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Silver Bow Creek/Butte Area Superfund Site

Submissions from 2023 2023

Remedial Action Work Plan - East Middle School, Environmental Protection Agency

Residential Metals Abatement Program Investigation Summary Report (Non-Residential Parcels – Indoor Dust) Butte High School, Environmental Protection Agency

Residential Metals Abatement Program Investigation Summary Report (Non-Residential Parcels – Indoor Dust) Silver Bow Montessori School, Environmental Protection Agency

2023 Residential Metals Abatement Program (RMAP) Field Sampling Plan (FSP) – Indoor Dust – Group 9 - Montana Technological University (Prospector Residence Hall), Environmental Resource Management (ERM)

2023 Residential Metals Abatement Program (RMAP) Field Sampling Plan (FSP) – Interior Soils - Silver Bow Montessori, Environmental Resource Management (ERM)

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

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

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

Draft - Residential Metals Abatement Program Investigation Summary Report (Non-Residential Parcels – Indoor Dust) Monroe Head Start Preschool, Environmental Resource Management (ERM)

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

Residential Metals Abatement Program – Interior School Dust – Remedial Action Work Plan – East Middle School, Environmental Resource Management (ERM)

Residential Metals Abatement Program Investigation Summary Report (Non-Residential Parcels – Indoor Dust) - Aware Early Head Start, Environmental Resource Management (ERM)

Residential Metals Abatement Program Investigation Summary Report (Non-Residential Parcels – Indoor Dust) - Aware Early Head Start, Environmental Resource Management (ERM)

Residential Metals Abatement Program Investigation Summary Report (Non-Residential Parcels – Indoor Dust) - Aware Early Head Start, Environmental Resource Management (ERM)

Residential Metals Abatement Program Investigation Summary Report (Non-Residential Parcels – Indoor Dust) Aware Early Head Start, Environmental Resource Management (ERM)

Residential Metals Abatement Program Investigation Summary Report (Non-Residential Parcels – Indoor Dust) Aware Early Head Start, Environmental Resource Management (ERM)

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Residential Metals Abatement Program Investigation Summary Report (Non-Residential Parcels – Indoor Dust) - Lincoln Head Start, Environmental Resource Management (ERM)

Residential Metals Abatement Program Investigation Summary Report (Non-Residential Parcels – Indoor Dust) Lincoln Head Start, Environmental Resource Management (ERM)

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

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

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

Residential Metals Abatement Program Investigation Summary Report (Non-Residential Parcels – Indoor Dust) - Monroe Head Start Preschool, Environmental Resource Management (ERM)

Residential Metals Abatement Program Investigation Summary Report (Non-Residential Parcels – Indoor Dust) Monroe Head Start Preschool, Environmental Resource Management (ERM)

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

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

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

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

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

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

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

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

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

Residential Metals Abatement Program Investigation Summary Report (Non-Residential Parcels – Indoor Soil) - Silver Bow Montessori, Environmental Resource Management (ERM)

2021 RMAP NON-RESIDENTIAL PARCELS DATA SUMMARY REPORT SILVER BOW CREEK/BUTTE AREA NPL SITE BPSOU, Environmental Standards, Inc. and Pioneer Technical Services, Inc.

Final Revised Residential Metals Abatement Program (RMAP) (Non-Residential Parcels) 2021 DATA SUMMARY REPORT (DSR), Environmental Standards, Inc. and Pioneer Technical Services, Inc.

Approval for the Butte Priority Soils Operable Unit (BPSOU) 2023 Residential Metals Abatement Program Stodden Park Soil Remedial Action Work Plan (RAWP) (dated August 8, 2023), Nikia Greene

Approval letter for the Butte Priority Soils Operable Unit (BPSOU) Draft Final Residential Metals Abatement Program (RMAP) Park Field Sampling Plan (FSP) Submittal #11 [Covering Montana Technological University – North Campus] (dated July 23, 2023), Nikia Greene

Approval letter for the Butte Priority Soils Operable Unit (BPSOU) Draft Final Residential Metals Abatement Program (RMAP) Park Soil Sampling Field Sampling Plan (FSP) Submittal #12 [Covering Aldersgate United Methodist Church] (dated July 31, 2023), Nikia Greene

Approval Letter for the Butte Priority Soils Operable Unit (BPSOU) Final Pre-design Investigation Work Plan Blacktail Creek Riparian Actions, (dated August 14, 2023), Nikia Greene

Butte Priority Soils Operable Unit (BPSOU) Final 2022 Insufficiently Reclaimed Sites Quality Assurance Project Plan (QAPP) Corrective Action Report, Nikia Greene

Comment Letter Butte Priority Soils Operable Unit (BPSOU) Grove Gulch Sedimentation Bay 95% Remedial Design (dated September 22, 2023), Nikia Greene

Comments for the Draft Residential Metals Abatement Program – Interior School Dust – Investigation Summary Report – Butte Central Elementary and Middle School (April 12, 2023), Nikia Greene

Comments for the Draft Residential Metals Abatement Program – Interior School Dust – Investigation Summary Report – Butte Central High School (April 12, 2023), Nikia Greene

Comments for the Draft Residential Metals Abatement Program – Interior School Dust – Investigation Summary Report – Butte High School (April 12, 2023), Nikia Greene

