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Jul 182017
 

Guy Rouelle, AAAE

DuBois & King is pleased to announce that Guy Rouelle, AAAE, has joined the firm’s Airport Engineering group as Senior Airport Planner. Guy brings to DuBois & King 33 years of varied, in-depth experience working in and around airports. His expertise includes an understanding of public administration, planning, project development, contracts and grants administration, airport operations and maintenance, security, property management, easement acquisition, airport facilities, and FAA and airport regulations.

Most recently, Guy served as the Vermont Aeronautics Administrator overseeing the ten state airports. In this position, Guy was ultimately responsible for the execution and distribution of work through the state aeronautical service retainer contracts, and he provided oversight of the entire Vermont State aviation property management program, which involved more than 270 airport leases. During his tenure, Guy transformed many state airports from a condition of disrepair to fully functional, FAA-compliant, revenue-generating airports. He had the vision and trusted relationships with local, state and federal regulators, the congressional delegation and the FAA to secure discretionary funding to address 56 years of delayed repairs to Vermont airports in under 6 years.

Guy’s previous positions have included aviation education coordinator, aviation accident investigator, and chief pilot for the Vermont Agency of Transportation. He is a master flight instructor and DOD Air Traffic Control Examiner, and he served in the U.S. Army Aviation Branch and the U.S. Air Force. Guy holds multiple aeronautical ratings, including commercial pilot, multi-engine rating, certified flight instrument instructor, FAA Designated Pilot Examiner, and TERP instructor. He holds a master’s degree in Aeronautical Operations, a bachelor’s degree in Aeronautical Science and an associates degree in meteorology.

Guy’s deep expertise in all things airport combined with his passion for the aviation industry make him a strong asset to D&K’s airport engineering team. Guy lives in East Calais, Vermont, and works in the firm’s Randolph headquarters. Contact Guy at grouelle@dubois-king.com.

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Jul 122017
 

Since Tropical Storm Irene in 2011, DuBois & King engineers have assisted numerous communities to not only repair storm damaged infrastructure, but to build resiliency into infrastructure to mitigate damage from future storm events.

The culvert diverts overflows from the Neshobe River and directs the flow beneath US Route 7.

Photo on left: Energy dissipating baffles at overflow culvert outlet. Photo on right courtesy of Gourmet Provence: Storm surge flowing over outlet baffles.

Neshobe River Overflow Culvert. Brandon, Vermont had significant damage when TropicalStorm Irene caused flooding and overtopping of US Route 7, which runs through the town. A constricted section of the Neshobe River runs through the downtown including under the town offices and multiple other commercial buildings. Floodwaters damaged town offices, downtown infrastructure, roadways and US Route 7, as well as private and commercial properties. DuBois & King designed an overflow culvert to divert storm flows and prevent the Neshobe River from overtopping in the congested channel. The overflow culvert was designed to redirect up to the 500-year storm event under Route 7, and away from downtown businesses, properties, and town offices.

The Town of Brandon received a Hazard Mitigation grant of $2.55M from FEMA to fund the design and construction of the overflow culvert. Construction was completed in May and the investment has paid for itself in one storm event. On July 1, this year, heavy rains pounded the state causing numerous road closings, wash–outs, and state-wide flash flood warnings, but downtown Brandon was spared flood damage as the overflow culvert did its job.

Timing is everything: forty days after completing construction of the overflow culvert; it was tested with its first major storm event. Brandon merchants and Town officials marveled at the timing. One downtown merchant was quoted in the local paper, reflecting the sentiments of others, “I just know the business owners couldn’t be more grateful. I might have just closed, or sold the business, because I’m not sure I could have gone through a flood again.”

Gunners Brook flood mitigation in-stream collectors.

Gunners Brook Flood Mitigation.  Gunners Brook runs through a congested, constricted section of Barre, Vermont and was the site of repeated flood damage caused by woody debris jamming. DuBois & King evaluated Gunners Brook in both the Town and City of Barre and made recommendations for a flood resilient channel design standard to be used to replace the existing channel walls, to provide debris collection at locations other than bridges, for the development of a debris management plan to guide public works staff, and for property buyouts/removal of selected structures adjacent to the channel.

In-stream debris shown in collection racks from July 1st storm event.

DuBois & King worked with the City to obtain a State of Vermont Ecosystem Restoration Grant to help fund the construction of a multifaceted flood mitigation project. The project includes urban floodplain restoration and hydraulic and structural design of two in-stream debris collection racks.

During storm events, woody debris jamming was a significant cause of recurrent flooding due to the artificially narrowed stream channel, which was built up with vertical granite block walls and choked by undersized stream crossing structures. Repeated flooding caused economic damage and contributed to erosion and water quality issues in the area. The new in-stream structures allow controlled collection of woody debris and limits migration of debris downstream where additional jamming could occur. It is believed these structures are a first-of-their-kind in the United States.

One structure serves as the primary collector upstream and the second structure is designed to collect additional debris in a controlled fashion within the urban area. The recent July 1, Vermont storm event tested the constructed in-stream debris collection racks and verified that the debris collection systems mitigate flooding by capturing debris upstream before it can collect in bends and bridge openings downstream contributing to out-of-bank flooding.

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Jun 272017
 

Steve Dumas, PE, CxA, CPMP, LEED AP, DuBois & King’s Mechanical Engineering Department Manager

Steve Dumas, PE, LEED-AP, CPMP, DuBois & King’s Mechanical Engineering Department Manager, can now add Certified Commissioning Authority (CxA) behind his name. Steve is a mechanical engineer with 35 years of experience in design, project management, and construction administration services for projects ranging from conceptual design studies and facility evaluations, to complex multidisciplinary design packages for multimillion-dollar building projects. He holds a Commissioning Process Management Professional Certification (CPMP) through ASHRAE. The CPMP certification, an ANSI accredited certification program, demonstrates Steve’s capabilities to develop and manage the whole building commissioning process.

