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1551 Industrial Road <br /> S e q� i O l a San Carlos, CA 94070-4111 <br /> 4 -4- - -_(650) 232-9600 <br /> Analytical FAX(650) 232-9612 <br /> Gettler-Ryan/Geostrategtes Project Tosco Sampled 4/10/00 <br /> 6747 Sierra Court,Suite D Project Number- Unocal SS#1205 Received 4/10100 <br /> Dublm,CA 94568 Project Mane er Deanna Hardined 4124100 <br />_ Sample Description: W __ MW-2--- <br /> Laboratory <br /> W_2—_Laboratory Sample Number: L004097-03 <br /> Batch Date Date , Specific Method/ Repomng <br /> Anal Number PIMared Analyzed Surrogate Limits Limit Result Units Notes* <br /> Sequoia Analytical-San Carlos <br /> Total Purpeable Hydrocarbons C6-C12 BTEX and MTBE by DHS <br /> Purgeable Hydrocarbons as Gasoline 0040080 4/17100 4/I8/00 5000 31300 ug/l 1 <br /> Benzene 50 0 335 " <br /> Toluene 500 1220 " <br /> Ethylbenzene 500 2390 " <br /> Xylenes(total) 500 8660 „ <br /> Methyl tert-butyl ether " 500 ND " <br /> Surrogate a,aa-Tnfluorotoluene " 700-130 978 % <br /> Volatile Organic Com ounds hj EPA Method 8260 <br /> Ethanol 0040056 4112100 4112/00 20000 ND 119/1 <br /> Di-isopropyl ether „ 40 0 ND It <br /> Ethyl Cert-butyl ether " 40 0 ND is <br /> Methyl tert-butyl ether " 400 532 " <br /> Tert-amyl methyl ether 400 ND " <br /> Tert-but1 alcohol 2000 ND " <br /> Surrogate 1,2-Dichloroethane44 " 760-114 972 % <br /> Sequoia Analytical-San Carlos *Refer to end of report for text of notes and definitions <br /> Page 4 of 11 <br />