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1 Sequoia <br />wo Analytical <br />441 N. Whisman, Bldg. 23 <br />Mountain View, CA 94043 <br />Attention: Rich Garlow <br />Is680 <br />Chesapeake Drive <br />Redwood City, CA 940 <br />(415) 364-9600 <br />FAX (415) 364-9233 <br />ME092096601OMDE <br />404 N. Wiget Lane <br />Walnut Creek, CA 94598 <br />(510) 988-9600 <br />FAX (510) 988-9673 <br />EPA 6010 <br />819 Striker Avenue, Suite 8 <br />Sacramento, CA 95834 <br />(916) 921-9600 <br />FAX (916) 921 -0 100 <br />Client Project ID: 20940, 94-261-94-20 <br />Matrix: Solid <br />Work Order #: 96091344 -01-02 <br />QUALITY CONTROL DATA REPORT <br />Analyte: Beryllium <br />Cadmium <br />Chromium <br />Nickel <br />QC Batch#: ME092096601OMDE <br />ME092096601OMDE <br />ME092096601OMDE <br />ME092096601OMDE <br />Analy. Method: EPA 6010 <br />EPA 6010 <br />EPA 6010 <br />EPA 6010 <br />Prep. Method: EPA 3050 <br />EPA 3050 <br />EPA 3050 <br />EPA 3050 <br />Analyst: <br />C. Medefesser <br />C. Medefesser <br />C. Medefesser <br />C. Medefesser <br />MS/MSD #: <br />960981101 <br />9609B1101 <br />960981101 <br />9609B1101 <br />Sample Conc.: <br />1.1 <br />N.D. <br />190 <br />190 <br />Prepared Date: <br />9/20/96 <br />9/20/96 <br />9/20/96 <br />9/20/96 <br />Analyzed Date: <br />9/21/96 <br />9/21/96 <br />9/21/96 <br />9/21/96 <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 />Result: <br />100 <br />98 <br />240 <br />300 <br />MS % Recovery: <br />99 <br />98 <br />50 <br />110 <br />Dup. Result: <br />96 <br />92 <br />210 <br />260 <br />MSD % Recov.: <br />95 <br />92 <br />20 <br />70 <br />RPD: <br />4.1 <br />6.3 <br />13 <br />14 <br />RPD Limit: <br />0-20 <br />0-20 <br />0-20 <br />0-20 <br />LCS #: <br />BLK092096 <br />BLK092096 <br />BLK092096 <br />BLK092096 <br />Prepared Date: <br />9/20/96 <br />9/20/96 <br />9/20/96 <br />9/20/96 <br />Analyzed Date: <br />9/21/96 <br />9/21/96 <br />9/21/96 <br />9/21/96 <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 />MS/MSD <br />LCS 80-120 80-120 80-120 80-120 <br />Control Limits <br />SEQU ANALYTICAL <br />Vyt S Ankaiq. <br />Pr ect Manager <br />tease Note: <br />The LCS is a control sample of known, interferent -free matrix that is analyzed using the same reagents, <br />reparation, and analytical methods employed for the samples. The matrix spike is an aliquot of sample <br />)rtified with known quantities of specific compounds and subjected to the entire analytical procedure. If <br />ie recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br />lterference, the LCS recovery is to be used to validate the batch. <br />** MS=Matrix Spike, MSD =MS Duplicate, RPD=Relative % Difference 9609B44.SSS <1 > <br />rem <br />