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L Sequoia 680 Chesapeake Drive Redwood City,CA 9400 (415) 364-9600 FAX(415) 364-9233 <br /> 1 404 N.Wiget Lane Walnut Creek,CA 94598 (510) 988.9600 FAX(510)988-9673 <br /> fr�ll7 Analytical 819 StrikerAvenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX (916)921-0100 <br /> L <br /> Kleirife4der �Ilent project ID: 20-3937-01 <br /> 2825 East Myrtle St. Matrix: Water <br /> Stockton, CA 95205 <br /> Attention: Tony Martin OC Sample Group 6071442-44 Reported: Aug 14, 1996:['. <br /> QUALITY CONTROL DATA REPORT <br /> L <br /> ANALYTE Ethyl- <br /> Benzene Toluene Benzene Xylenes Diesel Sulfate <br /> Ll <br /> Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 LUFT EPA 375.4 <br /> Analyst: V.Owens V.Owens V.Owens V.Owens C.Lee S.Phillips <br /> Concentration <br /> Spiked: 10 ug/L 10 ug/L 10 ug/L 30 ug/L 300 ug/L 20 mg/L <br /> k LCS Batch#: LCS080896 LCS080896 LCS080896 LCS080896 LCS080796 LCS080696 <br /> ,Date Prepared: 08/08/96 08/08/96 08/08/96 08/08/96 08/07/96 08/06/96 <br /> Date Analyzed: 08/08/96 08/08/96 08/08/96 08/08/96 08/08/96 08/06/96 <br /> t 6 <br /> Instrument I.D.#: GCHP-7 GCHP-7 GCHP-7 GCHP-7 GCHP-3A T-1 <br /> LCS % <br /> Recovery: 97 100 99 101 87 103 <br /> Control Limits: 70-130 70-130.......................70:130........,.,:.::70.,:3060-130.:,:::.>:.::.::.;: 80-120: <br /> MS/MSD <br /> Batch#: 6071442 6071442 6071442 6071442 BS080796 6071461 <br /> Date Prepared: 08/08/96 08/08/96 08/08/96 08/08/96 08/07/96 08/06/96 <br /> Date Analyzed: 08/08/96 08/08/96 08/08/96 08/08/96 08/08/96 08/06/96 <br /> Instrument I.D.#: GCHP-7 GCHP-7 GCHP-7 GCHP-7 GCHP-3A T-1 <br /> Matrix Spike <br /> L % Recovery: 98 100 100 101 87 108 <br /> Matrix Spike <br /> LDuplicate% <br /> Recovery: 100 103 102 102 85 106 <br /> Relative% <br /> 1 Difference: 2.0 3.0 2.0 1.0 2.3 1.9 <br /> LSEQUOIA ANALYTICAL Please Mote: <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 OC limits for MS/MSD's are advisory only <br /> Oa C. Schneider and are not used to accept or reject batch results. <br /> ect Manager/Sacramento Laboratory <br /> 6071442.KLF <13> <br /> 9 <br />