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Sequoia `
<br /> 680 Chesapeake Drive Redwood City,CA �..,,3 (413) 964.9600 FAX(413) 964.9233
<br /> 404 N.Wlset Lane Walnut Creek,CA 94598 (310) 988.9600 FAX(510)988.9673
<br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921.9600 FAX(916)921.0100
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<br /> :i beoat rateg e�s Inc. ��ent fro ec � ; osco 1�P
<br /> 3164 Gold Camp Dr., Suite 240 Matrix: Soil
<br /> Rancho Cordova, CA 95670
<br /> Attention: Greg Gurss OC Sample Group 705-0337 Reported: May 21, 1997
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<br /> QUALITY CONTROL DATA REPORT
<br /> ANALYTE 1,4-Diohloro- N-Nitroso-Dl- 1,2,4-Trichloro- 4-Chloro-3-
<br /> Phenol 2-Chlorophenol benzene N-propylamine benzene Meth I han I
<br /> Method: EPA 8270 EPA 8270 EPA 8270 EPA 8270 EPA 8270 EPA 8270
<br /> Analyst: I.Dalvand 1.Dalvand I.Dalvand I.Dalvand I. Dalvand I.Dalvand
<br /> Concentration
<br /> Spiked: 5000 ug/kg 5000 ug/kg 2500 ug/kg 2500 ug/kg 2500 ug/kg 5000 ug/kg
<br /> LCS Batch#: LCS051997 LCS051997 LCS051997 LC8051997 LCS051997 LCS051997
<br /> Date Prepared: 05/19/97 05/19/97 05/19/97 05/19/97 05/19/97 05/19/97
<br /> Date Analyzed: 05/19/97 05/19/97 05/19/97 05/19/97 05/19/97 05/19/97
<br /> Instrument I.D.#: GC/MS-1 GC/MS-1 GC/MS-1 GC/MS-1 GC/MS-1 GC/MS-1
<br /> LCS %
<br /> Recovery: 104 96 92 92 92 94
<br /> Control Limits: 26-90 25-102 28.104 41-126 38-107 26-103
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<br /> MS/MSD
<br /> Batch#: 7050421 7050421 7050421 7050421 7050421 7050421
<br /> Date Prepared: 05/19/97 05/19/97 05/19/97 05/19/97 05/19/97 05/19/97
<br /> Date Analyzed: 05/19/97 05/19/97 05/19/97 05/19/97 05/19/97 05/19/97
<br /> Instrument I.D.#: GC/MS-1 GC/MS-1 GC/MS-1 GC/MS-1 GC/MS-1 GC/MS-1
<br /> Matrix Spike
<br /> %Recovery: as 94 68 72 88 88
<br /> Matrix Spike
<br /> Duplicate%
<br /> Recovery: 90 100 92 76 92 96
<br /> Relative%
<br /> Difference: 2.3 6.2 4.4 5.4 4.4 8.7
<br /> Please Note:
<br /> SEQUOIA ANALYTICAL 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 /> sl �EVOOAc M, pip validation of sample batch results. Due to matrix effects,the OC limits for MS/MSD's are advisory only
<br /> Edana M. Fruclano and are not used to accept or reject batch results.
<br /> Project Manager/Sacramento Laboratory Page 1 of 2
<br /> 7050337.GSI <10>
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