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a <br /> r <br /> chem ENVIRONMENTAL LABORATORIES <br /> Mobile & !n-House Laboratories Certified by State of Califorw <br /> Phone (408) 955-9988 / FAX (408) 955-953E <br /> QUALITY CONTROL RESULTS <br /> r~ <br /> - Analysis : 8015M/TPH & 8020 BTEX <br /> Date of Analysis : 10/19/93 <br /> f <br /> Laboratory Sample # : SA101993 . 1 <br /> Client Sample # : SI-1@21 ' <br /> Sample Spike MS Rec . MSD Rec . Rel . <br /> Conc. Conc . #1 #2 Diff <br /> (ppm) (ppm) (ppm) ( % ) (ppm) (% ) ( % ) <br /> 8015M/TPH 0 300 . 0 266 . 1 89 305 . 4 102 13 <br /> Benzene 0 3 . 500 2 . 894 83 2 . 509 72 11 <br /> �• Toluene 0 3 . 500 3 . 006 86 2 . 943 84 2 <br /> f <br /> Ethyl Benzene 0 3 . 500 2 . 802 80 3 . 391 97 17 <br /> Xylenes 0 7 . 000 5 . 790 83 6 . 584 94 11 <br /> Reviewed and approved by S <br /> eor Tsai, ratory Dii7ector <br /> 780 Montsaue Expressway, Suite 404, San Jose, CA 95131 <br />