4.10 SR 02-07-2022 - Laserfiche WebLink

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Project Approach Proposed conceptual level improvement alternatives will be developed and analyzed to provide conceptual level recommendations for future water and municipal sewer improvements based on land use and growth projections. WSB will study and evaluate municipal sewer and water improvements to serve the northeast area of the city which encompasses approximately 2,000 additional acres. We will use the City's existing water distribution system model to model and determine the trunk watermain sizes and routes that are needed to serve this proposed development area. The development of a new water distribution system model is not included in this proposal but can be provided for additional fees if requested. Based on information received from the City, it us our understanding that a trunk sanitary sewer interceptor line will be routed from the Northeast Elk River Urban Services Expansion Area to the City's wastewater treatment plant without entering the City's existing municipal sewer collection system. Therefore, no sanitary sewer modeling of the City's existing municipal sewer system is included in this proposal other than performing hydraulic calculations to determine the size of the proposed trunk sanitary lines within the development and the downstream sewer interceptor line that is routed to the wastewater treatment plant. Both gravity trunk sewer main and lift station alternatives will be developed for the municipal sewer system analysis. THE PROPOSED SCOPE OF SERVICES INCLUDES THE FOLLOWING SERVICES: 1. Provide project management and coordination water and sewer improvement alternatives. with City Staff. 2. Attend one (1) kick-off meeting with City Staff to review the existing municipal water and sewer systems, planned development, future zoning classifications, future growth projections, and proposed alternatives to be evaluated. 3. Provide full analysis of existing municipal sewer and water systems in the northeast area and existing system routing to the wastewater treatment plant, existing wells, and storage tanks. A spreadsheet will be used to sum -up the projected wastewater flows and size the future trunk sewer lines. A capacity analysis of the water system will be performed to assess the need for future wells/storage tanks to serve the proposed urban service area. The City's existing water distribution system model will be used to determine and size the trunk watermains needed to serve the proposed development with potable water from the City's existing water distribution system. 4. Prepare conceptual level Opinion of Probable Construction Costs for proposed municipal 5. Include a financial impact analysis and provide recommendations for funding. This analysis will include attending meetings, data gathering and analysis, reviewing and verifying programmed improvements, analyzing prior methodologies and existing connection fees, and developing potential new assessment amounts for the proposed development. Additional financial analysis services can be provided if requested as identified in the Consultant Cost section. 6. Prepare a draft report, including preliminary design layout(s) (GIS map figures) of the proposed water and sanitary sewer improvement alternatives, flow capacity and associated development acreage for each alternative, and conceptual level construction costs for each alternative. If these recommendations include trunk area assessments (or any private property assessments) the report will be prepared in a way to meet the requirements of Minnesota Statute 429 and be signed by a licensed engineer in the state of Minnesota. 7. Attend one (1) project summary meeting with City Staff to discuss the draft report. Proposal for Urban Expansion Services Expansion Study for Elk River Project Approach 4