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SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue * Suite LM * Concord, California 94520 <br /> (510) 686-9600 - FAX (510) 686-96139 <br /> . . . . . .... <br /> ........... <br /> Kaprealian Engineering, Inc. Client Project ID: Unocal, 601 E. Kettleman Ln., Lodi <br /> .:'P.O. Box 996 <br /> Benicia, CA 94510 <br /> ..:Attention: Mardo Kaprealian, P.E. OC Sample Group: 1120953-60 Reported: Jan 13, 1992 <br /> .. ......... . <br /> QUALITY CONTROL DATA REPORT <br /> SURROGATE <br /> EPA EPA EPA EPA EPA EPA EPA <br /> Method: 8015/8020 8015/8020 8015/8020 8015/8020 8015/6020 8015/8020 8015/8020 <br /> Analyst: K.N. K.N. K.N. K.N. K.N. K.N. K.N. <br /> Reporting Units: mg/kg mg/kg mg/kg mg/kg mg/kg Mg/kg mg/kg <br /> Date Analyzed: Jan 2, 1992 Jan 2, 1992 Jan 2, 1992 Jan 2, 1992 Jan 2, 1992 Jan 2, 1992 Jan 2, 1992 <br /> Sample #: 112-0953 112-0954 112-0955 112-0956 112-0957 112-0958 112-0959 <br /> Surrogate <br /> % Recovery: 92 92 93 92 92 96 96 <br /> &EQUOIA ANALYTICAL % Recovery: Conc.of M.S.-Conc.of Sample X 100 <br /> Spike Conc.Added <br /> -fv Relative%Difference: Conc.of M.S.-Conc.of M.S.D. X 100 <br /> Belinda C. Vega (Cone,of M.S. + Conc.of M.S.D.)72 <br /> Laboratory Director 1120953.KEI <14> <br />