The Tri-Park Cooperative Housing Corporation forms the largest mobile home entity in Vermont and serves a significant role in affordable housing. Located at the confluence of Whetstone Brook and two other waterways, homes within the cooperative were damaged or removed as a result of flooding in 2005 and 2011. D&K developed a flood hazard mitigation…
The City of Providence undergoes chronic and damaging flooding in the urban center. D&K is developing a Watershed Plan Environmental Assessment document to identify flood mitigation strategies along the Woonasquatucket River. The plan considers the potential impacts of alternatives on environmental and social resources. Alternatives include lowering the grade of some floodplain areas to allow…
To manage the development of ancillary highway and safety projects in scoping, design, and construction phases, the Vermont Agency of Transportation engages on-call consultants to provide engineering evaluation, design, permitting, and appurtenant professional services. D&K provides services under a statewide contract developing projects that enhance traffic control and signing, intersections, slopes, rail crossings, park-and-rides, rest…
Three small municipalities had to find a solution to maintain Lake Fairlee, a regional recreational resource with numerous lakefront properties that make up a substantial component of these towns’ grand lists. The logistics and politics of rehabilitating the Lake Fairlee Dam were complex: the dam is privately owned, and the dam’s concrete auxiliary spillway, which…
The North Attleboro National Fish Hatchery is a pond complex consisting of large rearing ponds supplied and drained by a network of water pipes and valves, which are equipped with concrete water control structures (called kettles) that control the pond water levels, manage the water between ponds, and drain the ponds. The USFWS required selective…
Sucker Brook was a deeply incised stream channel that threatened nearby infrastructure and sent an estimated one ton of phosphorus per year downstream toward Lake Champlain. The project goals included a reduction of sediment loading and erosion and the restoration of aquatic and riparian habitat while minimizing construction and maintenance costs. D&K prepared conceptual and…
Built into a hillside, Gardiner’s historic district, bounded by the Cobbosseecontee Stream and the Kennebec River, is garnering new interest and investment after mills and other large institutions closed. D&K developed a ten-year downtown master plan that improves resilience against coastal and inland flooding, economic sustainability, stormwater capacity and pollution control, and multimodal accessibility. Through…
The New Hampshire Department of Environmental Services identified the 1861 concrete and masonry Union Village Dam as high-hazard and deficient in a number of areas. The owners’ preferred option was to remove the dam to reduce potential hazards and remove a hydraulic and aquatic organism passage barrier from the river, restoring the river to a…
The goal of this project was the removal of Stone Pond Dam and associated structures, the restoration of Scott Brook to a free-flowing condition, and the removal of an unnatural barrier to aquatic organism passage (AOP). D&K developed a study and provided a removal design that considered H&H, sediment transfer, and soils and identified alternatives…