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1 <br /> Table 4 <br /> Total Extractable Petroleum Hydrocarbons as Diesel Groundwater Analytical Results , <br /> Union Pacific Railroad Company <br /> Former Maintenance Facility,Tracy, California <br /> 2009/2010 Annual Groundwater Monitoring Report ' <br /> Cleanup Levels Total Petroleum <br /> (,AO 92-70 H rowrbons 100 100 <br /> Monitoring Well Sample Date TEPH-d(pg/L) TEPH-d SG° (pg/L) Notes ' <br /> MW-10A 11/19/02 400x ND<50 <br /> 03/27/03 610 x ND<50 <br /> 11/12/03 370 x 200 x ' <br /> 03/22/04 600 x ND<50 <br /> 11/02/04 460 x ND<50 <br /> 03/02/05 650 x ND<50 ' <br /> 11/08/05 510 x,NJ 110 x,NJ <br /> Dup 11/08/05 500 x,NJ 110 x,NJ <br /> 03/13/06 310 x,NJ ND<50 ' <br /> 12/28/06 510 J NA <br /> 03/20/07 NA 170 <br /> 11/29/07 300 220 , <br /> 03/20/08 430 67 d <br /> 11/21/08 210 ND<48 d <br /> 03/18/09 210 51 d <br /> 11/20/09 230 ND<52 d ' <br /> 03/18/10 240 ND<51 d <br /> MW-108 02/15/01 ND<50 NA <br /> 03/11/02 ND<50 NA ' <br /> 03/27/03 310 a,J 320 a,J b <br /> 03/22/04 ND<50 NA <br /> 03/02/05 ND<50 NA , <br /> 03/13/06 ND<50 NA <br /> 03/21/07 NA ND<50 <br /> 03/19/08 ND<47 NA <br /> 03/17/09 ND<47 ND<47 ' <br /> 03/16/10 ND<51 ND<51 <br /> MW-11A 02/09/00 380 170 <br /> 02/13/01 2400 590 ' <br /> 11/18/02 12,000 x 7,300 x <br /> 11/02/04 23,000 x 19,000 x <br /> 03/08/06 55,000 NJ 53,000 NJ <br /> 03/20/07 NA 49,000 , <br /> 03/20/08 35,000 G 32,000 G W <br /> 03/16/09 FP FP <br /> 03/16/10 FP FP ' <br /> MW-11BR 02/15/00 ND<50 NA <br /> 02/16/01 ND<50 NA <br /> 03/11/02 ND<50 NA ' <br /> 03/02/05 ND<50 NA <br /> 03/21/07 NA ND<49 <br /> 03/19/08 380 110 d <br /> 03/17/09 ND<47 ND<47 ' <br /> 03/16/10 ND<51 ND<51 <br /> t <br /> UP Tracy Annual Tables 2010 QC'd_AAV.xlsx ARCADIS Page 4 of 9 , <br />