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Sequoia 4- 1 ' <br /> 660 Chesapeake Drive Redwood City,CA 9406(415} 36 9600 FAX(45) 3 64- 29 33 <br /> 404 N.Wiget Lane Walnut Creek,CA 94598 (510) 988.9600 FAX(510)988.9673 <br /> X117 Analytical 814 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921.9600 FAX(916)921-0 100 <br /> Klelnfelder Client Project ID: 20-393. 04 <br /> 2825 East Myrtle St. Matrix Soil <br /> Stockton, CA 95205 <br /> Attention: Tony Martin QC Sample Group 6071239-40, 43, 46, 49-50 Reported: Aug 8, 1996.".. <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE: 1,1-Dichloro- Chloro- <br /> ethene Trichloroethene Benzene Toluene benzene <br /> L <br /> Method: EPA 8260 EPA 8260 EPA 8260 EPA 8260 EPA 8260 <br /> Analyst: W.Amundsen W.Amundsen W.Amundsen W.Amundsen W.Amundsen <br /> Concentration <br /> Spiked: 2500 ug/kg 2500 ug/kg 2500 ug/kg 2500 ug/kg 2500 ug/kg <br /> S LCS Batch#: LCS080696 LCS080696 LCS080696 LCSG80696 LCS080696 <br /> Date Prepared: 08/06/96 08/06/96 08/06/96 08/06/96 08/06/96 <br /> Date Analyzed: 08/06/96 08/06/96 08/06/96 08/06/96 08/06/96 <br /> Instrument I.D.#: MS-F1 MS-F1 MS-F1 MS-F1 MS-F1 <br /> LCS % <br /> Recovery: 131 110 117 109 108 <br /> Control Limits: 65-135 70-130 70-130 70-130 70-130 <br /> i ...........................................::.:.:�:.�,.:..:::.. .. .: .......,........ <br /> MS/MSD <br /> Batch #: 6071226 6071226 6071226 6071226 6071226 <br /> Date Prepared: 08/05/96 08/05/96 08/05/96 08/05/96 08/05/96 <br /> Date Analyzed: 08/05/96 08/05/96 08/05/96 08/05/96 08/05/96 <br /> Instrument I.D.#: MS-F1 MS-F1 MS-F1 MS-F1 MS-F1 <br /> Matrix Spike <br /> L <br /> % Recovery: 193 114 127 117 116 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 22 120 133 126 117 <br /> Relative% <br /> Difference: 14 5.0 4.3 7.3 1.1 <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 OC limits for MS/MSD's are advisory only <br /> and are not used to accept or re <br /> 'ect batch.results. <br /> Linda C. Schneider <br /> Project Manager/Sacramento Laboratory <br /> * 6071239.KLF <24> <br />