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Silver Bow Creek/Butte Area Superfund Site

Submissions from 2023 2023

Re: Approval letter for the Request for Change (RFC) to the Butte Priority Soils Operable Unit (BPSOU) Revised Request for Change (RFC)-BRW-2023-02 to the Butte Reduction Works (BRW) Smelter Area Mine Waste Remediation and Contaminated Groundwater Hydraulic Control Site Quality Assurance Project Plan (QAPP) for Microbial Analysis and Biotreatability (dated July 13, 2023), Nikia Greene

Re: Approval of Quality Assurance Project Plan, 2023 [QAPP] – Butte Mine Flooding Operable Unit, Long-Term Monitoring Program; dated November 30, 2022, Nikia Greene

Re: Comment letter for the Butte Priority Soils Operable Unit (BPSOU) Draft Final Quarterly Operations and Maintenance Report Butte Treatment Lagoon System – Fourth Quarter 2022 (dated March 30, 2023), Nikia Greene

Re: Comments for the Draft Residential Metals Abatement Program – Indoor Soil – Investigation Summary Report – Butte High School (received July 5, 2023), Nikia Greene

Re: Comments on the Butte Priority Soils Operable Unit (BPSOU) Draft Blacktail Creek Riparian Actions, Pre-design Investigation Work Plan & Uniform Federal Policy- Quality Assurance Project Plan, (dated June 27, 2023), Nikia Greene

Re: Comments on the Draft Butte Priority Soils Operable Unit (BPSOU) 2022 Draft Site- Wide Surface Water Monitoring Data Summary Report (dated April 7, 2023), Nikia Greene

Re: Comments on the Draft Butte Priority Soils Operable Unit (BPSOU) 2022 Groundwater Monitoring Data Summary Report, January 2022 – December 2022 (dated April 10, 2023), Nikia Greene

Re: Comments on the Draft Butte Priority Soils Operable Unit (BPSOU) Buffalo Gulch 60 Percent Design (dated December 9, 2022), Nikia Greene

Re: Conditional approval for the Butte Priority Soils Operable Unit (BPSOU) Butte Reclamation Evaluation System (BRES) 2021 Annual Operations and Maintenance (O&M) Report, 2021 BRES Annual Summary Report for Work Completed in Quadrant 1 (dated November 18, 2022), Nikia Greene

Approval Page - Butte Priority Soils Operable Unit Residential Metals Abatement Program - Field Sampling Plan - Goldhill Lutheran Church and United Congregational - Indoor Dust, Nikia Greene, Daryl Reed, and Eric Hassler

2023 REVISED OPERATION AND MAINTENANCE PLAN Railroad Stormwater Best Management Practices within Butte Priority Soils Operable Unit for BNSF Railway Company and Union Pacific Railroad, Kennedy Jenks

Data Management Plan BNSF and Union Pacific Railroad Assets within Butte Priority Soils Operable Unit, Kennedy Jenks

QUALITY ASSURANCE PROJECT PLAN: Long-Term Operation and Maintenance of Railroad Assets For BNSF Railway Company and Union Pacific Railroad Butte Priority Soils Operable Unit, Kennedy Jenks

Butte Priority Soils Operable Unit (BPSOU) 2022 Final Insufficiently Reclaimed Sites Quality Assurance Project Plan (QAPP) and 2022 Final Unreclaimed Sites QAPP Request for Change, Mike McAnulty

Butte Priority Soils Operable Unit (BPSOU) Draft Final Insufficiently Reclaimed Sites – Field Sampling Plan (FSP) BRES No. 134 – Star West Dump, Mike McAnulty

Butte Priority Soils Operable Unit (BPSOU) Draft Final Insufficiently Reclaimed Sites – Field Sampling Plan (FSP) BRES No. 174 – Buffalo South and BRES No 174 – Buffalo Ditch, Mike McAnulty

