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j SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive Redwood City, CA 94063 <br /> (415) 364-9600 FAX (415) 364-9233 <br /> RESNA Client Project ID 54006 01, Coca-Cola-Stockton <br /> 3315 Almaden Expwy,, Suite 34 <br /> San Jose, CA 95118 <br /> Attention Joan Tiernan OC Sample Group 2112094-2103 Reported Nov 19, 1992 <br />' QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl- <br /> Benzene Toluene benzene Xylenes <br /> I <br /> Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Analyst M Nipp M Nipp M Nipp M Nipp <br /> Reporting Units mg/m3 mg/m3 mg/ms mg/m3 <br /> r Date Analyzed Nov 13, 1992 Nov 13, 1992 Nov 13, 1992 Nov 13, 1992 <br /> QC Sample# GBLK111392 GBLK111392 GBLK111392 GBLK111392 <br /> MS/MSD MS/MSD MS/MSD MS/MSD <br /> ISample Conc.: N D N D N D N D <br /> i <br /> Spike Conc. <br /> Added: 10 10 10 30 <br />' Conc. Matrix <br /> Spike: 10 10 11 32 <br /> Matrix Spike <br /> %Recovery: 100 100 110 107 <br /> Conc. Matrix <br /> Spike Dup.: 11 11 11 32 <br />' Matrix Spike <br /> Duplicate <br /> 1 % Recovery. 110 110 110 107 <br /> Relative <br />' %Difference: 95 95 0 0 00 <br /> I&EQUOIA ANALYTICAL %Recovery Conc of M S -Conc of Sample X100 <br /> Spike Conc Added <br /> f� �� L�G� Retatwe%Difference Conc of M$ -Conc of M S D x 100 <br /> (Conc of M S + Conc of MSD)/2 <br /> f rolect Manager 2112094 RES <3;1- <br />