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Sequoia 819 Striker Avenue,Suite 8 <br /> Sacramento CA 95834 <br /> (916)921-9600 <br /> Analytical FAX qu alabsc00 <br /> www sEquollabs com <br /> IT Corporation-Sacramento Project Parkinson's Hammer 15 Arco Sampled 916100 <br /> 1433 N Market Blvd,Ste 1 Project Number NIA Received 917/00 <br /> Sacramento,CA 95834 Project Manager Kathleen Waldo Reported 9/21/00 <br /> MTBE by EPA Method 8260A/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br />�Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch 0090198 Date Prepared 9/20100 Extraction Method EPA 5.0.3.0_B IMeOHI <br /> Blank 0090198-BLKI <br /> Methyl tert-butyl ether 9/20/00 ND mg/kg 0 100 <br /> Surrogate 1,2-DCA-d4 of 250 198 or <br /> 600-140 792 <br /> LCS 0090198-BS1 <br /> Methyl tert-butyl ether 9120/00 250 245 mg/kg 700-130 980 <br /> Surrogate 1,2-DCA-d4 r, 250 203 if 600-140 812 <br /> Matrix Spike 0090198-MS1 5009066-02 <br /> Methyl tert-butyl ether 9/20/00 250 654 8 15 mg/kg 600-140 644 <br /> Surrogate 1,2-DCA-d4 10 250 1 77 to 600-140 708 <br /> Matrix Spike Dup 0090198-MSD1 S009066-02 <br /> Methyl tert-butyl ether 9/20/00 250 654 883 mg/kg 600-140 916 250 349 2 <br /> gate 12-DCA-d4 250 184 600-140 736 <br /> in <br /> ota Analytical-Sacramento *Refer to end of report for text of notes and definitions <br /> Page 6 of 7 <br />