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AUC-31-99 TUE 04. 04 PM ACCULABS DAVIS FAX NO. 530 753 6091 P, 01/06 <br /> Acculabs Inc. August 31 , 1999 <br /> Sample Log 20493 <br /> QC Report for EPA 602 & Modified EPA 8015 <br /> Run Log : 4187X <br /> j <br /> From : STHL/Country Club Rd. (Prof . # 779966 . 63040000 ) <br /> Sample (s) Received : 08/30/99 <br /> Matrix Spike <br /> ' Matrix Spike Duplicate <br /> Parameter o Recovery % Recovery RPD <br /> Benzene 112 109 3 <br /> Ethylbenzene 108 110 2 <br /> TPH as Gasoline 108 112 4 <br /> * RPD = Relative Percent Difference <br /> Parameter Laboratory Control Sample <br /> Recovery <br /> Benzene 108 <br /> Ethylbenzene 109 <br /> Gasoline 114 <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 /> 1 <br /> Tom Kv <br /> 7 <br /> I <br />