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Sequoia 680 Chesapeake Drive Rcd�ood City CA 94063 (415) 364 9600 FAX (415) 364 9233 <br /> 404 N u',gct lane Walnut Creek CA 94598 {510) 988 9600 FAX (510)98B 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 911 9600 FAX (916)921 0100 <br /> Pacific Environmental Group Client Project ID 310-097 1 B /0123,Tracy <br /> 2025 Gateway Place, Suite 440 Matrix SOLID <br /> San Jose, CA 95110 <br /> Attention Joe Muzzio Work Order# 9612616 01-04 Reported Dec 20, 1996 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Beryllium Cadmium Chromium Nickel <br /> QC Batch# ME121396601OMDE ME121396801OMDE ME121396601OMDE ME121396601OMDE <br /> Analy Method EPA 6010 EPA 6010 EPA 6010 EPA 6010 <br /> Prep Method EPA 3050 EPA 30500 EPA 3050 EPA 3050 <br /> Analyst R Butler R Butler R Butler R Butler <br /> MS/MSD# 961261601 961261601 961261601 951261601 <br /> Sample Cone ND NO 22 25 <br /> Prepared Date 12/13/96 12/13/96 12/13/96 12/13/96 <br /> Analyzed Date 12/14/96 12/14/96 12/14/96 12/14/96 <br /> Instrument LD # MTJA2 L4TJA2 MTJA2 MTJA2 <br /> Cone Spiked 100 mg/Kg 100 mg/Kg 10o mg/Kg 100 mg/Kg <br /> Result 94 98 120 120 <br /> • MS % Recovery 94 98 98 95 <br /> Dup Result 95 99 120 120 <br /> MSD%Recov. 95 919 98 95 <br /> RPD 11 10 00 00 <br /> RPD Limit: 0-20 0-20 0-20 0-20 <br /> LCS#: BLK121396 BLK121396 BLK121396 BLK1213% <br /> Prepared Date- 12/13/96 12/13/96 12/13/96 12/13/96 <br /> Analyzed Date 12/14/96 12/14/96 12/14/96 12/14/96 <br /> Instrument I.D.#. MTJA2 MTJA2 MTJA2 MTJA2 <br /> Cone Spiked 10o mg/Kg too mg/Kg 100 mg/Kg 100 mg/Kg <br /> LCS Resu t. 100 110 100 100 <br /> LCS %Recov.: 100 110 100 100 <br /> LCS 80-120 80-120 80-120 80-120 <br /> Control Limits <br /> Please Note <br /> . The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> SEQUOIA ANALYTICAL 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 /> Tod Granicher <br /> Project Manager **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9612616 PPP <2> <br />