DOI-BLM-CA-017-05-051

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NEPA Document Collection for: DOI-BLM-CA-017-05-051
EA at Long Valley Caldera Geothermal Area for Geothermal/Well Field,

Basalt Canyon Geothermal Pipeline Project Environmental Assessment and Draft Environmental Impact Report for Geothermal/Well Field

General NEPA Document Info
Energy Sector Geothermal energy

Environmental
Analysis Type

EA

Applicant

Mammoth Pacific
Consultant Environmental Management Associates, Inc.

Geothermal Area

Long Valley Caldera Geothermal Area

Project Location

California

Project Phase

Geothermal/Well Field

Techniques

Comments California Clearinghouse Number 2003092101
Time Frame (days)
Participating Agencies

Lead Agency

BLM

Funding Agency

none provided

Managing District Office

BLM Bishop Field Office

Managing Field Office

BLM Bishop Field Office,

Funding Agencies

none provided

Surface Manager

BLM Bishop Field Office,
,

Mineral Manager

BLM
Selected Dates
Application
Document Type
GPD, ROW
Scoping Initiated Date 2005/02/10
Preliminary EA-EIS Date 2005/07/11
Relevant Numbers
Lead Agency
Doc Number
CA-017-05-051,
Lease Numbers

Proposed Action

The applicant, Mammoth Pacific, L.P. (MPLP), has proposed to construct, operate, maintain and, following the expected 30-year life, decommission the Basalt Canyon Geothermal Pipeline Project ("Project" or "Proposed Action"). This project is designed to deliver approximately 3,600 gallons per minute (gpm) of geothermal fluid though a new pipeline to two existing MPLP geothermal power plants located eat of the Town of Mammoth Lakes in Mono County, California. The geothermal fluid would be produced from two geothermal exploration wells that would be drilled, completed and tested as part of the previously approved geothermal exploration projects. All of the sixteen previously approved exploration well drill sites are located west of U.S. Highway 395 and north of California State Route 203. All Project activities would be conducted within a 1,660-acre Project area, as shown in Figure S1.

Conditions of Approval

See stipulations section in the attached FONSI.

Data Completion Notes

8/9 Data entry complete. Attached FONSI does not seem to be fully related to the attached EA. The FONSI is for a geothermal well and slimhole exploration project and the EA is for a pipeline project.

Need to add Public Health and Safety as a resource

8/22/13 - The 'FONSI/DR is actually for EA CA-170-02-15 Bassalt Canyon..dated Jan 2002 KW

8/26/13 - I deleted the FONSI from this page. Filename is incorrect for the file and stands as "CA-017-05-51-EA-DR -FONSI.pdf," Andrew Gentile. Unable to find Final EA or FONSI online.

When RMP added, add "Inyo National Forest “Land and Resource Management Plan” (LRMP) 1988"


 
 
 

 
 
 
 
 
 
 
 
 
 

Resource Analysis

Resource Not
Present
Present,
Not
Affected
Present,
Potentially
Affected
Not
Indicated
Comment Applicant
Proposed
Mitigation
Agency
Imposed
Mitigation
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 proposed pipeline route would cross areas near U.S. Highway 395 and California State Route 203 that have been designated with a visual quality objective (VQO) of “Retention” by the Inyo National Forest. U.S. Highway 395 is also a California Scenic Highway and State Route 203 is a County Scenic Highway.

proposed 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.

Production of geothermal fluid from the two wells in the Basalt Canyon area and injection of that fluid into the Casa Diablo injection reservoir through existing geothermal injection wells could alter the pressures and temperatures of these geothermal reservoirs. These geothermal reservoir changes may adversely affect other hydrothermal features (such as Hot Creek Fish Hatchery springs and Hot Creek springs). They may also influence or adversely affect the local or regional shallow, fresh groundwater system.

proposed 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.

Changes to the geothermal reservoir(s) from Project operations could adversely affect the Hot Creek Fish Hatchery springs. This could alter the listed critical habitat of the endangered Owens tui chub, which is dependent on the flow of these springs.

   
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.

Mule deer are known to use the Project area as summer range, and possibly as a migration corridor and fawning habitat.

proposed 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.

The Project is located within the Sherwin/Deadman Sheep and Goat Grazing Allotment of the Inyo National Forest.

proposed imposed
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.

 

proposed 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.

 

  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.

 

proposed  
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.

 

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.

 

proposed 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
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
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.

With exception of approximately 20 acres of private (fee) land owned by the City of Los Angeles, all of the Project area has been previously surveyed for cultural resources. Although some of these cultural resource surveys are old, they indicate a relatively low density of identified cultural resources, and thus the likelihood that all important cultural resources can be avoided by Project surface disturbing activities.

proposed 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.

 

proposed imposed
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