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1 <br /> l Sequoia Q680 Chesapeake Drive Redwood City,CA 9406(415) 364-9604 FAX(415) 364-9233 <br /> 404 N.Wiget Lane Walnut Creek,CA 94598 (510) 988-9600 FAX(510)988-9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921.0100 <br /> - :M <br /> ' Kleinfelder Client Project Ifo:' '2''0-3937-Oi <br /> 2825 East Myrtle St. Matrix: Soil <br /> Stockton, CA 95205 <br /> Attention: Tony Martin OC Sample Group 6071239-40, 43, 46, 49-50 Reported: Aug 8, 1996:;: <br /> ::::............... .... ...................................................:.:.:.:..:...,:::. :r. ... <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE: 1,1-Dichloro- 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.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 /> LLCS Batch#: LCS080796 LCS080796 LCS080796 LCS080796 LCS080796 <br /> Date Prepared: 08/07/96 08/07/96 08/07/96 08/07/96 08/07/96 <br /> • Date Analyzed: 08/07/96 08/07/96 68/07/96 08/07/96 08/07/96 <br /> . Instrument I.D.#: MS-F1 MS-F1 MS-F1 MS-F1 MS-F1 <br /> LCS <br /> LRecovery: 106 113 115 118 121 <br /> Control Limits: 65-135 70-130 70-130 70-130 70-130 <br /> �.: <br /> < <br /> .: v......... ... <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 /> % 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 QC limits for MS/MSD's are advisory only <br /> and are not used to accept or reject batch results. <br /> Linda C. Schneider <br /> Project Manager/Sacramento Laboratory <br /> 6071239.KLF <25> <br />