The Fourmile East former Solar Energy Zone (SEZ) that was designated through the 2012 Western Solar Plan was de-allocated by the BLM in November 2018 because additional cultural concerns had been identified for the area. The Environmental Assessment and Finding of No Significant Impact supporting the deallocation of the SEZ are available on the BLM National NEPA Register website for this project.
Documentation of 2012 Solar PEIS analyses for the area of the former Fourmile East SEZ are available through the 2012 Solar PEIS Archives.