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Sequoia $19 Avenue Suite 4 ID Sacramento CA 95834 I (916)921-9600 Analytical FAX (916)92 l-0 100 i SECOR International-Sacramento Project ARCO 595, Stockton,CA Sampled 9/10/99 to 9/14/99 9912 Business Park Dr,Ste 100 Project Number N/A Received 9/15/99 Sacramento,CA 95827 Project Manager Rusty Benkosky Reported 9/27/99 Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT Sequota Analytical-Sacramento Batch Date Date Surrogate Reporting Analyte Number Prepared Analyzed Limits Limit Result Units Notes* D-1 S909240-01 Soil Purgeable Hydrocarbons 9090220 9/21/99 9/21/99 250 5370 mg/kg 1,13 Benzene 1 25 303 D Toluene 125 155 D Ethylbenzene 125 813 D Xylenes(total) 1 25 362 D Methyl tert-butyl ether l2 5 ND D Surrogate a a a-Trefluorotoluene " " " 600-140 116 D-1 Q}5' 5909240-02 Soil Purgeable Hydrocarbons 9090220 9/21/99 9/21/99 100 1830 mg/kg I'D Benzene 0 500 208 D Toluene 0 500 196 D Ethylbenzene 0 500 190 D es(total) 0 500 929 D 1 tert-butyl ether 500 ND D Surrogate a,a,a-Trifluorotoluene 600-140 116 D-2a 5' 5909240-03 Soil Purgeable Hydrocarbons 9090220 9/21/99 9/21/99 200 220 mg/kg 1,D Benzene 0100 138 D Toluene 0 100 572 D Ethylbenzene 0 100 377 D Xylenes(total) 0 100 18 7 D Methyl tert-butyl ether 1 00 _ ND D Surrogate a a a-Trifluorotoluene " " 600-140 111 % D-3 4 5' S909240-04 Soil Purgeable Hydrocarbons 9090220 9/21199 9/21/99 500 7670 mg/kg 1,13 Benzene 2 50 45 2 D Toluene 2 50 294 D Ethylbenzene 250 127 D Xylenes(total) 250 582 D Methyl tert-butyl ether _ " 25 0 --.ND D Surrogate a a a-Trrfluorotoluene 600-140 114 D-4@5' 5909240-05 Soil Purgeable Hydrocarbons 9090220 9/21199 9/21/99 500 4280 mg/kg l,D Benzene 250 483 D Toluene 250 195 D Ethylbenzene 250 765 D YdmLenes(total) 250 351 D Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definitions ,p Page 3 of 19 `bc!