Business Details
27 Years
experience
Trusted Engineering Solutions in Vermont
Founded in 1999, Dufresne Group has established itself as a trusted provider of civil engineering solutions across Vermont and New Hampshire. With three office locations and over 25 years of combined experience, our team of 14+ highly qualified professionals, including six licensed Professional Engineers, delivers tailored engineering services to municipal, governmental, and private sector clients. Our expertise spans water and wastewater system design, stormwater management, transportation projects, and construction services, supported by advanced computer modeling and GIS technologies.As a 100% women-owned business and registered Disadvantaged Business Enterprise (DBE), we prioritize integrity, innovation, and sustainability in every project. Our commitment to responsive client relations, local presence, and technical excellence ensures customized solutions that meet evolving infrastructure challenges while maintaining strict adherence to safety and environmental standards.
Services
Water Treatment Design
Wastewater Systems
Stormwater Management
Transportation Engineering
Construction Services
Computer Modeling
Civil Site Engineering
Asset Management
Permitting Assistance
Funding Applications
Details
- Year established: 1999
Highlights and features
- We offer 25+ years of specialized engineering expertise in Vermont and New Hampshire
- Our team includes six licensed Professional Engineers with advanced technical certifications
- We maintain 100% women-owned business status with DBE certification
- Our local presence ensures deep understanding of regional infrastructure requirements
- We implement innovative solutions combining GIS technology and computer modeling
Associations and certifications
- Disadvantaged Business Enterprise (DBE)
What people say
Superior professionalism
Excellent engineering service
Dependable partners
Technical excellence
Long-term reliability
Services
Water Treatment Design
Our water treatment design services encompass process engineering and civil design for surface water systems of all scales. With decades of experience in New England, we develop customized solutions incorporating advanced modeling techniques and regulatory compliance strategies to ensure safe, sustainable water supply infrastructure.
Wastewater Collection
We specialize in wastewater collection system evaluation and improvement, utilizing GIS technology for accurate data collection and analysis. Our services include system modeling, infrastructure upgrades, and implementation of emerging technologies to enhance municipal wastewater management efficiency and environmental compliance.
Stormwater Management
Our stormwater management solutions address both quantity and quality concerns through comprehensive system design and erosion prevention measures. We implement sustainable practices for diverse projects including steep slope developments and large-scale residential complexes, ensuring compliance with environmental regulations while protecting infrastructure integrity.
Transportation Engineering
We provide full-cycle transportation engineering services for state and federal funded projects, including sidewalk improvements, bridge construction, and roadway development. Our expertise covers NEPA compliance, funding acquisition, and construction management to deliver safe, accessible transportation infrastructure that meets community needs.
Computer Modeling
Our computer application services utilize advanced hydraulic modeling software to analyze water systems performance. With expertise in InfoSWMM and WaterGems platforms since 2008, we create calibrated models for system evaluation, improvement planning, and graphical representation using AutoCAD and GIS integration to support data-driven decision-making.
People
Naomi Johnson
President
As President and co-owner, Naomi Johnson leads Dufresne Group's strategic direction with over 20 years of civil engineering experience specializing in municipal infrastructure projects across New England.
Christina Haskins
Co-President
Co-President Christina Haskins oversees regional operations with expertise in water resource management and a focus on sustainable engineering solutions for public and private sector clients.
Andrea Day
Vice President
Vice President Andrea Day manages project delivery teams, ensuring technical excellence and client satisfaction through her extensive background in wastewater treatment system design and construction oversight.
Timothy Knapp
Regional Manager
Regional Manager Timothy Knapp directs transportation projects with specialized knowledge of federal funding requirements and compliance standards for municipal infrastructure improvements across Vermont.
Randy Goodwin
Construction Manager
Construction Manager Randy Goodwin provides on-site engineering oversight, ensuring quality control and technical accuracy during project implementation with 15+ years of field experience in civil infrastructure projects.
Questions
What engineering services does Dufresne Group offer?
We provide water/wastewater treatment design, stormwater management, transportation engineering, computer modeling, construction services, and asset management solutions for municipal and private clients.
How long has Dufresne Group been in business?
We've served Vermont and New Hampshire since our founding in 1999, with 25+ years of combined engineering experience among our team members.
Are Dufresne Group engineers licensed professionals?
Yes, we employ six licensed Professional Engineers along with multiple Engineering Interns and technical specialists across our three Vermont office locations.
What geographic areas do you serve?
We primarily serve Vermont and New Hampshire, with project experience across New England including municipal projects in both urban and rural environments.
How does Dufresne Group ensure project quality?
We maintain quality through computer modeling verification, on-site construction oversight by experienced engineers, and adherence to VTrans specifications and federal compliance standards.
Is Dufresne Group a certified business entity?
Yes, we're a registered Disadvantaged Business Enterprise (DBE) and 100% women-owned business operating under Vermont and New Hampshire certification programs.
