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About Us

O'Reilly, Talbot & Okun Engineering Associates

With Transparency, Respect and Togetherness

we’re providing common ground solutions for clients, and supportive leadership for the future.

O’Reilly, Talbot & Okun (OTO) is a specialty engineering firm. For over 25 years, we’ve developed our knowledgeable and experienced team to provide resourceful and cost-effective Geotechnical, Environmental, and Industrial Hygiene consulting services throughout New England, and to other parts of the country.

With time being an extraordinary equalizer, we’ve seen our start on the second floor of a founding Principal’s home evolve to maintaining three office locations (Springfield and Westborough, Massachusetts and Storrs, Connecticut). And, while building on traditions that have made our company successful, we’ve embarked on even more exciting paths including providing additional services, team personnel expansion, and an internal transition of leadership. Locking in core values of Transparency, Respect, and Togetherness, OTO’s continued evolution and adaptability ensures we keep providing our clients and community with quality-driven and credible results.


Learn About Our Team

Every company and each project has a story to tell, and a place to live and grow. We'd love to hear your story, to share ours, and discover what we can develop together.

OTO's Services Our Team

As a team of engineering and scientific professionals

We strive to maintain positive, collaborative work relationships with our clients. Communication is the key to understanding our Clients’ needs throughout each stage of a project and when the unexpected happens, we adapt our practices accordingly.

We know that building solid, goal-oriented relationships allows us to keep doing what we do best: use our technical skills to solve clients’ problems. We are a firm small enough to offer our clients personal service, yet large enough to tackle big jobs and our clients generally include developers, design professionals and contractors, general industry and government agencies. And, collaborating with OTO couldn’t be easier - give us a call or visit our FAQs for more information!

Our diverse staff, with a range of technical abilities to solve complex problems, has experience on projects of varying technicality, size, scope, and budget. Our team includes:

  • Massachusetts Licensed Site Professionals (LSPs)
  • Registered Professional Engineers (PEs)
  • Connecticut Licensed Environmental Professionals (LEPs)
  • Certified Safety Professional (CSP)
  • Certified Indoor Environmental Consultant (CIEC)
  • Certified Hazardous Materials Manager (CHMM)
  • Massachusetts Soil Evaluator
  • Massachusetts Solid Waste Third Party Inspector
  • Radon Measurement Professional
We also maintain Massachusetts and Connecticut licenses for asbestos inspectors, project monitors, management planners, and designers. And, most importantly, we’re fortunate to have an incredibly bright and talented group of field scientists, technical staff, and administrative support.

OTO provides clients with technical knowledge and capabilities, while cultivating an encouraging environment for employees to work, learn and grow. This enables each of us at OTO to have a strong sense of ownership both in our work, and in our clients’ best interests. As a generational company we foster Intentionality, Versatility, Curiosity, and Equality in a fun atmosphere, and we’re always on the lookout for the next OTO team member. Whether just beginning or even transitioning your own Careers, we’d love to hear from you to discuss the possibilities!



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