10.01 - Wildlife Tr/N Sleutter Rd Prem Assessment

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need to be done. However, as mentioned previously, it appears from field observation of the existing roadway that the roadbed materials are appropriate for roadway construction. At this point, we believe the roadbed could be used as is. The City Standards require ditches and culverts to provide adequate roadbed drainage. For Wildlife Trail, as indicated above, since we are only removing those trees and clearing brush necessary for the roadbed and pavement construction, we will not be constructing roadside ditches. We are recommending though, that bituminous gutters be constructed alongside the edge of pavement uphill on both sides of the two sags in an attempt to control runoff and protect the edges of the pavement. Without roadside ditches, while we do have some advantage with the generally well drained soils around here, there is the risk of developing soft pavement edges when you do not get water or snow melt off of and below the roadbed and pavement. The City Standards speak to the coordination between and the use of safe horizontal alignments and vertical profiles for the roadway. The existing roadway appears to follow the existing terrain. We have not done any calculations as to make any significant changes could be an expensive proposition. No one has told us about any safety concerns, and from field drive - throughs, it appears the horizontal and vertical alignments are suitable for this dead -end roadway that serves a relatively small number of lots (i.e. traffic volume should be minimal and speeds relatively low). The City Standards call for a minimum of 4 inches of Class 5 aggregate base and 2 inches of bituminous surfacing. We did not do any field measurements of existing Class 5 aggregate base / surfacing. We could do this should the City Council wish to prepare plans and specifications for public bidding of these improvements. For the purposes of this study, we have used an approximate 2 -inch thick "sweetening" of Class 5 aggregate base. In coordination with above roadbed widths, we are recommending 18 -feet wide pavement for the segment from North Sluetter Road to the loop. For the loop, we are recommending 16 -feet wide pavement. The final poton of the City Standards calls for addressing erosion and establishing vegetation. While there are many erosion control requirements, which do cost money, we are not anticipating a lot of topsoil or seed as we are trying to minimize disturbance and going great distances away from the existing roadbed. Pequot Lakes — Wildlife Trail Improvements Study WSN No. 013080044.000 Page 7