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1551 Industrial Road <br /> Sequoia " ��650)2-332-9600 <br /> FAX(650)232-9612 <br /> Analytical www sequoiaiabs com <br /> Gettler-Ryan/Geostrategtes(1) Project Unocal(1) Sampled 6/15100 <br /> 6747 Sierra Court,Suite J Project Number Unocal SS#5098 Received 6/15100 <br /> Dublin,CA 94568 Project Manager Deanna Harding Reported 6/29100 <br /> Total Purgeable Hydrocarbons(C6-C12)and BTEX by DHS LUFT <br /> Sequoia Analytical-San Carlos <br /> Batch Date Date Surrogate Reporting <br /> Anal Number P ared Analyzed Lumts Lnmtt Result Units Notes* <br /> MW-13(continued L006136-06 Water <br /> Benzene 0060089 6/21100 6121/00 0 500 0.633 ug/1 <br /> Toluene NO No0 500 6.71 IN <br /> Ethylbenzene I. of 0 500 1.01 No <br /> Xylenes(total) ON ON 0 500 6.17 IN <br /> Surrogate a,a,a-Tnf7uorotoluene " 600-140 102 % <br /> MW-14 L006136-07 Water <br /> Purgeable Hydrocarbons as Gasoline 0060089 6121/00 6/22100 Soo ND ug/l <br /> Benzene OR IN " 0 500 ND " <br /> Toluene „ of IN 0 500 1.06 to <br /> Ethylbenzene IN „ 0 500 ND OR <br /> Xylenes(total) No " 0 500 1.01 IN <br /> Surrogate aa,a-Trifluorotoluene " of AN600-140 102 % <br /> 4A L006136-01 Water <br /> Purgeable Hydrocarbons as Gasoline 0060089 6/21/00 6/22/00 Soo ND u9/1 <br /> Bye IN No NO 0 500 ND " <br /> Toluene ON 0 500 ND " <br /> Ethylbenune NO 0 500 ND " <br /> Xylenes(total) if 0 500 ND No <br /> Surrogate aa,a-Trifluorotoluene " 600-140 103 % <br /> M• W_5 L006136-09 Water <br /> Purgeable Hydrocarbons as Gasoline 0060089 6121100 6/22/00 Soo ND ug/l <br /> Benzene ON NO 110 500 ND ON <br /> Toluene " to 11 0500 ND No <br /> Ethylbenzcne NoIN 0 500 ND No <br /> Xylenes(total) No No0 500 ND IN <br /> Surrogate a,a,a-Tri luorotoluene NO No600-140 9.52 % <br /> MW-16 L006136-10 Water <br /> Purgeable Hydrocarbons as Gasoline 0060089 6121100 6/22/00 500 ND ug/l <br /> Dt71Lelle IN 0500 ND No <br /> Toluene ON <br /> It 0 500 ND No <br /> Ethylbenzene It " 0 500 ND " <br /> Xylenes. (total) No of NO 0 500 ND No <br /> Surrogate a,a,a-Tnfluorotoluene IN IF if 600-140 965 % <br /> 11+,W--12 L006136-11 Water <br /> Purgeable Hydrocarbons as Gasoline 0060089 6121100 6122/00 500 ND ug/1 <br /> e ,� " " 0 500 ND No <br /> Sequoia Analytical-San Carlos *Refer to end of report for test of notes and definitions <br /> Page 3 of 14 <br />