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Submissions from 2025

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REVISED FINAL MULTI-PATHWAY RESIDENTIAL METALS ABATEMENT PROGRAM PLAN, Atlantic Richfield Company and Butte Silver Bow

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Berkeley Pit and Discharge Pilot Project Quarterly Pilot Project Report Third Quarter 2024, Atlantic Richfield Company and Mark Thompson

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Residential Metals Abatement Program Investigation Summary Report (Non-Residential Parcels – Indoor Dust) - CCCS Gym Annex, Christopher Berg and Thomas J. Beckman

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Butte Priority Soils Operable Unit (BPSOU) 2024 Monthly Progress Report. Consent Decree for the Butte Priority Soils Operable Unit. Civil Action No. CV 89-039-BU-SEH, Josh Bryson

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Butte Priority Soils Operable Unit (BPSOU) Groundwater Remedy Optimization Subdrain Pump Station Preliminary (30%) Remedial Design Package Submittal, Josh Bryson

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MONTHLY PROGRESS REPORT BUTTE PRIORITY SOILS OPERABLE UNIT CONSENT DECREE PARTIAL REMEDIAL DESIGN/REMEDIAL ACTION AND OPERATION AND MAINTENANCE, Josh Bryson

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Butte Reclamation Evaluation System Corrective Action Plans for Reclaimed Sites - 2024 BRES Site Specific Corrective Action Plans for Quadrant 1, Butte-Silver Bow Department of Reclamation and Environmental Services

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Exhibit 2 “Basement ISWP” 1029 Oregon Ave. Butte, MT 59701 January 30, 2025 Database Residential Identifier: R-03611, Butte-Silver Bow Department of Reclamation and Environmental Services

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Exhibit 2 “Basement ISWP” 122 W. Daly St. Butte, MT 59701 January 16, 2025 Database Residential Identifier: R-00845, Butte-Silver Bow Department of Reclamation and Environmental Services

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Exhibit 2 “Basement ISWP” 1232 E. Second St. Butte, MT 59701 January 21, 2025 Database Residential Identifier: R-04389, Butte-Silver Bow Department of Reclamation and Environmental Services

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Exhibit 2 “Basement ISWP” 223 N. Alabama St. Butte, MT 59701 January 2, 2025 Database Residential Identifier: R-00455, Butte-Silver Bow Department of Reclamation and Environmental Services

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Exhibit 2 “Basement ISWP” 537 S. Colorado St. Butte, MT 59701 January 22, 2025 Database Residential Identifier: R-05338, Butte-Silver Bow Department of Reclamation and Environmental Services

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Exhibit 2 “Basement ISWP” 604 S. Clark St. Butte, MT 59701 January 24, 2025 Database Residential Identifier: R-01537, Butte-Silver Bow Department of Reclamation and Environmental Services

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Exhibit 2 “Basement ISWP” 615 W. Galena St. Butte, MT 59701 January 23, 2025 Database Residential Identifier: R-05384, Butte-Silver Bow Department of Reclamation and Environmental Services

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FINAL REMOVAL SIGN OFF Individual Site Work Plans 2025 Round 2 RMAP Basement Projects Butte, MT 59701 January 31, 2025, Butte-Silver Bow Department of Reclamation and Environmental Services and Atlantic Richfield Company

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Residential Metals Abatement Program Construction Completion Report East Middle School, Environmental Resource Management (ERM)

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NRDP Comments on BP-Atlantic Richfield (BP-AR’s) Draft Materials Management Plan and Associated Documents at Butte Priority Soils Operable Unit of the Silver Bow Creek/Butte Area Superfund Site, Jim Ford

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Butte Priority Soils Operable Unit (BPSOU) Final BPSOU Insufficiently Reclaimed Sites Belle of Butte (BRES No. 8 & UR-39) Remedial Action Work Plan (RAWP) Request for Change IR- 2024-RA-01, Mike McAnulty

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2025 Draft Final Unreclaimed Sites Quality Assurance Project Plan (QAPP), Pioneer Technical Services, Inc.

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Butte Reduction Works (BRW) Phase II Interim Demolition Plan Construction Drawings and Floodplain Encroachment Analysis, Pioneer Technical Services, Inc.

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Draft Final BPSOU Insufficiently Reclaimed Sites Josephine Shaft (IR-37) Remedial Action Work Plan (RAWP), Pioneer Technical Services, Inc.

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Draft Final Butte Priority Soils Operable Unit (BPSOU) Unreclaimed Sites: UR-03 Site Remedial Action Work Plan (RAWP), Pioneer Technical Services, Inc.

