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

The Vermont Agency of Natural Resources (ANR), Department of Environmental Conservation (DEC), Dam Safety Program (DSP) is seeking proposals from qualified dam safety engineering consultants experienced with subsurface explorations in earth embankment dams (soil borings, rock cores), geotechnical evaluations (seepage and stability analysis), risk assessment, hydraulic and geologic evaluations (rock erodibility), preparing and carrying out Drilling Invasive Program Plans (DIPP) in accordance with US Army Corps of Engineers (USACE) Engineer Regulation (ER) 1110-1-1807 - DRILLING IN EARTH EMBANKMENT DAMS AND LEVEEES, and obtaining various regulatory approvals and permits to perform the subsurface exploration work. The subject of the project is the Wrightsville Dam located in Montpelier and Middlesex, Vermont. The Dam is a 1,525 foot long, 115-foot-tall earth embankment dam with a principal spillway, hydropower intake/outlet, and auxiliary spillway. The Dam was constructed by the USACE in 1935 for flood protection following the 1927 Flood and then transferred to the State of Vermont which owns, maintains, and operates it to this day through the DSP. The proposed evaluation is being performed in response to a series of Potential Failure Modes (PFMs) that were considered during a recent Screening Level Risk Analysis (SLRA) performed for the DSP in 2023. The SLRA identified a series of data gaps that need to be addressed to better understand the PFMs and inform potential future actions. Existing subsurface information of the embankment and foundation conditions as well as of the bedrock comprising the auxiliary spillway is limited. The following PFMs which include Internal Erosion Through Embankment, Erosion of Auxiliary Spillway Channel Leading to Failure of Right Abutment Wall, Internal Erosion Along Outlet Tunnel, and Slope Instability Resulting in Deformations Greater than Freeboard, could all benefit from data collected and analyses performed as part of this project. The project has a budget of approximately $500,000 and is funded through State Capital Funds. The State of Vermont reserves the right to reject all proposals or eliminate one or more Tasks as deemed necessary. Higher cost proposals will be accepted and evaluated. All or a portion of the scope of work may be awarded, or the scope may be divided over current and future funding cycles. The scope of work has been divided into four general phases. _ Phase 1: Project planning, development of the Drilling and Invasive Program Plan (DIPP) for the subsurface explorations, and obtaining regulatory approval to perform the work. _ Phase 2: Field performance of the subsurface exploration program in compliance with the approved DIPP and any applicable approvals or permits. _ Phase 3: Performance of engineering evaluations and update to the risk assessment using the data collected from the subsurface explorations and evaluations. _ Phase 4: Use any remaining funds to take next steps to address findings of the previous phases. The intent of the project is to maximize the effective use of the available budget to cover all phases of work. The detailed scope of the Phase 2 work (number, depth, and location of soil borings/rock cores and related instrumentation) is intentionally not defined in order to allow the RFP respondent to optimize the use of the funds. The RFP respondent should review what is requested in Phase 1 and Phase 3 of the work and use this information to develop a proposed placeholder budget for the Phase 2 work. The actual scope of Phase 2 will need to be fully established as part of the project during development of the DIPP and after receiving regulatory input during Phase 1. Remaining funds may be used to take next steps in Phase 4 as determined appropriate by the DSP. Existing documentation and files for Wrightsville Dam can be made available electronically to bidders