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i Table B-Historical Diesel Thickness Measurements and Product Recovery Data (6/18/99 through 11/9/05) Date n Recovery Depth to Depth to Diesel Cumulative Operations and Maintenance Notes Well Floating Groundwater Thickness Diesel Diesel Removed (gallons) 6/18/99 RW-2 8.71 8.98 0.27 0.00 Pump set to 15 cycles per minute/10 minutes per hour 6/21/99 RW-2 8.99 9.16 0.17 <0.5 Pump adjusted to 20 cycles per minute/10 minutes per hour 6/28/99 RW-2 9.24 9.26 0.02 1.00 Same settings. 7/I/99 RW-2 9.30 9.47 0.17 1.20 System discovered not operating;nitrogen tank recharged.Settings maintained. 7/6/99 RW-2 9.58 9.60 0.02 1.20 Settings maintained. 7/8/99 RW-2 9.55 9.57 0.02 1.20 Pump set to 20 cycles per minute/5 minutes per hour;skimmer lowered one foot to 11.5 feet Product globules in RW-1,4,&6. RW-1 8.56 8.57 0.01 7/12/99 RW-2 9.71 9.72 0.01 1.40 Skimmer turned off.Settings maintained. RW-5 8.70 8.72 0.02 RW-1 8.73 8.75 0.02 7/15/99 RW-2 9.71 9.75 0.04 1.40 Skimmer turned on.Settings maintained. RW-5 9.78 9.80 0.02 RW-1 8.81 8.83 0.02 7/19/99 RW-2 9.85 9.86 0.01 1.50 Skimmer turned off.Settings maintained. RW-5 9.86 9.88 0.02 RW-1 8.90 8.92 0.02 Skimmer turned on.Settings changed to 20 cycles per minute/5 minute cycle/1 cycle per 7/23/99 RW-2 9.86 10.02 0.04 1.50 RW-6. RW-5 8.98 9.00 0.02 day.Sheen in RW-1 9.13 9.15 0.02 7/29/99 RW-2 10.11 10.14 0.03 1.90 Settings maintained. RW-5 10.17 10.19 0.02 RW-1 9.15 9.17 0.02 8/6/99 RW-2 10.12 10.14 0.02 2.00 Settings maintained.Skimmer depth increased 0.75 foot to 12.25 feet. RW-5 9.21 9.22 0.01 RW-1 9.23 9.25 0.02 8/12/99 RW-2 10.20 10.22 0.02 2.10 Skimmer turned off. RW-5 9.28 9.29 0.01 RW-1 9.33 9.35 0.02 8/23/99 RW-2 10.25 10.52 0.27 2.10 Skimmer turned on.Settings maintained.DTW has stabilized.Sheen observed in RW-4. RW-5 9.38 9.42 0.04 RW-1 9.43 9.45 0.02 8/30/99 RW-2 10.40 10.43 0.03 2.70 Settings maintained RW-5 9.46 9.52 0.06 RW-1 8.92 8.93 0.01 9/7/99 RW-2 9.81 9.82 0.01 3.10 Settings maintained RW-5 8.95 8.99 0.04 RW-2 8.71 8.72 0.01 9/14/99 3.10 Skimmer tanned off.Quarterly monitoring RW-4 7.75 7.76 0.01 RW-2 8.24 8.31 0.07 9/20/99 3.10 Skimmer tamed on.Skimmer level raises 2 feet Settings maintained. RW-5 6.80 6.81 0.01 9/29/99 3.10 Skimmer turned off.Settings maintained. RW-2 6.99 7.20 0.21 10/12/99 3.10 Skimmer tamed off.Settings maintained. RW-1 5.78 5.79 0.01 RW-2 5.48 6.64 1.16 1/28/00 RW-3 5.40 5.41 0.01 3.10 Skimmer tamed off.Settings maintained. 5/24/00 RW-2 7.09 9.57 2.48 3.10 Skimmer turned on. RW-3 7.35 7.40 0.05 7/5/00 RW-2 6.51 8.90 2.39 3.10 Skimmer tamed off. 7/7/00 RW-2 6.91 6.93 0.02 6.00 8/22/00 RW-2 8.00 8.52 0.52 6.00 Skimmer turned on. RW-3 7.80 7.85 0.05 8/25/00 RW-2 8.11 8.11 0.00 7.00 Skimmer turned off. RW-2 8.92 9.18 0.26 9/26/00 RW-3 8.30 8.33 0.03 7.00 Skimmer turned on.Absorbent sock installed in RW-3 and RW-4. RW-4 7.89 7.89 Slight Sheen 9/29/00 RW-2 8.90 8.91 0.01 1 8.00 1 Skimmer turned off 10/20/00 RW-2 9.37 9.82 0.45 8.00 1 Skimmer turned on. 10/23/00 RW-2 9.45 1 9.58 0.13 9.00 1 Skimmer turned off. Table B 111005 Page 1 of 11