE <br />ME101096601OMDE <br />Analy. <br />Method: <br />EPA6010 <br />EPA6010 <br />EPA6010 <br />EPA6010 <br />Prep. <br />Method: <br />EPA 3050 <br />EPA 3050 <br />EPA 3050 <br />EPA 3050 <br />Analyst: <br />R. Butler <br />R. Butler <br />R. Butler <br />R. Butler <br />MS/MSD #: <br />961057001 <br />961057001 <br />961057001 <br />961057001 <br />Sample Conc.: <br />N.D. <br />N.D. <br />20 <br />17 <br />Prepared Date: <br />10/10/96 <br />10/10/96 <br />10/10/96 <br />10/10/96 <br />Analyzed Date: <br />10/10/96 <br />10/10/96 <br />10/10/96 <br />10/10/96 <br />Instrument l.D.#: <br />MTJA2 <br />MTJA2 <br />MTJA2 <br />MTJA2 <br />Conc. Spiked: <br />100mg/Kg <br />1Domg/Kg <br />100mg/Kg <br />100mg/Kg <br />Result: <br />100 <br />95 <br />120 <br />110 <br />MS % Recovery: <br />100 <br />95 <br />100 <br />93 <br />Dup. Result: <br />110 <br />100 <br />130 <br />120 <br />MSD % Recov.: <br />110 <br />100 <br />110 <br />103 <br />RPD: <br />9.5 <br />5.1 <br />8.0 <br />8.7 <br />RPD Limit: <br />0-20 <br />0-20 <br />0-20 <br />0-20 <br />LCS #: <br />BLK101096 <br />BLK101096 <br />BLK101096 <br />BLK101096 <br />Prepared Date: <br />10/10/96 <br />10/10/96 <br />10/10/96 <br />10/10/96 <br />Analyzed Date: <br />10/10/96 <br />10/10/96 <br />10/10/96 <br />10/10/96 <br />Instrument I.D.#: <br />MTJA2 <br />MTJA2 <br />MTJA2 <br />MTJA2 <br />Conc. Spiked: <br />100 mg/Kg <br />100 mg/Kg <br />100 mg/Kg <br />100 mg/Kg <br />LCS Result: <br />100 <br />100 <br />100 <br />100 <br />LCS % Recov.: <br />100 <br />100 <br />100 <br />100 <br />LCS 80-120 60-120 80-120 80-120 <br />Control Limits <br />SEQUOIA AN YTICAL <br />Mike Gregory <br />Project Manager <br />Please Note: <br />The LCS is a control sample of known, interferent -free matrix that is analyzed using the same reagents, <br />preparation, and analytical methods employed for the samples. The matrix spike is an aliquot of sample <br />fortified with known quantities of specific compounds and subjected to the entire analytical procedure. If <br />the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br />interference, the LCS recovery is to be used to validate the batch. <br />** MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative %Difference 9610570.EEE <2> <br />