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Sequ&..A 630 Chc-saPC3kz: Drivt P'-d-ood ciry,W94063 (415) 364.9600 FAX(415) 364-9233 <br /> 404 N. Wigec Lane Walnut Creek, CA 9-098 (5W) 989.9600 FAX(5io;983-9673 <br /> Analytical 319 Striker Avenue, Sui tc 8 Sacramento, CA 95334 (9:6) 921-9600 FAX(916)921-0100 <br /> Brown & C <br /> a.dd..... <br /> well 66-t-Prolect ID:-"Ar"c...0-645b, Stockton.. ...... <br /> 9616.Micron Ave., Suite 600 Matrix. Soil <br /> Sacramento, CA 95827 <br /> Attention: Steve Misner <br /> QCSample Group 5100268-291 Reported: Oct 20, 1995':" <br /> .............. .............. ................ <br /> . .......... ...... ......... <br /> .............-.......... <br /> .. ....... <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: C.Chapman C.Chapman C.Chapman C.Chapman <br /> Concentration <br /> Spiked: 0.20 mg/kg 0.20 mg/kg 0,20 mg/kg 0.60 mg/kg <br /> 'LCS Batch#: LCS101795 LCS101795 LCS101795 LCS101795 <br /> Date Prepared: 10/17/95 10/17/95 10/17/95 10/17/95 <br /> Zate Analyzed: 10/17/95 10/17/95 10/17/95 10/17/95 <br /> Instrument I.D.#: GCHP-2 GCHP-2 GCHP-2 GCHP-2 <br /> LCS % <br /> Recovery: 101 100 101 100 <br /> Control Limits: 75-125 75-125 75-125 75-125 <br /> .................... <br /> ... ..... ...................... - . .. .. -'...-::1" ..--:m <br /> ::: , .............. ........ <br /> ................ ................. <br /> .......... X X .. ....... . <br /> . ... . ... ............ <br /> .......... <br /> MS/MSD <br /> Batch #: 5100365 5100365 5100365 5100365 <br /> Date Prepared: 10/17/95 10/17/95 10/17/95 10/17/95 <br /> Date Analyzed'. 10/17/95 10/17/95 10/17/95 10/17/95 <br /> Instrument I.D.#: GCHP-2 GCHP-2 GCHP-2 GCHP-2 <br /> Matrix Spike <br /> % Recovery: 98 98 99 97 <br /> Matrix Spike <br /> Duplicate % <br /> Recovery: 90 92 93 89 <br /> Relative% <br /> Difference: 8.5 6.3 6.3 8.6 <br /> SEQUOIA ANALYTICAL <br /> Please Note: <br /> 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 /> Janet rlan validation of sample batch results. Due to matrix effects,the CC limits for MS/MSDrs are advisory only <br /> et r <br /> Project <br /> r <br /> roji4ectanager and are not used to accept or reject batch results. <br /> 5100288.BRS <3> <br />