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f a ' Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364-9600 FAX(415) 364-9233 <br /> Ana�ytiea1 404 N.Iget Lane Walnut Creek,CA 94598 (510) 988.9600 FAX(510)988-9673 <br /> 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921.9600 FAX(916)921.0100 <br /> f=MC{5N Associates .-. :::.. :.,.:.:..,•::::........ .......::.:::::.:.........A�w: :a �.w:.,:<h:�:x�.,:.:r;:.<r: <br /> !lent r�ralecf l� Arcc 2186, Stocktari %'T.'O #17856 <br /> ' 1433 N. Market Blvd. Matrix: SoII <br /> Sacramento, CA 95834 <br /> Attention: Claudio Avila QC Sample Group 5090285-296 Reported: Sep 22 1995'h <br /> ' .......................r..:r.,...<.r:•;;::ox:iu;=4::r::i:>..-:.;::?�.r>.^.^::;;:::;::L:s':i::v::;::'2.aX<.'e{>.:::s•:-:t:�:;-.:r::;:°.':::;;�: %::;`:�:k:iia>ictw°+%�2'�3.kn,e•;r,`'.,:e`ii:i"s3';1:�r <br /> ' QUALITY CONTROL DATA REPORT <br /> AN Hyl- -- - <br /> Benzene Toluene Benzene Xylenes <br /> ' Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Analyst: V.Owens V.Owens V.Owens V.Owens <br /> Concentration <br /> Spiked: 0.20 mg/kg 0.20 mg/kg 0.20 mg/kg 0.60 mg/kg <br /> LCS Batch#: LCS091895 LCS091895 LCS091895 LCS091895 <br /> Date Prepared: 9/18/95 9/18/95 9/18/95 9/18/95 <br /> Date Analyzed: 9/18/95 9/18/95 9/18/95 9/18/95 <br /> Instrument I.D.#: GCHP-1 GCHP-1 GCHP-1 GCHP-1 <br /> LCS% <br /> Recovery: 100 100 100 100 <br /> Control Limits: 75-125 75-125 75-125 75-125 <br /> ..:.::.::::.�::.:: :::.. <br /> ............................:.:::::.�::.�::::•:.r::::.•:::.s:•ii:;a::::_•.r:.v..:.v:...v:::.:�:::r:.: :� i::•::;:.i:'::�i:^::::<:�::�:r:::iJ:ti�ii:isi�::��ii:•i:•:�:�:r:::isi::i::i-itt�i:iss':t'ism:.:'+::i.:::iiiii::-i:::��.-::.:::::i4::4:kvW::+5t2.'•k::i4:4:riiiiti:•:.:vii::i.':i <br />' MS/MSD <br /> Batch#• 5090286 5090286 5090286 5090286 <br /> Date Prepared: 9/18/95 9/18/95 9/18/95 9/18/95 <br /> Date Analyzed: 9/18/95 9/18/95 9/18/95 9/18/95 <br /> Instrument i.D.#: GCHP-1 GCHP-1 GCHP-1 GCHP-1 <br />' <br /> Matrix Spike <br /> %Recovery: Be 92 94 98 <br />' Matrix Spike <br /> Duplicate% <br /> Recovery: 92 96 98 100 <br />' Relative% <br /> Difference: 4.4 4.2 4.2 2.0 <br /> SEQU IA ANALYTICAL ease Note: <br /> The LCS Is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> 6t,�&_ preparation and analytical methods employed for the samples. The LCS%recovery data is used for <br /> validation of sample batch results. Due to matdx effects,the OC limits for MS/MSD's are advisory only <br /> Janet rlan and are not used to accept or reject batch results. <br /> Project Manager <br /> 1 5090285.EMC <5> <br />