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,a <br /> ` SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive * Redwood City, CA 94063 <br /> (415) 364-9600 FAX (415) 364-9233 <br /> fRESNA f'v:,.:.n,n.n,�nn n .r,r�,w r.'rh{<; `{� ,-` �=,.,` v, "" A< � , = r,,:x �<rv..,. - , ,n , „ , ,n., 3,,.•r,>,mr<vx, .w 4 <br /> A Client Project IDr JB TerminalTracy <br /> u <br /> 1 1710 Main Street Matrix Soil <br /> Escalon, CA 95320 <br /> Attention Lois Frantz _ CC Sample Group 3D49301 Reported Apr 21, 1993 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl- <br /> Benzene Toluene Benzene Xylenes <br /> Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Analyst: R Geckler R Geckler A Geckler R Geckler <br /> Conc.Spiked: 020 020 020 060 <br /> Unds: mg/kg mg/kg mg/kg mg/kg <br /> LCS Batch#: GBLK041493 GBLKD41493 GBLK041493 GBLK041493 <br /> Date Prepared: 4/14/93 4/14/93 4/14/93 4/14/93 <br /> Date Analyzed: 4/16/93 4/16/93 4/16/93 4/16/93 <br />•Instrument I D.#: GCHP-7 GCHP-7 GCHP-7 GCHP-7 <br /> LCS% <br /> Recovery: 100 100 95 98 <br /> Control Ljmds: 60.140 60-140 60-140 60-140 <br /> { .-. bcx r.0?�.n ♦,O,v n Y4� ' ' `. . r ., , . } ryti Yt ,S�v v,u{4 }r rr�i . ry } i rv�.1 ..., <br /> MS/MSD <br /> Batch#: 3D38402 3D3W2 3D38402 3D38402 <br /> Date Prepared: 4/14/93 4/14/93 4/14/93 4/14/93 <br /> Date Analyzed: 4/16/93 4/16/93 4/16/93 4/16/93 <br /> Instrument I.D.#: GCHP-7 GCHP-7 GCHP-7 GCHP-7 <br /> Matrix Spike <br /> %Recovery: 35 35 55 78 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 70 73 118 141 <br /> Relative% <br /> Difference: 67 70 73 57 <br /> SEQUOIA ANALYTICAL Please Note <br /> The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> preparation and analybcal 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 /> d are not used to accept or reject batch results <br /> r <br /> Prole ager 3D49301 WAT <2> <br />