DOI Finalizes Long-Awaited Modernization of Type A Natural Resource Damage Assessment Regulations

August 03, 2026 — Amanda G. Halter, Ashleigh K. Myers & Jillian Marullo - Gravel2Gavel Construction & Real Estate Law Blog
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. As discussed previously, DOI has sought to modernize what it views as an “inefficient and inflexible” process and restore the Type A procedure to its intended role as a more streamlined pathway for smaller, less contentious NRD claims. The final rule adopts a $5 million default damages threshold, allows use above that amount if all parties agree, clarifies that Type A may be used in all environments and for all natural resource types, and removes legacy model appendices that had tethered the process to outdated formulas. Reprinted courtesy of Amanda G. Halter, Pillsbury, Ashleigh K. Myers, Pillsbury and Jillian Marullo, Pillsbury Ms. Halter may be contacted at amanda.halter@pillsburylaw.com Ms. Myers may be contacted at ashleigh.myers@pillsburylaw.com Ms. Marullo may be contacted at jillian.marullo@pillsburylaw.com Read the full story...