The document summarizes long-term stewardship activities at Amchitka Island in Alaska. Major activities include soil and groundwater monitoring to ensure restrictions on access to subsurface contamination are enforced. The site covers 30,000 hectares and long-term stewardship is estimated to cost $23,000 annually and will continue in perpetuity. Monitoring involves sampling soil and groundwater every 5 years to restrict access to nuclear test sites on the island and ensure contaminants remain isolated.