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SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City.CA 94063 <br /> (415)354-9600 • FAX(415)364-9233 <br /> Waterwork tent Prolan iD 376, Stockton <br /> 1710 Main Street <br /> Escalon,CA 95320 <br /> Attention Tina.Le 0CSampleGrGup 1051338-1340 R ed A+Ia 20, 1991 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Etcyt- <br /> Beraene Toluene benzene XAMN <br /> EPA EPA EPA EPA <br /> Method 8015/8020 8015/8020 8015/8= 8015/8020 <br /> Analyst. R Eastman R :�%stman R Easbnan R Eastman <br /> Reporting Units no no no no <br /> Date Analyzed May 10, 1991 May 1% 1991 May 10, 1991 May 10, 1691 <br /> OC Sample# GBLK 051091 GBLK o51o91 G81K 051091 G8LK 051091 <br /> Sample Conc. ND ND ND ND <br /> w Spike Cone. <br /> Added: 100 1G 100 300 <br /> Conc.Matrix <br /> Spike: 110 110 110 320 <br /> W Matrix Spike <br /> %Recovery: 110 110 110 110 <br /> Conc Matrix <br /> Spike Dup: 110 110 110 330 <br /> Matrix Spike <br /> Duplicate <br /> %Recovery, 110 110 110 110 <br /> Relative <br /> %Difference: 00 00 00 31 <br /> SEQ OIA ANALYTICAL %Recowrr nc. WS Coro of pie x 100 <br /> tiSoke Com Added <br /> Relative%DiHtrence Cons of M S-Cono al M S D K 100 <br /> 1 zaa th c {Conn o1 M t nc 4 M 2 <br /> roJect Manager 1051339 wAt 42> <br />