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S <br /> SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City.CA 9 <br /> 4063 <br /> (415)364-9600 FAX(415)364.9233 <br /> f xceltecti Client Project ID. #349132-31.Quik Stop 132,P0#22485 <br /> 41674 Christy Street <br /> Fremont,CA 94538Reported: Apr i8, 1991 <br /> Attention: Jlm Rubin Q C Sample Group. 104-irL30 <br /> QUALITY CONTROL DATA REPORT <br /> Phenol 4Cfi10ro- 4-Nitraphenol <br /> ANALYTE 3-methylphenol <br /> EPA 8040 EPA 8040 <br /> Method: SPA 8040L Haar <br /> Analyst: L.Haar L.Haar <br /> Reporting Units: u9 P9 P" <br /> Date Analyzed: Apr 15. 1991 Apr 15, 1991 Apr 15, 1991 <br /> QC Sample#: BLK041291 BLK041291 BLKo41291 <br /> Sample Conc.: <br /> N.D. N.D. N.D. <br /> Spike Cone. 50 50 50 <br /> Added: <br /> Conc.Matrix 37 33 29 <br /> Spike: <br /> Matrix Spike 58 <br /> %Recovery: 74 <br /> 66 Conc.Matrix 43 38 30 <br /> Spike DuP.: <br /> Matrix Spike <br /> Duplicate 76 60 <br /> %Recovery: 36 <br /> Relative 14 3.4 <br /> %Difference: 15 <br /> EQUQI�ANALYTICAL %Recovery. Conc.of M.S.-Conc.of Sample x 100 <br /> p r $pike Conc. <br /> SAdded <br /> Conc.of Conc. <br /> of M.S.O. -1W <br /> i Relative%Difference: <br /> {Ganc.of M.S. of M.S.D.)12 1041930.ENS c8> <br /> Vickie Tague <br /> Project Manager <br />