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Sequoia 680 Chesapeake Drive Redwood City,CA 94kom) (415) 364-9600 FAX(415) 364-9233 <br /> 404 N.Wiget Lane Walnut Creek,CA 94598 (510) 488.9600 FAX(510)988-9673 <br /> Analytical 119 Strike,Avenue,Suite 8 Sacramento, CA 95834 (916) 921.9600 FAX(916)921-0100 <br /> K einfeldier­­ -Clientroject 1[)':""20-3937-01 <br /> L2825 East Myrtle St. Matrix: Soil <br /> Stockton, CA 95205 <br /> -29, 31, 34, 37-38 <br /> Reported: Aug 8, 1996- <br /> ,., <br /> Attention: Tony Martin QC Sample Group 6071�28 ... <br /> ----------- <br /> ...... ... ... <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE: 1,1-Dichlofo- Chloro- <br /> ethene Trichloroethene Benzene Toluene benzene <br /> Method: EPA 8260 EPA 8260 EPA 8260 EPA 8260 EPA 8260 <br /> Analyst: W.Amundsen W.Amundsen W..Arnundsen W.Amundsen W.Amundsen <br /> L Concentration <br /> Spiked: 2500 ug/kg 2500 uq%kg 2500 ug/kg 2500 ug/kg 2500 ug/kg <br /> LCS Batch#: LCS080696 LCS080696 LCS080696. LCS080696 LCS080696 <br /> L i <br /> 'Date Prepared: 08/06/96 08/06196 08/06/96 08/06/96 08/06/96 <br /> LDate Analyzed: 08/06/96 08/06j96 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 9/6 <br /> LRecovery: 131 110 117 109 108 <br /> Control Limits: 59-172 62-137 66-142 59-139 60-133 <br /> ... ...... <br /> 2 <br /> ms/msD <br /> Batch#: 6071226 6071226 6071226 6071226 6071226 <br /> Date Prepared: 08/06/96 08/06/96 08/:06/96 08/06/96 4 08/06/96 <br /> LDate <br /> 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 /> Matrix Spike <br /> L % Recovery: 193 114 127, 117 116 <br /> Matrix Spike - <br /> Duplicate% <br /> LRecovery: 222 120 133 126 117 <br /> Relative% <br /> LDifference: 14 5.0 43 .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 QC limits for MS/MSD's are advisory only <br /> and are not used to accept or reject batch results. <br /> L Linda C. Schneider <br /> Project Manager/Sacramento Laboratory 6071228.KLF <24> <br /> L <br />