DOI-BLM-NV-C010-2010-0006-EA

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NEPA Document Collection for: DOI-BLM-NV-C010-2010-0006-EA
EA at Gabbs Valley Geothermal Area for Geothermal/Exploration

Gabbs Valley and Dead Horse Wells Geothermal Exploration Projects EA for Geothermal/Exploration

General NEPA Document Info
Energy Sector Geothermal energy

Environmental
Analysis Type

EA

Applicant

Ormat Technologies Inc
Consultant Environmental Management Associates

Geothermal Area

Gabbs Valley Geothermal Area

Project Location

Nevada

Project Phase

Geothermal/Exploration

Techniques

Downhole Techniques, Well Testing Techniques, Drilling Techniques, Exploration Drilling
Time Frame (days)
Application Time 363
NEPA Process Time 363
Participating Agencies

Lead Agency

BLM

Funding Agency

none provided

Managing District Office

Carson City

Managing Field Office

Stillwater

Funding Agencies

none provided

Surface Manager

BLM

Mineral Manager

BLM
Selected Dates
Pre-Application
Meeting Date
2008/03/05
Application Date 2009/01/15
Application
Document Type
NOI, POO, Sundry Notice
Revised Application Date 2009/11/16
Scoping Initiated Date 2009/01/15
Preliminary EA-EIS Date 2009/01/12
Decision Document Date 1/13/2010
Relevant Numbers
Lead Agency
Doc Number
DOI-BLM-NV-C010-2010-0006-EA
Serial Number NVN-088205
Lease Numbers
Tiered Doc DOI-BLM-NV-C010-2010-0006-DNA

Proposed Action

Ormat is proposing to conduct geothermal exploration projects in Gabbs Valley Nevada. The proposed action consists of exploration drilling, drilling temporary water wells, road construction and maintenance, (both on lease and off lease), and develop four gravel pits for aggregate to be used for proposed actions. The proposed action includes:

  • Drilling up to 58 TGHs (31 at Gabbs Valley and 27 at Dead Horse Wells), each to a maximum depth of approximately 1,000 feet, and measuring the temperature profile in each;
  • Constructing up to 38 observation well drill pads (25 at Gabbs Valley and 13 at Dead Horse Wells) at the sites designated as TGH/Observation/Exploration Well sites. Drilling and completing each observation well to a depth of about 3,000 feet from each of the constructed observation well drill pads,
  • Constructing up to 38 exploration well drill pads at the sites designated as TGH/Observation/Exploration well sites (by enlarging the previously constructed observation well pads or constructing new drill pads on an undrilled site). Drilling and completing an exploration well to a depth of about 7,000 feet at each of the constructed drill pads;
  • Flow-testing each observation and exploration well to obtain samples of geothermal fluids and to collect aquifer information from the geothermal reservoir. Aquifer testing would define aquifer characteristics and would predict the effects of pumping on existing wells as well as determine potential dewatering of shallower aquifers and springs in the geothermal unit areas. During testing, all geothermal fluids would be discharged into the well pad reserve pits. After more than one well has been completed, further flow testing may be conducted by running a temporary pipeline between wells and flowing the fluids from one well into the other well;
  • Constructing, improving or maintaining access roads (both on lease and off lease), as proposed;
  • Drilling temporary water wells at one or more proposed drill site; and
  • Develop three material sites for the Gabbs Valley Project and one material site for the Dead Horse Wells Project to supply aggregate for road and drill pad construction and maintenance.

Data Completion Notes

Data entry complete. 7/22: Added decision and conditions docs

Documents

Serial Register Page: Application: Application Attachments:

 
 
 
 
 
FONSI: 
Decision: 
 
 
 

Resource Analysis

Resource Not
Present
Present,
Not
Affected
Present,
Potentially
Affected
Not
Indicated
Comment Applicant
Proposed
Mitigation
Agency
Imposed
Mitigation
Air Quality
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

proposed  
Areas of Critical Environmental Concern
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

   
Cultural Resources
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

proposed imposed
Environmental Justice
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

   
Prime or Unique Farmlands
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

   
Floodplains
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

   
Invasive, Nonnative Species
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

  imposed
Migratory Birds
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

   
Native American Concerns
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

   
Threatened and Endangered Species
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

   
Special Status Species
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

   
Wastes Hazardous or Solid
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

proposed  
Wetlands and Riparian Zones
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

   
Wild and Scenic Rivers
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

   
Wilderness
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

   
Lands and Realty
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

   
Range Resources
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

   
Soils
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

proposed  
Recreation
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

   
Vegetation
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

   
Visual Resources
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

  imposed
Wildlife Resources
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

proposed imposed
Wild Horse and Burro Management
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

   
Geology and Minerals
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

   
Economic Values
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

   
Paleontological Resources
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

   
Wilderness
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

The proposed action is not within the Gabbs Valley Range WSA. However, the southeast corner of the Dead Horse Wells Project area abuts the northwest corner of the Gabbs Valley boundary road.

   
Water Quantity
"NEPA_Resource_Analysis" is not in the list of possible values (Not Present, Present, Not Affected, Present, Potentially Affected, Not Indicated) for this property.

 

proposed imposed