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Ac c u l a b sInc. Formerly West Laboratory ' <br /> Davis/Sacramento 1046 Olive Drive, Suite 2, Davis CA 95616 ■ 530-757-0920 a Fax 753-6091 <br /> August 25, 1998 <br /> Sample Log 18905 <br /> QC Report for EPA 602 & Modified EPA 8015 <br /> Run Log : 4176J - <br /> From : T & T Trucking (Prod . # 6271-02 ) <br /> Sample(s) Received : 08/17/98 <br /> Matrix Spike ' <br /> Matrix Spike Duplicate <br /> Parameter— Recovery o Recovery RPD <br /> Benzene 107 95 12 <br /> Ethylbenzene 106 97 9 <br /> TPH as Gasoline 119 109 9 t <br /> * RPD = Relative Percent Difference <br /> Parameter Laboratory Control Sample <br /> Recovery- <br /> Benzene 103 <br /> Ethylbenzene 106 <br /> Gasoline 115 - <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 /> Stewart podolsky <br /> Senior Chemist <br /> Phoenix ■ Tucson a North Phoenix a Davis/Sacramento ■ Durango ■ Golden s Sparks/Reno <br />