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,r EL Client'ID: 020104238 QUALITY CONTROL RESULTS <br /> in Number: _ C4060062 Volatile Organics <br /> roject ID (number): 020104238.0610 Method: EPA 8020 <br /> Project ID (name): CHEVRON/Fremont Matrix: A ueous <br /> Matrix Spike and Matrix Spike Duplicate Results <br /> Matrix Matrix Matrix Spike Matrix Spike <br /> Original Spike Spike Spike Duplicate Duplicate Acceptability limits <br /> Analyte Concentration Amount Concentration Recovery, X Concentration RecoverY. X RPD. X RPD, X Recovery. % <br /> EPA 8020 GTEL Sample ID:C4060060.07 Spike ID:MO60594-3 Dup. ID:M060594-4 <br /> Units: u /L Analysis Date:05-JUN-94 05-JUN-94 05-JUN-94 Client ID:Batch QC <br /> Benzene: <br /> Toluene < 0.50 20.0 17.3 86.5 18.8 94.0 8.3 31 63-134% <br /> th3rlbenzene ..� 50 <br /> Xylenes (Total) < 0.50 60.0 58.9 98.2 65.3 109. 10.4 31 59.3-144X <br /> Notes: <br /> GTEL <br /> GTEL Concord. CA EN VI R0 N M E N 7 AL <br /> 04060052:2 1AGOVAIQAIES. INC <br />