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Draft Final Silver Bow Creek Conservation Area Repository Data Gap Data Summary Report (DSR), Pioneer Technical Services, Inc.

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Final Horseshoe Bend Effluent Line (HBEL) Discharge Structure Surface Enhancements Work Plan, Pioneer Technical Services, Inc.

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Approval Letter for Final BPSOU Insufficiently Reclaimed Sites Belle of Butte (BRES No. 8 & UR-39) Remedial Action Work Plan (RAWP) Request for Change IR-2024-RA-01, Revision 1 (dated December 13, 2024), Molly Roby

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Re: Approval letter for the Butte Priority Soils Operable Unit (BPSOU) Draft Residential Metals Abatement Program Investigation Summary Report (Non‐Residential Parcels – Indoor Dust) – CCCS Gym Annex (dated October 4, 2024), Molly Roby

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Re: Approval letter for the Butte Priority Soils Operable Unit (BPSOU) Revised Final Multi- Pathway Residential Metals Abatement Program (RMAP) Plan (dated January 13, 2025), Molly Roby

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Re: Comment letter for the Butte Priority Soils Operable Unit (BPSOU) Draft Final Materials Management Plan (dated November 21, 2024), Emma Rott

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Re: December 2024 Berkeley Pit Migratory Waterfowl Protection Monthly Report, Mark Thompson and Loren Burmeister

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Re: Butte Mine Flooding Operable Unit Berkeley Pit and Discharge Pilot Project – December 2024 Monthly Discharge Monitoring Report, Mark Thompson and Dave Griffis

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Re: BUTTE MINE FLOODING SITE CD, CV 02-35 Bu-RFC, 2024 Fourth Quarter Report, Mark Thompson and Dave Griffis

Submissions from 2024

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PILOT PROJECT QUALITY ASSURANCE PROJECT PLAN 2024 UPDATE, Alloy Group

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Butte Priority Soils Operable Unit (BPSOU) Draft Final Unreclaimed Sites Field Sampling Plan (FSP) Package #11: UR-49 and UR-50, Atlantic Richfield Company

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TECHNICAL SPECIFICATIONS - Silver Bow Creek Conservation Area - 60% SUBMITTAL April 2024, Atlantic Richfield Company

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REVISED FINAL MULTI-PATHWAY RESIDENTIAL METALS ABATEMENT PROGRAM PLAN, Atlantic Richfield Company and Butte Silver Bow

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Residential Metals Abatement Program – Interior School Dust – Investigation Summary Report – After the Bell Child Care Center, Thomas J. Beckman, Christopher Berg, and Environmental Resource Management (ERM)

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Residential Metals Abatement Program Construction Completion Report (Non- Residential Parcels – Indoor Dust) Butte Career Center / Webster Garfield, Christopher Berg and Thomas J. Beckman

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Residential Metals Abatement Program Construction Completion Report (Non- Residential Parcels – Indoor Dust) East Middle School, Christopher Berg and Thomas J. Beckman

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Residential Metals Abatement Program Construction Completion Report (Non- Residential Parcels – Indoor Dust) Kennedy Elementary, Christopher Berg and Thomas J. Beckman

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Residential Metals Abatement Program Construction Completion Report Butte Career Center / Webster Gar􀏐ield, Christopher Berg, Thomas J. Beckman, and Environmental Resource Management (ERM)

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Residential Metals Abatement Program Construction Completion Report Kennedy Elementary, Christopher Berg, Thomas J. Beckman, and Environmental Resource Management (ERM)

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Residential Metals Abatement Program Construction Completion Report (Non- Residential Parcels – Indoor Dust) Silver Bow Montessori, Christopher Berg, Thomas J. Beckman, and Environmental Resource Management (ERM)

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Residential Metals Abatement Program Investigation Summary Report Kennedy Elementary School Post- Remedial Action Surface Dust Sampling, Christopher Berg and Elsie King

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Approved Silver Bow Creek Conservation Area Repository Data Gap Quality Assurance Project Plan Request for Change to Install Additional Test Pits and Perform Material Characterization, Josh Bryson

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Attachment A Demonstration of Need for Butte Priority Soils Operable Unit (BPSOU) Temporary Construction Surface Water Performance Standards Variance Request for Grove Gulch Sedimentation Bay Remedial Action Site, Josh Bryson

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Berkeley Pit Geochemical and Limnological Evaluation Pre-Design Investigation (PDI) Work Plan, Josh Bryson

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Berkely Pit Repository Cost Comparison, Josh Bryson

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Butte Priority Soils Operable Unit Diggings East 60% Remedial Design Package Submittal, Josh Bryson

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Butte Priority Soils Operable Unit Grove Gulch Sedimentation Bay 100% Remedial Design, Josh Bryson