Butte Priority Soils Operable Unit (BPSOU) Draft Final Insufficiently Reclaimed Sites – Field Sampling Plan (FSP) BRES No. 17 – Paymaster, Mike McAnulty

Butte Priority Soils Operable Unit (BPSOU) Draft Final Insufficiently Reclaimed Sites – Field Sampling Plan (FSP) BRES No. 31 – Waste Dump #5, Mike McAnulty

Butte Priority Soils Operable Unit (BPSOU) Draft Final Insufficiently Reclaimed Sites – Field Sampling Plan (FSP) BRES No. 48 – Old Glory West, Mike McAnulty

Butte Priority Soils Operable Unit (BPSOU) Draft Final Insufficiently Reclaimed Sites – Field Sampling Plan (FSP) BRES No. 66 – West Ruby Dump, Mike McAnulty

Butte Priority Soils Operable Unit (BPSOU) Draft Final Insufficiently Reclaimed Sites – Field Sampling Plan (FSP) BRES No. 84 – Mandan Park Play Area, Mike McAnulty

Butte Priority Soils Operable Unit (BPSOU) Draft Final Insufficiently Reclaimed Sites Field Sampling Plan (FSP) for UR-19 – Butte, Anaconda & Pacific Railway from Montana Street to South Arizona Avenue – Montana Street Adjacent Parcel, Mike McAnulty

Butte Priority Soils Operable Unit (BPSOU) Draft Final Unreclaimed Sites – Field Sampling Plan (FSP) UR 42 – Area near Walkerville Playground, Mike McAnulty

Butte Priority Soils Operable Unit (BPSOU) Draft Final Unreclaimed Sites – Field Sampling Plan (FSP) UR 43 – Area near Missoula Gulch Ball Field, Mike McAnulty

Butte Priority Soils Operable Unit (BPSOU) Final Insufficiently Reclaimed (IR) Sites Field Sampling and Investigation Plan (FSP) Butte Remediation Evaluation System (BRES) No.174 – Buffalo Ditch, Mike McAnulty

Butte Priority Soils Operable Unit (BPSOU) Final Insufficiently Reclaimed (IR) Sites Field Sampling and Investigation Plan (FSP) Butte Remediation Evaluation System (BRES) No. 66 – West Ruby Dump, Mike McAnulty

Butte Priority Soils Operable Unit (BPSOU) Final Insufficiently Reclaimed (IR) Sites Field Sampling Plan (FSP) BRES No. 134 – Star West Dump, Mike McAnulty

Butte Priority Soils Operable Unit (BPSOU) Final Insufficiently Reclaimed (IR) Sites Field Sampling Plan (FSP) BRES No. 17 – Paymaster, Mike McAnulty

Butte Priority Soils Operable Unit (BPSOU) Final Insufficiently Reclaimed (IR) Sites Field Sampling Plan (FSP) BRES No. 48 – Old Glory West, Mike McAnulty

Butte Priority Soils Operable Unit (BPSOU) Final Insufficiently Reclaimed (IR) Sites – Field Sampling Plan (FSP) Butte Remediation Evaluation System (BRES) No. 31 Waste Dump #5, Mike McAnulty

Butte Priority Soils Operable Unit (BPSOU) Final Insufficiently Reclaimed Sites – Field Sampling Plan (FSP) BRES No. 84 – Mandan Park Play Area, Mike McAnulty

Butte Priority Soils Operable Unit (BPSOU) Final Unreclaimed Sites – Field Sampling Plan (FSP) UR 42 – Area near Walkerville Playground, Mike McAnulty

Butte Priority Soils Operable Unit (BPSOU) Final Unreclaimed Sites – Field Sampling Plan (FSP) UR 43 – Area near Missoula Gulch Ballfield, Mike McAnulty

Butte Priority Soils Operable Unit (BPSOU) New and Mahoney Remedial Action Work Plan (RAWP) Request for Change, Mike McAnulty

Butte Priority Soils Operable Unit (BPSOU) Unreclaimed and Insufficiently Reclaimed Sites Request for Change 2023-01, Mike McAnulty

