Orwell’s wastewater treatment facility includes an aerated lagoon facility that provides secondary treatment and chlorine disinfection of wastewater. The facility’s aging lagoon aeration system was a submerged lateral system that had become inadequate and inefficient. D&K provided design, bid, construction management, and startup assistance services to upgrade the lagoon aeration system to meet current standards….
The 40-year-old Northfield Wastewater Treatment Facility (WWTF) required a comprehensive upgrade of the facility and process conversion from Trickling Filter (TF) to Sequencing Batch Reactor (SBR) to comply with stringent phosphorous limitations. The site was constrained by the railroad and the Dog River, requiring geotechnical measures to protect rails. D&K conducted all professional engineering services…
During the surge of Tropical Storm Irene, flows at the town’s wastewater treatment facility decreased by 60%. It was determined that a double-barrel sewer siphon, consisting of an inlet and outlet structure, was destroyed by the storm when the Third Branch of the White River migrated 90 feet to the northeast. D&K provided design and…
The Las Cruces International Airport (LRU) required a Master Plan to tie the airport’s use to the Las Cruces Innovation and Industrial Park and Spaceport America. In developing the Plan, D&K held multiple meetings with airport users, local businesses, and commercial space operators. LRU’s needs included the addition of a hotel, special-use space launch areas,…
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…
Under a multi-year contract and an expedited schedule, DuBois & King provided guidance on planning, technical, environmental, and regulatory issues. Projects under this contract included a Capital Improvement Plan update, technical master plan update, runway extension, hangar area development, terminal apron expansion, Environmental Assessment, construction of a full parallel taxiway, snow removal equipment acquisition, a…
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 Glencliff Home is an off-the-grid assisted living facility whose primary purpose is to provide adults with mental health care. The campus includes residential, care, office, and maintenance spaces and uses a combination of renewable energy systems, including a hydroelectric facility, as well as fossil fuels to supply power and heat. For many years, D&K…