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SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue * Suite LM - Concord,California 94520 <br /> (510) 686-9600 FAX (510) 686-9689 <br /> .. Project <br /> .. ............. <br /> ,Kaprealian Engineering, Inc. Client Project ID: Unocal,601 E. Kettleman Ln., Lodi <br /> P.O. Box 996 <br /> Benicia, CA 94510 <br /> Mardo Kaprealian, P.E. OC Sample Group: 1120673- Reported: Jan 2, 1992 <br /> X":q <br /> QUALITY CONTROL DATA REPORT <br /> SURROGATE <br /> EPA EPA EPA EPA EPA EPA EPA <br /> Method: 8015/8020 801518020 8015/8020 8015/9020 8015/8020 8015/8020 8015/8020 <br /> Analyst: J.F. J.F. J.F. J.F. J.F. J.F. J.F. <br /> Reporting Units: mg/kg mg/kg Mg/kg mg/kg mg/kg mg/kg mg/kg <br /> Date Analyzed: Dec 23, 1992 Dec 23, 1992 Dec 23, 1992 Dec 23, 1992 Dec 23, 1992 Dec 23, 1992 Dec 23, 1992 <br /> Sample#: 112-0673 112-0674 112-0675 112-0676 112-0677 112-0678 Blank <br /> Surrogate <br /> %Recovery: 73 74 78 82 82 82 95 <br /> EQUOIA ANALYTICAL %Recovery: Conc.of M.S.-Conc.of Sample x IDD <br /> Spike Conc.Added <br /> Relative%Difference: Conc.of M.S.-Gone,of M.S.D. X 100 <br /> Scott A. Chie <br /> 9A ffo V (Cont.of M.S. + Conc.of M.S.D.)/2 <br /> Project Manager <br /> 1120659.KEI e6> <br />