Butte Priority Soils Operable Unit (BPSOU) Unreclaimed and Insufficiently Reclaimed Sites Request for Change 2023-02, Mike McAnulty

Comment Letter: BPSOU Uncontrolled Surface Flow Areas RDWP/PDIWP, dated November 8, 2023, Mike McAnulty

Final Butte Priority Soils Operable Unit (BPSOU) 2021 Insufficiently Reclaimed Sites Sampling Clark Mill Tailings (BRES No. 154) Site Evaluation Summary Report, Mike McAnulty

Medical Monitoring Working Group Meeting Minutes, Mike McAnulty

Medical Monitoring Working Group Meeting Minutes, Mike McAnulty

Butte Priority Soils Operable Unit (BPSOU) Field XRF to Laboratory Correlation and Regression Analysis Procedure for Unreclaimed (UR) and Insufficiently Reclaimed (IR) Sites, Mike McAnulty and Pioneer Technical Services, Inc.

Draft Final 2023 Butte Priority Soils Operable Unit (BPSOU) Borrow Amendment Work Plan, Mike McAnulty and Pioneer Technical Services, Inc.

MONTANA BUREAU OF MINES AND GEOLOGY BUTTE ALLUVIAL AND BEDROCK CONTROLLED GROUNDWATER AREA MONITORING 2022 DATA SUMMARY REPORT, Montana Bureau of Mines and Geology

2022 Final Insufficiently Reclaimed Sites Quality Assurance Project Plan (QAPP) Revision 2, Pioneer Technical Services, Inc.

2022 Final Unreclaimed Sites Quality Assurance Project Plan (QAPP) Revision 1, Pioneer Technical Services, Inc.

2023 Draft Final Insufficiently Reclaimed Sites Quality Assurance Project Plan (QAPP), Pioneer Technical Services, Inc.

2023 Draft Final Unreclaimed Sites Quality Assurance Project Plan (QAPP), Pioneer Technical Services, Inc.

2023 Final Butte Reduction Works (BRW) Smelter Area Mine Waste Remediation and Contaminated Groundwater Hydraulic Control Site Organic Pollutant Surface Water Sampling Quality Assurance Project Plan (QAPP), Pioneer Technical Services, Inc.

2023 Final Butte Reduction Works (BRW) Smelter Area Mine Waste Remediation and Contaminated Groundwater Hydraulic Control Site Organic Pollutant Surface Water Sampling Quality Assurance Project Plan (QAPP), Pioneer Technical Services, Inc.

2023 Final Insufficiently Reclaimed Sites Quality Assurance Project Plan (QAPP), Pioneer Technical Services, Inc.

2023 Final Unreclaimed Sites Quality Assurance Project Plan (QAPP), Pioneer Technical Services, Inc.

Butte Priority Soils Operable Unit - Final Solid Media Management Program Plan, Pioneer Technical Services, Inc.

Butte Reduction Works (BRW) Smelter Area Mine Waste Remediation and Contaminated Groundwater Hydraulic Control Site Quality Assurance Project Plan (QAPP) for Microbial Analysis and Biotreatability; Request for Change BRW-2023-02, Pioneer Technical Services, Inc.

Draft Final 2022 Insufficiently Reclaimed Sites Sampling BRES No. 08 – Belle of Butte Site Evaluation Summary Report, Pioneer Technical Services, Inc.

Draft Final 2023 Butte Priority Soils Operable Unit Helehan Borrow Submittal #1, Pioneer Technical Services, Inc.

Draft Final 2023 Butte Priority Soils Operable Unit Type B Borrow Material Submittal #1, Pioneer Technical Services, Inc.

Draft Final 2023 Butte Priority Soils Operable Unit Type B Borrow Material Submittal #1, Pioneer Technical Services, Inc.

Draft Final 2023 Butte Priority Soils Operable Unit Type B Borrow Material Submittal #1, Pioneer Technical Services, Inc.

