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SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City, CA 94063 <br /> (415) 364-9600 FAX(415) 364-9233 <br /> fRESNA Client P ,r yr� ,Y <br /> roject'ID 540o&66, CocaCola Stockton >n <br /> 1710 Main Street Matruc Liquid <br /> Escalon, CA 95320 rv° <br /> t <br /> Attention Jeanne Homsey QC Sample Group 3B2302 <br /> n t ,Pl G,} Reported Jul 26, 1993 <br /> 4 v �. . • v r ` ry rr'r r .YL•v <br /> ` +- nrr rr ` +-vr v v i �♦.v rr J <br /> iQUALITY CONTROL DATA REPORT <br /> ' ANALYTE Ethyl- <br /> Benzene Toluene Benzene Xylenes <br /> Method: EPA 8020 EPA 13020 EPA 8020 EPA 8020 <br /> Analyst: A Miraftab A.Miraftab A.Miraftab A Miraftab <br /> Conc. Spiked 10 10 10 30 <br /> Units: pg/L mg/L Ng/L lig/L <br /> LCS Batch#: BLK072493 BLK072493 BLK072493 BLK072493 <br /> ' Date Prepared: <br /> Date Analyzed: 7/24/93 7/24/93 7/24/93 7/24/93 <br /> Instrument I.D.#. GCHP-3 GCHP-3 GCHP-3 GCHP-3 <br /> LCS% <br /> Recovery: 93 93 94 93 <br /> ' Control Limits: 80.120 80-120 80-120 80-120 <br /> vn.G+}r�r'u,. S n Avf `/v6 w rrvY rr+nvrw xv r vire }y5 r Y3+. <br /> � r� r v O' `r vkn+vvy} r { A +.vn qC.r , ^yl�r w.w+.y..v+SvvavNn♦ v rnvry n inn <br /> vx O.ti r k r. v }vv}' vv+[v vn r vv v kxJ titi��.'�ry `v}v ~ v n ♦ r}v h r "`vv }' v v r' „ r v+4, . <br /> .n r JS t x vv w r v[3vvv rS'v.N}v h r.r vW w rk v ver n '}iY+nl v v v v <br /> MS/MSD <br /> Batch#. 3GA3803 3GA3803 3GA3803 3GA3803 <br /> Date Prepared: - - - - <br /> Date Analyzed: 7/24/93 7/24/93 7/24/93 7/24/93 <br /> Instrument I.D.#: GCHP-3 GCHP,3 GCHP-3 GCHP-3 <br /> ' Matrix Spike <br /> %Recovery. 110 100 100 103 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery. 98 98 99 100 <br /> Relative% <br /> Difference: 12 2 0 10 30 <br /> ' SEQUOIA ANALYTICAL Please Note <br /> k The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> 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 QC limits for MS/MSD's are advisory only <br /> Vickie Tague and are not used to accept or reject batch results <br /> ' Project Manager 3GS2301 WAT a3> <br />