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L Sequoia U680 Chesapeake [give 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) 921-9600 FAX (916)921.0100 <br /> Leinf6ide"F"' - Client.Pr.oj.ect lid. 20-3937-01 <br /> 2825 East Myrtle St. Matrix: Soil <br /> <: <br /> Stockton, CA 95205 <br /> Attention: Tony Martin OC Sample Group 6071228-29, 31, 34, 37-38 Reported: Aug 8, 19961- <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Eth'yl- <br /> Ll Benzene Toluene _ Berizene Xylenes . Diesel Sulfate <br /> Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA 8015M EPA 375.4 <br /> Analyst: C.Lee 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 7.5 mg/kg 1000 mg/kg <br /> LCS Batch#: LCS072996 LCS072996 LCS072996 LCS072996 1 LCS080196 LCS080296 <br /> Date Prepared: 07/29/96 07/29/96 07/29/96 07/29/96 08/01/96 08/02/96 <br /> Date Analyzed: 07/29/96 07/29/96 07/29/96 07/29/96 08/01/96 08/02/96 <br /> Instrument I.D.#: GCHP-1 GCHP-1 GCHP-1 GCHP-1 GCHP-3B T-1 <br /> LCS % <br /> Recovery: 88 90 92 93 95 103 <br /> Control Limits: 75-125 75-125 75-125 75-125 60-130 80-120 <br /> MS/MSD <br /> Batch #: 6071196 6071196 6071196 6071196 6071240 6071234 <br /> Date Prepared: 07/29/96 07/29/96 07/29/96 07/29/96 08/01/95 08/02/96 <br /> Date Analyzed: 07/29/96 07/29/96 07/29/96 07/29/96 08/02/96 08/02/96 <br /> Instrument I.D.#: GCHP-1 GCHP-1 GCHP-1 GCHP-1 GCHP-3B T-1 <br /> Matrix Spike <br /> L % Recovery: 78 82 81 84 100 96 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 70 73 76 75 107 99 <br /> Relative% <br /> L Difference: 11 12 6.4 it 6.8 3.1 <br /> LYSEQ01A ANALYTICAL Please Note: <br /> The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> 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 /> C. Schneider and are not used to accept or reject batch results. <br /> Project Manager/Sacramento Labora ory <br /> 6071228.KLF <22> <br />