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is I <br /> SEQUOL.4j.-* ALYTICAL <br /> 680 Chesapeake DriveRedwood City,CA 94063 <br /> (415)364-9600 FAX(415)364-9233 <br /> � a <br /> r <br /> Waterwork Client project ID: Eckhdm <br /> 1710 Main Street <br /> . Escalon, CA 95320 <br /> Attention: Bill Channell OC Sample Group: 1043733-3740 Re rted: Ma 6, 1991 <br /> t <br /> QUALITY CONTROL DATA REPORT <br /> F i <br /> f <br /> ANALYTE 1.1-Diehloro- Tdchloro- Chiaro- <br /> k @then@ ethane Wrnrone <br /> 'i <br /> Method: EPA 8010 EPA 8010 EPA 8010 <br /> Analyst: J.War J.War a War <br /> Reporting Units: Pg ft W/kp pg/kp <br /> Date Analyzed: Apr 26, 1991 Apr 26. 1991 Apr 26. 1991 i <br /> OC Sample#: BLK 042891 BLK 042881 BLK 0421 <br /> 1 <br /> Sample Cone.: N.D. N.D. N.D. <br /> Spike Cone. <br /> Added: 50 50 50 <br /> Cone. Matrix <br /> Spike: 47 43 48 <br /> Matrix Spike <br /> %Recovery: 94 86 96 <br /> Corte. Matrix !` <br /> Spike Dup.: 51 44 49 <br /> Matrix Spike <br /> Duplicate ! <br /> %Recovery: 100 88 98 <br /> Relative <br /> %Difference: 8.2 2.3 2.1 <br /> ;abet <br /> ANALYTICAL �(, covery: Cone.of M.S.-Cont.of Sample x 100 <br /> Spike Cone.Added ` <br /> ( Relative%Dl wence: Cone.of M.S.-Cane.of M.S.D. x 100 <br /> W. HaCld Cone.of M.S. + Conc.of M.S.D. 2 <br /> �_(,El <br /> nager 104MINAT 00> <br /> I <br /> i, <br /> I j <br /> r _I <br />