DOE-EA-1759

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NEPA Document Collection for: DOE-EA-1759
EA at Bristol Bay Geothermal Area for Geothermal/Exploration

EA for Geothermal/Exploration at Southwest Alaska Regional Geothermal Energy Project Naknek, Alaska

General NEPA Document Info
Energy Sector Geothermal energy

Environmental
Analysis Type

EA

Applicant

Naknek Electric Association

Geothermal Area

Bristol Bay Geothermal Area

Project Location

Alaska

Project Phase

Geothermal/Exploration

Techniques

Comments EGS if hot dry rock encountered.
Time Frame (days)
NEPA Process Time 98
Participating Agencies

Lead Agency

United States Department of Energy

Funding Agency

United States Department of Energy

Managing District Office

DOE Golden Field Office

Managing Field Office

DOE Golden Field Office

Funding Agencies

none provided

Surface Manager

Naknek Electric Association

Mineral Manager

Naknek Electric Association
Selected Dates
Scoping Initiated Date 2010/02/19
Preliminary EA-EIS Date 2010/03/19
Final EA-EIS Date
/Public Comment Period
2010/04/02
Decision Document Date 5/28/2010
Relevant Numbers
Lead Agency
Doc Number
DOE/EA‐1759
Funding Agency
Doc Number
DOE/EA‐1759

Proposed Action

The Proposed Action would include the construction, operation, drilling, well logging, completion, installation of a seismic monitoring network, and drilling of two wells (G2 and G3 on an existing gravel pad) to a depth of approximately 3,658 meters (m) (12,000 feet [ft]) below ground surface. If data from the wells indicate it is necessary, one well (G1, G2, or G3) would be stimulated to fracture the rock and increase permeability within the rock structure. Stimulation protocol would utilize EGS and would increase the potential of the field to produce energy.


Data Completion Notes

Data entry complete 8/14

Documents

 
 
 

 
 
 
Categorical Exclusion Approval: 
 
FONSI: 
 
 
 
 

Resource Analysis

Resource Not
Present
Present,
Not
Affected
Present,
Potentially
Affected
Not
Indicated
Comment Applicant
Proposed
Mitigation
Agency
Imposed
Mitigation
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  
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.

Ground disturbance would be kept to a minimum to help prevent soil erosion during construction.

  imposed
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.

Under State of Alaska regulations, 18 AAC 50.502(c)(1)(C), the drilling, completion, and testing of well will not require an Alaska Department of Environmental Conservation, Air Quality Control Minor Permit

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

It is not anticipated that noise levels, associated only with temporary drilling activities, would be high enough to affect any biological resources in the area.

proposed  
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.

The development and existence of the proposed geothermal exploration and production facilities are not anticipated to have an effect on terrestrial mammals and would not obstruct movements.

  imposed
Fisheries 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.

The Bristol Bay region is home to the world’s largest sockeye salmon run. The major salmon producer near the project is the Naknek River.

  imposed
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.

 

  imposed
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.

 

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

NEA is committed to follow the IEA Protocol for Induced Seismicity Associated with Enhanced Geothermal Systems to minimize impacts that may cause seismic events.

  imposed
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.

Locally, should EGS methodology be implemented, the geology would be affected due to the creation of additional cracks and fissures in rock layers from increased water pressure.

   
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.

The proposed project would be located within or near breeding grounds, staging grounds, and migratory corridors for many species of land birds, waterfowl, shorebirds, and seabirds.

   
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.

No threatened and endangered species are found in the immediate vicinity of the project area. Steller’s eider, however, use the coastal and marine environment near the project area or around the vicinity of King Salmon

  imposed
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.

A review of the wetland determination prepared by HDR, dated April 2009, shows wetlands within the vicinity of the Proposed Action.

proposed  
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.

While numerous archaeological sites have been identified in the broader Naknek River drainage, no known or potential cultural resources or archeological sites were identified within 3.2 km (2 mi) of the geothermal project area

   
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.

Proposed activities would occur within the existing 49-hectare (120-acre) project area. The existing project area holds no special land use designation.

   
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.

The aesthetic value of NEA’s project area is not likely to be greatly affected by proposed project development. Due to the existing drill pad and access road, the change in landscape would be minimal with 0.4 hectares (1 acre) of additional surface disturbance.

   
Social 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.

Should drilling of geothermal wells G2 and G3 result in successful energy prospects, the long-term socioeconomic effect would result in power delivery to Bristol Bay Borough communities at a greatly reduced rate

   
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.

Should drilling of geothermal wells G2 and G3 result in successful energy prospects, the long-term socioeconomic effect would result in power delivery to Bristol Bay Borough communities at a greatly reduced rate

   
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.

 

   
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.

The activities associated with proposed geothermal exploration are not expected to have any direct effects on water resources within the proposed project area.

  imposed