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3.4 2 5 7 Water Supply Study identify the. -extension of water main in Scheuneman Road, north of State Highway 61 asa potential route formunicipal water service to the northeast portion of the City. The proposed improvements will be designed with this future extension urider .State Highway 61 in mind. Storm Sewer/Drainage The existing c.enterline culvert near the mid -point of Scheuneman Road will be replaced as part of these improvements. The new culvert will be. Reinforced. Concrete (RCP) and will have aprons and riprap on eac.h end.. The existing ditches thsat currently collect and transport drainage to this low point will be replaced with a new storm sewer system. The new system will be sized to handle. a 10-year drainage event, The new..storm sewer system will consist of catch basins to collect the runoff and RCP pipe to convey the`runoff to the low point. At the low point it it recommended to install a treatment basin on the west side of Scheuneman Road to.retain and treat the surface. runoff before it goes west, ultimately towards Gem take. The proposed treatment basin will likely require a permanent easement besecured. from the adjacent parcels). See Figure 3 for the:proposed storm sewer improvements. Other Utilities The proposed improvements will be coordinated with private utility companies so that future. disruptions to the newly constructed street could be avoided. Right -of -Way and Easements The construction limits of this project are anticipated to fall within the existing right-of-way of the project road with the exception of the two small proposed easementareas along County Road. E, as shown on Figure 3. To provide sufficient room for a. storm water treatment area, it is recommended. to provide easements as shown on Figure S. Easement costs are not included onf the project costs. Permits and Approvals The following permits and approvals will need to. be obtained for this project: Minnesota Department of Health (water main extension). ■ Minnesota Pollution Control Agency (sanitary sewer extension). Minnesota Pollution. Control Agency (turf disturbance if greater than 1 acre) — NPDES. Minnesota Department of Transportation. (work in right-of-way). Estimated Coss The total estimated project cost of the improvements. outlined in broken out by project. piece and summarized below: Street Improvements $617,240 Sanitary Sewer. Improvements $69;550 Water Main improvements $163,280 Total $850,070 FEASIBILITY STUDY G! &K:143869 Page'3