EA for Well Field Development at Patua Geothermal Area - DOI-BLM-NV-C010-2011-00016-EA

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NEPA Document Collection for: EA for Well Field Development at Patua Geothermal Area - DOI-BLM-NV-C010-2011-00016-EA
EA at Patua Geothermal Area for Geothermal/Exploration, Geothermal/Well Field,

EA for Phase II of Patua Geothermal Project for Geothermal/Exploration, Geothermal/Well Field

General NEPA Document Info
Energy Sector Geothermal energy

Environmental
Analysis Type

EA

Applicant

Gradient Resources
Consultant Panorama Environmental, Inc.

Geothermal Area

Patua Geothermal Area

Project Location

Nevada

Project Phase

Geothermal/Exploration, Geothermal/Well Field

Techniques

Drilling Techniques, Exploratory Well, Thermal Gradient Holes
Time Frame (days)
NEPA Process Time 327
Participating Agencies

Lead Agency

Bureau of Land Management

Funding Agency

none provided

Managing District Office

Carson City

Managing Field Office

Stillwater

Funding Agencies

none provided

Surface Manager

Bureau of Land Management, BOR

Mineral Manager

Bureau of Land Management
Selected Dates
Application
Document Type
POO, POU, Sundry Notice
Revised Application Date 2011/03/15
Scoping Initiated Date 2011/06/30
Preliminary EA-EIS Date 2012/04/16
Final EA-EIS Date
/Public Comment Period
2012/04/16
Decision Document Date 2012/05/22
NEPA Schedule Comments
Revised application date estimated. Only March 2011 was identified. Same as Final EA. Preliminary EA date is an estimate. Only April 2012 was known.
Relevant Numbers
Lead Agency
Doc Number
DOI-BLM-NV-C010-2011-00016-EA
Serial Number NVN-085168X
Lease Numbers
Tiered Doc DOI-BLM-NV-C010-2010-0016-EA

Proposed Action

GRI is proposing to design, construct, and operate geothermal well pads and wells, geothermal fluid pipelines, and their associated access roads. These facilities would be connected to the previously proposed geothermal power plant for the Patua Phase I project or to a new nominal 60MW net geothermal power generation facility, to be located on one of two privately owned sections of land within the Unit. The power plant could be located adjacent to the existing Patua Phase I power plant, or in Section 29, T20N R26E. The elements of the proposed action include:

Reclamation‐managed lands
  • Drill 3 new temperature gradient holes (TGHs) (no vegetation removalrequired)
  • Construct 14 new well pads and drill multiple wells (57 acres disturbance)
  • Construct approximately 10.5 miles of geothermal fluid pipeline and access roads (159 acres of temporary disturbance and 159 acres of permanent disturbance)
  • Construction of 1.51 miles of new transmission line if a power plant is built south of Alt 50 (18.3 acres disturbance, assuming a 100‐foot corridor)
BLM‐managed lands
  • Drill 1 new TGH (no vegetation removal required)
  • Construct five new well pads and drill multiple wells (22 acres disturbance)
  • Construct approximately 2.2 miles of geothermal fluid pipeline and new access road (40 acres of temporary disturbance and 40 acres of permanent disturbance)
Private land
  • Construct approximately 1.1 miles of new access road and geothermal fluid pipeline (33 acres of temporary disturbance and 33 acres of permanent disturbance)
  • Construct nominal 60 MW net geothermal power generation facility and generation substation (29 acres permanent disturbance)
  • Construction of 0.8 miles of new transmission line if a power plant is built south of Alt 50 (9.7 acres permanent disturbance, assuming a 100‐foot corridor plus 32 acres of temporary disturbance for staging)

The project area is shown in Figure 1.1‐2 (see NEPA document). The total area of disturbance for the project would not exceed approximately 620 acres. Table 2.1‐1 and 2.1‐2 (see NEPA document) list the estimated total disturbance areas by component and land management/ownership. This amount of estimated disturbance in Table 2.1‐1 and 2.1‐2 (see NEPA document) is much greater than what will likely occur, as generous disturbance corridors for roads and pipelines have been assumed. A 300 foot wide corridor has been assumed for the pipeline and roadways across the entire project area. This corridor has been assumed in order to accommodate some expansion joints and turnouts, which could have a maximum width of 300 feet (assuming 150 feet would be temporary disturbance and 150 feet of permanent disturbance). In most locations, the width of permanent disturbance of pipeline and roads would only be an estimated 30 feet and temporary disturbance would be considerably less than 300 feet. Therefore, the total project disturbance will likely be significantly less than 620 acres.

Upon completion of the analysis and decision, GRI would begin development of the proposed project components. Development would begin with well field development, including access roads, well pads, and wells. The second stage of development would include construction of the power plant and transmission line (if necessary), and associated piping. Once construction is finalized, utilization, and power generation would begin. This EA also addresses decommissioning of the project.


Data Completion Notes

5/13/2014 Consolidated duplicate page: Corrected broken link to tiered doc; added POO, POU; added Revised Application Date (estimated); Added Final EA/EIS Date/Public Comment Period (same as estimated Revised Application Date); consolidated NEPA schedule comments to reflect estimates reported; added Exploratory Well to techniques; added Panorama Environmental, Inc as consultant; deleted duplicate page for DOI-BLM-NV-C010-2011-0016-EA. MB
Data entry complete on 8/29.
This document is a duplicate of DOI-BLM-NV-C010-2010-0016-EA and should be consolidated.


 
 
 

 
 
 
 
 
 
 
 
 
 

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.

 

  imposed
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.

 

  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.

 

   
Fire 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.

 

   
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.

 

  imposed
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.

 

  imposed
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.

 

   
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.

 

  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.

 

   
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 with Wilderness Characteristics
"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
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.

 

   
BLM Sensitive 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.

 

   
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.

 

  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.

 

  imposed
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.

 

  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
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.

 

  imposed
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.

 

   
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.

 

  imposed