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819 Striker Avenue,Suite 8 <br /> Sequoia Sacramento, 92 95834 <br /> 1 (916)92f-9600 <br /> fAX(916)921-0100 <br /> 5: Analytical www.sequolalabs.com <br /> wo -9 <br /> Gettler-Ryan-Dublin Project: Chevron 9-0557,Stockton,CA Sampled: 5/17/00 <br /> 6747 Sierra Court,Ste.] Project Number: 386843 Received: 5/22/00 <br /> Dublin,CA 94568 Project Mana er: Deanna L.Harding Reported: 6/6/00 <br /> Total=Purgeable=Hydrocarbons°(C6=C12),==BTEC=and=MTBE=by-DHS_LUI— <br /> Sequoia Analytical-Sacramento <br /> Batch Date Date Surrogate Reporting <br /> lAnable Number Prepared Analyzed Limits Limit Result Units Notes* <br /> MW-4 continued 5005322-05 Water <br /> Methyl tert-butyl ether 0050322 5/26/00 5/26/00 2.50 ND ug/l <br /> Surrogate: a,a,a-Trifluorotoluene 60.0-140 98.1 % <br /> MW-5 5005322-06 Water <br /> Purgeable Hydrocarbons 0050322 5/26/00 5/26/00 50.0 273 ug/lto 1 <br /> 0.500 ND to <br /> Benzene 1.Toluene Q.500 ND <br /> Ethylbenzene 0.500 ND " <br /> Xylencs(total) 0.500 ND " <br /> Methyl tert-butyl ether to " 2.50 ND " <br /> Surrogate: a,a,a-Trifluorotoluene of to 60.0-140 106 % <br /> MW-0 S005322-07 Water <br /> Purgeable Hydrocarbons 0050322 5/26/00 5/26/00 50.0 ND ug/l <br /> Benzene to of it 0.500 ND It <br /> Toluene 0.500 ND 11 <br /> 0.500 ND <br /> Ethylbenzene " <br /> xylenes(total)to" " 0.500 ND <br /> - - - - - <br /> - -- -- ---- - <br /> Meth1 tort-butyl ether "� ——2:50—�--�ND�-- <br /> "--�" --— ---------— - - <br /> of <br /> Surrogate: a,a,a-Trifluorotoluene If60.0-140 102 % <br /> MW-7 5005322-08 Water <br /> Purgeable Hydrocarbons 0050336 5130/00 5130/00 500 1180 uf/l 2,D <br /> " " " 5.00 67.1 D <br /> Benzene <br /> 5.00 ND " D <br /> Toluene <br /> to 5.00 70.6 " D <br /> Ethylbto 5.00 48.9 D <br /> Xylenes(total) <br /> Meth 1 tert-butyl ether 25.0 ND D <br /> " <br /> Surrogate: a,a,a-Trifluorotoluene 60.0-140 73.7 <br /> NW-8 S005322-09 Water <br /> Purgeable Hydrocarbons 0050324 5/26100 5/26100 50.0 ND ug/l <br /> Benzene <br /> " 0.500 ND " <br /> Toluene " 0.500 ND <br /> Ethylbenzene " 0.500 ND <br /> Xylenes(total) to to Ot 0.500 ND " <br /> Methyl tert-butyl ether 2.50 ND to <br /> Surrogate: a,a,a-Tri luorotoluene 60.0-140 99.3 <br /> NM-9 S005322-10 Water <br /> Purgeable Hydrocarbons 0050336 5/30100 5/30/00 25000 59700 ugll 2,13 <br /> Sequoia Analytical-Sacramento *Refer 10 end of report for text of notes and definitions. <br /> Page 3 of 8 <br />