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1la W <br />' 21 <br /> H1 <br /> Alpha Analytical Laboratories Inc 860 Waugh Lane, Ukiah, California 95482 <br /> (707) 468 0401 <br /> March 10, 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 97-0303-004 <br />' Method Matrix Duplicate <br /> Blank Spike Spike <br /> Recovery Recovery Recovery RPD <br /> 0 0 0 0 <br /> Matrix: Soil <br /> Methyl Tertiary Butyl Ether ND 97 5 97 5 0 00 <br />' OU-TPGBTXE-S TPH Gasoline W/BTXE <br /> Benzene ND 89 8 87 7 2 37 <br /> Benzene ND 74 . 4 74 4 4 00 <br />' Ethylbenzene ND 97 7 94 2 3 65 <br /> Ethylbenzene ND 96 . 3 102 5 75 <br /> Toluene ND 94 . 2 91 6 2 8 <br />' Toluene ND 87 . 5 87 8 342 <br /> TPH - Gasoline ND 81 . 0 74 4 8 49 <br /> Xylenes ND 96 . 7 93 7 3 . 15 <br />' Xylenes ND 94 5 92 9 1 71 <br /> This Batch passes method quality control acceptance criteria <br />' ND = none detected <br /> Bruce L Gove <br /> Laboratory Director Date Printed 3/10/97 r <br />