
Contemporary Seismicity, Faulting, and the State of Stress in the Colorado Plateau
The contemporary seismicity of the Colorado Plateau based on seismic monitoring in the past 30 yr can be characterized as being of small to moderate magnitude, and contrary to earlier views, of a low to moderate rate of occurrence with earthquakes widely distributed. Concentrations of earthquakes have been observed in a few areas of the plateau. The most seismically active area of the Colorado Plateau is the eastern Wasatch Plateau Book Cliffs, where abundant small-magnitude seismicity is induced by coal mining.
Wong, I.G. and Humphrey, J.R., 1989, Contemporary seismicity, faulting, and the state of stress in the Colorado Plateau: Geological Society of America Bulletin, v. 101, p. 1127-1146.
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Snapshots Updated
The Forest Service is considering five reasonable action alternatives for a Tailings Storage Facility. To view Snapshot summaries and accompanying maps, click here.
EIS Status - Feb 2019
- Proponent submits revised Plan of Operations [Sep 2014]
- Federal Register Notice of Intent to prepare EIS [Mar 2016]
- Public scoping period and scoping meetings
[5 meetings between Mar-Jun 2016; comment period extended from 60 days to 120 days, closed Jul 18, 2016 ] - Compile and review existing data
- Prepare project description and identify project alternatives
- Publish Alternatives Evaluation Report [Sep 2017]
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We Are HereValidate Baseline Information; analyze environmental effects
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Prepare Draft EIS
- Federal Register Notice of Availability of Draft EIS
- 45-day public review and comment period, with public meetings
- Respond to public comments and prepare Final EIS
- Federal Register Notice of Availability of Final EIS and Draft ROD
- 45-day Public Objection Period
- Resolve objections to Final EIS and draft ROD
- Issue Final Record of Decision
Forest Points of Contact
Media & General Info
John Scaggs
jscaggs@fs.fed.us
Project Manager
Resolution Copper
Mary Rasmussen
mcrasmussen@fs.fed.us
Apache Leap Special Management Area
Apache Leap SMA website