Agenda - Council - 02/08/2022 - Laserfiche WebLink

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Bruce Westby, P.E. October 21, 2021 Page 2 extend along the future Riverdale Drive alignment to the extent possible, with adequate depth being the limiting factor. The remainder of Riverdale Drive sanitary sewer main will be installed to Bowers Drive and will connect to the sewer main in the Riverstone South Addition. Storm Water Improvements — The below -ground storm water improvements will be installed to complete the utility portion of the improvements. The design will meet State -Aid drainage calculation requirements. The design will be based upon storm water ponding sites currently being coordinated with developers of the adjacent sites. The storm water ponds will be constructed as a portion of the Riverdale Drive roadway improvements. A summary of the design alternate is presented below: • Trunk Watermain Loop— The proposed watermain loop improvements are also derived from the 2040 Comprehensive Plan. connecting the Riverdale Drive trunk watermain to the Bunker Lake Boulevard trunk watermain. The work consists of directionally drilling and jacking underneath TH 10 and the Burlington Northern (BN) Railway. A figure is attached that generally depicts the lift station and trunk utility improvement locations. WORK PLAN & ASSUMPTIONS Our Work Plan includes all services required to deliver the project and is based on the best information available and accounts for minor scope revisions as the project moves forward. Our services are anticipated to include: Task 1: Project Management, Meetings and Procedural Agency Coordination Meetings (2 Meetings) Meetings are anticipated as described below: City of Ramsey (Two Meetings) Two meetings are anticipated with City of Ramsey staff. These meetings will discuss findings, issues, needs, and schedule to keep the project progressing. Lower Rum River Watershed Management Organization (Telephone and Email Communications) We will communicate with representatives of the Lower Rum River Watershed Management Organization to discuss the project scope and determine permitting requirements. Developer / Developer's Engineer We will coordinate as needed to allow for seamless integration of the lift station and forcemain with proposed improvements by the developer. We will keep the City appraised of all communications with the developer. Task 2: Data Collection, Analysis and Review Topographical Survey The topographic survey includes the proposed corridor from Llama Street to Bowers Drive. We have also assumed that a survey of a potential ponding area will be required, along with survey of the TH 10 median(s), right turn lane(s) in anticipation of the of the Riverdale Drive Roadway Improvements. We have assumed both existing ground data, along with proposed grading information will be provided to us Bolton & Menk is an equal opportunity employer.