Four SEZs were identified in Colorado through the Record of Decision (ROD) for the Solar PEIS: Antonito Southeast SEZ, De Tilla Gulch SEZ, Fourmile East SEZ, and Los Mogotes East SEZ.
In the Solar PEIS ROD, the BLM committed to establishing a solar regional mitigation strategy (SRMS) for each SEZ. These regional mitigation strategies are expected to simplify and improve the mitigation process for future solar projects in SEZs.
In January 2017, the BLM released the document "Regional Mitigation Strategy for the Colorado Solar Energy Zones – Final Report". Additional supporting studies were also released; all the documents are available through the BLM's Renewable Energy Mitigation webpage.
The SRMS final report is applicable to future solar development in the Antonito Southeast, De Tilla Gulch, and Los Mogotes East SEZs. As detailed in the document, because additional cultural concerns have been identified for the Fourmile East SEZ since the Solar PEIS ROD was issued, the BLM is re-evaluating the designation of the Fourmile East area as a solar energy zone.