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47 <br /> .. January 31 , 1994 <br /> Sample Log 8490 <br /> a <br /> QC Report for EPA 602 & Modified EPA 8015 <br /> From : Project # 94-513-01 (Beacon 513) <br /> Sample(s) Received : 01/28/94 <br /> Matrix Spike <br /> Matrix Spike Duplicate <br /> Parameter o Recovery o Recovery RPD <br /> r <br /> Benzene 107 108 1 <br /> Ethylbenzene 108 107 1 <br /> TPH as Gasoline 101 97 4 <br /> * RPD = Relative Percent Difference <br /> i r <br /> Parameter Method Blank 1 <br /> Benzene <0. 30 ug/L <br /> Toluene <0. 30 ug/L <br /> Ethylbenzene <0 .30 ug/L <br /> Total Xylenes <0.50 ug/L <br /> TPH as Gasoline <50 ug/L <br /> r ` <br /> .Ica <br /> r Cch , <br /> or amlat <br /> - r <br /> Y � ' <br /> I <br /> I <br /> Western Environmental Science & Technology 45133 County Road 32B Davis, CA 95616 916 753-9500 FAX 916 757-4652 <br />