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ka- <br /> Alpha FAnalytical Laboratories Inc 860 Waugh Lane, H 1, Ukiah, California 95482 <br /> (707) 468 0401 <br />' April 15, 1997 Page 1 <br />' Kevin McKibben <br /> Advanced Geo Environmental <br /> 1803 W March Ln, #A <br />' Stockton, CA 95207 <br />' Quality control Report <br /> Batch Number: 97-0411-012 <br />' Method Matrix Duplicate <br /> Blank Spike Spike <br /> Recovery Recovery Recovery RPD <br /> Matrix: Water <br /> OU-TPGBTXE-W TPH Gasoline W/BTXE <br /> Benzene ND 71. 1 67 . 8 4 .75 <br /> Ethylbenzene ND 103 99 . 2 3 . 76 <br /> Toluene ND 94 . 2 90. 0 4 . 56 <br /> TPH - Gasoline ND 76. 5 70. 0 8 .87 <br /> Total Xylenes ND 110 100 9 . 52 <br /> OU-TPHDMO-W TPH - Diesel & Motor Oil <br /> TPH - Diesel ND 83 . 1 90 . 3 8 . 3 <br /> TPH -- Motor Oil ND 84 . 1 91 . 2 8 . 1 <br />' This Batch passes method quality control acceptance criteria . <br />' ND = none detected <br /> Bruce L Gove <br /> Laboratory Director Date Printed. 4/15/"97 <br />