Draft Final 2023 Residential Metals Abatement Program (RMAP) Borrow Amendment Work Plan, Pioneer Technical Services, Inc.

Draft Final 2023 Residential Metals Abatement Program (RMAP) BRW/Belgrade Borrow Submittal, Pioneer Technical Services, Inc.

Draft Final 2023 Residential Metals Abatement Program (RMAP) BRW/Belgrade Borrow Submittal, Pioneer Technical Services, Inc.

Draft Final 2023 Residential Metals Abatement Program (RMAP) Clark Park Soil Remedial Action Work Plan (RAWP), Pioneer Technical Services, Inc.

Draft Final 2023 Residential Metals Abatement Program (RMAP) Copper/Emmett Park Soil Remedial Action Work Plan (RAWP), Pioneer Technical Services, Inc.

Draft Final 2023 Residential Metals Abatement Program (RMAP) Gold Hill Lutheran Church (containing the Creativity Factory Preschool) Soil Remedial Action Work Plan (RAWP), Pioneer Technical Services, Inc.

Draft Final 2023 Residential Metals Abatement Program (RMAP) Park Soil Sampling Field Sampling Plan (FSP) Submittal #10 [Original Mine Yard], Pioneer Technical Services, Inc.

Draft Final 2023 Residential Metals Abatement Program (RMAP) Park Soil Sampling Field Sampling Plan (FSP) Submittal #11 (Version 2) [Montana Technological University (North Campus)], Pioneer Technical Services, Inc.

Draft Final 2023 Residential Metals Abatement Program (RMAP) Park Soil Sampling Field Sampling Plan (FSP) Submittal #12 [Aldersgate United Methodist Church], Pioneer Technical Services, Inc.

Draft Final 2023 Residential Metals Abatement Program (RMAP) Park Soil Sampling Field Sampling Plan (FSP) Submittal #7 [Gold Hill Lutheran Church, Peoples Park, Sioux Park, Charlie Judd Park, Emma Park, Mandan Park, and Walkerville Park (Daly and Dunn)], Pioneer Technical Services, Inc.

Draft Final 2023 Residential Metals Abatement Program (RMAP) Park Soil Sampling Field Sampling Plan (FSP) Submittal #8 [Ramsay Skating Rink, Skyline Park, Butte Vigilante Saddle Club, Butte Country Club, Fairmont Hot Springs, Silver Bow Homes Park, Gloria Dei Lutheran Church, and United Congregational Church)], Pioneer Technical Services, Inc.

Draft Final 2023 Residential Metals Abatement Program (RMAP) Park Soil Sampling Field Sampling Plan (FSP) Submittal #9 [Centerville Skating Rink, Belmont Senior Citizens Center, High Altitude Skating Rink, Missoula Gulch Ballfield Play Area, MAC Facilities, Butte Family YMCA, Church of Christ, and Montana Tech South Campus], Pioneer Technical Services, Inc.

Draft Final 2023 Residential Metals Abatement Program (RMAP) Peoples Park Soil Remedial Action Work Plan (RAWP), Pioneer Technical Services, Inc.

|Draft Final 2023 Residential Metals Abatement Program (RMAP) Quality Assurance Project Plan (QAPP) Annual Update (Non-Residential Parcels), Pioneer Technical Services, Inc.

Draft Final 2023 Residential Metals Abatement Program (RMAP) Racetrack Borrow Submittal, Pioneer Technical Services, Inc.

Draft Final 2023 Residential Metals Abatement Program (RMAP) Racetrack Borrow Submittal, Pioneer Technical Services, Inc.

Draft Final 2023 Residential Metals Abatement Program (RMAP) Rocker Park Soil Remedial Action Work Plan (RAWP), Pioneer Technical Services, Inc.

Draft Final 2023 Residential Metals Abatement Program (RMAP) School Soil Sampling Field Sampling Plan (FSP) Submittal #11 [Montana Technological University (North Campus)], Pioneer Technical Services, Inc.

