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F <br /> F � CHEMTECH ANALYTICAL LABORATORIES Y <br /> ANALYSIS REPORT <br /> CLIENT: Western Geo CONTACT: G. Converse <br /> Date Samples Received: 04-04-91 P.D. 0: <br /> Date of Analysis: 04-04-91 CT ID: 1907 <br /> Lab ID: LCS, LCSD <br /> Matrix: Water <br /> STEX LABORATORY CONTROL SPIKE SUMMARY <br /> RUN DATE: 04-04-91 <br /> CONC UNITS: ug/L (ppb) <br /> SAMPLE SPIKED: LCS. LCSD-( 1807 ) <br /> _..__..-_..---------------------------------------_------------- <br /> CDMPOUND CONC CONC PERCENT % <br /> e SPIKED MEASURED RECOVERY RPD <br /> LCS LCSD LCS- <br /> -LCSD - <br /> -------------------------------------------------------------- <br /> BENZENE 25 23 29 92% 92% 0% <br /> TOLUENE 25 23 24 92% 96% 4% <br /> ETHYLBENZENE 25 24 25 96% 100% 4% <br /> ' D/M/P-XYLENES 75 72 75 96% 100% 4% <br /> LCS = Laboratory Control Spike <br /> LCSD = Laboratory Control Spike Duplicate <br /> RPD = Relative Percent Difference <br /> CONC = Concentration <br /> r <br />