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0 <br /> (D— Sequoia 680 Chesapeake Drive Redwood City,CA 94063.650) 364-9600 FAX(650)364-9233 <br /> 404 N.Wiget Lane Walnut CreekCA 94598 510 988-819 Striker Avenue,Suite 8 Sacramento,CA 95834 ( ) 9600 FAX(516)988-9673 <br /> Analytical (916) 921-9600 FAX(916)921-0100 <br /> Kleirifelder..: <br /> ..... <br /> Client Project ID. 20 4054-01 <br /> 2825 East Myrtle St. Matrix: Soil/Water <br /> Stockton, CA 95205 <br /> Attention: Tony Y <br /> Martin <br /> QC Sample le <br /> Gro - <br /> p u 8020578 0580 Re <br /> .ported:a Mar 12, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE: 1,1-Dichloro- Chloro- <br /> ethene Trichloroethene Benzene Toluene benzene Diesel <br /> Method: EPA 8260 EPA 8260 EPA 8260 EPA 8260 EPA 8260 DHS LUFT <br /> Analyst: K. Pocan K. Pocan K. Pocan K. Pocan K.Pocan C.Lee <br /> Concentration <br /> Spiked: 50Ng/L 50Ng/L 50Ng/L 50Ng/L 50Ng/L 500Ng/L <br /> LCS Batch#: LCS022798 LCS022798 LCS022798 LCS022798 LCS022798 LCS022798 <br /> Date Prepared: 02/27/98 02/27/98 02/27/98 02/27/98 02/27/98 02/27/98 <br /> Date Analyzed: 02/27/98 02/27/98 02/27/98 02/27/98 02/27/98 02/27/98 <br /> Instrument I.D.#: MS-F1 MS-F1 MS-F1 MS-F1 MS-F1 GCHP-3B <br /> LCS % <br /> Recovery: 79 94 92 83 89 82 <br /> Control Limits: 65-135% 70-130% 70-130% 70-130% 70-130% 60-140% <br /> MS/MSD <br /> Batch #: 8020578 8020578 8020578 8020578 8020578 BS022798 <br /> Date Prepared: 02/27/98 02/27/98 02/27/98 02/27/98 02/27/98 02/27/98 <br /> Date Analyzed: 02/27/98 02/27/98 02/27/98 02/27/98 02/27/98 02/27/98 <br /> Instrument I.D.#: MS-F1 MS-F1 MS-171 MS-F1 MS-F1 GCHP-3B <br /> Matrix Spike <br /> % Recovery: 117 104 104 82 101 82 <br /> Matrix Spike <br /> 1 Duplicate % <br /> Recovery: 95 98 98 86 90 86 <br /> Relative % <br /> Difference: 21 5.9 5.9 4.8 12 4.8 <br /> Please Note: <br /> The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> SEQU IA ANALYTIC L 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 /> � /�� ✓ hjy�j,{/J/� and are not used to accept or re'ect batch results. <br /> inda//C. Schneider <br /> Project Manager/Sacramento Laboratory <br /> 8020578.KLF <18> <br />