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1551 Industrial Road <br /> Sequoia San Carlos CA 94070-4111 <br /> (650) 232-9600 <br /> rAnalytical fAX(650) 232-9612 <br /> GeRler-Ryan/Geostrategies(1) Project Unocal(1) Sampled 12/13/99 <br /> 6747 Sierra Court,Suite D Project Number Unocal SS#5098 Received I2/14/99 <br /> Dublin,CA 94568 Project Manager Scott Polston ETorted 12/29/99 <br /> Sample Description MW-15 <br /> Laboratory Sample Number- L912123-09 <br /> Batch Date Date Specific Method/ Reporting <br /> lAnalyte Number Prepared Analyzed Surrogate Limits Limit Result Units Notes* <br /> Seauola Analytical-San Carlos <br /> Total Pur eable Hydrocarbons C6-C12 and BTEX by DHS LUFT <br /> Purgeable Hydrocarbons as Gasoline 9120124 12/24/99 12/24/99 500 ND ug/1 <br /> Benzene 1. <br /> It <br /> It 0 500 ND <br /> Toluene if It <br /> „ 0 500 ND ” <br /> Ethylbenzene It <br /> „ 0 500 ND ” <br /> Xylenes(total) It <br /> it 0 500 ND " <br /> Surrogate a,a,a-Tri luorotoluene a600-140 911 <br /> Volatile Organic Compounds by EPA Method 8010B <br /> Freon 113 9120094 12/22/99 12/22/99 100 ND ug/I <br /> Bromodichloromethane 0 500 ND " <br /> Bromoform 0 500 ND " <br /> Br methane 100 ND " <br /> C tetrachloride 0 500 ND ' <br /> Ch robenzene 0 500 ND <br /> Chloroethane 100 ND " <br /> 2-Chloroethylvinyl ether 1 00 ND " <br /> Chloroform 0 500 ND " <br /> Chloromethane 100 ND " <br /> Dibromochloromethane 0 500 ND " <br /> 1,3-Dichlorobenzene 0 500 ND " <br /> 1,4-Dichlorobenzene 0 500 ND " <br /> 1,2-Dichlorobenzene It <br /> to 1 0 500 ND " <br /> 1,1-Dighloroethane 11 0 500 ND " <br /> 1,2-Dichloroetbane IP 0 500 ND to <br /> 1,1-Dichloroethene 0 500 ND I. <br /> cis-1,2-Dichloroethene 0 500 ND " <br /> trans-1,2-Dichloroethene 0 500 ND " <br /> 1,2-Dichloropropane 0 500 ND " <br /> cis-1,3-Dichloropropene 0 500 ND " <br /> trans-l,3-Dichloropropene 0 500 ND " <br /> Methylene chloride 5 00 ND " <br /> 1,1,2,2-Tetrachloroethane U SUO ND <br /> Tetrachloroethene 0 500 ND <br /> 1,1,1-Tnchloroethane 0 500 ND " <br /> 1,1,2-Tnchloroethane 0 500 ND " <br /> Trichloroethene 0 500 ND " <br /> Tnchlorofiuoromethane 0 500 ND " <br /> Vinyl chlonde 0 500 ND " <br /> Sate 1-Chloro-1 fluorobenzene " 700-130 93 0 % <br /> Sequoia Analytical-San Carlos *Refer to end of report for text of notes and definitions <br /> Page 10 of 3 1 <br />