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1 <br /> - SEQUOIA ANALYTICAL <br /> 680 Pe ke Drive Redwood City,CA 94063 <br /> (415)354-9600 • FAX(415)364-9233 <br /> [Waterwork Client Project iD x`376 <br /> ain Street <br /> ,CA 95320 <br /> n Tina Le Pa t]C Sam eta 10843af3-10 R 27. 1991 <br /> QUAU1TY CONTROL DATA REPORT <br /> ANALYTE Ems_ <br /> Benzene Toluene benzene Xylenes <br /> Method EPA 5020 BPA 8= EPA 8020 EPA 80¢0 <br /> An$IySt. L LW M = L Udkh T*n L Wkhtman L Udkhbmn <br /> Reporting Units, Pg/L PDX AWL µg/L <br /> Date Analyzed Aug 23, 1991 Aug 23, 1991 Aug 23, 1991 Aug 23 1991 <br /> OC Sample GBLKW=1 GBLK05239i GBLKOS2391 GZLKD&'39i <br /> Sample Cana: N D N D N D N D <br /> Spike Conc. <br /> - Added. 10 10 10 30 <br /> �y Conc Matrix <br /> Spike i 1 1 t 10 32 <br /> Matrix Spike <br /> %Recovery: 110 110 100 110 <br /> o-� <br /> Conc Matrix <br /> Spike Dup• 11 11 10 32 <br /> Matrix Spike <br /> Duplicate <br /> •Recovery. 110 110 100 110 <br /> Relative <br /> •Difference: 00 00 00 00 <br /> StcCU9fA ANALY TICAL �e Flecowry Cann of M S Cone o1 Sampl• x too <br /> Spike Cone AddW <br /> C��L�C.Tut .C✓� Palau"%DNhrano• Cana ax M S -Cone of M S.D x 100 <br /> EI beth w Flackl Cont a1 M S +Cone a MSD)/2 <br /> P 0}ect Manager t084308 WAr <2> <br />