Kennecott Project

Butterfield Creek

Completion of the Kennecott South Zone Five Year Review

for Operable Units 3, 6, 7, 17 and 18

Butterfield Creek Drainage
Looking Toward Herriman.

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
Phone: 801-536-4282

Dave Allison
UDEQ Community Involvement
Phone: 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 (5.8 mb)
Appendix A: Five Year Review: Community Interviews (1.6 mb)
Summary, Individual Interview Logs, and Announcement Advertisement
Appendix B: Communiques with the Division of Water Quality (3.6 mb)
UPDES, Stormwater, and Groundwater Protection Programs Pertaining to Permit Compliance
Appendix C: Communique from Kennecott Utah Copper Corporation (1.2 mb)
With Attached Final Compliance Monitoring Reports fro Butterfield Creek
Appendix D: DERR Yosemite Release Inspection Report (7.3 mb)
Appendix E: September 2002 ROD Federal and State ARARs for North End Remediation
Appendix F: Butterfield Creek, Canyon, and Confluence Areas
Appendix G: Lark Waste Rock and Tailings Areas
- Lark Tailing Prior to Capping Characterization
- 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 (93 mb; Word doc)
Appendix J: Shortened Review of OU7 and OU17

Top

Revised: November 3, 2009

The mission of the Department of Environmental Quality is to safeguard human health and quality of life by protecting and enhancing the environment.

Kennecott Project

Butterfield Creek

Completion of the Kennecott South Zone Five Year Review

for Operable Units 3, 6, 7, 17 and 18

Report Contents

The mission of the Department of Environmental Quality is to
safeguard human health and quality of life by protecting and
enhancing the environment.