DOI-BLM-CA-EA-2002-???

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NEPA Document Collection for: DOI-BLM-CA-EA-2002-???
EA at Glass Mountain Geothermal Area for Geothermal/Well Field,

Glass Mountain Exploration Environmental Assessment/Initial Study for Geothermal/Well Field

General NEPA Document Info
Energy Sector Geothermal energy

Environmental
Analysis Type

EA

Applicant

Calpine Corporation (Calpine) and CPN Telephone Flat Inc. (CPN)
Consultant MHA Environmental Consulting, Inc.

Geothermal Area

Glass Mountain Geothermal Area

Project Location

California

Project Phase

Geothermal/Well Field

Techniques

Exploration Drilling, Thermal Gradient Holes
Time Frame (days)
Participating Agencies

Lead Agency

BLM

Funding Agency

none provided

Managing District Office

Managing Field Office

Funding Agencies

none provided

Surface Manager

BLM

Mineral Manager

BLM
Selected Dates
Preliminary EA-EIS Date 2002/05/07
Final EA-EIS Date
/Public Comment Period
5/1/2002
Relevant Numbers
Lead Agency
Doc Number
Lease Numbers

Proposed Action

The proposed project would include construction of two new well pads, for the drilling, completion, and flow testing of two deep (production size) exploration wells and the drilling of a Temperature Gradient Hole (TGH) on one of these well pads. The proposed action would also include testing of three existing exploration wells located within the Unit. The proposed activities are scheduled to begin in the summer of 2002.

The exploration wells would be drilled to an approximate depth of 9, 000 feet and flow tested for up to 30 days. Prior to drilling an exploration well at the 64-27 site, CPN proposes to first drill a TGH to evaluate the extent and quality of the thermal resource. The TGH would be drilled to a depth of 6,000 feet, or 500°F, whichever comes first.


Data Completion Notes

Argonne has EA file - maybe in NGDS?

Data entry based on draft EA complete 8/16


 
 
 

 
 
 
 
 
 
 
 
 
 

Resource Analysis

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

 

   
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.

 

   
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.

 

   
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.

There are no known commercial deposits of precious, strategic, or base metals in the project area. The proposed action would not cause an increase in seismicity in the area.

   
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.

To minimize potential effects from geologic hazards and erosion, Best Management Practices (BMPs) would be employed during construction and maintenance of all project drill sites and access roads.

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.

Potential impacts to cultural resources in the project area are described in terms of the distance of identified cultural resource sites to the five sites included in the proposed action.

  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.

American Indian groups use areas within the Medicine Lake Highlands for ceremonial and spiritual purposes and for periodically gathering natural resources.

  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.

The construction of the well pad sites would involve the removal of small amounts of potential wildlife habitat and vegetation.

  imposed
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.

The proposed project construction could have a substantial adverse effect, either directly or through construction-related habitat modifications, on certain special status species.

  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.

Small amounts of vegetation in the immediate drill site areas would be lost. Vegetation will be cleared during the widening and construction of the proposed well sites and associated sumps in the area.

   
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.

Noxious weeds are not present in the disturbed areas of the project sites; however, projectassociated surface disturbance could create a favorable environment , for introducing noxious weeds to the project areas.

  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
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.

Typical air quality impacts of geothermal exploration are associated with short-term construction dust, emissions from the operation of diesel-fueled engines, and release of geothermal fluids to the atmosphere during well testing.

  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.

Estimates of noise levels from construction of a typical well pad assumed an equipment assemblage which included one large bulldozer, one scraper, a large diesel truck, and one cement truck or crane.

  imposed
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
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.

The proposed action would not be expected to conflict with existing land uses in the vicinity.

   
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.

Due to the short duration of the activities, and the limited visibility of the proposed well sites, the proposed action would not have a significant impact on recreation in the area.

  imposed
Access and Transportation
"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 not substantially increase traffic on regional roadways or cause roadway capacities to be exceeded.

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

Project impacts on health and safety related to spills of hazardous materials and exposure of receptors to hazardous substances would be less than significant with the implementation of measures proposed by CPN and the proposed mitigation measures.

  imposed
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.

 

   
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.

During drill site and access road construction or improvement local contractors would be utilized. It is estimated that up to 4 to 6 local construction contractor employees would be employed over all, or part, of the six-month period(s) when field activities are in progress.

   
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.

The proposed project would be located within the Klamath and Modoc National Forests, and would not directly affect the environmental or human health conditions of any American Indian, or other minority or low-income residential communities.

   
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.

 

  imposed
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 proposed project design and applicable regulations define measures to protect surface water and groundwater quality.

proposed imposed