About Us

In 1986, Thomas E. Hamilton, CIH recognized that the New England region was in need of a consulting firm that could offer valuable, timely, and cost effective engineering solutions for industries dealing with Environmental, Health, and Safety issues. Since the company's initial inception in 1986, incorporation in 1989, and continued growth through today, Mr. Hamilton has focused on ensuring client needs are met by acquiring, developing, and maintaining some of the best professionals the region has to offer.
The team of professionals at OHI is its backbone and each member works hard to ensure all client expectations are exceeded.
Some of the professional disciplines maintained by our staff include
  • Certified Industrial Hygienists
  • Certified Safety Professionals
  • Professional Engineers
  • Certified Biosafety Professionals
  • Toxic Use Reduction Planners
  • Certified Environmental Safety & Health Trainer
With such a diverse staff, OHI has the tools to address every project regardless of size. We are small enough to perform those one-off projects like completing an indoor air quality survey in an office environment to providing online OSHA training. But we are large enough to provide extended support when necessary such as developing, implementing, and maintaining comprehensive Environmental, Health, & Safety programs in a chemical plant or providing turnkey service for assessment, design and installation of a ventilation system to reduce worker exposure.
All too often, OHI has seen the products of our competitors where the deliverable is a list of problems that you as the client are left to deal with on your own. OHI has leveraged itself in the New England region to not only identify problems but also implement cost effective solutions.
Given this philosophy, OHI has earned a reputation for being a consultancy that treats its clients as an extension of its staff. Collaboration, honesty, and full disclosure are critical.
OHI is also strategically located in Mansfield, Massachusetts to ensure prompt onsite support to major New England cities including:
  • Boston, MA
  • Worcester, MA
  • Providence, RI
  • Groton/New London, CT
  • Hartford, CT
  • Portsmouth, NH
For those clients located outside of these primary service areas, OHI can provide the same level of support with minimal notice. In addition, OHI has a regional and national network of partners that can provide timely EHS support as needed. This ensures your project is always addressed quickly to minimize business interruption.
Our staff combined with our location ensures we can quickly engineer and implement cost effective solutions for all your EH&S needs.