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SEQUOIA ANALYTICAL <br /> 680 Chesapeake Dnve - Redwood City,CA 94063 <br /> war (415) 364-9600 - FAX (415) 364-9233 <br /> Y ` <br /> RESNA Clierrt Protect ID W0623, l=aic n Fire Station #2 <br /> 1710 Main Street <br /> `kEscalon, CA 95320 <br /> Attention .3ohn Lane CC Sample Group 205-1798 Reported. May 26, 1992 <br /> QUALITY CONTROL DATA REPORT <br /> ' ANALYTE Eyl- <br /> Benzene Toluene benzene Xylenes Dhesel <br /> IMethod. EFA 802.0 EPA 8020 EFA 8020 EPA 8020 EPA 8015 <br /> AnalySt: A Maralit A Maralit A-Maralit A.Marald FL Lee <br /> Reporting Units: mg/kg mg/kg mg/kg mg/kg mg/kg <br /> Date Analyzed- May 15, 1992 May 15, 1992 May 15, 1992 May 15, 1992 May 12. 1992 <br /> CC Sample#: GBLKD51592 GBLK051592 GBLKA51592 GBLK051592 DBLK051292 <br /> MS/MSD MS/MSD MS/MSD MS/MSD <br /> Sample Conc.: N D. N.D. N D N D N.D. <br /> iSpike Cone. <br /> Added: 0.20 020 020 060 15 <br /> Cone. Matrix <br /> Spike: 0.21 021 0.18 062 12 <br /> Matrix Spike <br /> %Recovery: 105 105 90 103 80 <br /> i <br /> Conc. Matrix <br /> ' Spike Dup.: 0.22 021 0.22 065 13 <br /> Matrix Spike <br /> Duplicate <br /> ' % Recovery: 110 105 110 108 87 <br /> ' Relative <br /> % Difference: 47 0.0 20 47 80 <br /> 1 <br /> EQUOIA ANALYTICAL %Recovery Conc of M S -Conc of Sample x 100 <br /> Spike Conc Added <br /> Relatve%DFfterenee Cone of M S -Conc of MSD x 100 <br /> (Cant of M S + Conc of M S D /2 <br /> ro#ect Manager 2oS1r9a wAY `s' <br />