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Sequoia 819 arra Avenue Suite 8 <br /> Sacramento,CA 95834 <br /> ,! {916}921-9600 <br /> FAX(916)921-0100 <br /> 4D- <br /> Saaam0 <br /> IwoAnalytical www sequolalabs corn <br /> Stratus Environmental Project ARCO 2168,Stockton,CA - Sampled 8130100 <br /> 3330 Cameron Park Drive, Ste 550 Project Number NIA Received 911100 <br /> Cameron Park,CA 95682 Project Manager Jay Johnson Reported 9/21, 27100 z L <br /> s�„-.*��.--'-y,, -.e q a +,sMu -m.e <br /> ValatrIeNOzy�enate Compounds by EPA Metlio`d 8260AIQualrty'Control°1v <br /> ewrX ° t E�i� y e; "� ,_--r";--�,� a�- y�.�v-'°'"s-�. _. ..v..°, = t- '��"'" ,. �" .a �^,� e k7.ra"� �,,, <br /> ��{ �r k 1 3� H v 5 'z6a. <br /> t n - ��4��.���,,S eyuoia;Analytical,Saerarriento _ air a <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limas % Limit % Notes* <br /> Batch 0090117 Date Prepared 91131.00 Extraction Method EPA 5030E IP!I <br /> Blank 0090117-BLKI <br /> Tert-butyl alcohol 9/13/00 ND ug/l 200 <br /> Methyl tert-butyl ether ND 200 <br /> Di-isopropyl ether ND 200 <br /> Ethyl tert-butyl ether ND 200 <br /> Tert-amyl methyl ether ND 200 <br /> Ethanol ND 3000 <br /> 1,2-Dichloroethane ND 200 <br /> Ethylene dibromide ND 200 <br /> Surrogate 1 2-DCA-d4 500 530 rF 600-140 106 <br /> LCS 0090117-BSI <br /> Methyl tert-butyl ether 9113100 500 484 ug/1 700-130 968 <br /> Surrogate 1,2-DCA-d4 or500 522 It <br /> 600-140 104 <br /> x Spike 0090117-MSI 5009081-01 <br /> ethyl tert-butyl ether 9113100 500 ND 520 ug/l 600-140 104 <br /> Surrogate 12-DCA-a4 " 500 528 600-140 106 <br /> Matrix Spike Dup 0090117-MSD1 5009081-01 <br /> Methyl tert-butyl ether 9113100 500 ND 540 ug/l 600-140 108 250 377 <br /> Surrogate 1,2-DCA-d4 500 544 600-140 109 <br /> is Analytical-Sacramento *Refer to end of report for text of notes and definitions <br /> Page 19 of 22 <br />