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Bonanza Mine
Environmental Cleanup Site Information Number (ECSI): 2672County: Douglas
City: Sutherlin
Region: Western
Contact Information
Project Manager:
Bryn Thoms
Phone: 541-687-7424
E-mail:
Site Summary
In a 1999 Preliminary Assessment, the U.S. Environmental Protection Agency (EPA) identified potential public health and environmental threats from mercury contamination at the Bonanza mine. In EPA's 2000 Site Investigation, soil and sediment samples collected at the mine site indicated high levels of arsenic and mercury, confirming that the Bonanza Mine posed a serious threat to public and environmental health. [more...]
Current Documents and Supporting Information
- 2005 Post-Removal Assessment Report PDF
- 2000 Removal Action and Data Summary Report PDF
- August 2002 DEQ Orphan Declaration PDF
- Level 1 Ecological Screening and Site Visit Summary PDF
- Oregon Department of Public Health Services (DHS) Public Health Consultation
- Umpqua Watershed Mercury Monitoring Plan PDF 1.9MB
- Generalized Location Map of Mine Site JPG
- Map of Key Site Features and Sampling Results JPG
- Map of Site Vicinity with Sampling Results JPG
For more information about DEQ's Land Quality Division and its programs, see the contact page.
For more information about DEQ's Land Quality Division call 503-229-5913 .
Projects and Programs Publications and Forms Laws and Regulations Public Notices Permits and Licenses Databases
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