The State of Maine identified the Machias Valley Airport as the second highest priority airport to connect remote regions of the state with critical medical services. The existing runway is only 2,880 feet long, which is insufficient for LifeFlight of Maine’s King-Air 200 air ambulance. D&K recently completed a Master Plan update and conducted a…
Parlin Field is a general aviation airport that has historically relied on maintaining financial self-sufficiency through revenue generated from airport leases, aviation fuel sales, aircraft storage fees, volunteerism, and grants from the New Hampshire Bureau of Aeronautics. The town recently applied with the FAA to become an obligated NPIAS airport and accept federal funds, which…
The New Hampshire Army National Guard (NHARNG) prepared the New Hampshire National Guard Training Site (NHNGTS) Site Development Plan to analyze how best to meet training objectives. Preparation of an Environmental Assessment (EA) was necessary to satisfy NEPA requirements for implementing the Site Development Plan. D&K performed the EA, assessing the individual and cumulative effects…
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…
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…
The Cross Brothers Dam was no longer used for a long-defunct mill, and the impoundment had silted into the dam’s crest. The dam, built in 1924 and classified as a Low-Hazard dam by the State of Vermont, was a complete obstruction to aquatic organism passage with the potential to further damage water quality. D&K provided…
Otter View Park is an ADA-accessible public park that consists of a series of trails located on 17 acres next to the Otter Creek. The park provides pedestrian access through a variety of natural settings, such as upland meadow, cattail marsh, wetland shrubs, and floodplain forest. D&K designed the park and pathways; performed topographic and…
An aging concrete and masonry dam was deemed structurally deficient by state regulators, and the owners could not justify the expense of reconstruction. D&K connected the owners with the NRCS to fund the construction, which included the removal and disposal of the dam and active restoration of the stream channel. Our team designed the removal…