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II1 <br /> �i Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 404 N Wlget Trane Walnut Creek CA 94598 (510) 988 9600 FAX(510) 988 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento, CA 95834 (916) 921 9600 FAX(916)911 0100 <br /> Iwo- <br /> Pacific Environmental Group Client Project ID 911 007-1A/5417, Manteca <br /> 2025 Gateway Place, Suite 440 Matrix LIQUID <br /> San Jose, CA 95110 <br /> Attention Joe Muzzio Work Order# 9801925 01, 02 Reported Jan 27, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Beryllium Cadmium Chromium Nickel <br /> QC Batch# ME012298601OMDA ME0122986010MDA ME012298601OMDA ME012298601OMDA <br /> Analy Method EPA 6010 EPA 6010 EPA 6010 EPA 6010 <br /> Prep Method EPA 3010 EPA 3010 EPA 3010 EPA 3010 <br /> Analyst T Sears T Sears T Sears T Sears <br /> MS/MSD # 980163901 980163901 980183901 9801133901 <br /> Sample Conc N D N D N D N D <br /> Prepared Date 1/22/98 1/22/98 1/22/98 1/22/98 <br /> Analyzed Date 1/22/98 1/22/98 1/22/98 1/22/98 <br /> Instrument I D # MTJA5 MTJA5 MTJA5 MTJA5 <br /> Conc Spiked 1 0 mg/L 1 0 mg/L 1 0 mg/L 1 0 mg/L <br /> Result 10 10 10 11 <br /> MS % Recovery 100 100 100 110 <br /> Dup Result 1 1 11 10 1 1 <br /> MSD % Recov 110 110 100 110 <br /> RPD 95 95 00 00 <br /> RPD Limit 0-20 0-20 0-20 0-20 <br /> LCS # BLK012298 BLK012298 BLK012298 BLK012298 <br /> Prepared Date 1/22/98 1/22/98 1/22/98 1/22/98 <br /> Analyzed Date 1/22/98 1/22/98 1/22/98 1/22/98 <br /> Instrument I D # MTJA5 MTJA5 MTJA5 MTJA5 <br /> Conc Spiked 1 0 mg/L 10 mg/L 1 0 mg/L 1 0 mg/L <br /> LCS Result 1 1 1 1 1 1 1 1 <br /> LCS % Recov 110 110 110 110 <br /> 80-120 80-120 80-120 80-120 <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 9801925 PPP <2> <br />