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00060�w <br /> Alpha Analytical Laboratories Inc • 860 Waugh Lane, H 1, Ukiah, California 95482 <br /> (707) 468 0401 <br /> October 28, 1992 <br /> Mr. Bob Marty <br /> Geological Audit Services <br /> 1803 W. March Ln. <br /> Suite A <br /> Stockton CA 95207 <br /> Subject: Quality Control Report <br /> C BATCH NUMBER - CWH 10113 <br /> TEST DATE -- 9 12 92 <br /> MATRIX - WATER <br /> Method Matrix Duplicate <br /> Blank Spike Spike <br /> Recovery Recovery Recovery_ BPD <br /> % $ % % <br /> Benzene ND 95. 2 95 . 6 • 4 <br /> Toluene ND 96. 0 96. 6 . 6 <br /> Xylenes ND 95 . 8 97 . 4 1.7 <br /> Ethlybenzene ND 95 . 7 96 . 9 1 . 2 <br /> Gasoline ND 98 . 6 94 . 6 4 . 1 <br /> OC BATCH NUMBER - MEG 8022 <br /> TEST DATE - 9 1192 <br /> MATRIX - WATER <br /> Diesel ND 102 101 1 . 0 <br /> Note: This batch passes method quality control acceptance <br /> criteria . <br /> ND = none detected <br /> ALPHA ANALYTICAL LABORATORIES, INC. <br /> Bruce L. dove <br /> Laboratory Director <br />