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around the fracture to collect any generated liquids for analysis and offsite disposal: <br />Conventional flaring will be used to incinerate any gaseous hydrocarbons generated. <br />Experiment Size/Scope <br />Approximately 110kW of power will be applied to an ElectrofracTM heater for several months. <br />The scope of the test is described below. <br />• Temperature: The maximum temperature reached on the fracture plane will likely be <br />approximately 1200 °F. <br />• Pyrolyzed rock volume: The experiment will likely pyrolyze 10,000 cubic feet or <br />approximately 600 tons of rock. <br />• Oil produced: The experiment will produce approximately 400 barrels of oil. <br />• Gas produced: The experiment will produce about 2 million standard cubic feet of <br />hydrocarbon gas. <br />Fluid Production Wells <br />ExxonMobil will install production wells in the Mahogany zone surrounding the ElectrofracTM <br />heater and pyrolized rock volume. ExxonMobil will operate the production wells under a slight <br />vacuum to draw any generated fluids into the wells and to prevent any potential migration to <br />groundwater. <br />GROUND AND SURFACE WATER MONITORING <br />ExxonMobil initiated a ground and surface water monitoring program in June 2007 in <br />preparation for the ElectrofracTM Construction Test that was performed under TR-11. The <br />monitoring program is focused on the Mahogany zone in and around the Mine Bench site. <br />Sampling points are shown in Figure 5. On a monthly basis, water levels and analytical samples <br />are taken from monitoring wells WW-11, WW-EF-01, TH-A6, and MW-12. As indicated by the <br />water table contours in Figure 5 this provides one up-gradient and three down-gradient ground <br />water sampling locations. Surface water samples are taken and flow rates are estimated monthly <br />at the location water exits the mine entrance and from'the East Middle Fork of Parachute Creek <br />at the furthermost downstream point on the Colony property when surface flow is present. Due <br />to the system of retention ponds along the East Middle Fork, generally no surface stream flow <br />leaves the Colony property. Monitoring results demonstrate that the ElectrofracTM Construction <br />Test conducted in 2007-2009 had no adverse impact to either surface or ground water at the site. <br />8 <br />#1445022 v1 den