The proposal was published in June 2026. Butte CTEC posted the proposed plan and its Residential Lead Proposed Plan fact sheet on June 16, giving Butte residents information about a potential change that could expand or intensify residential cleanup work.

What the proposal could change

If the EPA plan is finalized, more Butte-area residential properties could qualify for lead remediation under a lower cleanup standard. That could affect how homes are tested, which properties receive cleanup work and the options available to residents seeking additional health protection.

The approved materials do not provide the proposed numerical lead threshold or the number of additional homes that could qualify. They also do not establish a final approval date or an implementation schedule. The lower cleanup level remains a proposal, not a final requirement.

The plan also should not be read as proof of current exposure levels in any particular Butte neighborhood or household. The available information does not identify specific properties that would qualify.

Free residential testing and cleanup program

A separate flyer posted by Butte CTEC on June 23 describes a Residential Metals Abatement Program. The program tests for metals and cleans residential properties free of charge, according to the flyer.

The program provides a separate route for residential metals testing and cleanup information while the EPA considers the proposed lead plan. The approved materials do not include additional eligibility details, a list of participating homes or a deadline for applying.

Site remains incomplete

EPA’s site-milestones information says construction at the Silver Bow Creek/Butte Area site is not yet complete sitewide. The site also has not been deleted from the National Priorities List, the federal list used for Superfund sites requiring cleanup.

That status provides context for the proposed residential changes: cleanup work at the site is continuing, and the federal site process has not reached completion.

Next accountability point

The site’s sixth five-year review is due in fall 2026. Five-year reviews are the next major accountability point identified in the approved materials, although the packet does not provide a specific review date or its expected findings.

For Butte residents, the immediate distinction is between available assistance and proposed standards. The free residential metals-abatement program is described in the June 23 flyer, while the EPA’s lower lead cleanup level and expanded remediation plan still await further action.