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There is one wetland in the southwest corner of the site, north of 221st Avenue. One hundred-forty feet of buffer will be maintained between this wetland and excavation • activities. TRAFFIC The attached permit limits Tiller to using US Trunk Highways 169 and 10 through Elk River, via 221st Avenue, which is paved. Highway 169 has acceleration lanes and protected turn lanes in both directions at its intersection with 221St Avenue. LAND SWAP Tiller is proposing to swap property with C.S. McCrossan Construction, Inc.. Tiller will give C.S. McCrossan property to the north of their current parcel, giving them access to 221st Avenue. McCrossan's will give Tiller property adjacent to the west boundary of their land lying south of 221St Avenue. Figure 2 and also the three maps in the attached application show the locations of the parcels being traded. Although the Tiller's property being traded is currently permitted for mineral excavation, C.S. McCrossan will need their own permit in the future to mine in this location. The property being given to Tiller from C.S. McCrossan is included in Tiller's amended permit. Additionally, Tiller's amended application includes a portion of property McCrossan is retaining ownership of. Tiller will mine this property and McCrossan will mine a portion of Tillers in the future. This arrangement is to make logical boundaries between these • properties, stopping the mining in a valley versus the top of a ridge. It may be many years between Tiller's mining and McCrossan's. The contour lines on the maps included in the application show this mining outside of the property boundaries. Mcrossan will be required to enter into Tillers conditional use permit as a consenting property owner. GROUND WATER Tiller is proposing to remain a minimum of five feet above water table with mining activities and the hot-mix plant. To mine closer to or into the water table raises additional concerns and requires an amendment to this permit. Washing of gravel has been purposely omitted from Tiller's site due to concerns that appropriating large amounts of water would cause contamination at the Elk River Landfill to migrate laterally faster. Other stipulations related to ground water can be found in the attached conditional use permit. HOURS OF OPERATION Tiller is requesting to the normal hours of operation for mineral excavation, which are 7:00 a.m. to 7:00 p.m., Monday through Saturday. They are asking that exceptions be made for the hot-mix asphalt plant when a paving job requires it. An example is State Highways, which are paved at night to avoid heavy traffic times. SETBACKS Tiller is proposing fifty foot setbacks adjacent to 221st Avenue and US Trunk Highway 169 and a two hundred foot buffer adjacent to the City's Railroad Hiking Trail. No • setback is proposed between Tiller's operation and the McCrossan property (which was