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• <br /> CHEMTECH ANALYTICAL LABORATORIES <br /> ANALYSIS REPORT <br /> CLIENT - Western Geo CONTACT: G. Converse <br /> Date Samples Received: 11-30-90 P .O. # - <br /> Date of Analysis . 12-10-90 CT ID• 1641 <br /> Lab ID: LCS , LCSD <br /> Matrix - Water <br /> BTEX MATRIX SPIKE SUMMARY <br /> RUN DATE: 12-10-90 <br /> CONC UNITS ug/L (ppb) <br /> SAMPLE SPIKED LCS , LCSD- ( 1641. ) <br /> COMPOUND CONC CONC PERCENT <br /> SPIKED MEASURED RECOVERY RPD <br /> MS MSD MS MSD <br /> • BENZENE 25 22 21 88% 84% 5% <br /> TOLUENE 25 23 22 92% 88% 4% <br /> ETHYLBENZENE 25 24 23 96% 920 4 <br /> O/M/P-XYLENES 75 70 68 93% 910 29o- <br /> MS <br /> %MS = Matrix Spike <br /> iSi "L k � Spike Lu3�EiI ,i <br /> RPD = Relative Percent Difference <br /> CONC = Concentration <br /> • <br /> 3017 KIGORE ROAD #1 10 + RANCHO CORDOVA CA 9572 PHONE (9,6) 635 3962 + FAX (91 61 635 9331 <br />