As Director of SERA’s Sustainability Resources Group, Clark works within and outside of SERA’s office to promote sustainability. He holds the firm belief that the Northwest must continue to provide national leadership in sustainability, and he is a frequent lecturer on green building process and policy.

Clark is a past chair of, and currently serves on, the International Living Building Institute Board of Directors, as well as the Board of Directors of The Natural Step. He has served in a green building advisory capacity to the City of Portland’s Bureau of Planning and Sustainability and Sustainable Development Commission, the Portland Development Commission, Multnomah and Clackamas Counties, the Oregon University System, and Oregon’s Office of the Governor.