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Table 4 <br /> Historical Halogenated Volatile Organic Compound Groundwater Analytical Results <br /> Union Pacific Railroad Company <br /> Former Maintenance Facility,Tracy,California <br /> 2010/2011 Annual Groundwater Monitoring Report <br /> Cleaup Levels(WDR-98-213) 200 5 16.0 6.0 10 0.69 2.3 0.13 NA <br /> Cleanup Levels(WDR-97-707)a 200 5.0 0.06 5.0 6.0 10 0.7 5.0 0.015 NA <br /> cis-1,2- trans-1,2- Vinyl Total Notes <br /> Well ID Date Sampled 1,1,1-TCA 1,1-DCA 1,1-DCE Chloroethane DCE DCE PCE TCE Chloride HVOCs <br /> 11/20/09 ND<0.5 ND<0.5 ND<0.5 ND<1.0 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND <br /> 03/18/10 ND<0.5 ND<0.5 ND<0.5 ND<1.0 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND <br /> TW-04 08/15/01 ND<1 1.78 ND<1 ND<1 ND<1 ND<1 ND<1 ND<1 1.05 2.83 <br /> 11/19/01 ND<1 2.67 ND<1 ND<1 ND<1 ND<1 ND<1 ND<1 ND<0.5 2.67 <br /> 11/18/02 ND<0.5 2 ND<0.5 ND<1 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<0.5 2 <br /> 03/27/03 ND<1 UJ 1.3 J ND<1 UJ ND<1 UJ ND<1 UJ ND<1 UJ ND<1 UJ ND<1 UJ ND<1 UJ 1.3 <br /> 11/02/04 ND<1.0 6.1 ND<1.0 ND<1.0 0.23 J ND<1.0 ND<1.0 ND<1.0 3.3 9.63 <br /> 03/08/06 ND<1.0 9.8 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 9.8 <br /> Dup 03/08/06 ND<1.0 9.4 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 9.4 <br /> 12/28/06 ND<0.50 9.0 ND<0.50 ND<1.0 ND<0.50 ND<0.50 ND<0.50 ND<0.50 ND<0.50 9.0 <br /> 03/20/07 ND<0.5 5.4 ND<0.5 ND<1.0 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<0.5 5.4 <br /> 03/17/09 NA NA NA NA NA NA NA NA NA NA <br /> 11/19/09 NA NA NA NA NA NA NA NA NA NA <br /> 03/15/10 NA NA NA NA NA NA NA NA NA NA <br /> Trip Blank 03/18/08 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND <br /> 03/16/10 ND<0.5 ND<0.5 ND<0.5 ND<1.0 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND <br /> 03/16/10 ND<0.5 ND<0.5 ND<0.5 ND<1.0 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND <br /> Notes appear on the following page. <br /> Notes&Key: <br /> All units are in n 11/20/09 <br /> 'Exceedences of cleanup levels specified in the RWQCB Cleanup and Abatement Order 92-707 are indicated in bold type <br /> Total HVOCs includes a detection of bromomethane <br /> `In addition,benzene was detected at 2 pg/L <br /> In addition,benzene was detected at 4.3 pg/L and o-xylene at 0.42 j pg/L <br /> 'Total HVOCs includes a detection of benzene at 0.4 J and toluene at 0.78 J pg/L <br /> f In addition,benzene was detected at 0.19 j pg/L <br /> 9 In addition,benzene was detected at 2.1 j pg/L <br /> 'Total HVOCs includes a dection of bromoform <br /> 'Total HVOCs includes a dection of 1,2-dichlorobenzene <br /> Reporting limit is elevated due to matrix interference <br /> "In addition,benzene was detected at 2.6 pg/L <br /> In addition,benzene was detected at 0.59 pg/L <br /> Dup=Duplicate <br /> NA=Not applicable <br /> ND< =Not detected at or above the value listed after the less-than sign <br /> HVOCs=Halogenated volatile organic compounds <br /> Data Qualifiers(Laboratory) <br /> UP Tracy Annual Tables 1-5 2011.xlsx ARCADIS Page 10 of 11 <br />