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Sequoia 680 Chea
<br /> Pwke Drive Redwood Qty,CA (415) 9 .9600 FAX(410464.4233
<br /> 404 H.WiSet Lane Walnut Creek,CA 945984598 (SIO) 98888.4600 FAX(910))988.9679
<br /> a- ) 819 Striker Avenue,Sul 8 Sacramento,CA 95854 (916) 921 9600 FAX(916)921•oiw
<br /> Analytical
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<br /> 3164 Gold Camp Dr., Suite 240 Matrix. Soil
<br /> Rancho Cordova, CA 95670
<br /> Attentlon: Greg Gurss OC Sample Group 7050335-0336 Reported: May 21, 1997n
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<br /> QUALITY CONTROL DATA REPORT
<br /> ANALYTE 1,1-Dichloro- Trichloro- Chloro-
<br /> ethane ethene benzene
<br /> Method: EPA 8010 EPA 8010 EPA 8010
<br /> Analyst: K.Pocan K.Pocan K.Pocan
<br /> Concentration
<br /> Spiked: 200 mg/kg 200 mg/kg 200 mg/kg
<br /> LCS Batch#: LCS051997 LCS051997 LCS051997
<br /> Date Prepared: 05/19/97 05/19/97 05/19/97
<br /> Date Analyzed: 05/19/97 05/19/97 05/19/97
<br /> Instrument I.D.#: GC-6 GC-6 GC-6
<br /> LCS %
<br /> Recovery: 123 109 106
<br /> Control Limits: 65-135 70-130 70-130
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<br /> MS/MSD
<br /> Batch #: 7050335 7050335 7050335
<br /> Date Prepared: 05/19/97 05/19/97 05/19/97
<br /> Date Analyzed: 05/19/97 05/19/97 05/19/97
<br /> Instrument l.D.#: GC-6 GC-6 GC-6
<br /> Matrix Spike
<br /> % Recovery: 100 47 104
<br /> Matrix Spike
<br /> Duplicate
<br /> Recovery: 83 56 122
<br /> Relative%
<br /> Difference: 19 16 15
<br /> Please Note:
<br /> The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents,
<br /> SEQUOIA ANALYTICAL 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
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<br /> and are not used to accept or reject batch results.
<br /> .
<br /> Edana M. Fruciano
<br /> Project Manager/Sacramento Laboratory
<br /> 7050335.GSI <16>
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