Comments for the Draft Residential Metals Abatement Program – Interior School Dust – Investigation Summary Report – Emerson Elementary (May 22, 2023), Nikia Greene

Comments for the Draft Residential Metals Abatement Program – Interior School Dust – Investigation Summary Report – Former Hawthorne School (April 12, 2023), Nikia Greene

Comments for the Draft Residential Metals Abatement Program – Interior School Dust – Investigation Summary Report – Hillcrest Elementary (April 12, 2023), Nikia Greene

Comments for the Draft Residential Metals Abatement Program – Interior School Dust – Investigation Summary Report – Margaret Leary Elementary (April 12, 2023), Nikia Greene

Comments for the Draft Residential Metals Abatement Program – Interior School Dust – Investigation Summary Report – Monroe Head Start (April 12, 2023), Nikia Greene

Comments for the Draft Residential Metals Abatement Program – Interior School Dust – Investigation Summary Report – Ramsay Elementary_Rev1 (April 26, 2023), Nikia Greene

Comments for the Draft Residential Metals Abatement Program – Interior School Dust – Investigation Summary Report – West Elementary School (May 22, 2023), Nikia Greene

Comments for the Draft Residential Metals Abatement Program – Interior School Dust – Investigation Summary Report – Whittier Elementary (April 13, 2023), Nikia Greene

Draft BPSOU Uncontrolled Surface Flow Area Soil Characterization Quality Assurance Project Plan (QAPP), Nikia Greene

Re: Approval for the Request for Change BG-2023-01 to Final BPSOU Hydrocarbon Sampling and Treatability Study, Quality Assurance Project Plan (QAPP) (dated May 15, 2023), Nikia Greene

Re: Approval letter for the Butte Priority Soils Operable Unit (BPSOU) 2023 Residential Metals Abatement Program Baptist Student Union Soil Remedial Action Work Plan (RAWP) (dated August 8, 2023), Nikia Greene

Re: Approval letter for the Butte Priority Soils Operable Unit (BPSOU) 2023 Residential Metals Abatement Program Gold Hill Lutheran Church (containing the Creativity Factory Preschool) Soil Remedial Action Work Plan (RAWP) (dated August 8, 2023), Nikia Greene

Re: Approval letter for the Butte Priority Soils Operable Unit (BPSOU) Draft Final Insufficiently Reclaimed Sites – Field Sampling Plan (FSP) BRES No. 134 – Star West Dump (dated July 25, 2023), Nikia Greene

Re: Approval letter for the Butte Priority Soils Operable Unit (BPSOU) Draft Final Insufficiently Reclaimed Sites – Field Sampling Plan (FSP) BRES No. 174 – Buffalo Ditch (dated July 25, 2023), Nikia Greene

Re: Approval letter for the Butte Priority Soils Operable Unit (BPSOU) Draft Final Insufficiently Reclaimed Sites – Field Sampling Plan (FSP) BRES No. 17 – Paymaster (dated July 25, 2023), Nikia Greene

Re: Approval letter for the Butte Priority Soils Operable Unit (BPSOU) Draft Final Insufficiently Reclaimed Sites – Field Sampling Plan (FSP) BRES No. 31 – Waste Dump #5 (dated July 25, 2023), Nikia Greene

Re: Approval letter for the Butte Priority Soils Operable Unit (BPSOU) Draft Final Insufficiently Reclaimed Sites – Field Sampling Plan (FSP) BRES No. 48 – Old Glory West (dated July 25, 2023), Nikia Greene

Re: Approval letter for the Butte Priority Soils Operable Unit (BPSOU) Draft Final Insufficiently Reclaimed Sites – Field Sampling Plan (FSP) BRES No. 66 – West Ruby Dump (dated July 25, 2023), Nikia Greene

Re: Approval letter for the Butte Priority Soils Operable Unit (BPSOU) Draft Final Insufficiently Reclaimed Sites – Field Sampling Plan (FSP) BRES No. 84 – Mandan Park Play Area (dated July 31, 2023), Nikia Greene

Re: Approval letter for the Butte Priority Soils Operable Unit (BPSOU) Draft Final Residential Metals Abatement Program (RMAP) Park Field Sampling Plan (FSP) Submittal #9 [Covering 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] (dated June 22, 2023), Nikia Greene

Re: Approval letter for the Butte Priority Soils Operable Unit (BPSOU) Residential Metals Abatement Program (RMAP) Field Sampling Plan (FSP) – Indoor Dust – Group 8 (Covering Goldhill Lutheran Church [Creativity Factory Preschool] and United Congregational [Crayon Academy Preschool]) (dated June 30, 2023), Nikia Greene

Re: Approval letter for the Butte Priority Soils Operable Unit (BPSOU) Residential Metals Abatement Program (RMAP) Peoples Park Soil Remedial Action Work Plan (dated November 2, 2023), Nikia Greene

Re: 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

Re: Approval letter for the Butte Priority Soils Operable Unit, Superfund Stormwater Operation and Maintenance (O&M); Mountain Con SW Channel Diversion, Request for Change (RFC)-BSB Sitewide-2023-001 (dated June 29, 2023), Nikia Greene

Re: 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

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: 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