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SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City, CA 94063. <br /> (415) 364-9600 FAX (415) 364-9233 <br /> Kaprealjan Engineering, Inc. Client Project ID: Unocal, 3788 Tracy Blvd.,Tracy Sampled: Jun 18, 1990 <br /> €:-P.O. Box 996 Sample Descript: Soil, W.C.1 Received: Jun 19, 1990;_ <br /> -:Benicia, CA 94510 Analysis Method: EPA 8270 &'Open Scan' Extracted: Jun 19, 1990 ':1 <br /> Attention: Mardo Kaprealian, P.E. Lab Number: 006-2687 Analyzed: Jun' 20, 1990 <br /> Reported Jun 20 1990 : <br /> SEMI-VOLATILE ORGANICS by GC/MS, TENTATIVELY IDENTIFIED COMPOUNDS <br /> Analyte Detection Limit Sample Results <br /> Ng/kg pg/kg <br /> Polychlorinated Biphenyls................................................ 250. ..................................... N.D. <br /> I <br /> j <br /> I <br /> I <br /> ' 'd b C� �1� �:,'�' C �a 1�• �bv <br /> OCT S 1 10109 <br /> .�-��qr-.I M1 tr I TL.I <br /> E"iV!R(,Ni`,i_rrTA H"d.-: 11 <br /> I <br /> SEQUOIA ANALYTICAL Please Note: <br /> All identifications are tentative and concentrations are estimates based upon spectral <br /> comparison to the EPA NIST library. Positive identification or specification between - <br /> isomers cannot be made without retention time standards. <br /> Belinda C.Vega <br /> Project Manager e2687.KE1 <7> <br />