D&K provides civil, structural, mechanical, water resource, dam, environmental, and geotechnical engineering and permitting assistance to support maintenance and upgrades to a Northeast-focused hydroelectric utility. Project types include penstock inspections, power generation and project redevelopment studies, new fish passage systems, fish passage system maintenance, FERC licensing support services, permitting assistance, survey, substation and lattice structure…
Green Mountain Power (GMP) is a private electrical utility provider that maintains much of Vermont’s electrical distribution and hydroelectric power-generating infrastructure, solar farms, and natural gas cogeneration facilities. As GMP has grown through expansions and small utility provider acquisitions over the past 20 years, D&K has supported approximately 200 projects, and we continue to provide…
This fast-track project included collecting the location (within 0.06 ft) of approximately 1,535 water gate valve locations for the city’s GIS database and future projects. Working closely with the city and in coordination with ongoing roadway construction activities, D&K staff collected water gate valve locations using survey-grade GPS units tied into the Vermont CORS network….
Robin Hood Park has been part of the fabric of the landscape for more than 100 years, but lacks a single, unifying aesthetic or clarity of placement. A 2019 study identified several pool deficiencies; the playground does not have an ADA-accessible route; and the tennis courts are in poor condition with broken lights and fencing…
Patriot Hydro sought the operational and maintenance benefits of converting water-level controls from timber flashboards to a remotely operated inflatable bladder system at a 12.4-MW hydroelectric project. An unusual amount of woody debris had accumulated in the facility’s intake channel. D&K evaluated the dam and hydrologic and hydraulic conditions to determine the feasibility of installing…
To understand existing conditions and evaluate opportunities to upgrade the facility, D&K supported Patriot Hydro by providing an evaluation and designing upgrades of the 1.6MW Hooksett Hydroelectric Project. The team assessed existing conditions, including civil-structural, equipment, hydrologic and hydraulic, and natural resources. D&K also completed an electrical generation study that identified ways to optimize the…
The Town of Chester needed to address hydraulic capacity and condition issues associated with a 165-ft-long by 15.5-ft-high earthen dam with a concrete spillway impounding a small recreation pond. The site was constrained and funding for the project was limited. As Town Engineer, D&K evaluated the dam, watershed, and natural resources, developed alternatives, and provided…
The Town of Swanzey needed to improve the stability and safety of an earthen dam serving an 80-acre pond. The pond supports recreation and enhances the value of the homes located along its shoreline. The dam had seepage issues and did not meet current dam safety standards. Using articulated concrete blocks as overtopping protection, DuBois…
To comply with Federal Energy Regulatory Commission (FERC) regulations and gain a better understanding of the condition of this asset, Eagle Creek Hydro engaged D&K to inspect this concrete box penstock located on the Winnipesaukee River. Where feasible, D&K’s structural and hydroelectric engineering staff performed a visual observation, rebound hammer measurements, and soundings of the…