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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (o50) 364 9600 FAX(650)364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (9Z5)988 9600 FAX(925)988 9673 <br /> Analytical 819 Striker Avenue Suite 8 Satranient0 CA 95834 (916)9Z1 9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707) 792-1865 [AX(707)79Z 0342 <br /> SECOR International Project ARCO 2133,Stockton CA Sampled 9/10/98 <br /> 9912 Business Pat Drive Ste 100 Project Number Contract#22232 03 Received 9/14/98 <br /> Sacramento,CA 95827 Project Manager Rusty Benkosky Reported 9/28/98 <br /> I otal Purgeable Hadi ocarbons (C6-C12), BTEX and 142TBE by DHS LUF 1 <br /> Sequoia Analytical -Sacramento <br /> Batch Date Date Surrogate Reporting <br /> Analyte Number Prepared Analyzed Lit-nits Limit Result Units Notes* <br /> n1W-1 5809156-01 ;1 'ater <br /> Purgeable Hydrocarbons 8090205 9121198 9/21/98 500 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 5 00 ND <br /> Surrogate a o a Ti ifluoi otoluene 600-140 923 % <br /> MW-2 5809156-02 Water <br /> Purgeable hydrocarbons 8090205 9121/98 9/21/98 500 157 ug/l 1 <br /> Benzene 0 500 0 783 " <br /> Toluene 0 500 ND " <br /> Ethylbenzene 0 500 ND " <br /> qWlenes(total) 0 500 0 604 " <br /> hyl tert-butyl ether _ 500 ND <br /> urrogate a a a-Trrfluorotoluene 600-140 965 % <br /> r <br /> MW-3 5809156-03 Water <br /> Purgeable Hydrocarbons Y 8090205 9121198 9121/98 500 ND ug/1 <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 Soo ND " <br /> Surrogate aaa-Trtumotoluene 600-140 98 6 % <br /> MW-4 5809156-04 Water <br /> Purgeable Hydrocarbons 8090205 9121198 9/21/98 Soo 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 5 00 ND ' <br /> Surrogate a a a-Trzfluorotohzene " 600-140 965 % <br /> MW-5 $809156 Water <br /> Purgeable Hydrocarbons 8090205 9/21/98 9/21/98 Soo ND ug/1 <br /> Benzene 0 500 ND " <br /> Toluene 0 500 ND <br /> Ethylbenzene 0 500 ND " <br /> lenes(total) 0 500 ND " <br /> equola Analytical -Sacramento *Refer to end of r eport for text of notes and definuzons <br /> 1 � <br /> 0,d, chnei er, Laboratory Director page 2 of 5 <br />