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' •, r . Table 7 • <br /> Soil Vapor Data-All Sampling Events <br /> CorocoPhillips <br /> Former Unocal Bulk Plant No.0788 <br /> 8203 E.11th Street <br /> Tracy CA <br /> Sample Sample Location Sample Date TPH-G Benzene Toluene Ethylbenzene m,p-Xylenes o-Xylenes MTBE 1,1-difluoroelhane <br /> Name Correlation Depth(tt) Sampled (pglm') (pg/m') Winn") (pglm') Winn ) (pgim') (pglm,) (pg/1) <br /> Initial Excavation performed May 2009 <br /> SG-1" - <br /> 5.0' 6/8/2009 14,000 25 73 18 69 24 <5.0 00 <br /> SG-2" - 5.0' 6/8/2009 12,000 16 47 12 42 15 <5.0 <10 <br /> SG-3" - 5.0' 6/8/2009 3,700,000 <0.4 <4.0 <2.0 <2.0 <2.0 <2.0 <10 <br /> SGAk - 5.0' 6/8/2009 6,300,000 <2.0 <20 <10 <10 <70 <10 <10 <br /> SG-5" - 5.0' 6/8/2009 220,000 <50 <50 <50 <60 <50 <50 <10 <br /> SG-6 Re-sample of SG-1 5.0' 11/6/2009 <br /> <10,000 15 200 51 230 61 <5.0 <10 <br /> SG-7 Re-sample of SG-2 5.0' 11/6/2009 <10.000 32 200 96 300 70 <5.0 <10 <br /> SG-8 Re-sample of SG-3 5.0' 1116/2009 350,000 91 310 170 300 91 <br /> <5.0 <1.0 <br /> SG-9 Re-sample of SG-4 5.0' 11/6/2009 <10,000 20 190 47 190 54 <5.0 <10 <br /> SG-10 Re-sample of SG-5 5.0' 1116/2009 <br /> <10,000 17 190 140 440 93 <5.0 <10 <br /> SG-11 Re-sampleofSG-31SG-8 5.0' 6/16/2010 100,D00 31 32 6.4 24 11 <5.0 <10 <br /> Focused Excavation performed November 8-12,2010 <br /> Re-sample of SG-3/SG- <10 <br /> SG-12 8/SG-11 5.0' 2/8/2011 <10,000 5.7 18 5.1 18 6.7 <3.7 <br /> SG-12D Duplicate Sample 5.0' 2/8/2011 <br /> <10.000 4.1 10 <4.4 9.2 -4.4 <3.7 <10 <br /> ESLs Ra 10,000 84 63,000 980 21,000 21,000 9.400 - <br /> ESLs C/Ic 29,000 280 180000 3,300 58,000 58,000 31,000 - <br /> ND=not detected at or above the reporting limit. <br /> pg/m3=micrograms per cubic meter <br /> Ug/I=micgrams per liter <br /> Analyzed by EPA Method TO-15 <br /> "Contained Tentatively Identified Compounds(TIC)-full data available in the Closure Assessment Activities Report submitted on July 30,2009 <br /> s ESL's=Environmental Screen Levels,San Francisco Bay Region,Residential <br /> c ESL's=Environmental Screen Levels,San Francisco Bay Region,Commerical/Industrial Land Use <br /> C:\DOCUME-1\staH\LOCALS-1\TempU(Pgrpwise\0788 Complete soil vapor table 04-2011.x1s <br /> Page 1 <br />