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1 <br />' AGCULABS, INC <br />' December 29 , 2000 <br /> Sample Log 22140 <br /> 1 QC Report for EPA 8020 & Modified EPA 8015 <br /> Run Log : 2198U <br /> From : San Joaquin (Prod . # EM-2000) <br /> Sample(s) Received : 12/18/00 <br /> Matrix Spike <br /> Matrix Spike Duplicate <br /> Parameter Recovery Recovery RPD <br />' Benzene 100 105 6 <br /> Ethylbenzene 98 103 5 <br />' TPH as Gasoline 104 109 5 <br /> * RPD = Relative Percent Difference <br /> Parameter Laboratory Control Sample <br /> % Recovery <br />' Benzene 107 <br /> Ethylbenzene 107 <br />' Gasoline 106 <br />' Parameter Method Blank <br />' Benzene <0 . 50 ug/L <br /> Toluene <0 . 50 ug/L <br /> Ethylbenzene <0 . 50 ug/L <br /> Total Xylenes <0.50 ug/L <br />' TPH as Gasoline <50 ug/L <br /> 1 <br /> 1 <br />' Tom Kwka <br /> Lab bi <br /> or <br /> I <br />