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44) SEQUOIA ANALYTICAL <br /> 819 Striker Avenue, Suite 8 • Sacramento, CA 95834 <br /> (916) 921-9600 9 FAX (916) 921.0100 <br /> EGroumfwater <br /> 4d <br /> r Technology Client Project ID #023201466,Golden Grain,229 Moffat,Manteca,CA <br /> hicago Hwy <br /> 94520 <br /> hris Desocio OC Sample Group 2090303-04 Reported Oct 1, 1992€,,.,,� <br /> QUALITY CONTROL DATA REPORT <br /> I <br /> ANALYTE Ethyl- <br /> Benzene Toluene Benzene Xylenes Lead <br /> Method EPA 502 EPA 502 EPA 602 EPA 602 EPA 239.2 <br /> Analyst Chla•Pvailoti Miaravelintl ChlaravaLoti Chlaraval►ot S Fester <br /> Reporting Units erg/L p9/L u9/L Na/L me/L <br /> Date Analyzed Sep 24, 1992 Sep 24, 1992 Sep 24, 1992 Sep 24, 1992 Sep 30. 1992 <br /> OC Sample# BLK092492 BU=2492 BL X2492 BLM92492 2090246 <br /> Sample Conc.: N D N D N D N D N D <br /> iSpike Conc. <br /> Added: 10 10 10 20 50 <br /> Conc. Matrix <br /> Spike 82 85 86 17 45 <br /> Matnx Spike <br /> %Recovery: 82 85 86 85 90 <br /> Conc.Matrix <br /> Spike Dup.: 83 86 86 18 43 <br /> Matrix Spike <br /> Duplicate <br /> %Recovery- 83 86 86 90 86 <br /> Relative <br /> %Difference: 1.2 12 00 54 45 <br /> SEQUOIA ANALYTICAL %Recovery Conc of M 5 -Conc of Sample x 100 <br /> Spike Conc Added <br /> Relative%Difference Conc of M S -Conc of M S D x 100 <br /> Michael R Giles (Conc of M S + Conc of M S Q) 2 <br /> Laboratory Director <br /> 2090303 GRC <3> <br />