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r� <br /> CHEMTECH ANALYTICAL LABORATORIES <br /> ANALYSIS REPORT <br /> CLIENT= Western Geo CONTACT: G. Converse <br /> Date Samples Received: 03-29-91 P.O. #: <br /> Date of Analysis: 04-02-91 CT IDs 1803 <br /> Lab 10: LCS, LCSD <br /> Matrix: Water <br /> STEX LABORATORY CONTROL SPIKE SUMMARY <br /> RUN DATE: 04-02-91 <br /> CONC UNITS: ug/L ( ppb ) <br /> SAMPLE SPI KED: LCS, LCSD-( 1803 ) <br /> COMPOUND-------CONC ----CONC--------PERCENT------5 ------ <br /> SPIKED MEASURED RECOVERY RPO <br /> -------- -------- <br /> ___-- <br /> LCS LCSD LCS LCSD <br /> BENZENE --------25------H--23------- 6i---------- <br /> TOLUENE 25 24 23 96% 92% 4% <br /> ETHYLBENZENE 25 26 26 104% 104% 0% <br /> O/M/P-XYLENES 75 77 77 103% 103% 0% <br /> LCS = Laboratory Control Spike <br /> LCSD c Laboratory Control Spike Duplicate <br /> APO = Relative Percent Difference <br /> CONC a Concentration <br /> � 1 <br /> • 3017 KICGORE}COAD#1110 0 AANCHO CORDOVA CA 95742 PHONE (916) 6353962 o PAX(916)6359331 <br />