# Advisory Council on Historic Preservation 1 document across 1 day of the archive, 0 of them final rules. The five most recent days are below. [HTML](https://downstream.sh/daily/agency/advisory-council-on-historic-preservation/) · [the long-form archive](https://downstream.sh/daily/agency/advisory-council-on-historic-preservation/archive.md) · [the daily issue](https://downstream.sh/daily/index.md) ## 18 September 2026 — 1 document [the whole issue for this day](https://downstream.sh/daily/2026-09-18.md) > The Advisory Council on Historic Preservation adopted a categorical exclusion from Department of the Interior policies under the National Environmental Policy Act. — via Downstream, https://downstream.sh/daily/agency/advisory-council-on-historic-preservation/#s-2026-09-18 *Machine-written by `claude-haiku-4-5-20251001` from the documents below.* ### Adoption of Categorical Exclusion Pursuant to the National Environmental Policy Act *Notice* — Advisory Council on Historic Preservation The Advisory Council on Historic Preservation (ACHP) is notifying the public and documenting its adoption of the Department of the Interior (DOI) categorical exclusion (CE) for policies, directives, regulations, and guidelines, under section 109 of the National Environmental Policy Act (NEPA). This notice identifies the types of actions to which the ACHP will apply the CE, the considerations that the ACHP will use in determining the applicability of the CE, and the consultation between the agencies on the use of the CE, including application of extraordinary circumstance. - **Takes effect** 18 September 2026 (14 days ago) 91 FR 59151 · FR Doc. 2026-19206 · [official PDF](https://www.govinfo.gov/content/pkg/FR-2026-09-18/pdf/2026-19206.pdf) · [federalregister.gov](https://www.federalregister.gov/documents/2026/09/18/2026-19206/adoption-of-categorical-exclusion-pursuant-to-the-national-environmental-policy-act) ## Ask an assistant instead Everything on this page is also a tool call. Add `mcp.downstream.sh` as an MCP server — no key, no account — then paste this: ``` Using the Downstream MCP server at mcp.downstream.sh, call whats_new_since with agency "Advisory Council on Historic Preservation" since 2026-09-18, then summarise what changed and list every deadline it created. ``` Reaches `whats_new_since`. The response carries its own citations and states what it is missing, including which dates it has no record for. --- Every document linked here is a work of the United States government and in the public domain. The Federal Register's HTML and XML renderings are unofficial; the PDF on each item is the official text, and that is the one to cite. Counts are arithmetic over published fields, dates are printed as filed, and titles are verbatim. Where we have nothing, this says nothing rather than estimating. The one-sentence agency summaries are machine-written from those same fields and are labelled where they appear. [Downstream](https://downstream.sh/) · [the essay](https://downstream.sh/essays/a-country-that-can-see.html) · [the daily issue](https://downstream.sh/daily/) · [MCP endpoint](https://mcp.downstream.sh)