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Butte Priority Soils Operable Unit SBCCA Principles for a Greener Cleanup Report, Josh Bryson

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Butte Reduction Works (BRW) Phase II Interim Demolition Plan Construction Drawings and Floodplain Encroachment Analysis, Josh Bryson

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Butte Reduction Works (BRW) Phase III Quality Assurance Project Plan (QAPP) Request for Change BRW-2024-01, Josh Bryson

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RE: Approved Silver Bow Creek Conservation Area Repository Data Gap Quality Assurance Project Plan Request for Change to Install Additional Test Pits and Perform Material Characterization, Josh Bryson

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RE: Butte Reduction Works (BRW) Phase III Quality Assurance Project Plan (QAPP) Request for Change BRW-2024-01, Josh Bryson

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RE: Silver Bow Creek Butte Area NPL Site 2nd Quarter 2024 Butte Priority Soils Operable Unit Interim Site-Wide Surface Water Monitoring Data Report. Consent Decree- Civil Action No. CV 89-039-BU-SHE, Josh Bryson

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RE: Silver Bow Creek Conservation Area Repository Data Gap Quality Assurance Project Plan (QAPP), Josh Bryson

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Silver Bow Creek Butte Area NPL Site 3rd Quarter 2024 Butte Priority Soils Operable Unit Interim Site-Wide Surface Water Monitoring Data Report. Consent Decree- Civil Action No. CV 89- 039-BU-SHE, Josh Bryson

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Silver Bow Creek Butte Area NPL Site 4th Quarter 2023 Butte Priority Soils Operable Unit Interim Site-Wide Surface Water Monitoring Data Report. Consent Decree- Civil Action No. CV 89-039-BU-SHE, Josh Bryson

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Silver Bow Creek/Butte Area NPL Site Butte Priority Soils Operable Unit, Remedial Design Documents for the Blacktail Creek Area Groundwater Hydraulic Control System, Josh Bryson

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Silver Bow Creek/Butte Area NPL Site Butte Priority Soils Operable Unit, Remedial Design Documents for the Blacktail Creek Area Groundwater Hydraulic Control System, Josh Bryson

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Silver Bow Creek Butte Area NPL Site Fall Semi-Annual 2023 Butte Priority Soils Operable Unit Interim Site-Wide Groundwater Monitoring Data Report. Consent Decree- Civil Action No. CV 89-039-BU-SHE, Josh Bryson

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Silver Bow Creek Butte Area NPL Site Spring Semi-Annual 2024 Butte Priority Soils Operable Unit Interim Site-Wide Groundwater Monitoring Data Report. Consent Decree- Civil Action No. CV 89-039-BU-SHE, Josh Bryson

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Silver Bow Creek Conservation Area Repository Data Gap Quality Assurance Project Plan Request for Change to Install Additional Test Pits and Perform Material Characterization, Josh Bryson

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Silver Bow Creek Conservation Area (SBCCA) 60% Technical Specifications Submittal, Josh Bryson

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TECHNICAL MEMORANDUM Grove Gulch Earth Volumetric Studio Model Inputs, Josh Bryson

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Pilot Project 2024 Annual Update, Loren Burmeister and Mark Thompson

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Butte Priority Soils Operable Unit, Butte Reclamation Evaluation System Draft 2024 Field Evaluation of Previously Reclaimed Sites Summary and Technical Recommendations Report, Butte-Silver Bow Department of Reclamation and Environmental Services

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FINAL 2023 BRES FSR and CAPs, Butte-Silver Bow Department of Reclamation and Environmental Services

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Butte Reduction Work (BRW) Phase II Interim Demolition Plan Construction Drawings and Floodplain Encroachment Analysis, Julia Crain

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Proposed Plan to Amend the Remedial Action for the Butte Priority Soils Operable Unit, Environmental Protection Agency

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2024 Residential Metals Abatement Program (RMAP) Field Sampling Plan (FSP) – Indoor Dust – Group 10 - After the Bell Child Care Center, Environmental Resource Management (ERM)

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2024 Residential Metals Abatement Program (RMAP) Field Sampling Plan (FSP) – Indoor Dust – Group 11 - Baptist Student Union, Environmental Resource Management (ERM)

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2024 Residential Metals Abatement Program (RMAP) Field Sampling Plan (FSP) – Indoor Dust – Group 11 - Baptist Student Union, Environmental Resource Management (ERM)

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2024 Residential Metals Abatement Program (RMAP) Field Sampling Plan (FSP) – Indoor Dust – Kennedy Elementary Surface Dust Resampling, Environmental Resource Management (ERM)

