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Feasibility Report <br />2024 / 2025 Street Reconstruction and Municipal Sewer and Water Extension Project Pine Haven City of Lino Lakes, MN WSB Project No. 023620-000 Page 4 between 60 to 272 feet deep. Wells were installed at the time these houses were built. Wells have an average life span of 50 years. 4. Proposed Improvements4.1 StreetsThe City will reconstruct 81st Street and Elbe Street back to their existing width of 30 feet wide (front of curb to front of curb) and install concrete curb and gutter. Danube will be reconstructed to 28 feet wide <br />(back of curb to back of curb). Due the nature of the existing rolled bituminous curb, the new concrete <br />curb and gutter will change the perception of the road width. The road section will consist of 4 ½ inches of <br />bituminous on top of 8 inches of class 5 aggregate base. The subgrade will be evaluated through the <br />design process. The City may incorporate reclamation into the project. Surmountable curb and gutter is <br />proposed for the entire Pine Haven neighborhood, and will be lowered at the driveways. A proposed <br />typical section can be found in Appendix A. <br />The City has had discussions with Anoka County and the property owner of 8174 Lake Drive regarding <br />the possible re-alignment of 81st Street and Diane Street to be one intersection. The City will continue to evaluate this option. 4.2 Drainage The City has completed a preliminary stormwater management design that will replace and expand the existing drainage systems. The design is in conformance with the City’s Stormwater Management <br />Ordinance and Rice Creek Watershed District (RCWD) Rules. The area planned for a new stormwater <br />management facility is within the 81st Street right of way as it extends undeveloped to the east. There is a second area planned for a stormwater management facility, east of property address 8010 Elbe Street. <br />The City has been coordinating this option with the property owner to consider a drainage and utility <br />easement. <br />The preliminary storm sewer design is proposed to consist of typically 12 inch to 15 inch diameter <br />Reinforced Concrete Pipe (RCP). At the time of this report, the storm system is planned to convey water <br />to the pond on the easterly end of 81st Street as well as to the east of property address 8010 Elbe Street, both of which will outlet to the easterly wetland. The preliminary storm pipe locations and pond outline <br />can be seen in Appendix A . The City will be required to obtain a permit from Rice Creek Watershed <br />District and the Minnesota Pollution Control Agency (MPCA). 4.3 Utilities 4.3.1 Sanitary Sewer An 15-inch diameter PVC sanitary sewer will be extended northeast along Lake Drive and east along 81st Street. The sanitary sewer along Lake Drive and 81st Street is trunk sanitary sewer and will serve additional properties in the future. The installation of the sewer line along Lake <br />Drive may require the reconstruction of the shoulder. This will continue to be coordinated with <br />Anoka County, cost for this has not been included at this time. <br />An 8-inch diameter PVC sanitary sewer will be extended south along Danube Street and Elbe <br />Street to serve the Pine Haven neighborhood, as shown in Appendix A . Four-inch diameter PVC <br />services would be extended from the 8-inch PVC mainline sewer to the property lines. <br />349