This is a service / maintenance or supply contract in Cabot, Vermont. Contact the soliciting agency for additional information.

the scope of this project will involve a close working relationship and good communication with The Cabot Flood Resiliency Task Force and the public. Deliverables are underlined. 1.0 Project Initiation and Data Collection 1.1 Participate in a project team meeting to review existing conditions, previous flood and erosion damage and project goals. During this meeting project roles will be discussed, and schedule and plans for project outreach will be determined. Past flood data will be provided by the Task Force to assist with model validation. Participate in a public meeting of the Task Force to inform community members of flood mitigation and resiliency efforts. 1.2 Conduct a stream channel walk of both tributaries to understand the upstream channels and watersheds. This will include an evaluation of upstream debris and identification of possible floodplain restoration and debris filter locations. These data are intended for use in evaluating the modeling and development of alternatives. Collect supplemental data to support hydrologic and hydraulic modeling. This includes measuring stream channel longitudinal profile and performing approximate field survey of up to 5 key wet channel cross sections to improve detail in the model. The survey will be completed by a licensed surveyor to collect high-precision survey data of the structures, adjacent stream channel, and nearby village infrastructure. 1.3 Prepare a GIS project map with collected field data from the stream walks and survey data around the culvert and bridge. 2.0 Hydrology Calculations and Hydraulic Modeling 2.1 Build hydrologic models of both tributaries' watersheds to estimate flood flows at each structure. Validate flow estimates of flood events with reported flood levels and damages. 2.2 Conduct hydraulic modeling of the existing conditions for each tributary. The model will extend from approximately the downstream confluence with the Winooski River to 200-feet upstream of each structure. 2-dimensional modeling will be used to allow for a detailed analysis of flow patterns through the village. The model will use survey data, approximate GPS data, and LiDAR data. 2.3 Perform model validation/calibration of both flows and flood elevations based on past flooding in the area to ensure the model generally represents existing flood patterns. It is assumed that the project team will provide past flooding information in terms of date, approximate magnitude of flood, and extent of flooding. The level of detail of the model validation will rely on the availability of past flood information. A table of estimated model accuracy will be made. 3.0 Alternatives Analysis and Reporting 3.1 Develop a list of alternatives and evaluate each with the hydraulic model. Potential alternatives include structure replacement, moving buildings, floodplain restoration, and large wood filters. 3.2 A project team meeting will then be held to discuss the modeled alternatives and choose a preferred alternative to move forward to concept design. 3.3 Draft a report detailing data collected during the stream walk, summarizing hydrologic and hydraulic modeling, and discussing alternatives analysis. 4.0 Concept Design The top two preferred alternatives will be advanced to concept design. At this point we anticipate moving design forward for structures in the village that appear to be issues for flood mitigation. 4.1 Develop a concept design for the culvert on the southern tributary that is prone to clogging. The concept design will include a title sheet, existing and proposed conditions plans, longitudinal channel profile, and at least two stream cross-sections. 4.2 Develop a concept design for the bridge on the northern tributary if deemed appropriate. Questions about the RFP should be directed to Gary Gulka, Cabot Flood Resiliency Task Force at: Telephone: 802-793-4744 E-mail: gary.gulka@gmail.com The Town of Cabot reserves the right to reject any or all proposals received, to negotiate with any qualified source, or to cancel in part or in its entirety this RFP as in the best interests of the Town of Cabot.