- Chevron Energy Solutions
- Offers solutions, expertise, performance contracts, and other environmentally-sound energy solutions to public institutions and businesses.
- Institute for Environmental Assessment
- Offers consulting services related to indoor air quality, asbestos, and health and safety.
- WYG Group
- An international multi-disciplinary consultant to the built, natural and social environment, with over 3000 staff located in more than 30 offices.
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