Business Details
22 Years
experience
Emergency
services
Expert Environmental & Civil Engineering Solutions in Mansfield, MA
OHI Engineering was founded in 2004 to provide comprehensive environmental and civil engineering solutions to industrial, commercial, public, and private sector clients. Our team of licensed professionals, including geologists, environmental scientists, and civil engineers, brings an average of 25+ years of experience to every project. We specialize in environmental assessments, remediation systems, and engineering design while prioritizing client needs, regulatory compliance, and environmental stewardship. With offices in Mansfield and Amherst, Massachusetts, we serve New England and beyond, delivering turnkey solutions that save clients time, money, and effort.Our 120 years of combined leadership experience ensures complex challenges are resolved efficiently through innovative approaches like soil vapor extraction, groundwater remediation, and stormwater system design. We maintain long-term relationships with clients such as The Trustees of Reservations and Brookhaven at Lexington by consistently exceeding expectations through technical expertise and personalized service.
Services
Environmental assessments
Remediation systems
Geotechnical investigations
Stormwater design
Underground storage tank removal
Hydrogeological studies
Septic system design
Environmental permitting
Construction monitoring
Emergency response
Details
- Year established: 2004
Highlights and features
- 38+ years of environmental engineering expertise from principal staff
- Comprehensive services from site assessment to remediation and permitting
- Client-focused approach with 120 years combined leadership experience
- Proven success in complex remediation projects like PCB and coal ash cleanup
- Licensed for remediation in MA, NH, and CT with regional expertise
Associations and certifications
- Licensed Site Professionals
- Licensed Environmental Professionals
- Professional Engineers
- Professional Geologists
What people say
Outstanding partner
Successful role
Very reasonable
Tirelessly worked
Confidence in team
Services
Environmental assessments
Our licensed professionals conduct Phase I/II environmental site assessments to identify contamination risks and regulatory compliance issues. We specialize in historical site analysis for properties dating back over 100 years, providing detailed reports that guide remediation strategies and development plans. Our assessments cover commercial, industrial, and residential properties across New England.
Remediation systems
We design and implement customized remediation systems including soil vapor extraction, groundwater pump-and-treat, and in-situ chemical oxidation. Our team selects methods based on site-specific conditions, successfully resolving contamination from petroleum, PCBs, and industrial chemicals. Projects include former dry cleaning facilities and metal plating sites requiring regulatory closure.
Geotechnical investigations
Our geotechnical services include subsurface exploration, laboratory testing, and foundation recommendations. We assess soil stability for residential subdivisions, commercial developments, and infrastructure projects. Recent work includes supporting a 5-story residential building expansion and analyzing soil conditions for septic systems.
Stormwater design
We create stormwater management systems that comply with environmental regulations while preventing erosion and flooding. Our designs integrate with site grading plans for commercial developments and residential subdivisions, including sediment control measures for construction projects in sensitive areas.
Environmental permitting
We navigate complex permitting requirements for environmental projects under Massachusetts Contingency Plan and other state regulations. Our team secures approvals for remediation activities, water supply projects, and land development plans, ensuring compliance with public health and safety standards.
People
Jim Borrebach
Principal
With 38+ years of experience, Jim specializes in environmental remediation and civil engineering. He holds licenses in multiple states and has managed projects for drycleaning facilities, metal plating sites, and residential developments. His technical expertise includes groundwater monitoring and stormwater system design.
Brian G. Snow
Senior Project Manager
Brian has 28+ years of environmental engineering experience, focusing on site remediation and regulatory compliance. He designed cleanup systems for contaminated properties and served on environmental commissions. His work includes indoor air investigations and litigation support for hazardous waste cases.
Lyons Witten
Regional Manager
Lyons brings 34+ years of hydrogeology expertise, managing hundreds of remediation projects. He specializes in groundwater contamination, aquifer modeling, and water supply permitting. His community involvement includes chairing local water supply protection committees for over a decade.
Douglas C. Morrison
Senior Project Manager
Doug has 39+ years of environmental project management experience, overseeing pipeline utilities and industrial spill remediation. He coordinates field operations and regulatory reporting while maintaining expertise in classic motorcycle restoration as an award-winning builder.
Questions
What geographic areas do you serve?
We primarily serve New England (MA, NH, CT, RI, VT) with project experience across the continental United States.
What industries do you work with?
We serve industrial, commercial, municipal, residential, and energy sectors including drycleaners, metal platers, and developers.
How quickly can you respond to environmental emergencies?
Our emergency response team mobilizes rapidly, with demonstrated capability to resolve critical contamination issues within 60 days.
What remediation methods do you use?
We employ excavation, soil vapor extraction, chemical oxidation, pump-and-treat systems, and bioremediation tailored to site conditions.
Are your staff licensed professionals?
Yes, we have Licensed Site Professionals, Professional Engineers, and Geologists licensed in multiple New England states.
Can you handle large-scale development projects?
Our team successfully supported a $60M expansion including a 48-unit residential building with full permitting and construction oversight.
