2024 METG Reappointment Framework Report, Oct 2024
The Montana Environmental Trust Group (METG) Reappointment Framework Report, submitted to METG’s beneficiaries October 1, 2024, is available here.
2024 Groundwater and Surface Water Interim Corrective Action Performance Monitoring Plan, Sept 2024
Now available: 2024 Groundwater and Surface Water Interim Corrective Action Performance Monitoring Plan for the former ASARCO East Helena Facility, prepared September 2024. Download the PDF here.
2023 Interim Corrective Action Performance Monitoring Report
Now available: the 2023 Interim Corrective Action Performance Monitoring Report for the former ASARCO East Helena Facility, prepared November 2024. Download the PDF here.
2023 Groundwater and Surface Water Interim Corrective Action Performance Monitoring Plan, Dec 2023
Now Available: 2023 Groundwater and Surface Water Interim Corrective Action Performance Monitoring Plan for the former ASARCO East Helena Facility, Prepared December 2023. Download the PDF here.
2022 Water Resources Monitoring Report, Dec 2023
Now Available: 2022 Water Resources Monitoring Report for the former ASARCO East Helena Facility, prepared December 2023. Download the PDF here.
2022 Groundwater and Surface Water Corrective Action Monitoring Plan, Dec 2022
Now Available: 2022 Groundwater and Surface Water Corrective Action Performance Monitoring Plan for the former ASARCO East Helena Facility, Prepared December 2022. Download the PDF here.
2022 Sampling Methodology Addendum: Unfumed Slag Processing and Removal Groundwater Monitoring Plan, Feb 2022
Sampling Methodology Addendum – Unfumed Slag Processing and Removal Groundwater Monitoring Plan. Prepared February 2022.
2021 Water Resources Monitoring Report
Now available: 2021 Water Resources Monitoring Report for the East Helena Facility. Finalized December 2022. Download the PDF here.
2021 East Helena Corrective Measures Implementation Work Plan, Aug 2021
Now Available: Corrective Measures Implementation (CMI) Work Plan for the East Helena Facility, finalized August 2021. Download the PDF here.
2021 Unfumed Slag Processing and Removal – Groundwater Monitoring Plan, August 2021
Unfumed Slag Processing and Removal – Groundwater Monitoring Plan for the East Helena Former Smelter Facility. Prepared August 2021.