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Ila Ia <br /> Alpha Analytical Laboratories Inc • 860 Waugh Lane, H-1, Ukiah, California 95482 <br /> (707) 468 0401 <br /> April 22 , 1994 Page 1 <br /> Bob Marty <br /> Geological Audit Services <br /> 1803 W March Ln, #A <br /> Stockton, CA 95207 <br /> Quality Control Report <br /> Batch Number: <br /> 94-0408-003 Soil <br /> Method Matrix Duplicate <br /> Blank Spike Spike <br /> Recovery Recovery Recovery RPD <br /> Matrix: Soil <br /> OU-TPGBTXE-S TPH Gasoline W/BTXE <br /> Benzene ND 109 108 . 922 <br /> Benzene ND 100 100 0 . 00 <br /> Ethylbenzene ND 107 106 . 939 <br /> Ethylbenzene ND 96 . 5 93 . 3 3 . 37 <br /> Toluene ND 114 113 . 881 <br /> Toluene ND 105 99 . 4 5 . 48 <br /> Xylenes ND 112 ill . 897 <br /> Xylenes ND 100 91 . 2 9 . 21 <br /> TPH - Gasoline ND 106 102 3 . 85 <br /> VO-EPA8010-S Halogenated Volatile Organics <br /> Chloroform ND 93 . 0 88 . 0 5 . 52 <br /> trans-1, 2-Dichloroethylene ND 109 109 0 00 <br /> 1, 4-Dichlorobenzene ND 89 . 0 87 . 0 2 . 27 <br /> Methylene Chloride ND 99 . 0 99 0 0 . 00 <br /> Tetrachloroethylene ND 101 102 . 985 <br /> This Batch passes method quality control acceptance criteria. <br /> lND = none detected <br /> Bruce L Gove <br /> Laboratory Director Date Printed 4/22/94 <br />