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1551 Industrial Road <br /> Sequoia " 6 Z'2-9640 <br /> i!D FAX(650)732-%12 <br /> DWOAnalytical www sequoW s cOr7 <br /> Gettler-Ryan/Geo9trategnes(1) Project. Unocal(3) Sampled 11/20/00 <br /> 6747 Sierra Court,Suite J Protect Number SS#0187/437 EAST MINER AVE Received 11/20/00 <br /> Dublin,CA 94568 Project Manager Deanna Hardin11/29/00 <br /> Sample Description: U-25 <br /> Laboratory Sample Number: L011193-07 <br /> Batch Date Date Specific Method/ Reporting <br /> Anal Number tMared Analyzed Surrogate Limits Lima Result Units Notes* <br /> Sequoia Analytical-San Carlos <br /> Total Purgeable Hydrocarbons(C6-C121.BTEX and MTHE by DHS LUPI' <br /> Purgeable Hydrocarbons as Gasoline 0110115 11/24/00 11/24/00 500 ND USA <br /> Berizetie n n n 0 500 ND " <br /> Toluene " 0 500 531 " <br /> Ethylbenzene 0 500 0.958 " <br /> Xylenes(total) " 0 500 5.88 " <br /> Methyl tcrt-butyl ether " 500 ND " <br /> Surrogate. a,a,a-Thfluorotoluene " " 700-130 794 % <br /> Volatile Organic Oxveenated Compounds by EPA Method 826dB <br /> Tert-butyl alcohol 0110101 11/21/00 11/21/00 100 ND ug/l <br /> Methyl tat butyl ether n n n 200 ND " <br /> Eh-isopropyl ether " n n 200 ND " <br /> 1 tert-butyl ether " 200 ND " <br /> -amyl methyl ether 200 ND " <br /> Surrogate 1,2 Dichloroethane d4 Ov760-114 103 % <br /> is — <br /> Sequoia Analytical-San Carlos *Refer to end of report for text of notes and dOnraons <br /> Page 8 of 14 <br />