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SEQUOIA ANALYTICAL-SAC. 9169210100 P. 07 <br /> SEQUOIA ANALYTICAL <br /> lie 819 Striker Avenue, Suite 8 • Sacramento, CA 95834 <br /> (91 S) 921-9600 * FAX (916) 921-0100 <br /> EMCON Asaociates Client Project ID Shall,t32o west Chartor Way,Sbaakton. <br /> I1 1433 N Market Blvd <br /> Sacrarnertto, CA 9r, W4 <br /> Attentlon• ShelIa Kruse OC Sample GTyp <br /> 2050012-18 Reported. May 18, 1992 <br /> QUALITY CONTROL DATA REPORT <br /> I ANALYTE Ethyl- <br /> Benzene Tolu*na Benzena Xylenes <br /> Method EPA SM EPA 8020 EPA 8020 FPA 8020 <br /> Analyst C Chapmern C Chapman C.Chapman C Chapman <br /> Reporting Units ppm ppm ppm PPM <br /> Date Analr d. May 14, 1992 May 14, 1992 May 14, 1992 May 14, 1992 <br /> OC Sample#: 208(10758 2050075E 20=756 2OW758 <br /> Sample Cone.: N D N D N D N D <br /> Spike Cork <br /> Added: 001 001 001 002 <br /> Cone. Matrin <br /> Spike: 00093 00089 00097 0 019 <br /> (Matrix Spike <br /> %Recovery: 93 89 97 95 <br /> Cone, Matrix <br /> Spike Dup.: 00094 00091 001 0 019 <br /> Matrix Spike <br /> ouplif;ate <br /> %Recovery: 94 91 100 95 <br /> Relative <br /> %DiHerenCe. 1 1 22 30 00 <br /> SEQUOIA ANALYT! %Aeoavery Cone of M 8 -Cone of Umple x 100 <br /> Spike Conc Added <br /> • Relative%ofterence Cone of M S •Cono of M S D x 100 <br /> Michael R Gies (Cone o!M S + Cone of M S D) 2 <br /> Laboratory Director <br /> 2pg0012.EMG <Ss <br />