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Cherm ENVIRONMENTAL LABORATORIES <br /> Mobile & In-Hoose Laboratories Certified by State of California <br /> Phone (408) 955-9988 / FAX (408) 955-9538 <br /> QUALITY CONTROL RESULTS <br />' <br /> Client : Geological Audit Services , Inc . <br /> 1803 West March Lane, Ste A <br />' Stockton, CA 95207 <br /> Attn: Bob Marty <br />' Analysis : 8015M/TPH, 8020 BTEX <br />' Date of Analysis 11/21/94 <br /> Laboratory Sample # : SD112194 . 1 <br />' Project Name: GEWEKE <br /> Sample Spike MS Rec . MSD Rec Rel <br /> Conc . Conc #1 #2 Diff <br /> (Ppm) (Ppm) (ppm) ( % ) (Ppm) ( % ) ( % ) <br /> 8015M/TPH 0 800 852 107 883 110 3 <br />' Benzene 0 3 . 48 3 27 94 3 36 97 3 <br /> Toluene 0 3 . 48 3 . 29 95 3 51 101 6 <br />' Ethyl Benzene 0 3 . 48 3 51 101 3 65 105 4 <br /> Xylenes 0 6 . 96 6 . 86 99 7 21 104 5 <br /> 1 <br /> Reviewed and approved by QS►` a3 �' <br /> rge sai, LaVTYrMory Director <br /> 780 Montague Expressway, Suite 404, San Jose, CA 95131 <br />