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Sequoia <br />Cadmium <br />680 Chesapeake Drive <br />Redwood City, CA 9400 <br />(415) 364-9600 <br />FAX (415) 364-9233 <br />Analytical <br />ME092596601OMDE <br />404 N. Wiget Lane <br />819 Striker Avenue, Suite 8 <br />Walnut Creek, CA 94598 <br />Sacramento, CA 95834 <br />(510) 988-9600 <br />(916) 921-9600 <br />FAX (510) 988-9673 <br />FAX (916) 921-0100 <br />Smith Environmental <br />441 N. Whisman, Bldg. 23 <br />Mountain View, CA 94043 <br />Attention: Rich Garlow <br />Client Project ID: 20941, 94-261-94-20 <br />Matrix: Solid <br />Work Order #: 9609D08 -01, 02, 07-12,14 <br />QUALITY CONTROL DATA REPORT <br />Oct 3. 1996 <br />Analyte: Beryllium <br />Cadmium <br />Chromium <br />Nickel <br />QC Batch#: ME092596601OMDE <br />ME092596601OMDE <br />ME092596601OMDE <br />ME092596601OMDE <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 />9609D7001 <br />9609D7001 <br />9609D7001 <br />9609D7001 <br />Sample Conc.: <br />0.64 <br />0.68 <br />38 <br />53 <br />Prepared Date: <br />9/25/96 <br />9/25/96 <br />9/25/96 <br />9/25/96 <br />Analyzed Date: <br />9/25/96 <br />9/25/96 <br />9/25/96 <br />9/25/96 <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 />130 <br />150 <br />MS % Recovery: <br />99 <br />97 <br />92 <br />97 <br />Dup. Result: <br />100 <br />98 <br />140 <br />150 <br />MSD % Recov.: <br />99 <br />97 <br />102 <br />97 <br />RPD: <br />0.0 <br />0.0 <br />7.4 <br />0.0 <br />RPD Limit: <br />0-20 <br />0-20 <br />0-20 <br />0-20 <br />LCS #: <br />BLK092596 <br />BLK092596 <br />BLK092596 <br />BLK092596 <br />Prepared Date: <br />9/25/96 <br />9/25/96 <br />9/25/96 <br />9/25/96 <br />Analyzed Date: <br />9/25/96 <br />9/25/96 <br />9/25/96 <br />9/25/96 <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 />110 <br />100 <br />110 <br />110 <br />LCS % Recov.: <br />110 <br />100 <br />110 <br />110 <br />MS/MSD <br />LCS 80-120 80-120 80-120 80-120 <br />Control Limits <br />SXManager <br />ICAL <br />V <br />P <br />'lease 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 />iterference, the LCS recovery is to be used to validate the batch. <br />** MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative % Difference 9609D08.SSS <1> <br />