ARCHIVED REPORTS_2009_2010 ANNUAL MONITORING REPORT

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1 ' Table 3 Free-Product Monitoring Data Union Pacific Railroad Company Former Maintenance Facility,Tracy,California 2009/2010 Annual Groundwater Monitoring Repon Well Date Depth to Depth to Water Product Identification Measured Product Thickness Comments ' (feet btc) (teat btc) (Inches) PZ-09 04/18/05 ND 10.73 0.00 05/05/05 ND 10.75 0.00 06/01/05 ND 9.43 0.00 06/22/05 ND 9.91 0.00 07/08/05 ND 9.86 0.00 07/21/05 ND 10.03 0.00 08/01/05 ND 9.57 0.00 ' 08/11/05 ND 9.75 0.00 09/09/05 ND 10.22 0.00 09/26/05 ND 10.51 0.00 10/12/05 ND 10.58 0.00 ' 10/28/05 ND 10.41 0.00 11/07/05 ND 10.80 0.00 11/30/05 ND 10.88 0.00 12/16/05 ND 11.05 0.00 ' 12/29/05 ND 10.65 0.00 01/09/06 ND 10.42 0.00 01/31/06 ND 10.49 0.00 02/14/06 ND 10.80 0.00 02/21/06 ND 10.79 0.00 03/08/06 ND 10.77 0.00 03/23/06 ND 10.60 0.00 04/17/06 --- --- 0.00 04/27/06 --- --- 0.00 ' 05/10/06 -- - 0.00 05/26/06 0.00 06/13/06 --- --- 0.00 07/06/06 ND 9.40 0.00 07/28/06 ND 9.98 0.00 08/08/06 ND 10.25 0.00 12/27/06 ND 11.06 0.00 03/20/07 ND 11.05 0.00 11/29/07 ND 11.48 0.00 03/28/08 ND 10.76 0.00 08/20/08 ND 11.25 0.00 11/21/08 ND 11.60 0.00 03/16/09 ND 11.26 0.00 11/19/09 ND 11.78 0.00 03/15/10 ND 10.51 0.00 PZ-10 04/18/05 ND 11.20 0.00 05/05/05 ND 11.16 0.00 06/01/05 ND 10.02 0.00 06/22/05 ND 10.37 0.00 07/08/05 ND 10.32 0.00 07/21/05 ND 10.50 0.00 ' 08/01/05 ND 10.04 0.00 08/11/05 ND 10.23 0.00 09/09/05 ND 10.67 0.00 09/26/05 ND 10.94 0.00 10/12/05 ND 11.05 0.00 10/28/05 ND 11.15 0.00 11/07/05 ND 11.26 0.00 11/30/05 ND 11.31 0.00 ' 12/16/05 ND 11.50 0.00 12/29/05 ND 11.13 0.00 01/09/06 ND 10.82 0.00 01/31/06 ND 11.09 0.00 ' 02/14/06 ND 11.30 0.00 02/21/06 ND 11.29 0.00 UP Tracy Annual Tables 2010_OC'tl AAV.zlsz ARCADIS Page 5 of