COMPLIANCE INFO_FILE 6 - Laserfiche WebLink

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Table 1 Historical Product Measurement and Thickness Union Pacific Railroad Company Former Tracy Maintenance Facility Tracy,California Depth to Product Product Well Date Product Depth to Water Thickness Volume Identification Measured (feet btc) (feet btc) (inches) (gal) Comments TW-01 11/19/2001 10.71 11.23 6.2 0.34 TW-01 3/5/2002 10.20 10.90 8.4 0.46 TW-01 11/18/2002 10.58 10.89 3.7 0.20 TW-01 3/24/2003 ND 11.42 0.0 0.00 TW-01 11/10/2003 10.95 10.% 0.1 0.01 TW-01 1/5/2004 10.28 10.98 8.4 0.46 Removed socks on Dec 15 TW-01 1/15/2004 10.2 10.38 2.2 0.12 Replaced socks TW-01 3/22/2004 10.44 10.45 0.1 0.01 Removed socks on Feb 23 TW-01 3/31/2004 10.35 10.91 6.7 0.37 Replaced socks TW-01 7/26/2004 9.43 9.95 6.2 0.34 Replace sock TW-01 7/29/2004 NM NM NM NM Replace sock TW-01 8/16/2004 10.07 10.10 0.4 0.02 Replace sock TW-01 8/23/2004 ND 10.36 0.0 0.00 Remove sock TW-01 9/10/2004 10.72 10.98 3.1 0.17 Replace sock TW-01 9/29/2004 10.8 10.95 1.8 0.10 Replace sock TW-01 10/14/2004 10.65 10.87 2.6 0.14 Remove sock for sampling TW-01 11/1/2004 ND 10.59 0.0 0.00 TW-01 11/12/2004 9.5 10.00 6.0 0.33 Install sock TW-01 12/3/2004 11.75 11.81 0.72 0.04 Install sock TW-01 12/13/2004 10.76 11.40 7.7 0.42 Replace sock TW-01 1/19/2005 10.1 10.47 4.44 0.24 Replace sock TW-01 2/1/2005 10.07 10.25 2.16 0.12 Replace sock TW-01 2/16/2005 NM NM NM NM Removed sock for sampling TW-01 2/28/2005 9.78 11.45 20.0 1.09 TW-01 3/7/2005 ND 9.64 0.0 0.00 Sheen- TW-01 3/21/2005 ND 9.00 0.0 0.00 Sheen TW-01 3/31/2005 ND 9.86 0.0 0.00 Sheen TW-01 4/18/2005 ND 10.16 0.0 0.0 Sheen TW-01 5/5/2005 ND 10.20 0.0 0.0 Sheen TW-01 6/1/2005 ND 9.18 0.0 0.0 TW-01 6/22/2005 9.38 9.45 0.8 0.0 Install sock TW-01 7/8/2005 ND 9.30 0.0 0.0 Remove sock TW-01 7/21/2005 ND 9.50 0.0 0.0 TW-01 8/1/2005 ND 9.10 0.0 0.0 TW-01 8/11/2005 ND 9.28 0.0 0.0 TW-01 9/9/2005 ND 9.66 0.0 0.0 TW-01 9/26/2005 ND 9.93 0.0 0.0 TW-01 10/12/2005 ND 10.00 0.0 0.0 TW-01 11/7/2005 10.21 10.25 0.48 0.03 TW-01 12/16/2005 10.50 10.51 0.12 0.01 Trace Product TW-01 12/29/2005 10.11 10.20 1.08 0.06 Install socks TW-01 1/9/2006 ND 9.86 0.0 0.0 Remove socks TW-01 1/31/2006 ND 10.12 0.0 0.0 TW-01 2/14/2006 10.31 10.32 0.12 0.01 TW-01 2/21/2006 10.2 10.21 0.12 0.01 TW-01 3/8/2006 10.17 10.21 0.48 0.03 Install socks TW-01 3/23/2006 ND 10.00 0.0 0.0 Remove socks TW-01 4/17/2006 ND 9.75 0.0 0.0 TW-01 4/27/2006 ND 9.98 0.0 0.0 TW-01 5/10/2006 ND 10.18 0.0 0.0 TW-01 5/26/2006 ND 9.90 0.0 0.0 TW-01 6/13/2006 ND 8.88 0.0 0.0 TW-02 3/16/95 9.70 10.01 3.72 0.20 Product removed by bailer. TW-02 4/06/95 9.80 10.60 9.60 0.52 Product removed by bailer. TW-02 4/17/95 10.00 10.58 6.% 0.38 Product removed by bailer. TW-02 5/15/95 10.26 10.48 2.64 0.14 Product removed by bailer. TW-02 6/26/95 NA 9.35 sheen 0.000 No measurable product-sheen only. TW-02 7/11/95 8.62 8.66 0.48 0.03 Product removed by bailer. TW-02 7/25/95 8.81 8.90 1.08 0.06 Measurement of free product layer. Install PVC casing partially filled with Nochar TW-02 8/10/95 9.24 9.48 2.88 0.16 material. ERM Page 11 of 16 UPRR/0020500.56-8/24/2006