Epsilon Associates
Sonja Sax is a senior environmental health scientist with over 20 years of expertise in indoor and outdoor air quality investigations and human health risk assessment. Currently serving as a Senior Environmental Health Scientist at Epsilon Associates, Inc. since April 2022, Sonja previously held positions such as Senior Manager at Ramboll, focusing on exposure and health risk assessments from January 2016 to March 2022, and Senior Environmental Health Scientist at Gradient from August 2005 to January 2016, specializing in air quality and exposure modeling. Sonja's academic background includes a Doctorate in Environmental Science and Engineering and a Master's in Environmental Health Management from Harvard T.H. Chan School of Public Health, along with a Bachelor's degree in Biological Chemistry from Wellesley College. Professional experience is complemented by roles at Harvard as a Postdoctoral Fellow and Research Assistant, as well as an internship at the US EPA.
Epsilon Associates
EPSILON ASSOCIATES, INC. makes permits happen. We specialize in securing environmental approvals for real estate, energy, and infrastructure development projects for public and private sector clients. Our reputation for practical strategies, a focused work effort, and successful project outcomes has made Epsilon an industry leader. Our Principals and senior staff have worked long and hard to cultivate and maintain constructive working relationships with federal and state agencies, providing effective advocacy for our clients. When coupled with carefully conceived strategies, focused environmental analyses, and clear and concise filings, our credibility with the agencies positions us to secure timely and workable approvals for our clients. At Epsilon, we pride ourselves on the strong relationships we build with our clients. The clients who have entrusted us with their work represent the area’s best-known companies and government agencies. More than 90 percent of the company’s new work comes to us via satisfied clients and referrals. We accomplish this by intelligently addressing issues raised in permitting forums, while keeping the range of issues within bounds. Epsilon is privately owned, which enables us to focus on client results, rather than corporate goals. To date, we have taken on nearly 3,000 projects, including some of the most visible projects in New England and beyond.