A. Trunk Facilities: Where a larger size water main, sanitary sewer, storm drain or similar facility is required to serve areas outside the subdivision, the larger facility required must be constructed. Additional cost is to be borne by the benefiting properties, and the assessments are to be determined by the governing body where existing trunk facilities provide the subdivision with a lateral benefit. An amount equal to the estimated current value of the lateral benefit, as determined by the City Engineer, shall be paid to the City.
B. Sewer and Water:
1. Urban Areas:
a. Sewer Lines:
(1) No public sanitary sewer facilities shall be extended which are not in conformance with the utility staging plan of the City’s comprehensive plan.
(2) Where trunk line sanitary sewer facilities are available, the subdivider shall install sanitary sewers and connect such sanitary sewers to such trunk line sewers. Extensions of the public sewer system shall be designed to provide public sewer service to each lot.
(3) All sanitary sewers shall be inspected by the City by means of television, at the subdivision expense, prior to their acceptance by the City. In the event that such facilities are not available but, in the opinion of the City Council, can be made available within a reasonable period of time, such sewers and all necessary laterals extending from the main sewer to the street curb shall be installed and capped for future connection as service becomes available.
(4) Unless otherwise required, a minimum eight-inch (8") sanitary sewer pipe shall be placed at grades approved by the engineer. Mains over eight inches (8") in size may be required, and the additional cost may be borne by the City. Service wyes shall be four inches (4"); rubber or plastic compression joints are required.
b. Water Mains:
(1) Where mains from public water system are available, the subdivider shall install water mains on the plat and connect such mains to such public water system.
(2) Extensions of the public water supply system shall, when available, be designed to provide public water service to each lot. Such extensions shall comply with the criteria, recommendations and policies of the comprehensive water system plan, if applicable, or if not, as required by the City Engineer.
(3) A minimum water main of six-inch (6") ductile iron pipe or other approved pipe shall be required. Mains eight inches (8") in size or larger may be required, and the additional cost may be borne by the community.
c. Building Services: Each applicable building service shall be run from the main to the property line where a cap or plug shall be placed until the service is extended to the structure. A one-inch (1") type K copper water service, corporation cock, curb box and stop, and four-inch (4") standard weight cast iron soil pipe sewer service shall be minimum requirements and may be placed in a common trench.
2. Rural Areas:
a. Sewage Disposal Systems:
(1) Where lots cannot be connected with a public sewerage system, provision must be made for sanitary sewerage facilities, consisting of a central treatment plant or individual disposal devices for each lot. This does not mean that the installation of individual disposal devices shall be at the expense of the subdivider.
(2) Any subdivision or lot not provided with off site sewer facilities shall be subject to soil and percolation tests to determine whether the lot size proposed will meet minimum standards of health and sanitation due to limitations of soils as shown on existing soils maps. The lot area and topography must be such that it will accommodate an adequate disposal system to serve the residence for the estimated unsewered years, as determined by the governing body. Such test shall be made at the expense of the subdivider, and a sketch map shall be submitted to identify the specific locations where tests were made. At least two (2) soil borings and two (2) percolation tests shall be performed on each proposed lot for the purpose of siting both a primary and secondary drainfield.
(3) All sewage disposal systems shall comply with the standard of WPC-40 as interpreted by State Pollution Control Agency Rules 7080 and Minnesota Rules Part 6120, the utilities element of the comprehensive plan, and any other regulations adopted by the City for their installation and maintenance. All on site system designers and installers shall be certified by the Minnesota Pollution Control Agency.
(4) In any situation where the Council approves the installation of on site disposal units, they shall be so located as to permit the easiest and least expensive connection to the sewer when it becomes available and usable. Where such on site units are installed, the builder shall provide underground plumbing ten feet (10') beyond the footing and plugged. The area around the stack shall be so scored that the septic tank line can be disconnected and connection made with the public sanitary sewer system.
(5) When an individual sewage system is used and the septic tank is placed on a side other than that from which the public sewer line would connect, a capped sewage disposal line shall be extended from the point of ground entrance of the basement or house to a point ten feet (10') beyond and to the side from which the future sewer connection will be made. Inside the basement, the elbow shall be set up to be easily reversed for connection to the capped line.
b. Water; Individual Wells: An individual well shall produce at least ten (10) gallons per minute, have a well casing at least four inches (4") in diameter and be grouted to provide a safe, potable water supply.
C. Storm Water Drainage: A drainage system design shall be required that conforms to the city’s surface water plan, and may include a storm sewer system or a system of open ditches, culverts, pipes, catchbasins and ponding areas, or both systems. Such facilities and easements shall be installed as will adequately provide for the drainage of surface water; drainageway easements or land dedication may be required when such easements or land is needed in the public interest for purposes of floodplain management, proper drainage, prevention of erosion, pedestrian access to water bodies or other public purpose. If there is a watershed district, that board must approve all surface water drainage. All such systems shall conform to all City drainage plans and to the City’s comprehensive plan.
D. Easements:
1. Easements at least ten feet (10') wide, centered on rear and other lot lines as required, shall be provided for utilities where necessary. Where underground utilities are being installed, a front or side yard easement may be required. These easements shall be shown on the plat.
2. Easements shall be provided along each side of the centerline of any watercourse or drainage channel, whether or not shown on the comprehensive plan, to a width sufficient to allow for maintenance of storm sewers.
3. Utility and drainage easements shall be dedicated for the required use.
E. Utility Location:
1. When practicable and feasible, all utilities shall be placed underground. All underground work shall be completed prior to street surfacing. All utility lines for telephone and electrical service shall be placed in rear line easements when carried on overhead poles.
2. Unless otherwise approved by the City Engineer and the Public Works Director, all utilities shall be constructed out from the curb line a distance of no more than eight feet (8').
F. Street Lighting: All subdivisions shall contain street lighting if a new public street is constructed in a manner that conforms to City policy.