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Sequoia <br />J Chesapeake Drive <br />II'I)4 N. Wiget Lane <br />Redwood City. C' -a3 <br />Walnut Creek, CA,_ -p98 <br />(650) 364-9600 <br />(925) 988-96M <br />FAX (650) 3649233 <br />FAX (925) W-%73 <br />70.0-130 <br />819 Striker Avenue, Suite 8 <br />Sacramento, CA 95834 <br />(916) 921-9600 <br />FAX (916) 921-0100(D <br />Analytical <br />1455 McDowell Blvd. North, Ste. D <br />Petaluma. CA 94954 <br />(707) 792-1865 <br />FAX (707) 792-0342 <br />�V <br />1551 Industrial Road <br />San Carlos, CA 94070-4111 <br />(650) 232-9600 <br />FAX (650) 232-9612 <br />Cambria Environmental Project: Equilon, 1313 E. Charter Way, Stockton, CA Sampled: 4/29/99 <br />270 Perkins Street Project Number: N/A Received: 4/29/99 <br />Sonoma, CA 95476 Project Manager: Aubrey Cool Reported: 5/6/99 <br />Total Purgeable Hydrocarbons (C6-4212), BTEX and MTBE by DHS LUFT/Quality Control'.,' <br />Sequoia Analytical - Sacramento <br />Date Spike Sample QC Reporting Limit Recov. RPD RPD <br />Analyte Analyzed Level Result Result Units Recov. Limits IN Limit % Notes' <br />Blank (continued) 9050050- u <br />Surrogate. a,a,a-Tris luorotoluene 515199 0.200 0.190 mg/kg 60.0-140 95.0 <br />Benzene <br />5/5/99 0.200 <br />0.193 <br />mg/kg <br />70.0-130 <br />96.5 <br />Toluene <br />0.200 <br />0.210 <br />70.0-130 <br />105 <br />Ethylbenzene <br />0.200 <br />0.211 <br />70.0-130 <br />105 <br />Xylenes (total) <br />0.600 <br />0.570 <br />70.0-130 <br />95.0 <br />Methyl tert-butyl ether <br />0.200 <br />0.176 <br />70.0-130 <br />88.0 <br />Surrogate: ata,a-Tri)?uorotoluene <br />0.100 <br />0.184 <br />60.0-140 <br />92.0 <br />Matrix <br />Benzene <br />9050050 -MSI 5905009-08 <br />ND <br />0.181 <br />mg/kg <br />60.0-140 <br />90.5 <br />5/5/99 0.200 <br />Toluene <br />0.200 <br />ND <br />0.186 <br />60.0-140 <br />93.0 <br />Ethylbenzene <br />0.200 <br />ND <br />0.196 <br />60.0-140 <br />98.0 <br />Xylenes (total) <br />0.600 <br />ND <br />0.524 <br />60.0-140 <br />87.3 <br />Methyl tert-butyl ether <br />0.200 <br />ND <br />0.181 <br />60.0-140 <br />90.5 <br />Surrogate: a,a,a-Tris luorotoluene <br />0.100 <br />0.179 <br />60.0-140 <br />89.5 <br />Matrix Spike Deo <br />Benzene <br />9050050-MSDI S905009-08 <br />5/5/99 0.200 <br />ND <br />0.180 <br />mg/kg <br />60.0-140 <br />90.0 <br />25.0 <br />0.554 <br />Toluene <br />0.200 <br />ND <br />0.191 <br />60.0-140 <br />95.5 <br />25.0 <br />2.65 <br />Ethylbenzene <br />0.200 <br />ND <br />0.193 <br />60.0-140 <br />96.5 <br />25.0 <br />1.54 <br />Xylenes (total) <br />0.600 <br />ND <br />0.523 <br />60.0-140 <br />87.2 <br />25.0 <br />0.115 <br />Methyl tert-butyl ether <br />0.200 <br />ND <br />0.178 <br />60.0-140 <br />89.0 <br />25.0 <br />1.67 <br />Surrogate: a,a,a-Tris luoroto/uene <br />0.200 <br />0.183 <br />60.0-140 <br />91.5 <br />Sequoia Analytical - Sacramento "Refer to end of report jar text of notes and definitions. <br />Sandra R. Hanson, Client Services Representative Page 6 of 8 <br />eo <br />