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SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue - Suite LM - Concord, California 94520 <br /> (510) 686-9600 FAX (510) 686-9689 <br /> Kaprealian Inc.Enginee ing, Ciient Prioj�ctb: Unocal, ............. <br /> Engineering, a[,601 E. Kettlernan Ln., Lodi <br /> P.O. Box 9% <br /> Benicia, CA 94510 <br /> Attention Mardo Kaprealian, P.E. OC Sample Group 1120982-988 Reported: Jan 6, 1992 <br /> ........... <br /> QUALITY CONTROL DATA REPORT <br /> SURROGATE <br /> EPAEPA EPA EPA EPA EPA EPA <br /> Method: 8015/8020 8015/8020 8015/8020 8015/8020 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 29, 1991 Dec 29, 1991 Dec 29, 1991 Dec 29, 1991 Dec 29, 1991 Dec 29, 1991 Dec 29, 1991 <br /> Sample 112-0982 112-0983 112-0984 112-005 112-0986 112-0987 112-0988 <br /> Surrogate <br /> %Recovery: 100 96 96 96 100 97 96 <br /> ,SEQUOIA ANALYTICAL %Rsoovery: Cone.of M.S.-Cone,of Sample x 100 <br /> Spike Cone.Added <br /> Relative%Difference: Cone.of M.S.-Cone,of M.S.D. x 100 <br /> Belinda C.Vega (Cone.of M.S.+ Cone.al M.S.D.)/2 <br /> Laboratory Director <br /> 1120961.KEI <12> <br />