CX-000677: Categorical Exclusion Determination

Crump Geyser Topic 1CX(s) Applied: A9, B3.1Date: 02/08/2010Location(s): Warner Valley, OregonOffice(s): Energy Efficiency and Renewable Energy, Golden Field Office

Office of NEPA Policy and Compliance

February 8, 2010
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Crump Geyser Topic 1
CX(s) Applied: A9, B3.1
Date: 02/08/2010
Location(s): Warner Valley, Oregon
Office(s): Energy Efficiency and Renewable Energy, Golden Field Office

Nevada Geothermal Power Company (NGP) would demonstrate the potential Crump Geyser geothermal resources in Southern Oregon by gathering data on existing system. In Phase 1 (exloration geophysics), NGP would collect and interpret multiple levels of magnetic field measurements, precision Bouguer gravity, detailed geologic mapping, and shallow seismic reflection and refraction data to help define the pattern of fault offsets in the shallow basalt formation found at Crump Geyser. These data would be used by NGP to target the temperature gradient and slim-wells to be drilled in Phase II. This analysis is Phase 1 only.

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