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Sequoia :;: d110 Chewpeake Drive Redwood aty,CA (415) 864.4600 MX(415)564.9733 <br /> a— ) <br /> 404 N.Whet Line Walnut Creek,CA 94598 (310) 918.9600 FAX(510)988.9671 <br /> Analytical 8.19 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921.9600 PAX(916)921.0100 <br /> \\WN Ilk_. :::: �rnt roar ct 1 i L os o c \ti <br /> r �aeotrategles enc. le <br /> 3164 Gold Camp Dr., Suite 240 Matrix: Soil <br /> Rancho Cordova, CA 95670 <br /> Attention: Greg Gurss OC Sample Group 7050335-0336 Reported: May 21, 199Vf <br /> ♦.tix•::+Y.+'4ti.4,•S,l++ <br /> }:;. <br /> f'i�i}•:} ;.;.�{.;:.}:••?}.'^'.`: \\:l'l \::•:!:•,'?:itiv'% F� <br /> •:tax.?+u::-.r•:•+ra:,?n�n.r.+r.:+.^. �:• �. <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE 1,4-Dichloro- N-Nitroso-Di- 1,2,4-Trichloro- 4-Chloro-3- <br /> Phenol 2-Chlorophenol benzene N ro famine benzene Methylphanyl <br /> Method: EPA 8270 EPA 8270 EPA 8270 EPA 8270 EPA 8270 EPA 8270 <br /> Analyst: I.Dalvand I.Dalvand 1.Dalvand I. Dalvand 1.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 LCS051997 LC8051997 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.O.#: 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 /> a <br /> Control Limits: 26-90 25-102 28-104 41-126 38.107 26-103 <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: 88 94 88 72 88 88 <br /> Matrix Spike <br /> Duplicate % <br /> Recovery: 90 100 92 76 92 96 <br /> Relative% <br /> Difference: 2.2 6.2 4.4 5.4 4.4 8.7 <br /> Please(Vote: <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 /> E :zA M . 0&6A1,110 validation of sample batch results. Due to matrix effects,the QC limits for MS/MSDs are advisory only <br /> l s, and are not used to accept or reject batch results. <br /> Edana M. Fruciano <br /> Project Manager/Sacramento Laboratory Page 1 of 2 <br /> 7050335.GS1 <17> <br />