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• At each ORC injection location, a 1-inch rod will be advanced to a depth of 10 feet below the top of the capillary zone, following standard Geoprobe procedures 0 An appropriate quantity of ORC slurry will be mixed for each location ' and a high pressure slurry pump will be connected to the 1-inch rod using a hose t • While slowly withdrawing the rod from the borehole, a predetermined amount of slurry will be pumped into the aquifer l • As each 4-foot section of the drive rod is removed from the borehole it will be disconnected The hose will then be reconnected to the rod and the previous bullet will be repeated This procedure will be repeated until the top of the capillary fringe/smear zone is reached • Once the top of the capillary fringe/smear zone is reached, a bentonite seal will be slurried to the top of the borehole The ground surface will then be restored to its original condition • The drive rods will be decontaminated and the rig will be moved to the next injection location 53 GROLIND WATER MONITORING ' Following the injection of ORC, ERM will perform ground water sampling to monitor hydrocarbon constituents in ground water at each former UST site Ground water samples will be collected in monitoring wells MW-1 through MW-6 at the site Consistent with the results of previous sampling, ground water samples will be analyzed for TPH-g and BTEX Ground water sampling will be performed according to the following schedule • 1 month after ORC injection, and 0 Every 2 months thereafter, up to 9 months following ORC injection ' Depending on the results of the ground water sampling events, the sampling frequency may be modified as appropriate ' If the sampling results indicate that the concentrations of TPH-g and BTEX are decreasing or show stabilization, Heinz will submit a request for ' 1 ' 16