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Y <br /> Sequoia 680 Chesapeake DFive Redwood City,CA 940 (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 819 Striker Avenue,Suite 8 Sacramento, CA 95834 (916) 9219600 FAX(916)921-0100 <br /> ..... <br /> Kleinfelder Client Project ID. 20 3937-01 <br /> 2825 ,cast Myrtle St. :Matrix: Soil , <br /> Stockton, CA 95205 <br /> '<Attention: Tony Martin OC Sample Group 6011239-40, 43, 46, 49-50 Reported: Aug 8, 1996.... <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl- <br /> Benzene Toluene Benzene Xylenes Sulfate <br /> Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA 375.4 <br /> Analyst: C. Lee C. Lee C:.Lee C.Lee S. Phillips <br /> Concentration <br /> Spiked: 0.20 mg/kg 0.20 mg/kg 0.20 mg/kg 0.60 mg/kg 1000 mg/kg <br /> 1 t, <br /> LCS Batch#: LCS073196 LCS073196 LCS073196 LCS073196 LC5072996 <br /> Date Prepared: 07/31/96 07/31/96 07/31/96 '07/31/96 07/29/96 <br /> Date Analyzed: 07/31/96 07/31/96 07/31/96 07/31/96 08/02/96 <br /> Instrument I.D.#: GCHP-1 GCHP-1 GCHP-1 GCHP-1 `T-1 <br /> LCS <br /> Recovery: 101 104 105 105 103 <br /> Control Limits: 75-125 75-125- .75-125 75-125 80-120 <br /> ' MS/MSD <br /> Batch #: 6071250 6071250 6071250 6071250 6071234 <br /> } <br /> Date Prepared: 07/31/96 07/31/96 07/31/96 07/31/96 07/29/96 <br /> LDate Analyzed: 07/31/96 07/31/96 07/31/96 07/31/96 08/02/96 <br /> Instrument LD.#: GCHP-1 GCHP-1 GCHP-1 GCHP-1 T-1 <br /> + Matrix Spike <br /> % Recovery: 86 88. 89 86 96 <br /> Matrix Spike <br /> Duplicate <br /> Recovery: .77 78. 81 75 99 <br /> i Relative% <br /> Difference: 11 12 9.4 14 3.1 <br /> SEQUOIA ANALYTICAL 'Please Note: •, <br /> The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> VLi�nda <br /> � preparation and analytical methods employed for the samples. The LCS-,%recovery data is used forvalidation of sample batch results. Due to matrix effects,the OC limits for MS/MSD's are advisory only <br /> C. hneider and are not used to acceptor reject batch results. *Matrix interference. <br /> ect Manager/Sacramento Laboratory <br /> 6071239.KLF <23> <br />