The 2026 RODA revises the 2006 Selected Remedy by incorporating prior modifications from the 2011 ESD and the 2020 ROD Amendment, with properties exceeding 456 ppm in soil to be excavated and replaced with clean fill, while some previously sampled properties will be reevaluated for cleanup needs.

EPA emphasizes that lead soil cleanup is part of a broader strategy to reduce blood-lead levels in children, supported by community education and partnerships, with ongoing updates through newsletters and the agency’s website.

Other ongoing components of the Butte cleanup address contaminated stormwater, protect surface water quality, and reduce risk to residents and the environment, with Diggings East construction planned for this fall and additional corridor projects in future field seasons.

The EPA calls the decision a major step forward for Butte’s Superfund cleanup and a clear demonstration of commitment to health and environmental protection under the current administration.

The amendment expands the Residential Metals Abatement Program area by roughly 3,627 acres, making more than 7,000 additional properties eligible for assessment and potential cleanup.

EPA finalizes a Record of Decision Amendment that lowers the residential soil-lead cleanup level in the Butte Priority Soils Operable Unit from 1,200 ppm to 456 ppm.

The public process included a proposed plan released June 1, a 30-day public comment period, a public meeting, and consideration of input before finalizing the RODA.

Residential property sampling, evaluation, and cleanup within the expanded area are expected to take about 15 years from 2026.