This project completed a plan consolidation effort that began in 2016 for the California Desert Conservation Area (CDCA) Plan. The consolidation included all amendments to the CDCA Plan of 1980 as Amended (sans project-specific amendments) through the Haiwee Geothermal Leasing Area amendment of 2020.

On behalf of the San Diego Unified Port District (District), Aspen prepared an Initial Study (IS) and Environmental Impact Report (EIR) for the proposed Mitsubishi Cement Corporation at Warehouse C: Bulk Cement Warehouse and Loading Facility Project (Project). 

Aspen managed the preparation of an EIR/EIS for the highly controversial 150-mile high-voltage Sunrise Powerlink Transmission Project, under the direction of the BLM (El Centro Field Office) and CPUC.

Units 2 and 3 of the San Onofre Nuclear Generating Station (SONGS) were shut down in January 2012. Unit 2 last operated on January 9, 2012, when it was removed from service for a planned refueling and maintenance outage.

Aspen Environmental Group is assisting the California State Lands Commission on behalf of Aurora Solar, LLC, a wholly owned subsidiary of Avangrid Renewables, with the environmental permitting and the CEQA documentation for a proposed 200 megawatt (MW) solar photovoltaic facility with up to 200 MW of integrated energy storage on approximately 3,570 acres of land managed by the CSLC, in San Bernardino County, CA.