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SEQUOIA ANALYTICAL <br /> 1900 SEQUOIA <br /> - Suite LIM - Concord,California 94520 <br /> (510) 686-9600 FAX (510)686-9689 <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 Kapreallan, P.E. OC Sample Group: 1121017-1023 Reported: Jan 6, 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 8015/8020 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 rrtg/kg 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 #: 112-1017 112-1018 112-1019 112-1020 112-1021 112-1022 112-1023 <br /> Surrogate <br /> %Recovery: 86 81 84 82 82 82 77 <br /> SEQUOIA ANALYTICAL %Recovery: Cone.of M.S.-Conc.of Sample X 100 <br /> Spike Conc,Added <br /> Relative%Difference: Conc.of M.S.-Conc.of M.S.D. X 100 <br /> Belinda C. Vega (Conc.of M.S. + Conc.of M.S.D.)/2 <br /> Laboratory Director <br /> 1120961.KEI <17> <br />