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-ems. �_ �_, 'yrs•-. � - �"=- 2- <br /> SEQUOIA <br /> U IA A ALYTICAL <br /> 680 Chesapeake Drive • Redwood City,CA 94063 <br /> (415)364-9600 FAX(415)364-9233 <br /> M <br /> x Cl.ent ProsecttD:W0383ain treet ,Reeves Exxon0 S <br /> Escalon,CA 95320 R <br /> entlon• Lois Frantz QC Sample r <br /> U : 1123903 3905 �� - <br /> ::- <br /> �- QUALITY CONTROL DATA REPORT <br /> I <br /> ANALYTE E>hye <br /> Benzene Toluene benzene Xylenes <br /> Method: EPA SM EPAao20 EPA 8020 EPASM <br /> Analyst: C.Donohue C.Donohue <br /> Reporting Knits: mg/',Vq m C.Donohue C.Donohue <br /> Date Analyzed: Dec 27, t991 CeO z 991 Dee 2 1991 Dec rrlkg991 <br /> CC Sample#: GBlJC122791 GBM22791 GBM2279i GefJc122'rst <br /> �a - <br /> �.. Sample Cone.: N.D. N.D. N.D. N.D. <br /> Spike Cane. <br /> 1 Added: 0.20 0.20 0.20 0.60 <br /> bF+ <br /> Cone.Matrix <br /> Spike: 0.16 0.18 <br /> 0.18 0.54 <br /> Matrix Spike <br /> %Recovery: 90 90 90 90 <br /> Cone.Matrix <br /> Spike Dup.- 0.17 0.17 0.17 0.50 <br /> Matrix Spike <br /> Duplicate <br /> �- %Recovery: 85 85 85 83- _ <br /> Relativa:-- -------- <br /> -- ---- -----`--a,6 Difference: ----5.7------- --- 5.7 5.7 7.7 ------ . ----------- ----- ---- <br /> SEOUOI;ANALYTICAL %Recovery: <br /> one.of M.S.•Conc.Of Sample x 100 <br /> Spike GOnc.Added <br /> (VVI 10 RCone.%D�fterence: one.of M.S.-Canc.of M.S.p, x 100 <br /> ri L {Cone.of M.S. +Cone.of M.S.D.}7 2 <br /> P j ct Manager <br /> 112=,W/, c7a y1 <br />