What’s next for Butte Superfund? Construction of the Diggings East stormwater pond and park project begins this summer.
What's New
The latest news and updates on Superfund work in the Butte–Silver Bow Creek region.
ARCO selects Butte Repository to dump toxic dirt in Silver Bow Creek cleanup
Date: Mar 27, 2026 Published By: KXLF News BUTTE -This summer, the plan is to start moving the more than 1 million cubic yards of contaminated dirt...
Silver Bow Creek Greenway: A Legacy Worth Protecting
Date: Mar 24, 2026 Published By: The Montana Standard Guest View, Greenway Service District Board – Montana Standard March 24, 2026 In Superfund...
October 2025 Superfund Update: Lead cleanup levels revised, EPA Five Year Review, Diggings East design near complete
EPA revised the national guidance for cleanup of lead in residential areas. We explain what this means for Butte and discuss upcoming stormwater projects.
Montana Pole & Treating Plant Factsheet (August 2025)
DEQ’s update describes progress at the Pole Plant since partially treated soils were moved to a repository in 2022 and goes over future remediation needs.
August 2025 Superfund Update: Blacktail Creek restoration design, stormwater basin leak evalaution, Sister Dump in Walkerville sampled
This update gives a first look at plans for remediation and restoration of Blacktail Creek, discusses how stormwater treatment basins will be checked for leaks, and sampling of a historic mining area in Walkerville.
Streamside Tailings Monitoring Report 2024
This is a detailed monitoring report for 2024 for the Streamside Tailings Operable Unit which is the portion of the Superfund Site along Silver Bow Creek below Butte.
June 2025 Superfund Update: Stormwater basin planned near Williamsburg, work on Grove Gulch resumes
This update covers a new stormwater basin planned on the south side of Butte and progress on the Grove Gulch stormwater sedimentation bay.
Winter 2025 Superfund Update: Berkeley Pit waste disposal, Belle of Butte Mine reclamation, Grove Gulch project
This update covers ARCO considering disposal of mine waste in the Berkeley Pit and shows photos of reclamation at the Belle of Butte Mine in Walkerville and the Grove Gulch stormwater project.
Westside Soils Summary EPA Presentation
EPA’s update summarizes the Remedial Investigation of the Westside Soils Operable Unit which includes areas west and north of Butte as well as the Blacktail Creek watershed south of town. The Westside Soils is the last remaining portion of the Superfund Site to reach the Remedial Investigation milestone.
November 2024 Superfund Update: Residential lead and Copper Mountain waste repository
This update looks at a new cleanup plan for residential lead and ARCO’s evaluation of the Copper Mountain waste repository which was completed in the 1990s.
‘Butte’s river’ to be focus of Thursday DEQ presentation
Author: Duncan Adams Date: Sep 16, 2024 Published By: The Montana Standard The cleanup crews, for posterity, left a stark reminder of the mining...