For nearly three decades, the U.S. Department of the Interior’s (DOI) simplified “Type A” Natural Resource Damage Assessment (NRDA) regulations were available more in theory than in practice, constrained by dated models, narrow geographic applicability and a $100,000 cap that rarely matched the economics of modern environmental claims. DOI has now finalized revisions to the Type A natural resource damages assessment procedures under 43 C.F.R. Part 11 for hazardous substance releases under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) and the Clean Water Act (CWA), with the final rule published in the Federal Register on July 13, 2026 and scheduled to become effective August 12, 2026.
