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Accu I a bs Inc. Formerly West Laboratory <br /> Davis/Sacramento 1046 Olive Drive, Suite 2, Davis CA 95616 ■ 530-757-0920 ■ Fax 753-6091 <br /> August 27, 1998 <br /> Sample Log 18952 <br /> QC Report for EPA 8020 & Modified EPA 8015 <br /> Run Log : 4176P <br /> From : Southland #17334 Stockton <br /> Sample(s) Received : 08/26/98 <br /> Matrix Spike <br /> Matrix Spike Duplicate <br /> Parameter Recovery % Recovery RPD <br /> Benzene 111 103 7 <br /> Ethylbenzene 112 104 7 <br /> TPH as Gasoline 124 113 9 <br /> * RPD = Relative Percent Difference <br /> Parameter Laboratory Control Sample <br /> % Recovery <br /> Benzene 105 <br /> Ethylbenzene 105 <br /> Gasoline 112 <br /> Parameter Method Blank <br /> Benzene _ <0 .005 mg/Kg <br /> Toluene <0.005 mg/Kg <br /> Ethylbenzene <0. 005 mg/Kg <br /> Total Xylenes <0. 005 mg/Kg <br /> TPH as Gasoline <1 .0 mg/kg <br /> Stewart Podolsky <br /> Senior Chemist <br /> Phoenix ■ Tucson ■ North Phoenix ■ Davis/Sacramento ■ Durango 0 Golden ■ Sparks/Reno <br />