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Mark Duff

President & Chief Executive Officer, Perma-fix Environmental

Search every verified Mark Duff interview, podcast appearance, and on-the-record quote — each transcript cross-checked by AI and human review to confirm speaker identity. Mark Duff, President and CEO of Perma-Fix Environmental Services, has recently discussed the company's positioning and growth prospects at investor events and earnings calls. At the 12th Annual Gabelli Waste & Environmental Services Symposium in April 2026, Duff described the company as being at an "inflection point," highlighting its two business segments: radioactive waste treatment and services. He discussed the potential for waste from the Hanford site's Direct-Feed Low-Activity Waste (DFLAW) facility, noting that the plant's melters cannot be turned off and that radioactive liquid waste from its steam generation is expected to start arriving at Perma-Fix in May. Duff also emphasized the company's unique permitting and proximity to Hanford, stating that Perma-Fix is the only facility near the site with an operating plant and that obtaining permits can take years. During the Q2 2025 earnings call in August 2025, Duff reported that operational issues at the Northwest facility had been resolved by mid-quarter, with the company meeting performance goals in June. He stated that a particular waste stream is expected to be sustainable through at least 2027 and described the Northwest facility as becoming an "anchor" for the company, supporting upcoming Hanford projects and other clients. In earlier appearances, including a 2024 investor call, Duff discussed the company's work on PFAS treatment, describing the market as "tough" due to a lack of regulation, and noted that the company was working with partners on developing applications for the technology.

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