Adds a new paragraph (5) to 16 U.S.C. 3842(h) requiring the Secretary to establish a composting practice standard and to review any composting facility practice standard established before the date of enactment under the subsection's process.

Primary affected groups include farmers, ranchers, landowners, and conservation planners who use federal conservation programs: they will gain a clear regulatory basis to include composting in conservation plans and potentially access program support tied to conservation practice lists. Composting facility operators and municipal/municipal‑solid‑waste managers may be impacted by new practice standards and by EPA‑USDA coordination on proximity rules that could affect siting, operations, and community protections. Local governments and nearby communities could see changes in how composting projects are planned and evaluated, especially where "nearby" community impacts are considered. Federal agencies (USDA and EPA) will incur administrative workload to draft regulations, create the composting practice standard, and harmonize interagency guidance. Environmental outcomes are likely positive (increased soil health, organic matter recycling, reduced landfill disposal), but specifics will depend on the content of the regulations and practice standard. The provision does not allocate funding or create explicit new program spending, so effects will be realized through existing conservation program authorities once standards are in place.