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Sequoia <br />Analytical <br />Gettter-Ryan - Dublin <br />6747 Sierra Court, Ste 1 <br />Dublin CA 94568 <br />Project Chevron 9-5775, Lodi, CA <br />Project Number 101207 01 <br />�rniect Manaeer S Polston <br />819 Striker Avenue Suite 8 <br />Sacramento CA 95834 <br />(916) 921-9600 <br />FAX (916) 921-0100 <br />www sequoialabift <br />Sampled 7126100 <br />Received 7126100 <br />Renorted 811-2 4/00 <br />Volatile Oxygenate Compounds by EPA Method 8260A/Quality Control <br />Sequoia Analytical - Sacramento <br />LCS 0070259-BS1 <br />7127100 too 102 mg/m3 Air 70 0-130 102 <br />....,.._.. - - <br />Surrogate 12 -DCA -d4 <br />Date Spike Sample <br />QC <br />Reporting Limit Recov RPD RPD <br />6170-140 <br />Analyzed Level Result <br />Result <br />Units Recov Limits % Limit % Notes* <br />Analyte <br />104 <br />mg/m' Air <br />700-130 <br />Batch 0070259 <br />Date Prepared 7/27100 <br />7127100 <br />Extraction Method EPA 5030B IP/TI <br />Blank <br />0070259-BLKI <br />ND <br />mglm' Air 50 0 <br />Tert-butyl alcohol <br />7127100 <br />ND <br />0 500 <br />Methyl tert-butyl ether <br />ND <br />0 500 <br />Di -isopropyl ether <br />7128100 <br />ND <br />0 500 <br />Ethyl tert-butyl ether <br />0070284-BLKI <br />ND <br />0 500 <br />Tert-amyl methyl ether <br />ND <br />3000 <br />Ethanol <br />100 <br />9 60 <br />600-140 960 <br />Surrogate 1 2 -DCA -d4 <br />Methyl tert-butyl ether <br />" <br />LCS 0070259-BS1 <br />7127100 too 102 mg/m3 Air 70 0-130 102 <br />....,.._.. - - <br />Surrogate 12 -DCA -d4 <br />100 <br />10 2 <br />6170-140 <br />Jule <br />• <br />LQ Duo <br />0070259 -BSD 1 <br />100 <br />104 <br />mg/m' Air <br />700-130 <br />104 250 194 <br />Methyl cert -butyl ether <br />7127100 <br />10 4 <br />60x140 <br />104 <br />Surrogate 1 2 -DCA -d4 <br />10 0 <br />Batch. 0070284 <br />Date Pre ared <br />7128100 <br />Extraction Method EPA 5030E IPM <br />Blank <br />0070284-BLKI <br />ND <br />mg/m' Air <br />50.0 <br />Tert-butyl alcohol <br />7/27/00 <br />ND <br />0.500 <br />Methyl tert-butyl ether <br />" <br />" <br />0.500 <br />D*-tsopropyl ether <br />ND <br />0.500 <br />Ethyl tert-butyl ether <br />" <br />0.500 <br />Tert-amyl methyl ether <br />" <br />3000 <br />Edmol <br />100 <br />100 0 0 <br />60x140 <br />100 <br />Surrogate 1,1 -DCA -d4 <br />WS <br />007028"S>I <br />7127/00 <br />100 <br />984 <br />mg/m' Air <br />70x130 <br />98 4 <br />Methyl tert-butyl ether <br />" <br />100 <br />101 <br />" <br />60 x140 <br />101 <br />Surrogate 11 -DCA -d4 <br />LCS Duo <br />ether <br />Surrogate 1 <br />Batch. 0070286 <br />Blank <br />Tert-butyl alcohol <br />Methyl tert-butyl ether <br />Di -isopropyl ether <br />Ethyl tert-butyl ether <br />0070284-BSPI <br />7/27100 100 <br />" 100 <br />Date Prepared 7/28/00 <br />Q9702y_ 86-BLKI <br />7/28/00 <br />103 mg/m' Air 700-130 103 250 457 <br />101 buU-t4u rua <br />Extraction Method EPA 5030B PIT <br />ND ug/1 200 <br />ND 2.00 <br />ND 200 <br />ND 200 <br />Sequoia Analytical - Sacramento 'Refer to end of report for text of notes and definitions <br />Page I 1 of 13 <br />