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SEQUOIA ANALYTICAL <br /> 680 Chesapeake Dave • Redwood City,CA 94063 <br /> (415) 364-9600 4, FAX(415) 364-9233 <br />�RESNA plant Project ID W0475,Weber Pt. <br /> �1710 MaFn Street <br /> <•Escalon, CA 95320 <br /> �Attentton Tina Le Page QC Sample Group- 205-5200 Re ed: .)un 2, 1992 �� <br /> �,,,A.,,,rtx,xr-• :�^ry" a :cam.-;...�� ,.c��''.,,,,�'"'�'"'�a,. �,:.�.n.,::ra�,.:.:�„x,.Ncwaxs. rrw.v.ak '"„� <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Eth* <br /> Benzene Toluene benzene Xylenes <br /> Method: EPA 8020 EPA 8x20 EPA SIM EPA 5020 <br /> Analyst: LL Miraflab A.Mraitab A.Miraftab A.Miraftab <br /> Reporting Units: Kg/L Ng/L k9/L y9/L <br /> Date Analyzed May 30, 1992 May 30, 1992 May 30, 1992 May 30, 1992 <br /> CSC Sample# GBLK053092 GBLK053092 GSLKD53092 GBLKD53092 <br /> Sample Cone.: N D N D N D N D <br /> Spike Cone. <br /> Added: 10 10 10 30 <br /> Cone. Matrtu <br /> Spike: 96 95 94 28 <br /> Matnx Spiky: <br /> % Recovery: 96 95 94 93 <br /> Cone. Matrix <br /> Spike Dup.: 10 10 10 30 <br /> Matrix Spike <br /> Duplicate <br /> %Recovery: 100 100 100 100 <br /> Relative <br /> %Difference: 4.1 5.1 62 69 <br /> SEQUOIA ANALYTICAL %tlecovery Cort of M S -Cor+c of Sample a 100 <br /> Spike Conc Added <br /> Pw4rdve%mefence Cone of MS -Conc of M S D n 100 <br /> Conc of M S + Conc of M S D) 2 <br /> eject Manager 2055200 WAr <2> <br />