Draft Final 2023 Residential Metals Abatement Program (RMAP) Stodden Park Soil Remedial Action Work Plan (RAWP), Pioneer Technical Services, Inc.

Draft Final 2023 Residential Metals Abatement Program (RMAP) Walkerville Park (Alley of North Main and Alley of West Daly) Soil Remedial Action Work Plan (RAWP), Pioneer Technical Services, Inc.

Draft Final 2023 Residential Metals Abatement Program (RMAP) Walkerville Park (Walkerville Drive and Ryan Road) Soil Remedial Action Work Plan (RAWP), Pioneer Technical Services, Inc.

Draft Final 2023 Residential Metals Abatement Program (RMAP) Whitehall Borrow Submittal, Pioneer Technical Services, Inc.

Draft Final 2023 Residential Metals Abatement Program (RMAP) Whitehall Borrow Submittal, Pioneer Technical Services, Inc.

Draft Final 2023 Residential Metals Abatement Program (RMAP) Whitehall Borrow Submittal, Pioneer Technical Services, Inc.

Draft Final 2023 RMAP Baptist Student Union (former McKinley School) Soil Remedial Action Work Plan (RAWP), Pioneer Technical Services, Inc.

Draft Final Annual Operations and Maintenance (O&M) Report Butte Treatment Lagoon (BTL) System – 2022, Pioneer Technical Services, Inc.

Draft Final BPSOU Unreclaimed Sites UR-06 Temporary Best Management Practice Work Plan, Pioneer Technical Services, Inc.

Draft Final Butte Priority Soils Operable Unit (BPSOU) Insufficiently Reclaimed (IR) Sites Colorado Dump – West Lot Construction Completion Report (CCR), Pioneer Technical Services, Inc.

Draft Final Butte Priority Soils Operable Unit (BPSOU) Unreclaimed (UR) Sites UR-35 Remedial Action Work Plan (RAWP), Pioneer Technical Services, Inc.

Draft Final Butte Treatment Lagoons (BTL) Groundwater Treatment System Routine Operations, Maintenance, and Monitoring (OM&M) Plan, Pioneer Technical Services, Inc.

Draft Final Quarterly Operations and Maintenance Report Butte Treatment Lagoon System – First Quarter 2023, Pioneer Technical Services, Inc.

Draft Final Quarterly Operations and Maintenance Report Butte Treatment Lagoon System – Fourth Quarter 2022, Pioneer Technical Services, Inc.

Draft Final Quarterly Operations and Maintenance Report Butte Treatment Lagoon System – Second Quarter 2023, Pioneer Technical Services, Inc.

Draft Final Quarterly Operations and Maintenance Report Butte Treatment Lagoon System – Second Quarter 2023, Pioneer Technical Services, Inc.

Draft Final Revised Residential Metals Abatement Program (RMAP) Quality Assurance Project Plan (QAPP) (Residential Parcels), Pioneer Technical Services, Inc.

Final 2021 Insufficiently Reclaimed Sites Sampling BRES No. 104 Site Evaluation Summary Report, Pioneer Technical Services, Inc.

Final 2021 Insufficiently Reclaimed Sites Sampling BRES No. 154 Site Evaluation Summary Report, Pioneer Technical Services, Inc.

Final 2021 Unreclaimed Sites Sampling UR-01 Site Evaluation Summary Report, Pioneer Technical Services, Inc.

Final 2021 Unreclaimed Sites Sampling UR-03 Site Evaluation Summary Report, Pioneer Technical Services, Inc.

Final 2021 Unreclaimed Sites Sampling UR-05 Site Evaluation Summary Report, Pioneer Technical Services, Inc.

Final 2021 Unreclaimed Sites Sampling UR-24 Site Evaluation Summary Report, Pioneer Technical Services, Inc.

Final 2021 Unreclaimed Sites Sampling UR-30 Site Evaluation Summary Report, Pioneer Technical Services, Inc.