Mark Riskedahl, Executive Director

Mark grew up in a little house on the prairie in rural North Dakota. He received a B.A. from the University of Minnesota and his J.D. from Lewis and Clark Law School. Before attending law school, Mark worked in the social services, primarily with people dealing with autism. During law school, Mark worked as the NEDC Law Clerk, a Project Coordinator, and Student Director. Following graduation, Mark helped institutionalize NEDC’s capacity to protect the environment and natural resources of the Pacific Northwest by becoming the organization’s first full-time Executive Director.


Jonah Sandford, Staff Attorney

Jonah grew up in Missoula, Montana, and moved to Portland in 2003 after graduating from the University of Montana. As a law student at Lewis & Clark Law School, Jonah worked with NEDC as a Student Director and Project Coordinator, and clerked for Earthjustice, the Center for Biological Diversity, and WaterWatch of Oregon. Prior to joining NEDC as Staff Attorney, Jonah served as Executive Director of the Deschutes River Alliance. In his free time, Jonah enjoys canoeing, hiking, and goofing off with his son Jasper.

Hannah Clements, Law Clerk

Hannah is a Pacific Northwest native and grew up in the Seattle area. She studied biology at Lewis & Clark College and conducted research on urban forest restoration in Portland. Upon starting law school, Hannah became involved with NEDC right away as a volunteer and student board member. Hannah is passionate about the power of small organizations like NEDC to affect change on a local level. She is excited for what is on the horizon as the NEDC law clerk and plans to continue to pursue public interest work in the environmental field once her term is over. In her free time, Hannah enjoys trail running and hiking, riding her bike, admiring wildflowers, and making jewelry.


Alex Houston, Law Clerk

Alex joins NEDC from the Midwest. Raised in Lawrence, KS, he graduated from the University of Kansas in 2018 with degrees in Environmental Studies, Political Science, and Anthropology. He moved to Portland shortly thereafter to attend Lewis & Clark Law School, eager to make an impact via environmental law. During Alex’s first year at L&C he worked with NEDC as a student volunteer and student board member, before joining the staff as Law Clerk for Summer 2019. In his free time, Alex can usually be found in the rock climbing gym or traveling to climb outdoors. He also loves backpacking and exploring Portland’s music scene.