# DOE Long-Term Stewardship **Domain:** Deep Time / U.S. Government / Legacy Management **Doc Type:** Canonical Wiki Entry **Maturity:** Developed **Evidence / Concept Status:** Level B/C — official operational program ## Definition **DOE Long-Term Stewardship** is the federal post-closure system for maintaining controls, monitoring, records, funding, and custodial responsibilities at former atomic-defense and cleanup sites. ## Why It Matters for Deep Time Continuity It provides one of the clearest government examples of an obligation surviving the active mission that created it. ## Existing Architecture / Evidence DOE defines stewardship through physical and institutional controls, monitoring, maintenance, information management, and adequate funding. ## Evidentiary Boundary Continuity custody would require a different protected object but similar institutional durability. ## Related Ontology [[wiki/Deep-Time Stewardship|Deep-Time Stewardship]] · [[wiki/Deep-Time Institutional Memory|Deep-Time Institutional Memory]] · [[wiki/Deep-Time Duty Bearer|Deep-Time Duty Bearer]] · [[wiki/Continuity Receivership|Continuity Receivership]] ## Sources / Primary Anchors - https://www.energy.gov/lm/long-term-stewardship-lessons-learned <!-- BEGIN DEEP TIME CONTINUITY ROUTING --> ## Canonical Branch [[wiki/Deep Time Continuity|Deep Time Continuity]] <!-- END DEEP TIME CONTINUITY ROUTING -->