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SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue * Suite LM - Concord,California 94520 <br /> (510) 686-9600 FAX (510) 686-9689 <br /> N: L <br /> kaprealian Engineering, Inc. Cl;ieni Project <br /> oject ID: Unocal, 601 E. <br /> . Kettlernan Ln.:., Lodi <br /> . : I <br /> P.O. Box 996 <br /> Benicia, CA 94510 <br /> Attention: MardoKaprealian, P.E. QC Sample Group: 1121010-1016 Reported: Jan 6, 1992 <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 8015/8020 8015/8020 8015/15020 <br /> Analyst-, J.F. J.F. J.F. J.F. J.F. J.F. J.F. <br /> Reporting Units: mg/kg MOAO mg/kg mg/kg mg/kg mg/kg mg/kg <br /> Date Analyzed: Dec 29, iggi Dec 29, 1991 Dec 29, 1991 Dec 29, 1991 Dec 29, 1991 Dec 29, 1991 Dec 29, 1991 <br /> Sample #: 112-1010 112-1011 112-1012 112-1013 112-1014 112-1015 112-1016 <br /> Surrogate <br /> %Recovery: 100 100 98 98 89 85 80 <br /> ANALYTICAL %Recovery: Gone,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.of M.S.D.)/2 <br /> Laboratory Director <br /> 1120961.KEI <16> <br />