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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 100 100 <br /> CAO 92-70 H rocarbons <br /> Monitoring Well Sample Date TEPH-d(pg/L) TEPH-d SG' (pg/L) Notes , <br /> MW-17A 08/15/01 ND<50 NA <br /> 03/07/02 52 ND<50 <br /> 03/27/03 ND<50 NA ' <br /> 03/23/04 ND<50 NA <br /> 03/03/05 ND<50 NA <br /> 12/28/06 ND<50 NA ' <br /> 03/20/07 NA NA <br /> MW-22A 11/18/02 ND<50 NA <br /> 03/26/03 130 x 89 x ' <br /> 11/11/03 300 x 170 x,h <br /> 03/24/04 420 x ND<50 <br /> 11/02/04 ND<50 NA , <br /> 03/01/05 240x ND<50 <br /> 03/14/06 ND<50 NA <br /> 12/28/06 1,700 J NA <br /> 03/21/07 NA ND<48 ' <br /> 11/29/07 ND<50 ND<50 <br /> 03/18/08 170 <48 d <br /> 11/21/08 ND<47 ND<47 ' <br /> 03/17/09 300 76 d <br /> 11/20/09 <53 <56 <br /> Dup 11/20/09 <53 <56 ' <br /> 03/18/10 280 <54 <br /> MW-23A 03/17/10 ND<54 ND<54 <br /> MW-24A 03/17/10 ND<54 ND<54 , <br /> MW-25A 03/17/10 240 ND<53 <br /> MW-26A 03/18/10 ND<54 ND<54 <br /> MW-27A 03/18/10 110 ND<53 <br /> Dup 03/18/10 87 ND<55 ' <br /> TW-03 03/07/02 1300 850 <br /> 11/18/02 94x ND<50 <br /> 03/25/03 710 x,J ND<50 c , <br /> 03/26/04 670 x ND<50 <br /> 11/02/04 970 x ND<50 <br /> 11/08/05 1,000 x,NJ 120 x,NJ ' <br /> 03/14/06 930 x,NJ ND<50 <br /> 12/28/06 890 NA <br /> Dup 12/28/06 990 NA <br /> 03/20/07 NA 280 <br /> 11/29/07 560 210 <br /> 03/20/08 610 <47 <br /> 03/20/08 530 <48 ' <br /> 11/21/08 350 ND<47 d <br /> 03/18/09 510 130 d <br /> 11/20/09 800 ND<52 ' <br /> 03/18/10 2,100 ND<52 <br /> UP Tracy Annual Tables 2010_OC'd_AAV.xlsx ARCADIS Page 8 of 9 , <br />