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Sequoia 680 Chesapeake Drive Redwood City.CA 94063 (650) 364-9600 FAX(650) 364-9233 <br /> 404 N.Wiget Lane Walnut Creek,CA 94598 (92 5)988-9600 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento.CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd. North.Ste.D Petaluma,CA 94954 (707) 792-1865 FAX(707) 792-0342 <br /> 3MCON -Sac Project: ARCO 2]8G, Stockton,CA Sampled: 9121198 <br /> 1433 N. Market Blvd. Project Number. 21775-237-002 Received: 9/21/98 <br /> Sacramento,CA 95834 Project Manager: Dave Foley Reported: 10I8 <br /> /98 <br /> Volatile Organic Compounds by EPA Method 8260A <br /> Sequoia Analytical - Sacramento <br /> Batch Date Date Surrogate Reporting <br /> analyte Number Prepared Analyzed Limits Limit Result Units Notes* <br /> 1LV-.L(Z) SA092-9 -01 Water <br />:rhanol 8100048 1015198 1015/98 30000 ND ug/I D <br />'ert-butyl alcohol 2000 ND D <br /> IIethyl Cert-butt'[ether 20.0 138 D <br /> li-isopropyl ether 20.0 ND D <br /> thyl tert-butyl ether 20.0 ND D <br /> ert-amyl methyl ether 20 0 ND D <br /> lrrogate: 1,2-DCR d4 60.0-140 111 <br /> LWA(64 1 S809241-04 Water <br /> thano[ 8100048 1015198 10/5/98 3000 ND ug/1 <br />!rt-butyl alcohol " " " 200 ND „ <br /> ethyl cert-butyl ether " 2.00 ND „ <br /> yl ether 2.00 ND <br /> by utyl ether 2.00 ND " <br />:rt-amyl methyl ether 2.00 ND " <br /> Irrogote: 1,2-DC.444 60.0-140 112 <br /> W-3 (60'1 S809241-05 <br /> W te <br /> hanof 8100048 1015198 10/5/98 3000 ND ug/l <br /> ert-butyl alcohol 200 310 " <br /> ethyl tert-butyl ether 2.00 23.5 " <br />-isopropyl ether 2.00 ND <br /> hyl Cert-butyl ether 2.00 ND " <br /> rt-amyl methyl ether 2.00 ND <br /> rrogale: 1,2-DCA44 60.0-140 125 % <br /> • <br /> uoia Analytical -Sacramento *Refer to end of report for test of notes and definitions. <br /> Bald W Bobel,Client Services Representative Page 4 of 8 <br />