ARCHIVED REPORTS_2009_2010 ANNUAL MONITORING REPORT

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Table 5 Halogenated Volatile Organic Compound Groundwater Analytical Results Union Pacific Railroad Company Former Maintenance Facility,Tracy, California 2009/2010 Annual Groundwater Monitoring Report Cleaup Levels DR-98-213 200 5 16.0 6.0 10 0.69 2.3 0.13 NA Cleanup Levels(WDR-97-707)' 200 5.0 0.06 5.0 6.0 10 0.7 5.0 0.015 NA cis-1,2- trans-1,2- Vlnyl Total Noes Well ID Date Sampled 1,1,1-TCA 1,1-DCA 1,1-DCE Chloroethane DC E DCE PCE TCE Chloride HVOCs MW-04A 02/16/01 ND<1 NO<1 ND<1 NO<1 NO<1 NO<1 NO<1 NO<1 NO<0.5 NO 03/08/02 ND<1 NO<1 ND<1 NO<1 ND<t NO<1 NO<7 NO<1 NO<0.5 NO 03/26/03 ND<1 NO<1 NO<1 NO<1 ND<t NO<1 NO<1 NO<1 NO<1 NO 03/25/04 ND<1.0 NO<1.0 NO<1.0 ND<1.0 NO<1.0 ND<1.0 NO<1.0 NO<10 ND<1.0 ND 03/02/05 ND<1.0 NO<1.0 ND<1.0 ND<1.0 NO<1.0 ND<1.0 NO<1.0 NO<1.0 NO<1.0 ND 03/13/06 NO<1.0 NO<1.0 ND<1.0 NO<1.0 ND<1.0 NO<1.0 ND<1.0 NO<1.0 NO<1.0 ND 03/20/07 ND<0.5 NO<0.5 ND<0.5 NO<1.0 ND<0.5 ND<0.5 NO<0.5 ND<0.5 NO<0.5 ND 03/19/06 ND<0.5 ND<0.5 ND<0.5 NO<0.5 ND<0.5 NO<0.5 ND<0.5 NO<0.5 NO<0.5 NO 03/17/09 ND<0.5 ND<0.5 ND<0.5 NO<0.5 ND<0.5 NO<0.5 ND<0.5 ND<0.5 ND<0.5 ND 03/16/10 No<0.5 No<0.5 ND<0.5 No 0.0 No<0.5 No<0.5 NO<0.5 No<0.5 No<0.5 No MW-05A 11/19/01 ND<1 NO<1 ND<1 NO<1 ND<1 ND<1 NO<1 NO<1 NO<0.5 NO 03/08/02 ND<1 ND<1 ND<1 NO<1 ND<1 ND<1 NO<1 NO<1 NO<0.5 NO 03/27/03 ND<1 UJ ND<1 UJ ND<1 UJ ND<1 UJ NO<1 UJ ND<1 UJ ND<1 UJ ND<1 UJ NO<1 UJ ND 03/25/04 ND<1.0 ND<1.0 ND<1.0 NO<1.0 ND<1.0 NO<1.0 ND<1.0 NO<1.0 ND<1.0 ND 03/01/05 ND<1.0 NO<1.0 NO<1.0 NO<1.0 NO<1.0 NO<1.0 ND<1.0 NO<1.0 ND<1.0 NO 03/13/06 No<1.0 NO<1.0 NO<1.0 NO<l o NO<1.0 NO<1.0 NO<1.0 ND<1.0 ND<1.0 ND 03/20/07 ND<0.5 ND<0.5 ND<0.5 ND<1.0 ND<0.5 NO<0.5 ND<0.5 ND<0.5 ND<0.5 ND 03/19/08 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<0.5 NO<0.5 NO<0.5 ND<0.5 ND<0.5 ND 03/17/09 ND<0.5 NO<0.5 ND<0.5 ND<0.5 ND<0.5 NO<0.5 NO<0.5 NO<0.5 NO<0.5 NO 03/16/10 ND<0.5 NO<0.5 NO<0.5 ND<1.0 ND<0.5 ND<0.5 NO<0.5 NO<0.5 NO<0.5 NO Dup 03/16/10 No<0.5 No<0.5 No<0.5 No<1.0 NO<0.5 No 4.5 NO<0.5 NO<0.5 NO<0.5 NO MW-06A 02/15/00 NO<1 ND<1 ND<1 NO<1 NO<1 NO<1 NO<1 NO<1 NO<0.5 NO 03/20/07 NA NA NA NA NA NA NA NA NA NA 03/17/09 NA NA NA NA NA NA NA NA NA NA UP Tracy Annual Tables 2010_DC'd_AAV.xlsx ARCAD IS Page 3 of 15