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SEQUOIA ANALYTICAL <br /> 1900 Sates Avenue - Suite LM - Concord,California 94520 <br /> (510) 686-9600 FAX (510) 686-9689 <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 . OC Sample Group: 1120989-995 Reported: Jan 6, 1992 <br /> QUALITY CONTROL DATA REPORT <br /> SURROGATE <br /> EPA EPA EPA EPA EPA EPA EPA <br /> Method: 8015/6020 8015/8020 8015/8020 8015/8020 8015/8020 8015/8020 8015/6020 <br /> Analyst: J.F. J.F. J.F. J.F. JIT. 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 29, 1991 Dec 29, 1991 Dec 29, 1991 Dec 29, 1991 Dec 29, 1991 Dec 29, 1991 Dec 29, 1991 <br /> Sample #: 112-0989 1120990 112-M1 112-0992 112-M3 1124)994 112-M5 <br /> Surrogate <br /> % Recovery: 97 93 98 98 98 98 100 <br /> SEQUOIA ANALYTICAL %Recovery: Cone.of M.S.-Cone.of Sample X 100 <br /> Spike Cone.Added <br /> Relative%Difference; Gone.of M.S.-Cone.of M.S.D. x IDD <br /> Belinda C. Vega (Cone.of M.S. + Cone.of M.S.D.)/2 <br /> Laboratory Director <br /> 1120961.KEI <13> <br />