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Quality Assurance Results Summary <br /> for <br /> Clayton Project No, 91020. 19 <br /> Clayton Lab Number: 9102007.OIA Analytical Method: 6020 <br /> EPAS02/0 <br /> Date: 02/0 <br /> Ext./Prep, Method: 5030 Date: <br /> Date: Analyst: 1R <br /> Analyst: JR Sample Matrix/Media: WATER <br /> Std. Source: W256 Units: U6/L <br /> MS MSD Average <br /> Matrix Recovery Matrix Spike Recovery Recovery LCL UCL RPD UCL <br /> Anal)U Sample Result Spike Level Spike Result (%) Duplicate Result (%) (% R) (% R) (% R) (%) (%APD) <br /> BENZENE (PID) NO 10.0 8.82 88 9.01 90 89 80 120 2.5 20 <br /> ETHYLBENZENE(PID) NO 10.0 9.00 90 9.25 93 91 80 120 2.7 20 <br /> TOLUENE (PID) NO 10.0 8.78 88 9.13 91 90 80 120 3.9 20 <br /> TOTAL XYLENE(PID) NO 30.0 29.1 97 29.9 100 98 80 120 2.7 20 <br /> 1 <br /> LCS - Laboratory Control Sample LCL - Lower Control Limit UCL - Upper Control Limit <br /> ND - Not detected at or above Ilmit of detection SOR . Spike out of range due to high sample concentration. <br />