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Silver Bow Creek/Butte Area Superfund Site

Submissions from 2023 2023

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.

2023 Draft Final Butte Priority Soils Operable Unit (BPSOU) Interim Site-Wide Groundwater Monitoring Quality Assurance Project Plan (QAPP) (dated November 29, 2022), Nikia Greene

2023 Draft Final Butte Priority Soils Operable Unit (BPSOU) Interim Site-Wide Surface Water Monitoring Quality Assurance Project Plan (QAPP) (dated November 30, 2022), Nikia Greene

Approval for: Discharge System 2022 Annual Operations and Maintenance Report, Berkeley Pit and Discharge Pilot Project, dated May 26, 2023, Nikia Greene

Approval for Draft Final 2022 Annual Monitoring Report for the Rocker Timber Framing and Treating Plant Operable Unit; dated April 6, 2023, Nikia Greene

Approval for: Draft Final Fourth Quarter 2022, Operations & Maintenance Monitoring Report for the Rocker Timber Framing and Treating Plant Operable Unit; dated January 10, 2023., Nikia Greene

Approval for Quality Assurance Project Plan, 2023, Butte Mine Flooding Operable Unit and Butte Priority Soils Operable Unit, Private Well Monitoring Program, dated November 2022, Nikia Greene

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 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 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

Approval letter for: Butte Priority Soils Operable Unit (BPSOU) Revised Draft Final Quarterly Operations and Maintenance Report Butte Treatment Lagoons System – First Quarter 2021 (dated March 22, 2023), Nikia Greene

Approval letter for: Butte Priority Soils Operable Unit (BPSOU) Revised Draft Final Quarterly Operations and Maintenance Report Butte Treatment Lagoons System – Fourth Quarter 2021 (dated March 22, 2023), Nikia Greene

Approval letter for: Draft 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) (dated March 31, 2023), Nikia Greene

Approval letter for: Final Butte Priority Soils Operable Unit, 2021 Unreclaimed Sites Sampling UR-03 Site Evaluation Summary Report (February 7, 2023), Nikia Greene

Approval letter for: Final Butte Priority Soils Operable Unit, 2021 Unreclaimed Sites Sampling UR-35 Site Evaluation Summary Report (February 7, 2023), Nikia Greene

Approval letter for: Final Butte Priority Soils Operable Unit, 2021 Unreclaimed Sites Sampling UR-36 Site Evaluation Summary Report (February 7, 2023), Nikia Greene

Approval letter for the Butte Priority Soils Operable Unit, 2021 Unreclaimed Site Sampling – Revised Clark Mill Tailings East (UR-40) Site Evaluation Summary Report (March 28, 2023), Nikia Greene

Approval letter for the 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 (dated April 13, 2023), Nikia Greene

Approval letter for the 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 (dated April 13, 2023), Nikia Greene

Approval letter for the Butte Priority Soils Operable Unit (BPSOU) 2022 Residential Metals Abatement Program (Non-Residential Parcels-Indoor Soil) Butte High School Indoor Soils Investigation Summary Report (ISR) (dated August 7, 2023), Nikia Greene

Approval letter for the Butte Priority Soils Operable Unit (BPSOU) 2022 Subdrain Data Summary Report Plan (DSR) (July 7, 2023), Nikia Greene

Approval letter for the Butte Priority Soils Operable Unit (BPSOU) 2023 Draft Final Residential Metals Abatement Program (RMAP), Quality Assurance Project Plan (QAPP), Non-Residential Parcels (dated June 7, 2023), Nikia Greene

Approval letter for the Butte Priority Soils Operable Unit (BPSOU) 2023 Draft Final Unreclaimed Sites Quality Assurance Project Plan (QAPP) (dated May 05, 2023), Nikia Greene

Approval letter for the Butte Priority Soils Operable Unit (BPSOU) 2023 Final Unreclaimed Sites Quality Assurance Project Plan and BPSOU 2023 Final Insufficiently Reclaimed Sites Quality Assurance Project Plan; RFC 2023-02 (dated September 18, 2023), Nikia Greene

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

Approval letter for the Butte Priority Soils Operable Unit (BPSOU) 2023 Residential Metals Abatement Program Borrow Amendment Work Plan (WP) (dated August 25, 2023), Nikia Greene

Approval letter for the Butte Priority Soils Operable Unit (BPSOU) 2023 Residential Metals Abatement Program Copper/Emmett Park Soil Remedial Action Work Plan (RAWP) (dated May 17, 2023), Nikia Greene

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

Approval letter for the Butte Priority Soils Operable Unit (BPSOU) 2023 Residential Metals Abatement Program (RMAP) Field Sampling Plan (FSP) – Indoor Dust – Group 9 - Montana Technological University (Prospector Residence Hall) (dated September 25, 2023), Nikia Greene

Approval letter for the Butte Priority Soils Operable Unit (BPSOU) Buffalo Gulch Forebay Parcel 2023 Expedited Well Abandonment Plan (dated August 21, 2023, Nikia Greene

Approval letter for the Butte Priority Soils Operable Unit (BPSOU) Buffalo Gulch Request for Change (RFC)-2023-04 (dated October 4, 2023) to the Final Buffalo Gulch Soil Characterization Sampling and Analysis Plan (dated October 18, 2018), Nikia Greene

