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July 15, 1993 <br /> Sample Log 6779 <br /> QC Report for EPA 602 & Modified EPA 8015 <br />' From : Mid-Cal Leasing II <br /> Sample(s) Received : 06/28/93 <br />' Method Spike <br /> Method Spike Duplicate <br /> Parameter % Recovery % Recovery RPD <br /> Benzene 99 103 3 <br />' Ethylbenzene 98 98 0 <br /> TPH as Gasoline 109 110 1 <br />' * RPD = Relative Percent Difference <br /> Parameter Method Blank <br /> Benzene <0 . 30 ug/L <br /> Toluene <0 . 30 ug/L <br /> Ethylbenzene <0 . 30 ug/L <br />' Total Xylenes <0 . 30 ug/L <br /> TPH as Gasoline <50 ug/L <br /> e kilt <br /> eni r Chemist <br /> Western Environmental Science & Technology 45133 County Road 328 Davis, CA 95616 916 753-9500 FAX 916 757-4652 <br />