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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 /> CAO 92-70 Hydrocarbons 100 100 <br /> Monitoring Well Sample Date TEPH-d(pg/L) TEPH-d SG' (pg/L) Notes ' <br /> MW-02B 03/11/02 160 ND<45 <br /> 03/27/03 ND<50 UJ NA b <br /> 03/25/04 ND<50 NA ' <br /> 02/28/05 ND<50 NA <br /> 03/13/06 ND<50 NA <br /> 03/21/07 NA ND<48 ' <br /> 03/20/08 ND<47 NA <br /> 11/20/09 ND<53 ND<52 <br /> 03/16/10 ND<51 ND<51 ' <br /> MW-04A 02/16/01 ND<50 NA <br /> 03/08/02 50 ND<50 <br /> 03/26/03 50 x 55 x <br /> 03/25/04 ND<50 NA t <br /> 03/02/05 ND<50 NA <br /> 03/13/06 ND<50 NA <br /> 03/20/07 NA ND<48 ' <br /> 03/19/08 ND<47 NA <br /> 03/17/09 ND<47 ND<47 <br /> 03/16/10 ND<50 ND<50 ' <br /> MW-05A 11/19/01 150 ND<50 <br /> 03/08/02 110 ND<50 <br /> 03/27/03 100 x,J ND<50 UJ b <br /> 03/25/04 ND<50 NA ' <br /> 03/01/05 ND<50 NA <br /> 03/13/06 ND<50 NA <br /> 03/20/07 NA ND<50 ' <br /> 03/19/08 ND<47 NA <br /> 03/17/09 ND<48 ND<48 <br /> 03/16/10 ND<54 ND<54 ' <br /> Dup 03/16/10 ND<53 ND<53 <br /> MW-06A 02/15/00 480 270 <br /> 03/20/07 FP FP ' <br /> 03/16/09 FP FP <br /> 03/16/10 FP FP <br /> 1 <br /> t <br /> 1 <br /> UP Tracy Annual Tables 2010_OC'd_AAV.xlsx ARCADIS Page 2 of 9 , <br />