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Square Feet of Slurry Wall/Linear Foot Total Linear Feet of Slurry Wall Phase I 70.1 7,726 Phase II 82.5 4,643 6.4.6 EXHIBIT F -Reclamation Plan Mau 3. All of the maps have now been signed per Rule 6.2.1(b). The drawings also now more clearly identify the 201-acre permit boundary and the slurry wall trench location. The legend has been updated to assist with identifying these items. 6.4.7 EXHIBIT G -Water Information 4. Per Rule 6.4.7 (3)&(4), an estimate of the project water requirements and the projected amount from each sources of water supply to the project, has been added to Exhibit G. 5. Bishop Brogden Associates, Inc. reports that the TSSP was filed with the OSE on February 8, 2007. No exposure of groundwater at the site or use of water requiring an approved TSSP will occur prior to OSE approval. Additionally, the Green/Croissant Site SWSP approved on January 22, 2007 provides for dust control water at the Bokelman/Walters Pit. 6. The Reclamation Plan map shows the proposed west and east drainage swales to be constructed at reclamation for routing major storm events around the reservoirs. Calculations for the excavation volumes for these channels and installation costs have been added to the revised reclamation costs included with this submittal. These are primarily grass-lined channels and the revegetation areas for the channels are wrapped into the total reclamation revegetation areas for each phase. 7. Riprap Drain Outlet Protection Details have been added to Exhibit F -Reclamation Plan Map. Outlet protegtion is provided for the perimeter drain outlets into the drainage swales and to the Phase I -Cell 4 lake. 8. a) The predicted elevation change in groundwater levels due to mounding in the absence of drain installation is a maximum of 9 ft along the south boundary of Phase I, 3.5 ft at the Johnstown Waste Water Treatment Plant and 5-6 ft along the south boundary of Phase II. It should be noted that the water table is confined along the south boundary of Phase I and that the physical water table elevation would remain unchanged from historic, however the pressure heads would increase in response to the dam effect of the slurry wall. b) The drain performance was evaluated under two hydrologic scenarios, 1) local storm rainfall events and 2) Big Thompson River flood conditions. For local storm rainfall events; Phase I West Drain Outlet -discharges into the Cell 4 lake. The outlet is not Y~i/ _ ~ / W~il~nd. Inc. 2 of a Environmentel & Engineering