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Alpha Analytical Laboratories Inc. 860 Waugh Lane, H-1, Ukiah, California 95482 <br /> (707) 468-0401 <br /> June 15, 1993 <br /> Geological Audit Services <br /> 1803 W. March Lane, Suite. A <br /> I Stockton, CA 95207 4 <br /> _ I <br /> Attn: Bob Marty. <br /> Subject: Quality Control Report 93-06101-001 <br /> QC SET CWH 12047 <br /> MATRIX - SOIL <br /> r <br /> Method Matrix Duplicate <br /> Blank Spike ; Spike <br /> Recovery Recovery if Recovery RPD <br /> 1 b % % b <br /> Gasoline ND 78. 31 80. 6 2 .9 <br /> Benzene ND 84 . 5 82 . 3 2 . 6 <br /> Toluene ND 86 . 0 84 . 2 2. 1 <br /> Ethylbenzene ND 81. 4 79. 3 2 . 6 <br /> Xylenes ND 85. 1 83 . 3 2. 1 <br /> QC SET - CWH 120416 �((( <br /> Gasoline ND 98. 8 107 8.0 <br /> Benzene ND 103 103 - <br /> Toluene ND 97 . 4 95. 7 . 1,. 3 <br /> Ethylbenzene ND 88. 9 86. 2 3. 1 <br /> Xylenes ND 87 .5 84 .-3 3 .7 <br /> OC SET MEG 8139k <br /> Diesel ND 83 . 5 82 . 0 1.8 <br /> 'OC SET MJS 3/4801 <br /> EPA 8010 <br /> Bromomethane ' ND 110 113 2.7 <br /> Methylene ND 119, 121 1. 6 <br /> Chloride C <br /> Trans-1. 2-DCE ND 116 115 0.4 <br /> Chloroform ND 103 97 4. 1 <br /> a <br />