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� 819 Straker Avenue Suite 8 <br /> Sequoia Sacramento C95834 <br /> (9 E 6)922 1 9600 <br /> FAX(916)921 0100 <br /> Analytical www sequaala6s corn <br /> SECOR International-Rancho Cordova Project Arco 4932,Stockton,CA Sampled 8/21/00 to 8/22/00 <br /> 3017 Kilgore Road,Suite 100 Project Number N/A Received 8124/00 <br /> Rancho Cordova,CA 95670 Project Manager Rusty Berikosky Reported 9111/00 <br /> Volatile Oxygenate Compounds by EPA Method 8260A/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> �A�,ale Analyzed Level Result Reqult Units Recov Limits % Limit % Notes* <br /> 'Batch 0080314 Date Prepared 8128100 Extraction Method EPA 5030B IMeOHI <br /> Blank 0080314-BLKI <br /> Tcrt-butyl alcohol 8/28/00 ND mg/kg too <br /> U <br /> ethyl tert-butyl ether ND 0 100 <br /> -isopropyl ether ND 0 100 <br /> Ethyl tert-butyl ether ND 0 100 <br /> Tert-amyl methyl ether ND 0 100 <br /> 'Ethanol ND 150 <br /> 1,2-Dichloroethane ND 0 100 <br /> Ethylene dibromide _ ND 0 100 <br /> ,Surrogate 1,2-DCA-d4 250 258 600-140 103 <br /> LCS 0080314-BSI <br /> MI tert-butyl ether 8128/00 2 50 2 10 mg/kg 700-130 840 <br /> 12-DCA-d4 250 251 600-140 100 <br /> Matrix Spike 0080314-MSI S008176-01 <br /> Methyl tert-butyl ether 8128100 250 762 684 mg/kg 600-140 -312 3,13 <br /> Surrogate 12-DCA-d4 11250 206 600-140 824 _ D <br /> Matrix Spike Duo 0080314-MSD1 S008176-01 <br /> ,Methyl tert-butyl ether 8128100 250 762 81 5 mg/kg 600-140 212 250 -1050 3,D <br /> Surrogate 12-DCA-d4 11250 211 11 600-140 844 D <br /> Batch 0080379 Date Prepared 9/1100 Extraction Method EPA 5030B {MeOHI <br /> 'Blank 0080379-BLKI <br /> Tert-butyl alcohol 911/00 ND mg/kg 100 <br /> Methyl tert-butyl ether ND 0 100 <br /> Di-isopropyl ether ND 0 100 <br /> Ethyl tert-butyl ether ND 0 100 <br /> Tert-amyl methyl ether ND 0 100 <br /> ND 150 <br /> ,Ethanol <br /> 1,2-Dichloroethane " ND 0 100 <br /> Ethylene dibromide ND 0 100 <br /> Surrogate 1,2-DCA-d4 250 236 600-140 944 <br /> SCS 0080379-BSI <br /> Methyl tert-butyl ether 911/00 250 2 11 mg/kg 700-130 844 <br /> Surrogate 1,2-DCA-d4 " 2 50 2 43 600-140 972 <br /> ,Matrix Spike 0080379-MS1 S008344-08 <br /> 1 tert-butyl ether 9/l/00 2 50 0 222 2 23 mg/kg 600-140 803 <br /> I* <br /> Sequoia Analytical-Sacramento "Refer to end of report for text of notes and definitions <br /> Page 18 of 20 <br />