Desert Southwest Environmental Review
The Environmental Team at Desert Southwest (DSW) provides specialized support to the Region to maintain compliance with the National Environmental Policy Act (NEPA). Some actions may have environmental impacts that require an environmental assessment (EA) and a detailed analysis to determine the extent and severity of the impacts. For actions that have significant impacts or consequences to the environment or human health, environmental impact statements (EIS) are prepared. Other minor actions produce documents like categorical exclusions (CX). In order to promote transparency and openness, the various types of environmental documents are posted below.
Environmental Impact Statements (EIS)
- Southwest Intertie Project
- Southline Transmission Project, DOE/EIS-0474
Environmental Assessments (EA)
- Apache GT5 & GT6 Generation Project, DOE/EA-2238
- Arizona Solar 1 Interconnection Project, DOE/EA-2098
- Bouse Upgrade Project, DOE/EA-2106
- Cliffrose Solar Energy Interconnection Project, DOE/EA-1989
- Crossman Peak Communications Facility Project, DOE/EA-2023
- Davis-Kingman 69kV Rebuild Project EA
- Glen Canyon-Rogers 230/345-kV EA for Operations & Maintenance and Integrated Vegetation Management Programs, DOE/EA-2008
- Herbicide Use at Three Substations in Imperial County California and Maricopa and Yuma Counties, Arizona
- Townsite Solar Project Transmission Line Project, DOE/EA-1960
- ED2 to Saguaro No. 2 Transmission Line Rebuild Project, DOE/EA-1972
- MPP-Q01 Interconnection Project, DOE/EA-2208
- Parker-Blythe No. 2 Transmission Line Rebuild Project, DOE/EA-2168
- Parker-Headgate Rock and Parker-Bouse Rebuild Project, DOE/EA-1987
- Parker-Davis Transmission System Routine Operation and Maintenance Project and Integrated Vegetation Management Program EA, DOE/EA-1982
- Ridgenose Solar Interconnection Project EA
- Sterling Solar 1 Interconnection Project, DOE/EA-2124
- Sterling Solar 2 Interconnection Project, DOE/EA-2141
- Tucson-Apache 115-kV Transmission Line Right-of-Way Application, DOE/EA-2002
- Vidal Solar Interconnection Project, DOE/EA-2170
Findings of no Significant Impacts (FONSI)
- Bouse Upgrade Project, DOE/EA-2106
- Davis-Kingman 69kV Rebuild Project FONSI
- Glen Canyon to Pinnacle Peak 345 kV Transmission Lines Vegetation Management
- ED5-Palo Verde Hub Project FONSI
- Perrin Ranch Wind Energy Project FONSI DOE EA-1853
- Power Purchase Agreement for Part 2 of the Mesquite Solar Energy Project FONSI
- Townsite Solar Project Transmission Line Project, FONSI, DOE-EA-1960
- Gila to North Gila Transmission Line Rebuild and Upgrade Project, FONSI, DOE-EA-1948
Programmatic Agreements
Arizona
- Draft Programmatic Agreement for Routine Maintenance in AZ (excludes Appendices A and C)
- Programmatic Agreement Regarding Maintenance and Minor Construction Activities on Existing WAPA Transmission Lines and Facilities on the Gila River Indian Reservation, Maricopa and Pinal Counties, Arizona
- Programmatic Agreement Regarding Maintenance and Minor Construction Activities at Existing Western Transmission Lines, Facilities and Properties in Arizona
- Monitoring and Discovery Plan
California
Nevada
DSW’s Facilities Historic Context Statement
Categorical Exclusions (CX)
Routine Operations & Maintenance and Minor Construction Program-Wide
- Transmission Lines Blanket CX FY21-26 (PDF)
- Substation and Communication Sites Blanket CX FY25-30 (PDF)
By Year
CX Archive
Last modified on October 9th, 2024