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r <br /> r <br /> • <br /> ka- <br /> AlphaY Anal tical Laboratories Inc 860 Waugh Lane, H 1, Uriah, California 95482 <br /> ` <br /> (707) 468 0401 <br /> rApril 17 , 1997 Page 1 <br />' Kevin McKibben <br /> Advanced Geo Environmental <br /> 1803 W March Ln, #A <br /> rStockton, CA 95207 <br /> Quality Control Report <br /> Batch Number: 97-0411-011 <br /> r Method Matrix Duplicate <br /> Blank Spike Spike <br /> Recovery Recovery Recovery RPD <br /> r % % <br /> Matrix: Water <br /> Methyl Tertiary Butyl Ether ND 99 . 6 88 . 3 12 . 0 <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 />' This Batch asses method quality control acceptance criteria. <br /> p <br />' ND = none detected <br /> r <br /> r <br /> r <br /> Bruce L Gave / f <br /> Laboratory Director Date Printed 4/17)97 <br /> r <br /> r <br />