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I <br /> CHEMTECH ANALYTICAL LABORATORIES <br /> ANALYSIS REPORT <br /> CLIENT: Triangle CONTACT: N. Chronis <br /> Date Samples Received: 04-19-91 P .O . #: <br /> Date of Analysis: 04-22-91 CT ID: 1845 <br /> Lab ID: LCS , LCSD <br /> Matrix : Soil <br /> BTEX LABORATORY CONTROL SPIKE SUMMARY <br /> RUN DATE: 04-22-91 <br /> CONC UNITS: ma/kg ( ppm ) <br /> SAMPLE SPIKED: LCS , LCSD-( 1845 ) <br /> -__._ _ -------------- -------------__------------------- <br /> COMPOUND CONC CONC PERCENT % -- ---- <br /> SPIKED MEASURED RECOVERY RPD <br /> ---- LCS LCSD LCS-LCSD - - <br /> BENZENE 1 .25 0 .76 0 .86 61% 69% 12% <br /> TOLUENE 1 .25 0 .87 0 .98 70% 78% 11% <br /> ETHYLBENZENE 1 .25 0 .93 1 .06 . . 74% 85% 14% <br /> O/M/P-XYLENES 3 .75 2 .80 3 .20 75% 85% 13% <br /> LCS = Laboratory Control Spike <br /> LCSD = Laboratory Control Spike Duplicate ! <br /> 4 <br /> RPD = Relative Percent Difference <br /> CONC = Concentration 1 <br /> i <br /> 3f11 KILGORE-ROAD".9110' • RANC-1-!O t;ORDOVA, CA 95742 PHOfJE (916) 635 3-9-0-2 ��FAX (9 16) 635-9331-- <br />