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0 u <br /> 'µ •� Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> ill Analytical 819 Striker Avenue Suite 8 Sacramento, CA 95834 (916) 921: 9600 FAX(916)921 0100 <br /> i <br /> Smith Environmental Client Project ID 94-331 01-07 <br /> 1260 Graphics Drive Matrix Liquid <br /> Modesto, CA 95351-1502 <br /> Attention Jeanne Hornsey Work Order# 9612567 -01-04, 06 Reported Dec 26, 1996 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch.# GC121296BTEX07A GC121296BTEX07A GC121296BTEX07A GC121296STEX07A <br /> Analy Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep Method EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst A.Porter A Porter A Porter A Porter <br /> MS/MSD # 961217801 961217801 961217801 961217801 <br /> Sample Conc N D NO N D N D <br /> Prepared Date 12/12/96 12/12/96 12/12/96 12/12/96 <br /> Analyzed Date 12/12/96 12/12/96 12/12/96 12/12/96 <br /> Instrument I D # GCHP7 GCHP7 GCHP7 GCHP7 <br /> Conc Spiked 10 ug/L 10 ug/L 10 ug/L 30pg/L <br /> Result 12 12 12 36 <br />• MS % Recovery 120 120 120 120 <br /> Dup Result 11 11 12 34 <br /> MSD % Recov 110 110 120 113 <br /> RPD 87 87 00 57 <br /> RPD Limit 0-25 0-25 0-25 0-25 <br /> LCS # BLK121296 BLK121296 BLK121296 BLK121296 <br /> Prepared Date 12/12/96 12/12/96 12/12/96 12/12/96 <br /> Analyzed Date 12/12/96 12/12/96 12/12/96 12/12/96 <br /> Instrument I D # GCHP7 GCHP7 GCHP7 GCHP7 <br /> Conc Spiked 10ug/L 10ug/L long/L 30Ng/L <br /> LCS Result 11 11 11 34 <br /> LCS % Recov 110 110 110 113 <br /> MS/MSD 60-140 60-140 60-140 60-140 <br /> LCS 70-130 70-130 70-130 70-130 <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 /> nterference,the LCS recovery is to be used to validate the batch <br /> Vytas Ankaitls <br /> Project Manager "*MS=Matrix Spike,MSD=MS Duplicate, RPD=Relative%Difference 9612567 SSS <11> <br />