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Sequoia 819 Striker Avenue suite 8 <br /> 4 Sacramento CA 95834 <br /> (916)921-9600 <br /> Analytical <br /> FAX(916)921-0100 <br /> 0 <br /> EMCON/IT- Sacramento Project ARCO 2130 Stockton,CA Sampled 3/16/00 <br /> 1433N Market Blvd,#1 Project Number 803879 Received 3117/00 <br /> Sacramento,CA 95834 Protect Manager Dave Foley Reported 3124/00 <br /> Total Purgeable Hydrocarbons(C6-02),BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical-Sacramento <br /> Batch Date Date Surrogate Reporting <br /> Analyte Number Prepared Analyzed Limits Limit Result Units Notes* <br /> _MW-5(74')(continued) S003246-05 Water <br /> Methyl tert-butyl ether 0030246 3/23100 3123/00 2 50 493 ug/l _ <br /> Surrogate a,a,a-Trifluorotoluene 600-140 110 % <br /> MW-6(72') S003246-06 Water <br /> Purgeable Hydrocarbons 0030246 3/23/00 3/23/00 500 ND ug/l <br /> Benzene 0 500 ND " <br /> Toluene 0 500 ND <br /> Ethylbenzene 0 500 ND " <br /> Xylenes(total) 0 500 ND " <br /> Methyl tert-butyl ether 2 50 ND <br /> Surrogate a a a-Trifluorotoluene 600-140 114 <br /> MW-7(72') 5003246-07 Water <br /> Purgeable Hydrocarbons 0030246 3123100 3/23/00 500 ND ug/l <br /> Benzene 0 500 ND " <br /> Toluene 0 500 ND " <br /> Ethylbenzene 0 500 ND " <br /> Xylenes(total) 0 500 ND " <br /> Methyl tent-butyl ether 250 _ND_ <br /> Surrogate a a a-Trifluorotoluene " 600-140 105 % <br /> MW-10(71') 5003246-08 Water <br /> Purgeable Hydrocarbons 0030246 3123100 3/23/00 500 270 ug/l 1 <br /> Benzene 0 500 0 741 " <br /> Toluene 0 500 ND " <br /> Ethylbenzene 0 500 ND " <br /> Xylenes(total) 0 500 ND " <br /> Methyl tert-butyl ether "_ f 2 50 _ 595 <br /> Surrogate a,a a-Trifluorotoluene 600-140 119 % <br /> I <br /> Sequoia Analytical- Sacramento *Refer to end of report for text of notes and definitions <br /> Page 3of9 <br />