11-19-2018 Planning Commission Packet

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CMP Part 4B. Sanitary Sewer Plan INTRODUCTION The City of Orono is required to prepare a Community Management Plan that aligns with the Metropolitan Council's Metropolitan System Plan every ten years per Minnesota Rule 473.858. An important part of the Community Management Plan is the Sanitary Sewer Plan,which describes the existing sanitary sewer system and outlines the timing and sequence of future improvements. The Sanitary Sewer Plan allows the City and Metropolitan Council to build and improve their sanitary sewer collection and treatment systems so that development can occur in the most efficient and cost-effective manner. This document serves as the sanitary sewer component for the City of Orono's 2040 Community Management Plan. The City of Orono's Sanitary Sewer Plan was developed to meet the requirements of the Metropolitan Council's Thrive MSP 2040 Water Resources Policy Plan. The Thrive MSP 2040 Plan was approved in May 2015 and outlines regional goals for the wastewater system, including environmental sustainability, water reuse, and water conservation. Additionally, the Thrive MSP 2040 Plan includes population, household, and employment projections, and projected wastewater flows. As a result of projected population increases and land use changes in Orono, the Metropolitan Council estimates that sanitary sewer flows will increase approximately 20%between 2010 and 2040. This Sanitary Sewer Plan serves as a guiding document for City infrastructure improvements and expansion. It also outlines the locations in which the Metropolitan Council Environmental Services (MCES) can expect to see increased wastewater flows, allowing the Council to determine if capacity upgrades will be required at regional wastewater treatment plants and interceptors. Background The City of Orono is located in western Hennepin County and is bordered by Medina to the north, Wayzata and Plymouth to the east, and Minnetrista and Independence to the West. The Cities of Long Lake and Minnetonka Beach are completely contained within Orono. The City of Orono is primarily residential and is dominated in the south by Lake Minnetonka. Approximately 34% of the City is covered by lakes and wetlands. Orono is classified by the Metropolitan Council under the Emerging Suburban Edge and Rural Residential community designations. Orono's long range land use plans call for permanent maintenance of the existing low density rural residential areas. There is to be no staged growth plan for conversion of low density residential uses to higher density residential uses,and expansion of the existing urban service area will occur only within a few specifically planned areas. Therefore,the goals,plans and programs for on-site sewage treatment in rural Orono are intended to be permanently self-sufficient. Potential future demands on regional capacity will be primarily from the retrofitting of existing rural residential neighborhoods where sewer is readily available and where residents are willing to pay the costs associated with its installation. The goals,policies and facilities plans contained in this plan are set in the context of the legislative mandate to plan for regional needs through the year 2040 and beyond. These statistics and programs are primarily applicable to the urban areas of Orono and to the municipal sanitary sewer facilities which serve or are planned to serve these areas. City of Orono Community Management Plan 2020-2040 Part 4B, Page 2