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CHROMALAB, INC . <br /> 5 DAYS TURNAROUND <br /> Environmental Laboratory(1094) <br /> May 26, 1993 ChromaLab File No. : 0593197 <br /> Submission #: 9305000227 <br /> THE MARK GROUP <br /> Attn: Thomas C. Jones <br /> RE: Four soil samples for Gasoline and BTEX analysis <br /> r <br /> Project Name: NOR-CAL <br /> Project Number: 911177102 . 30 <br /> Date Sampled: May 19, 1993 Date Submitted: May 19 , 1993 <br /> Date Analyzed: May 20, 1993 <br /> RESULTS: <br /> Ethyl Total <br /> Sample Gasoline Benzene Toluene Benzene Xylenes <br /> I.D. (mg/Kgl (ug/Kgl (Ug/Kg) (mg/Kg) (ag1Kc0 <br /> SW1 N.D. N.D. N.D. N.D. N.D. <br /> NW2 N.D. N.D. N.D. N.D. N.D. <br /> SE3 N.D. N.D. N.D. N.D. N.D. <br /> NE4 55 N.D. N.D. 50 310 <br /> iBLANK N.D. N.D. N.D. N.D. N.D. <br /> SPIKE RECOVERY 92% 92% 105% 92% 102% <br /> DUP SPIKE RECOVERY ---- 114% 103% 103% 103% <br /> DETECTION LIMIT 1. 0 5. 0 5.0 5. 0 5. 0 <br /> METHOD OF ANALYSIS 5030/8015 8020 8020 8020 8020 <br /> ChromaLab, I <br /> r <br /> Billy ach Eric Tam <br /> Analytical Chemist Laboratory Director <br /> cc <br /> i' <br /> 2239 Omega Road,#1 • San Ramon, California 94583 <br /> (510) 831-1788 0 Facsimile (510) 831-8798 <br /> r_nrlor?I Ill ffrR_01 &01 r-+7 <br />