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L Sequoia 680 Chesapeake Drive Redwood City,CA 940tw) (415) 364-9600 FAX(415) 364-9233 <br /> 404 N.Wiget Lane Walnut Creek,CA 94598 (510) 988-9600 FAX(510)988-9673 <br /> Analytical 1119 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921-0100 <br /> ........... <br /> ........................ <br /> . .. . .............................. ... ................. . <br /> Kleinfeld"erClient Project Ib. 20-3937-Oi <br /> ... ................................ <br /> 2825 East Myrtle St. Matrix: Water <br /> Stockton, CA 95205 <br /> ;!:'Attentjon: Tony Martin QC Sample Group 6071442-44 Reported: Aug 14, 199&:.': <br /> ................ .................................. <br /> ........... <br /> ................................ <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 /> LConcentration <br /> Spiked: 50 ug/L 50 ug/L 50 ug/L 50 ug/L 50 ug/L <br /> LCS Batch#: LCS081296 LCS081296 LCS081296 LCS081296 LCS081296 <br /> .Date Prepared: 08/12/96 08/12/96 08/12/96 08/12/96 08/12/96 <br /> Date Analyzed: 08/12/96 08/12/96 08/12/96 08/12/96 08/12/96 <br /> Instrument I.D.#: MS-F1 MS-F1' MS-F1 MS-F1 MS-Fl <br /> LCS % <br /> Recovery, 113 112 146 115 118 <br /> L Control Limits: 65-135 70-130 70-130 70-130 70-130 <br /> . ...... .... .....- <br /> ...... .. ...... <br /> -F <br /> N, <br /> x <br /> MS/MSD <br /> Batch #: 6071442 6071442 6071442 6071442 6071442 <br /> L <br /> .Date Prepared: 08/12/96 08/12/96 08/12/96 08/12/96 08/12/96 <br /> Dale Analyzed: 118/12/96 08/12/96 08/12/96 08/12/96 08/12/96 <br /> LInstrument I.D.#: MS-F1 MS-F1 MS-F1 MS-F1 M8-F1 <br /> Matrix Spike <br /> % Recovery: 114 116 116 112 116 <br /> L Matrix Spike <br /> L Duplicate% <br /> Recovery: 118 119 122 120 121 <br /> Relative % <br /> LDifference: 3.3 3.3 5.2 6.7 3.5 <br /> Please Note: <br /> The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> L 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 /> Schneider <br /> I I/, L IKM�d LiGGnda L <br /> Project Manager/Sacramento Laboratory <br /> 6071442.KLF <14> <br /> L �a <br />