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0 • <br /> SEQUOIA ANALYTICAL <br /> 819 Striker Avenue, Suite 8 • Sacramento, CA 95834 <br /> (916) 921-9600 • FAX (916) 921-0100 <br /> . <br /> x. <br /> RESNA Industries Client Project ID: Arco #2076, Lodi <br /> :::3164 Gold Camp Drive, Suite 200 <br /> Rancho Cordova, CA 95670 <br /> :...Attention: Eloise Cherven QC Sample Group: 1110672-81 Reported: Nov 26, 1991 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Chloro- Chloro- <br /> 1,1-Dichloroethene Trichloroethene benzene Benzene Toluene benzene (PID) <br /> Method: EPA 601 EPA 601 EPA 601 EPA 602 EPA 602 EPA 602 <br /> Analyst: M. Nguyen M. Nguyen M. Nguyen M.Nguyen M. Nguyen M. Nguyen <br /> Reporting Units: Ng/kg ;ic;kg ug/kg pg/kg Ng/kg pg/kg <br /> Date Analyzed: Nov 22, 1991 Nov 22, 1991 Nov 22, 1991 Nov 22, 1991 Nov 22. 1991 Nov 22, 1991 <br /> QC Sample #: BLK112291 BLK112291 BLK112291 BLK112291 BLK112291 BLK112291 <br /> MS/MSD MS/MSD MS/MSD MS/MSD MS/MSD MS/MSD <br /> Sample Conc.: N.D. N.D. N.D. N.D. N.D. N.D. <br /> Spike Conc. <br /> Added: 10 10 10 10 10 10 <br /> Conc. Matrix <br /> Spike: 13 9.7 11 10 9.3 9.9 <br /> Matrix Spike <br /> % Recovery: 130 97 110 100 93 99 <br /> Conc. Matrix <br /> Spike Dup.: 13 10 11 10 9.2 9.1 <br /> Matrix Spike <br /> Duplicate <br /> • Recovery: 130 100 110 100 92 91 <br /> Relative <br /> • Difference: 0.0 3.0 0.0 0.0 1.1 8.4 <br /> Quality Assurance Statement: All standard operating procedures and quality control requirements have Deen met. <br /> SEQUOIA ANALYTICAL °o Recovery: Conc.of M.S.-Conc.of Sample x 100 <br /> Spike Conc.Aaaea <br /> Relative%Difference: Conc.of M.S.-Conc.of M.S.D. x 100 <br /> Rick R. DiMaio ,Conc.of M.S. + Conc.of M.S.D.)/2 <br /> Project Manager ^672.RES <s> <br />