The CxA certification is ANSI-accredited and recognized by the Department of Energy’s Better Buildings program. The CxA designation recognizes building commissioning professionals who manage and implement commissioning processes in new and existing buildings. This certification builds on Steve’s experience with the overall commissioning process. Steve has been involved in all areas of the project development process: initial client needs definition, basis of design definition, design development, commissioning services, start-up, operational verification, and construction administration. Steve’s commissioning services begin in the Pre-Design phase Owner Project Requirements (OPR) development and extend through the Design, Construction, and Acceptance phases to post occupancy operational verification. The primary focus is on HVAC, controls systems, and energy efficiency, with non-HVAC systems such as emergency power, lighting controls, and fire alarm interface also covered.

Steve’s recent commissioning and retro-commissioning projects include the new Field Maintenance Building for the New Hampshire Army National Guard, a LEED building in Hooksett, NH, the new $40M, 90,000-sf NH Correctional Facility for Women in Concord, the new National Guard Readiness Center in Pembroke, NH, and the Littleton Readiness Center in Littleton, NH. Congratulations Steve!

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May 082017
 

Kellogg House, Williams College

Photo credit: Williams College

Photo credit: Williams College

Williamstown, Massachusetts. On April 21, the Northeast Sustainable Energy Association (NESEA) organized a tour of the Williams College Kellogg House as part of NESEA’s Building Energy Pro Tour Program. The Kellogg House is a 1794 building that received a deep energy retrofit and a newly constructed expansion to serve mixed uses at the College. The project was built to the stringent standards of the Living Building Challenge. The Living Building Challenge is a green building certification program and sustainable design framework that visualizes a built environment where living buildings give more than they take, creating a positive impact on the human and natural systems that interact with them.

DuBois & King electrical engineers provided power and lighting electrical design services for the renovation of the Kellogg House. The goal was for the building to attain net zero energy consumption. Lighting energy consumption was designed to be less than .3 watts per square foot while still achieving high-level lighting performance. Monitoring of ongoing energy consumption includes indoor-outdoor lighting, heating, cooling, ventilation, pumps for water supply and purification, plug loads, kitchen appliances, domestic hot water, wastewater treatment, and photovoltaic production.

The facility is operating the first licensed rainwater collection and treatment system in Massachusetts, and one of only a few non-chlorinated public water providers in the United States. Gray water is treated on site in a constructed wetland. The building is designed to produce 100% of its energy through photovoltaic arrays.

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Feb 272017
 

Winning projects entered into the annual ACEC-VT Engineering Excellence Awards competition were announced at the Engineering Excellence Awards dinner in South Burlington, Vermont on Friday, February 24. DuBois & King was recognized with two Grand Awards and one Merit Award. In the Transportation category, D&K received a Grand Award for the Ryegate Structure Replacement Design-Build project. In the Water Resources category, D&K received a Grand Award for the Lake Fairlee Rehabilitation project. The firm’s Randolph Wastewater Treatment Facility Process Conversion project received a Merit Award in the Environmental category.

Ryegate Structure Replacement Design-Build

For years, deteriorated, undersized culverts contributed to flooding of US Route 5 and jeopardized the integrity of the roadway and Washington County Railroad (WACR) embankments. Working with VTrans, the design-build team of DuBois & King and Engineers Construction, Inc., designed and constructed 32-ft-wide by 16-ft-high, cast-in-place, reinforced concrete arch structures beneath US Route 5 and the rail line to convey Manchester Brook beneath the embankments. 70-ft-deep braced excavations were required to construct the new 144-ft and 128-ft-long structures. A curved section open to daylight connected the two buried structures. The total length of the structure is 330 ft. The new structure improved hydraulic capacity by 25 times. Temporary bridges maintained rail and roadway traffic during construction.

Lake Fairlee Dam Rehabilitation

The Lake Fairlee dam has impounded the 427-acre lake for over 75 years. The low-hazard dam was found to be in a progressive state of failure for more than 40 years and the three abutting municipalities became concerned about potential loss of revenue from declining lakefront property values, should the dam fail. Complicating factors included the presence of a camp located on top of the dam and the likelihood that a complete failure of the dam would negate the possibility of reconstruction, due to current regulations. An in-kind replacement to the existing structure would change the dam’s classification to high-hazard because the camp used the dam as its foundation. The “permit-able” concept required design and construction of two separate structures: a new pier and wall foundation for the camp and a new cast-in-place concrete gravity dam which also functions as support for a new walkway to the camp. The project resulted in the construction of the only new non-snowmaking dam in Vermont in recent memory and the preservation of property values and a regional recreational resource.

Randolph Wastewater Treatment Plant Upgrade and Process Conversion

The 40-year old Randolph Wastewater Treatment Facility, originally designed for a 20-year service life, was past due for a total treatment process change and facility upgrade. Project objectives included: state-of-the-art treatment process upgrade, design capacity for nitrogen removal, improve operations efficiencies and reduce operating costs, address issues with the location in a floodplain, and develop a demonstration facility that could be accessible for educational purposes. The activated sludge treatment process was updated with sequencing batch reactor (SBR) technology and the treatment process was designed with the capability of meeting a total nitrogen limit of 7.0mg/l requirements. Existing facility buildings were repurposed and flood proofed saving project costs and preventing future damage from flooding. A completely overhauled SCADA controls system was designed for operational efficiencies. The facility was designed for ADA compatibility and accommodates tour groups from regional educational institutions. Wastewater treatment capabilities had to be maintained during construction and sequencing of construction activities were developed to allow the treatment process to continue without interruption.

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