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• <br /> CHEMTECH ANALYTICAL LABORATORIES <br /> ANALYSIS REPORT <br /> CLIENT: Western Geo CONTACT: G. Converse <br /> Date Samples Received: 11-29-90 P.O. # : <br /> Date of Analysis : 12-03-90 CT ID: 1637 <br /> Lab ID: LCS , LCSD <br /> Matrix : Water <br /> BTEX MATRIX SPIKE SUMMARY <br /> RUN DATE: 12-03-90 <br /> CONC UNITS . ug/L (ppb) <br /> SAMPLE SPIKED: LCS , LCSD- ( 1637 ) <br /> COMPOUND CONC CONC PERCENT % <br /> SPIKED MEASURED RECOVERY RPD <br /> • MS MSD MS MSD <br /> BENZENE 25 28 27 112% 108% 4% <br /> TOLUENE 25 28 25 112% 100% 110 <br /> ETHYLBENZENE 25 27 26 1080 108% 4% <br /> O/M/P-XYLENES 75 81 78 108% 104% 4% <br /> MS = Matrix Spike <br /> MSD = Matrix Spike Duplicate <br /> RPD = Relative Percent Difference <br /> CONC = Concentration <br /> 3017 KILGORE ROAD :L11 ,0 • RANCHO CORDOVA CA 95742 PHCNE (9 16) 635 3932 • FAX (916) 635 933 <br />