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�M1 , <br /> J f r <br /> rM <br /> Alpha Analytical Laboratories Iric. 860 Waugh Lane, H-1, Ukiah, California 95482 <br /> • <br /> Order#A99062516 (707) 468-0401 Page 1 <br /> July 1,1999 <br /> Advanced Geo Environmental <br /> 4005 N. Wilson Way <br /> Stockton, Ca 95205 <br /> Quality Control RepGrIt <br /> Matrix Duplicate <br /> Spike Spike <br /> Method Recovery Recovery RPD <br /> I Blank % % % <br /> Matrix:Soil <br /> Gas ND 112.1 120 6.8 <br /> MTBE ND 84.9 95.6 11.9 <br /> Benzene ND 102.8 102.1 0.6 <br /> Toluene ND 94.9 90.4 4:8 <br /> Ethylbenzene ND 95.5 95.1 0.5 <br /> Xylenes ND 96.1 96.5 0.3 <br /> Diesel ND 97.2 95.4 6.9 <br /> Matrix: Aqueous <br /> Gas ND 93.0 88.8 4.7 <br /> MTBE ND 89.6 -88.4 1.3 <br /> Benzene ND 98.4 96:8 1.6 <br /> Toluene ND 95.6 90.8 5.2 <br /> Ethylbenzene ND 94.8 93.2 1.7 <br /> Xylenes ND 98.1 94.8 =3.5 <br /> Diesel ND 104.0 101.0 .2.9 <br /> This batch passes method quality control acceptance criteria. <br /> ND=none detected Bruce L.Gave,Laboratory',Director. <br />