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July 22 , 1998 <br /> Sample Log 18771 <br /> QC Report for EPA 8020 & Modified EPA 8015 <br /> Run Log : 4175A (Methanol Extracts) <br /> From : SL/Stockton #14117 <br /> Sample(s) Received : 07/21/98 <br /> Laboratory Control <br /> Spike Duplicate <br /> Parameter % Recovery % Recovery RPD <br /> Benzene 112 111 1 <br /> Ethylbenzene 114 114 0 <br /> TPH as Gasoline 142 140 1 <br /> Parameter Method Blank <br /> Benzene <0 . 10mg/Kg <br /> Toluene <0 . 10mg/Kg <br /> Ethylbenzene <0 . 10mg/Kg <br /> Total Xylenes <0 . 10mg/Kg <br /> TPH as Gasoline < 20mg/Kg <br />• a2 <br /> Stewart Podolelcy T--- <br /> satnior Chemlat <br /> 1046 Olive Dave, Suite 2 Davis, CA 95616 • (530) 757-0920 Fax (530) 753-6091 <br />