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SEQUOI ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City, CA 94063 <br /> (415) 364-9600 FAX(415) 364-9233 <br /> auk h oP - cx�aox r <br /> RESNA Client Project ID: W&75 13,Weber PoinE <br /> �1710 Mam Street <br /> h <br /> �,�Escalon, CA 95320 Reported: Jun 9, 1992 <br /> �Atterltwn TinroyacLe Pale OC Sample Grattp 206.0641 ,� <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl- <br /> Benzene Toluene benzene Xyfenea <br /> Method. EPA 8020 FPA 8020 EPA 8020 EMS= <br /> Analyst: M mpp M.Kipp M Nipp M Mpp <br /> Reporting Units: mg/L yo/L ug/L yg/L <br /> Date Analyzed: Jun 4, 1992 Jun 4. 1992 Jun 4, 1992 Jun 4, 1592 <br /> OC Sample# GBUM60492 GBLKDO0492 GBLK060492 GBLKOW492 <br /> MS/MSD MS/MSD MS/MSD MS/MSD <br /> Sample Cork.: N D. N D N D N D <br /> Spike Coro. <br /> Added: 10 90 10 30 <br /> Conc. Mahtt <br /> Spike: 10 97 97 29 <br /> Matrix Spike <br /> %Recovery: 100 97 97 97 <br /> Conc. Matrix <br /> Spike Dup.: 11 10 10 30 <br /> Matrix Spike <br /> Duplicate <br /> %Recovery: 910 100 100 100 <br /> Relative <br /> %Difference: 95 30 30 34 <br /> SEQUOIA ANALYTICAL %Flecovery, Conc of M S -Conc.of Sernple _ it 100 <br /> Spike Cone Added <br /> �! t/1`! Aelativ0%DBMrence Conc of M S.-Conc of M&D u 100 <br /> Conc.of M S. + Conc of M S.Q 2 <br /> 0ject Manager 2060641 WAT <2> <br />