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F <br /> ,i <br /> CHEMTECH ANALYTICAL LABORATORIES -' <br /> ANALYSIS REPORT <br /> CLIENT: Western Geo CONTACT: G. Convers%g <br /> Date Samples Received: 10-10-90 P.O. 0: <br /> Date of Analy::s: 10-11-90 CT ID: 1565 <br /> Sal"Ple ID: <br /> Lab :D: LCS, LCSD <br /> M&c.rix: Soil <br /> BTEX MATRIX SPIKE SUMMARY <br /> RUN DATE: 10-11-90 <br /> CONC UNITS: rag/kg (ppm) <br /> SAMPLE SPIKED: LCS, LCSD-(1565) <br /> COMPOUND CONC CONC PERSEHT <br /> SPIKED MEASURED RECOVERY RPD <br /> MS MSD MS MSD <br /> BENZENE 1.25 2.05 1.77 164% 142% 14% <br />�s <br /> TOLUENE 1.25 0.93 0.82 74% 66% 11% <br /> ETHYLBENZENE 1 .25 0.72 0.63 58% 50% 15% <br /> _ O/M/P-XYLENES 3.75 2.09 1.85 _56% 49% 13% _ <br /> MS a Matrix Spike <br /> MSD s Matrix Spike Duplicate <br /> RPD Relative Percent Difference <br /> CONC $ Concentration <br /> Oil <br /> 1 <br /> 3017, KILGORE ROA0,0110 a RANCHO CORDOVA CA 95742 PHONE k916, 635 3962 • FAX (416) 635 9331 <br />