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ti <br /> 7M <br /> A"Analytical Laboratories Inc 860 Waugh Lane, H 1, Ukiah, California 95482 <br /> (707) 468-0401 <br /> March 25, 1999 Page 1 <br /> Advanced Geo Environmental <br /> 4005 N. Wilson Way <br /> Stockton, CA 95205 <br /> Quality Control Report <br /> Batch Number: 99-0318-018 <br /> Method Matrix Duplicate <br /> Blank Spike Spike <br /> Recovery Recovery Recovery RPD <br /> 0 <br /> Matrix: Water <br /> Methyl Tertiary Butyl Ether ND 93 . 6 94 . 0 . 426 <br /> OU-TPGBTXE-W TPH Gasoline W/BTXE <br /> Benzene ND 102 100 1 . 98 <br /> M Ethylbenzene ND 94 . 8 94 . 8 0 . 00 <br /> Toluene ND 95 . 6 97 . 6 2 . 07 <br /> TPH - Gasoline ND 99 . 8 90. 0 10. 3 <br /> Total Xylenes ND 97 . 7 97 . 2 . 513 <br /> This Batch passes method quality control acceptance criteria. <br /> ND = none detected <br /> Bruce L Gose C <br /> Laboratory Director date Printed 3/25/99 <br />