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AMERICAN ' <br /> } <br /> r \ LABORATORY QAJQC REPORT <br /> ANALYTICS <br /> Client: Thrifty oil Company Sample Matrix: Water <br /> Method; EPA 8020 (BTEX) , QC, Spike Date Analyzed: 8/13/92 <br /> AA Project No. : A135172-2 Date Reported: 8/17/92 <br /> Spike spike/Duplicate ~~-~~~~�~��~~~ <br /> Compounds Recovery Recovery RPD <br /> (-%) CO ($) <br /> Benzene 95 93 2 . 1 <br /> Toluene 82 84 2 .4 <br /> Ethyl Benzene 82 78 5 <br /> Total Xylenes 87 $0 8 .4 <br /> y <br /> RPD = Relative Percent Difference, 100[ (x, - x2)/( (x, y+~x2)/2 ) ]~---....~~ <br /> Larry L. Schalege Ph.D. <br /> Laboratory Director <br /> ff <br /> American Analytics • 9765 Eton Avenue, Chatsworth California 91311 <br /> Tel ( 818 ) 998 - 5547 . (800 ) 533 - 8378 • Fox ( 81R � ooa - 7 ,) Aa <br />