Mason McElroy

Mason McElroy is a seasoned environmental professional with extensive experience in project management and environmental engineering. Currently serving as a Senior Project Manager at ONE Environmental Group, LLC since October 2021, Mason oversees various environmental initiatives. Previously, Mason held the title of Senior Environmental Engineer at AdvanSix, where responsibilities included leadership in facility wastewater and hazardous waste management, as well as stormwater management and regulatory compliance. Mason also served as Client Guardian and Project Manager at Sage ATC Environmental Consulting L.P, managing significant environmental compliance projects and building strong relationships with industrial clients. Mason earned a Bachelor’s degree in Environmental Science from Columbia University in 2009.