Prepared By:

Atlantic Richfield Company

Document Type

Government Report

Publication Date

Spring 5-10-2023

Subject Area



This request for change (RFC) 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) (Atlantic Richfield Company, 2022) (Phase III QAPP) provides the procedures and protocols necessary for Atlantic Richfield Company (Atlantic Richfield) to install additional boreholes and collect additional geotechnical data to meet a data quality objective specified in the Phase III QAPP and provide the necessary information to support design and construction of the proposed bridge replacement (North Bridge) that will span the Silver Bow Creek channel on the north side of the site (Figure 1).

Creative Commons License

Creative Commons Attribution 4.0 International License
This work is licensed under a Creative Commons Attribution 4.0 International License.