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Sequoia <br />d Chesapeake Drive <br />�. 4 N. Wiget Lane <br />Redwood City, C -.,3 <br />Walnut Creek. Ctif98 <br />(650) 364-9600 <br />(925) 988-9600 <br />FAX (650) 3649233 <br />FAX (925) 988-9673 <br />270 Perkins Street <br />819 Striker Avenue, Suite 8 <br />Sacramento, CA 95834 <br />(916) 921-9600 <br />FAX (916) 921-0100(D �• <br />"i <br />1455 McDowell Blvd. North, Ste. D <br />Petaluma, CA 94954 <br />(707) 792-1865 <br />FAX (707) 792-0342 <br />Analytical <br />1551 Industrial Road <br />San Carlos. CA 94070-4111 <br />(650) 232-9600 <br />FAX (650) 232-9612 <br />Cambria Environmental <br />Project: <br />Equilon, 1313 E. Charter Way, Stockton, CA <br />Sampled: <br />4/29/99 <br />270 Perkins Street <br />Project Number: <br />N/A <br />Received: <br />4/29/99 <br />Sonoma CA 95476 <br />Project Manager: <br />Aubrey Cool <br />Reported: <br />5/6/99 <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 />SP -1A 5905036-01 S02 <br />Purgeable Hydrocarbons 9050044 5/4/99 5/4/99 1.00 5.73 mg/kg <br />Benzene 0.00500 ND " <br />Toluene 0.00500 0.00828 " <br />Ethylbenzene " " 0.00500 0.0127 <br />Xylenes (total) It 0.00500 0.213 <br />Methyl tert-butyl ether 0.0500 0.103 " <br />Surrogate. a,a,a-Tris luorotoluene 60.0-140 91.5 % <br />SP -IB 5905036-02 5911 <br />Purgeable Hydrocarbons 9050044 5/4/99 5/4/99 1.00 ND mg/kg <br />Benzene <br />0.00500 <br />ND <br />" <br />Toluene <br />0.00500 <br />ND <br />" <br />Ethylbenzene <br />0.00500 <br />ND <br />" <br />Xylenes (total) <br />0.00500 <br />ND <br />" <br />Methyl tert-butyl ether <br />0.0500 <br />ND <br />" <br />Surrogate: a,a,a-Trifuorotoluene <br />60.0-140 <br />94.0 <br />% <br />SP -IC <br />S905036-03 <br />5411 <br />Purgeable Hydrocarbons <br />9050044 <br />5/4/99 5/4/99 <br />1.00 <br />38.4 <br />mg/kg 2 <br />Benzene <br />I, <br />0.00500 <br />ND <br />Toluene <br />0.00500 <br />0.0109 <br />Ethylbenzene <br />0.00500 <br />0.0691 <br />" <br />Xylenes (total) <br />0.00500 <br />0.125 <br />Methyl tert-butyl ether <br />0.0500 <br />ND <br />" <br />Surrogate: a,a,a-Tris luorotoluene <br />60.0-140 <br />90.5 <br />% <br />SP -1D <br />S905036-04 <br />5911 <br />Purgeable Hydrocarbons <br />9050044 <br />5/4/99 5/4/99 <br />1.00 <br />ND <br />mg/kg <br />Benzene <br />0.00500 <br />ND <br />Toluene <br />0.00500 <br />ND <br />" <br />Ethylbenzene <br />0.00500 <br />ND <br />" <br />Xylenes (total) <br />0.00500 <br />ND <br />" <br />Methyl tert-butyl ether <br />0.0500 <br />ND <br />" <br />Surrogate: a,a,a-Tris luoratoluene <br />60.0-140 <br />92.5 <br />% <br />IS <br />S905036-06 <br />5411 <br />Purgeable Hydrocarbons <br />9050050 <br />5/5/99 5/5/99 <br />1.00 <br />ND <br />mg/kg <br />Benzene <br />" <br />"1.0.00500 <br />ND <br />" <br />Toluene <br />0.00500 <br />ND <br />" <br />Ethylbenzene <br />0.00500 <br />ND <br />" <br />Xylenes (total) <br />0.00500 <br />ND <br />" <br />Sequoia Analytical - Sacramento 'Refer to end of report for text of notes and definitions. <br />Sandra R. Hanson, Client Services Representative <br />Page 2 of 8 <br />