Approval Letter for the Butte Priority Soils Operable Unit (BPSOU) Butte Reclamation Evaluation System (BRES) Draft 2021 Corrective Action Plans for Reclaimed Sites (dated November 2, 2022), Nikia Greene

Approval letter for the Butte Priority Soils Operable Unit (BPSOU) Clark Tailings Consolidated Waste Management Area (CTCWMA) Quality Assurance Project Plan (QAPP) (dated July 31, 2023), Nikia Greene

Approval letter for the Butte Priority Soils Operable Unit (BPSOU) Draft Final 2023 Residential Metals Abatement Program Borrow Amendment Work Plan (dated January 12, 2023), Nikia Greene

Approval letter for the Butte Priority Soils Operable Unit (BPSOU) Draft Final 2023 Residential Metals Abatement Program (RMAP) Racetrack Borrow Submittal (dated May 26, 2023), Nikia Greene

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

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

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

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

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

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

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

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 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 Field Sampling Plan (FSP) Submittal #7 [Covering Gold Hill Lutheran Church, Peoples Park, Sioux Park, Charlie Judd Park, Emma Park, Mandan Park, and Walkerville Park (Daly and Dun)] (dated April 14, 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 #8 [Covering 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] (dated April 28, 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 #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

Approval letter for the Butte Priority Soils Operable Unit (BPSOU) Draft Final Residential Metals Abatement Program (RMAP) Park Soil Field Sampling Plan (FSP) Submittal #10 [Covering Original Mine Yard] (dated July 14, 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) 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) Draft Final Unreclaimed Sites – Field Sampling Plan (FSP) UR-42 – Area near Walkerville Playground (dated August 18, 2023), Nikia Greene

Approval letter for the Butte Priority Soils Operable Unit (BPSOU) Draft Final Unreclaimed Sites – Field Sampling Plan (FSP) UR-43 – Area near Missoula Gulch Ball Field (dated August 18, 2023), Nikia Greene

Approval letter for the Butte Priority Soils Operable Unit (BPSOU) Final 2018 Unreclaimed Sites Sampling – Bonanza (UR-09) Site Evaluation Summary Report. (dated November 14, 2022), 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

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

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

Approval letter for the Butte Priority Soils Operable Unit (BPSOU) Residential Metals Abatement Program – Interior School Dust - Remedial Action Work Plan (RAWP) – East Middle School (dated December 8, 2022), Nikia Greene

Approval letter for the Butte Priority Soils Operable Unit (BPSOU) Residential Metals Abatement Program (RMAP) Field Sampling Plan (FSP) – Interior Soils – Silver Bow Montessori (dated June 5, 2023), Nikia Greene

Approval letter for the Butte Priority Soils Operable Unit, Draft Final Unreclaimed Sites (UR-06) Temporary Best Management Practice (BMP) Work Plan (May 15, 2023), Nikia Greene

Approval letter for the Butte Priority Soils Operable Unit, Final 2021 Unreclaimed Sites Sampling UR-30 Site Evaluation Summary Report (dated April 20, 2023), Nikia Greene

Approval letter for the Butte Priority Soils Operable Unit, Final 2021 Unreclaimed Sites Sampling UR-32 Site Evaluation Summary Report (dated June 9, 2023), Nikia Greene

Approval letter for the Butte Priority Soils Operable Unit, Final 2022 Insufficiently reclaimed Sites Quality Assurance Project Plan (QAPP) Corrective Action Report (February 22, 2023), Nikia Greene

Approval letter for the Butte Priority Soils Operable Unit, Residential Metals Abatement Program (Non-Residential Parcels) 2021 Data Summary Report (March 31, 2023), Nikia Greene

Approval letter for the Draft Final 2023 Residential Metals Abatement Program (RMAP) Rocker Park Soil Remedial Action Work Plan (RAWP) (dated January 23, 2023), Nikia Greene

Approval letter for the Draft Final Butte Priority Soils Operable Unit (BPSOU) Insufficiently Reclaimed (IR) Sites Colorado Dump – West Lot Construction Completion Report (dated April 10, 2023), Nikia Greene

Approval letter for the Draft Final Residential Metals Abatement Program (RMAP) 2023 Walkerville Park (Walkerville Drive and Ryan Road) Soil Remedial Action Work Plan (RAWP) (dated April 24, 2023), Nikia Greene

Approval letter for the Final Butte Priority Soils Operable Unit, 2021 Unreclaimed Sites Sampling UR-05 Site Evaluation Summary Report (February 7, 2023), Nikia Greene

Approval letter for the Final Butte Priority Soils Operable Unit, 2021 Unreclaimed Sites Sampling UR-38 Site Evaluation Summary Report (February 7, 2023), Nikia Greene

Approval letter for the Final Butte Priority Soils Operable Unit (BPSOU) 2021 Unreclaimed Sites Sampling – Minnie Irvine (UR-01) Site Evaluation Summary Report (dated November 14, 2022), Nikia Greene

Approval letter for the Request for Change (RFC) to the Butte Priority Soils Operable Unit (BPSOU) Request for Change (RFC)-BRW-2023-01 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 May 10, 2023)., Nikia Greene