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Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> Sequoia 680 Chesapeake Drive 510) 988 9600 FAX(91 )988 9673 <br /> 404 N Wtget Lane Wainut Geek GA 8 34 (916) 921 9600 FAX(916)921 0140 <br /> g 19 Sinker Avenue Site 9 Sacramento CA 95839 ( <br /> �l� Analytical <br /> RuChstone Development Oiient Project ID Chevron #9-2033 <br /> Matrix Solid <br /> P O Box 2554 Reported Sep 12, 1996 <br /> Santa Rosa, CA 95405 QC Sample Group 6090437-444 <br /> Attention Jeff Monroe <br /> QUALITY CONTROL DATA REPORT <br /> Lead Nickel <br /> enc Copper Mercury <br /> Analyte Cadmium Chromium <br /> ME091196 MF091196 ME091196 ME091196 ME091296 <br /> hAE091196 7471 MDA <br /> QC Batch# ME091196 6010MDA 60i0MDA e010MDA 6014MDA fi0 A 6010 EPA 7471 <br /> 601 OMDA EPA 6010 EPA 6010 EPA 6010 EPA 6010 EPA 7471 <br /> EPA 6010 EPA 3054 <br /> Ansly Method EPA 6010 EPA 3050 FPA 3050 EPA 3050 EPA 3050 Kelly K Anderson <br /> Prep Method EPA 3050 J Kelly J Kelly J Kelly J 6090537 <br /> ria y5t J Kelly J Kelly <br /> 6090487 6090487 6090487 6090887 6090487 6090487 0 031 mg/k9 <br /> MS/MSD # 19 90487 3 6 mg/k9 36 mg/kg 31 mg/kg 15 mg/ 9 <br /> N D 9/11/96 9/11/96 9/12/96 <br /> Sample Conc 9/11/96 9/11/96 9/1i/ 9111/96 9/13/96 <br /> Prepared Date 9/11/96 9/11/96 9/11 j96 9/11 196 <br /> 9/11/96 MV-4 MV-4 MV-1 <br /> Analyzed Date 9/11/96MV 4 MV-4 MV-4 010 mg/kg <br /> instrument I D # MV 4 5o mg/kg 50 trig/kg 50 mg/kg 50 mg/kg 50 mg/k9 <br /> Conc Spiked 50 mg/kg 79 55 62 014 <br /> Result 83 <br /> 50 66 96 94 109 <br /> 94 103 94 <br /> MS % Recovery 100 6e o 14 <br /> 56 87 83 <br /> 52 69 104 102 109 <br /> DUp Result 100 105 102 <br /> D % ReCUV 109 6 3 0 0 <br /> 44 i 8 47 50 0-20 0-20 <br /> RPD 40 0-20 0-20 0-20 0-20 <br /> RPD Limit 0-20 <br /> LCS .#- LCS091196 LCS091196 <br /> LCS091196 LCS091196 LCS091196 LC-SO01196 LCS091296 <br /> / 98 9 i1f 9(12/96 <br /> 9/11/96 9/11/96 9/11/96 9(11/96 9/11/98 9/13/96 <br /> Prepared Date 9/11196 9f11 96 9/11/96 9/11/96 9/11/96/ MV 4 MV 4 MV-1 <br /> Analyzed Date 9/11/96 MV 4 MV-4 MV-4 50 mg/kg 50 mg/kg 0 10 mg/kg <br /> instrument i D # MV-4 50 mg/kg <br /> g <br /> 50 mg jkg 50 mg/kg <br /> Conc Spiked 50 mg/kg 53 58 52 012 <br /> 53 <br /> 54 52 106 104 120 <br /> LCS Result 104 116 106 <br /> LCS % Recov 108 <br /> 80-120 80-120 80-120 <br /> 80-120 80-120 <br /> 80 120 $0-120 <br /> LCS <br /> Control Limits <br /> Please Note g reagents, <br /> The LCS 1s a control sample of known, interferent-free s matrix that <br /> elMatriix spike s art aliquot Offsample <br /> S 4L101A ANALY7lCAL, #1 271 preparation,and analytical methods employed for the and subjer <br /> campIre,ted to the <br /> tortliled with known quantities of speciflo compounds ot tail within speclf ed control limits s due to matt x If <br /> r 1 recovery of analytes irom the matrix spike <br /> interference,the LCS recove 1s to be used to =Relte the batch <br /> **MS=Matrix pike MSD=MS Duplicate, PD=Relative p� Difference <br /> Melissa A Brewer 6090441 TOU <17:' <br /> Client Services Representative <br />