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AMERICAN <br /> m <br /> ! LABORATORY QCZOA REPORT <br /> ANAIYTiCS <br /> Client: Thrifty Oil Co. Sample Matrix: Water <br /> Method: EPA 8015M (Gasoline) , QC, Spike Date Analyzed: 8/12/92 <br /> AA Project No. : A135172-2 Date Reported: 8/17/92 <br /> Spike Spike/Duplicate <br /> Recovery Recovery RPD <br /> M M (t) <br /> 60 65 8 <br /> - <br /> RPD = Relative Percent Difference, 100( (x, - X2) (X1 + x7)/2}] ~~~~~-� <br /> Larry L. Schaleg , Ph. D. <br /> Laboratory Director <br /> ff <br /> American Analytics • 9765 Eton Avenue, Chatsworth California 91311 <br /> Tel ( 818 ) 998 - 5547 • (800 ) 533 - 8378 • Fax ( 818 ) 998 - 72rR <br />