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04 Ace u l a b s Inc. Formerly West Laboratory <br /> Davis/Sacramento 1046 Olive Drive, Suite 2, Davis CA 95616 a 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 : 2174C <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 110 103 7 <br /> Ethylbenzene 111 101 9 <br /> TPH as Gasoline 108 103 5 <br /> * RPD = Relative Percent Difference <br /> Parameter Laboratory Control Sample <br /> Recovery <br /> Benzene 99 <br /> Ethylbenzene 95 <br /> Gasoline 99 <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 /> Steven Podolsky <br /> Senior Chemist <br /> I <br /> Phoenix ■ Tucson ■ North Phoenix ■ Davis/Sacramento ■ Durango ■ Golden a Sparks/Reno <br />