Nick DeFilippo, Chris Hoyt and Abbegail Nack Promoted to Senior Staff Levels

Since joining Epsilon in 2015 Nick DeFilippo has supported our Air Quality group serving chemical processing and manufacturing companies, colleges and universities, industrial site developers, and government agencies. He has experience with more than two dozen environmental regulatory programs and is experienced in greenhouse gas analysis, noise monitoring, and data analysis.

Nick has been integral to many past and ongoing projects at Epsilon and is highly experienced in preparation of air emissions estimates using regulatory factors as well as custom estimates based on engineering principles. He leads the group in regulatory reporting efforts, and manages many of those projects for his clients. He is versed in preparation of air permit applications of various types in several states including Florida, Massachusetts, New Jersey, New Hampshire, and Pennsylvania.

Nick received his B.S. in Chemical Engineering from Worcester Polytechnic Institute and is a member of the American Institute of Chemical Engineers (AIChE).

A meteorologist with over ten years of professional experience, Chris joined Epsilon’s Acoustics Group in 2018. Chris’ expertise is always in high demand on a variety of projects including wind, solar, and battery storage facilities, as well as substations, industrial facilities, and numerous Boston redevelopment projects. For instance, he can identify ideal times to measure sound levels during post-construction sound-level compliance programs for wind energy projects when wind direction, hub height wind speed, ground-level wind speed, and precipitation all need to be considered.

Chris might also be found documenting ambient measurements for a solar energy project in New York, Ohio, or Wisconsin, measuring compliance for a wind energy project in Colorado, Maryland, Massachusetts, Michigan, New York, or Iowa, or a compressor station in Michigan. His time on renewable energy projects frequently brings him to his home state of New York and has allowed him to gain valuable experience in working through the complex Article 10/Section 94-c regulatory process.

Chris earned his M.S. in Environmental Studies: Atmospheric Science at the University of Massachusetts-Lowell and his B.S. in Meteorology at Valparaiso University. Chris is a member of the Institute of Noise Control Engineering (INCE) and American Meteorological Society (AMS).

Since joining Epsilon Associates in 2017 after graduating from Worcester Polytechnic Institute, where she received her B.S. in Chemical Engineering and Professional Writing, Abbey Nack has played a key role in the growth of Epsilon’s offshore wind practice, including supporting the successful federal permitting of the precedent-setting 800-megawatt (MW) Vineyard Wind 1 offshore wind (OSW) project. She has worked on OSW projects that combined will produce at least 7,000 MW of renewable energy. Throughout the permitting process, she has interfaced extensively with developers’ Engineering, Procurement, and Construction teams, developing a deep understanding of how OSW projects are constructed start-to-finish. Using this knowledge, she developed a comprehensive air emission calculation methodology that has been used in several Construction and Operations Plans (COPs) and to obtain a first-of-its-kind Outer Continental Shelf Air Permit from the Environmental Protection Agency. The methodology that she developed has been subsequently adopted and referenced in the COPs prepared by other environmental consultants for other OSW projects.

Abbey recently passed the second part of the professional engineering exam and is now a Registered Professional Chemical Engineer in Massachusetts. Abbey is a member of New England Women in Energy and the Environment (NEWIEE).