Butterfield Creek: Natural Resource Damage (NRD) Three-Party Agreement:
Kennecott Utah Copper LLC

Completion of the Kennecott South Zone Five Year Review for Operable Units 3, 6, 7, 17 and 18

The Utah Department of Environmental Quality, Division of Environmental Response and Remediation (UDEQ/DERR), in cooperation with the U.S. Environmental Protection Agency Region VIII (EPA), has conducted a Five Year Review of the Kennecott South Zone Superfund Site—Operable Units 3, 6, 7, 17, and 18.

• Operable Unit No. 3 includes soils, waste rock, and tailings in the areas of Butterfield Creek, Butterfield Canyon, and Butterfield Mine.
• Operable Unit No. 6 includes soils, waste rock, and tailings in the areas of the Lark Waste Rock and Tailings sites.
• Operable Unit No. 7 includes soils and sludges in the area of the South Jordan Evaporation Ponds.
• Operable Unit No. 17 includes soils in the area of the Bastian Sink site.
• Operable Unit No. 18 includes mine drainage and waste rock associated with the western side of the Oquirrh Mountains in Tooele County.

The purpose of a five-year review is to determine whether or not the cleanup and other actions taken at the site are protective of human health and the environment. Overall, the review found the remedies are adequately protective of human health and the environment, and exposure pathways that could result in unacceptable risk are being controlled (based upon current land use). The review does identify recommendations regarding future development for areas within the operable units covered by this review.

During this Review, UDEQ/DERR examined current information and conducted a site inspection and community interviews to evaluate all remedy components. The report summarizing the results is provided in the list of documents below.

If you would like more information about the review, please contact:

Doug Bacon, UDEQ Project Manager: (801) 536-4282

Dave Allison, UDEQ Community Involvement: (801) 536-4479

Report Contents

• Letter of Draft Final Report
  To Rebecca Thomas, Remedial Project Manager, Kennecott South and North Zones
• Final Report: First Five Year Review Report, Kennecott South Zone
• Appendix A: Five Year Review: Community Interviews
  Summary, Individual Interview Logs, and Announcement Advertisement
• Appendix B: Communiques with the Division of Water Quality
  UPDES, Stormwater, and Groundwater Protection Programs Pertaining to Permit Compliance
• Appendix C: Communique from Kennecott Utah Copper Corporation
  With Attached Final Compliance Monitoring Reports fro Butterfield Creek
• Appendix D: DERR Yosemite Release Inspection Report
• Appendix E: September 2002 ROD Federal and State ARARs for North End Remediation
• Appendix F: Butterfield Creek, Canyon, and Confluence Areas
  • Butterfield Creek Post Removal ST Rest
  • Butterfield Creek Post Removal Yosemite
  • Butterfield Creek Queen and Blackjack
  • Butterfield Creek Waste Rock Post Removal
• Appendix G: Lark Waste Rock and Tailings Areas
  • Lark Tailing Prior to Capping Characterization
    • Lark Tailings Prior to Capping Data #1
    • Lark Tailings Prior to Capping Data #2
    • Motorcycle Park Prior to Capping
  • Lark Tailings Southeast Area and Copper Creek
    • Lark Tailings Post Removal Map: S and SE Areas
    • SE Lark Tailings Area and Copper Creek Data
  • Lark Tailings Trench Characterization
    • Motorcycle Park Trench Characterization
    • Motorcycle Park Trench Characterization Data
  • Lark Waste Rock Post Removal
  • Mascotte Pond
    • Mascotte Ponds Post Removal
    • Mascotte Ponds Post Removal Analytical
• Appendix H: References
• Appendix I: Site Inspection Photos and Observations
• Appendix J: Shortened Review of OU7 and OU17