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2024 Residential Metals Abatement Program (RMAP) Field Sampling Plan (FSP) – Indoor Dust – Kennedy Elementary Surface Dust Resampling, Environmental Resource Management (ERM)

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Remedial Action Work Plan Silver Bow Montessori, Environmental Resource Management (ERM)

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Residential Metals Abatement Program Construction Completion Report (Non- Residential Parcels – Indoor Dust) Small World Day Care, Environmental Resource Management (ERM)

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Residential Metals Abatement Program Construction Completion Report (Non-Residential Parcels – Indoor Soil) - Butte High School, Environmental Resource Management (ERM)

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Residential Metals Abatement Program Construction Completion Report (Non-Residential Parcels – Indoor Soil) - Butte High School, Environmental Resource Management (ERM)

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Residential Metals Abatement Program Investigation Summary Report After the Bell Child Care Center, Environmental Resource Management (ERM)

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Residential Metals Abatement Program Investigation Summary Report (Non-Residential Parcels – Indoor Dust) - East Middle School, Environmental Resource Management (ERM)

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Residential Metals Abatement Program Investigation Summary Report (Non-Residential Parcels – Indoor Dust) East Middle School, Environmental Resource Management (ERM)

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Residential Metals Abatement Program Investigation Summary Report (Non-Residential Parcels – Indoor Dust) East Middle School, Environmental Resource Management (ERM)

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Residential Metals Abatement Program Investigation Summary Report (Non-Residential Parcels – Indoor Dust) - Emerson Elementary School, Environmental Resource Management (ERM)

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Residential Metals Abatement Program Investigation Summary Report (Non-Residential Parcels – Indoor Dust) - Gold Hill Lutheran Church (Creativity Factory Preschool), Environmental Resource Management (ERM)

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Residential Metals Abatement Program Investigation Summary Report (Non- Residential Parcels – Indoor Dust) Small World Daycare, Environmental Resource Management (ERM)

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Residential Metals Abatement Program Investigation Summary Report (Non-Residential Parcels – Indoor Dust) - Small World Daycare, Environmental Resource Management (ERM)

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Residential Metals Abatement Program Investigation Summary Report (Non-Residential Parcels – Indoor Dust) - Small World Daycare, Environmental Resource Management (ERM)

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Residential Metals Abatement Program Investigation Summary Report (Non-Residential Parcels – Indoor Dust) United Congregational Church (Crayon Academy Preschool), Environmental Resource Management (ERM)

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Draft Comments on BPSOU “Diggings East 60% Remedial Design Package” Received from British Petroleum - Atlantic Richfield Company (BP-AR) on 4/23/2024, Jim Ford

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Approval letter for the Butte Priority Soils Operable Unit (BPSOU) Revised 2023 Residential Metals Abatement Program (RMAP) Field Sampling Plan (FSP) – Indoor Dust – Group 8 – Gold Hill Lutheran Church (Creativity Factory Preschool) and United Congregational (Crayon Academy Preschool) (dated July 26, 2023), Nikia Greene

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Approval letter for the Request for Change (RFC) to the Butte Priority Soils Operable Unit (BPSOU) Request for Change (RFC)-BRW-2023-03 to the Final Butte Reduction Works (BRW) Smelter Area Mine Waste Remediation and Contaminated Groundwater Hydraulic Control Site Phase III Quality Assurance Project Plan (QAPP) (Phase III) (dated June 29, 2023)., Nikia Greene

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Re: Approval of Berkeley Pit Predictive Water Level Model letter; dated January 24, 2024, Nikia Greene

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Re: Approval of Quality Assurance Project Plan, 2024 [QAPP] – Butte Mine Flooding Operable Unit, Long-Term Monitoring Program; dated November 30, 2023, Nikia Greene

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Re: Comments on: Berkeley Pit and Discharge Pilot Project, Quarterly Pilot Project Report, Third Quarter 2023, dated December 20, 2023, Nikia Greene

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BMFOU Pilot Project RFC - REQUEST FOR CHANGE, Nikia Greene and Daryl Reed

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Butte Priority Soils Operable Unit (BPSOU) Draft Final Quarterly Operations and Maintenance Report Butte Treatment Lagoon System – Third Quarter 2024., Dave Griffis

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Submittal of Operations and Maintenance Manual for the Horseshoe Bend Water Treatment Plant, Dave Griffis and Mark Thompson

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Repository and Haul Route Geotechnical Pre-Design Investigation (PDI) Work Plan, Jacobs Engineering Group

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Repository and Proposed Haul Route – Silver Bow Creek Conservation Area Quality Assurance Project Plan, Jacobs Engineering Group