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Sequoia 0680 Chesapeake Drive Redwood City,CA 940630(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 119 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921-0100 <br /> ............ ......... . .......... <br /> 20-3978-01.W35 I.W35 Spreckels <br /> 2825 East Myrtle St. Matrix: Soil/Water <br /> Stockton, CA 95205 <br /> Attention: Tony Martin QC Sample Group 7090549-0559 Reported: Sep 18, 19972.*, <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl- <br /> Benzene Toluene Benzene Xyienes Diesel Diesel <br /> Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 DHS LLIFT DHS LUFT <br /> Analyst: C.Lee C.Lee C.Lee C.Lee C.lee C.Lee <br /> Concentration <br /> Spiked: 0.20 mg/kg 0.20 mg/kg 0.20 mg/kg 0.60 mg/kg 12.5 mg/kg 500 mg/L <br /> LCS Batch#: LCS091197 LCS091197 LCS091197 LCS091197 LCS091297 LCS091197 <br /> Date Prepared: 09/11/97 09/11/97 09/11/97 09/11/97 09/12/97 09/11/97 <br /> Date Analyzed: 09/11/97 09/11/97 09/11/97 09/11/97 09/14/97 09/12/97 <br /> Instrument I.D.#: GCHP-1 GCHP-1 GCHP-1 GCHP-1 GCHP-3B GCHP-38 <br /> LCS % <br /> Recovery: 115 108 107 106 78 69 <br /> Control Limits: 70-130 70-130 70-130 70-130 60-140 60-140 <br /> yb <br /> 1.." <br /> ..............�.' <br /> MS/MSD <br /> Batch #: 7090245 7090245 7090245 7090245 7090546 BS091197 <br /> Date Prepared: 09/11/97 09/11/97 09/11/97 09/11/97 09/12/97 09/11/97 <br /> Date Analyzed: 09/11/97 09/11/97 09/11/97 09/11/97 09/14/97 09/12/97 <br /> Instrument I.D-#: GCHP-1 GCHP-1 6CHP-1 GCHP-1 GCHP3B GCHP3B <br /> Matrix Spike <br /> %Recovery: 114 107 106 I06 81 69 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 112 106 106 105 83 79 <br /> Relative% <br /> Difference: 1.8 0.94 0.0 0.95 2.4 14 <br /> SE0901A ANA[iYTICAL 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 OC limits for MS/MSD's are advisory only <br /> ^nd aC ecl� and are not used to accept or reject batch results. <br /> c <br /> Pro Manager/Sacramento <br /> Project an orarory <br /> 7090550.KLF <17> <br />