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SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City, CA 94063 <br /> (415) 364-9600 FAX (415) 364-9233 <br /> rx,,uu ,0wk <br /> r s,�••vs.,w '`•} 'Si�a.rar- ,rnr:,, ss. r"} ,a v_r�4x r r r.Y' ,�»st <br /> x$RESNA Client Project IDy A 054006 02, Coca-Cola, Stockton <br /> i<1710 Main Street Matn x Water <br /> N Escalon, CA 95320 Y <br /> Attention Jeanne Homseyr GSC Sample Group 3118201-3 Reported Sep 17, 1993 <br />' QUALITY CONTROL DATA REPORT <br />' ANALYTE Ethyl- <br /> Benzene Toluene Benzene X eves Diesel <br />' Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA 8015 <br /> Analyst: P Madden P Madden P Madden P Madden V H <br /> Conc. Spiked: 10 10 10 20 300 <br /> Unrts: fig/L pg/L us/L ug/L pg/L <br /> LCS Batch#: BLK091393 BLK091393 OLK091393 BLK091393 BLK090893 <br /> Date Prepared: 9/13/93 9/13/93 9/13/93 9/13/93 9/8/93 <br /> Date Analyzed: 9/13/93 9/13/93 9/13/93 9/13/93 9/10/93 <br /> Pnstrument I.D.#: GCHP-1 GCHP-1 GCHP-1 GCHP-1 GCHP-5 <br /> LCS% <br /> Recovery: 104 109 106 104 63 <br /> Control Limits: 81-113 92-121 97-121 90-112 50-150 <br /> ,� n e r t v'r�» nv.m v1Jn rtJwttl wv.rn v , n t v. r { t r n v v x t r n�ry r ,+rcr, ` r� r n rr x rxtr l x .. " .rv[v <br /> v • � ' ,..vNYT.ak�'*Y r. ��l vS vA4h 4 Stu rrW r u�Ca}. } }`y ru <br /> MS/MSD <br /> Batch#: MSo9i393 MS091393 MS091393 MS091M 3118202 <br />' Date Prepared: 9/13/93 9/13/93 9/13/93 9/13/93 9/8/93 <br /> Date Analyzed: 9/13/93 9/13/93 9/13/93 9/13/93 9/10/93 <br />' Instrument I D #: GCHP-1 GCHP-1 GCHP-1 GCHP-1 GCHP-5 <br /> Matrix Spike <br /> %Recovery: 109 116 115 107 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 106 114 113 104 <br />' Relative% <br /> Difference: 28 17 18 28 <br /> * MS MSD results affected by sample matrix <br /> EQUOIA ANALYTICAL Please Note <br /> The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> r��rn���777ttt�_ preparation and analytical methods employed for the samples The LCs%recovery data is used for <br /> [� validation of sample batch results Due to matrix effects,the OC limits for MS/MSD's are advisory Only <br /> and are not used to accept or reject batch results <br /> Vickie Tague <br />' Project Manager 3118201 WAT <3> <br />