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f . 4 <br /> I <br /> TM <br /> a 24a <br /> Alpha Analytical Laboratories Inc 860 Waugh Lane, H-1, Ukiah, California 95482 <br /> (707) 468 0401 <br /> August 31, 1998 Page 1 <br /> Kevin McKibben <br /> Advanced Geo Environmental <br /> 4005 N. Wilson Way <br /> Stockton, CA 95205 <br /> I <br /> Quality Control Report <br /> Batch Number: 98-0825-014 <br />' Method Matrix Duplicate <br /> Blank Spike Spike <br /> Recovery Recovery Recovery RPD <br /> 01 01 <br /> I Matrix Soil <br /> Methyl Tertiary Butyl Ether ND 86 7 94 7 8 . 82 <br />' OU-TPGBTXE-S TPH Gasoline W/BTXE <br /> Benzene ND 95 8 93 6 2 32 <br /> Benzene ND 96 0 86 0 11 . 0 <br /> Ethylbenzene ND 106 102 3 . 85 <br /> Ethylbenzene ND 91.2 81 6 11 . 1 <br /> Toluene ND 103 99 4 3 . 56 <br /> Toluene ND 89 . 2 84 .4 5 53 <br />' TPH - Gasoline ND 80 . 7 77 . 9 3 53 <br /> Xylenes ND 114 110 3 57 <br /> Xylenes ND 96 3 90 5 6 . 21 <br /> This Batch passes method quality control acceptance criteria. <br />' ND = none detected <br /> 9 <br /> . <br /> Bruce L Dove � <br /> Laboratory Director pate Printed 8/31/9 <br /> 1 <br /> 1 <br />