Sunzia Southwest

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NEPA Document Collection for: Sunzia Southwest
EIS

SunZia Southwest Transmission Project

General NEPA Document Info
Energy Sector Transmission

Environmental
Analysis Type

EIS

Applicant

SunZia Transmission, LLC
Consultant Environmental Planning Group; Wind River Environmental Group; University of New Mexico; University of Arizona, New Mexico State University

Geothermal Area

Project Location

Project Phase

Techniques

Time Frame (days)
Participating Agencies

Lead Agency

Funding Agency

none provided

Managing District Office

BLM Las Cruces District Office

Managing Field Office

Funding Agencies

none provided

Surface Manager

BLM

Mineral Manager

none provided
Selected Dates
Pre-Application
Meeting Date
2009/05/29
Application
Document Type
NOI, POD
EID Federal Register Date 2009/05/29
Scoping Initiated Date 2009/06/22
Preliminary EA-EIS Date 2012/05/04
Final EA-EIS Date
/Public Comment Period
2013/06/14
NEPA Schedule Comments
The Bureau of Land Management (BLM) is preparing an Environmental Assessment (EA) for the SunZia Southwest Transmission Project (SunZia) to determine whether newly identified measures to mitigate potential impacts to military operations require the BLM to prepare a supplement to the Final Environmental Impact Statement (EIS) published in June 2013. On June 4, 2014, the Department of Defense (DoD) offered mitigation measures that, if adopted, would address DoD’s prior objections to the SunZia project by resolving potential impacts to military operations. The BLM expects to publish the Draft EA in Fall 2014, with a Final/Approved EA expected in late 2014 or early 2015.
Relevant Numbers
Lead Agency
Doc Number
NM-114438; AZA35058

Proposed Action

The Applicant’s objectives are to increase transfer capability, thereby relieving existing transmission congestion and allowing additional electricity to be generated and transported to western power markets and load centers in the Desert Southwest. The Project would be colocated with areas of undeveloped renewable resource potential to provide a path for energy delivery, and would provide power to help meet growing demand in the western United States and enhance domestic energy security. The Applicant group comprises load-serving utilities and independent developers. The Project would assist load-serving utilities in meeting the requirements to address energy delivery obligations to meet state renewable portfolio standards; while the independent developers’ purpose for the Project is to create a market opportunity to satisfy transmission needs that have been identified at local, regional, and national levels.

The proposed Project would include two new, single-circuit 500 kV transmission lines located within a right-of-way up to 1,000 feet wide. At least one of the two 500 kV transmission lines would be constructed and operated as an alternating current (AC) facility; the other transmission line could be either an AC or direct current (DC) facility. Depending on the configuration, the Project could provide up to 4,500 megawatts (MW) of additional transfer capability on the regional electrical grid. Based on a typical span of 1,400 feet, three to four transmission line structures per mile would be required for each of the two lines, with typical structure heights of 135 feet that range between 100 and 175 feet.

The transmission line route would originate at a new substation (SunZia East) in Lincoln County, New Mexico, and terminate at the Pinal Central Substation in Pinal County, Arizona. The Project would be located within Lincoln, Socorro, Sierra, Luna, Grant, Hidalgo, and/or Torrance counties in New Mexico; and Graham, Greenlee, Cochise, Pinal, and/or Pima counties in Arizona. The BLM preferred alternative is approximately 515 miles long, and alternative routes range between 460 and 542 miles in length.

The proposed Project would include the construction of the SunZia East 500 kV Substation at the Project’s eastern terminus in Lincoln County, and up to three ntermediate substations on private or state lands: -Midpoint Substation, located in Luna County, New Mexico -Lordsburg Substation, located in Hidalgo County, New Mexico -Willow-500 kV Substation, located in Graham County, Arizona  The Pinal Central Substation, at the Project’s western terminus, has already received its regulatory permits and approvals and will be constructed by Salt River Project and other entities.


Data Completion Notes

A complete record of all documents completed for Project is located at: http://www.blm.gov/nm/st/en/prog/more/lands_realty/sunzia_southwest_transmission.html

Documents

 
 
 

 
 
 
 
EA/EIS Report: 
 
 
 
 
 

Resource Analysis

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

 

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.

 

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.

 

proposed 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
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.

 

proposed  
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
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.

 

proposed  
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.

 

proposed imposed
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.

 

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  
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.

 

proposed  
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.

 

proposed  
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.

 

proposed 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.

 

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  
Water 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 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.

 

  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