Aspen prepared an Environmental Impact Report and Environmental Impact Statement (EIR/EIS) on behalf of the California Public Utilities Commission (CPUC) and the Bureau of Land Management (BLM) for the SCE West of Devers (WOD) Upgrade Project.

Aspen supported the Gaskell West Solar Project by providing compliance inspection services for biological, cultural, and paleontological resources.

Aspen is providing design, CEQA/NEPA, permitting, and mitigation monitoring services to Palmdale Water District (PWD) for sediment removal at Littlerock Reservoir. Located on National Forest System (NFS) lands of the Angeles National Forest (ANF), Littlerock Reservoir is a man-made feature formed by the impoundment of water by the Littlerock Dam.

Aspen is the prime contractor for this contract and is responsible for the daily management of this multi-year, multi-task, statewide contract, managing multiple Work Authorizations and 50 subcontractors.

Under Contract to the California Public Utilities Commission (CPUC), Aspen prepared an Initial Study and Mitigated Negative Declaration (IS/MND) for Southern California Edison’s (SCE) proposed Downs Substation Expansion 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.

Aspen prepared an EIR on behalf of San Luis Obispo County for the CVSR proposed by SunPower Corporation. SunPower proposed to con­struct and operate a controversial 250 MW solar photovoltaic power plant on approxi­mately 4,000 acres of rangeland in the Carrizo Plain, an unincorpo­rated portion of eastern San Luis Obispo County.

The California Department of Forestry and Fire Protection (CAL FIRE) proposed to upgrade existing mountaintop telecommunications towers, vaults, and other supporting infrastructure as required to support the State's Public Safety Microwave Network and continue to provide essential emergency communications linkages for CAL FIRE'S fire protection and emergency response command and control throughout the State. On behalf of California Department of General Services (DGS), the CEQA lead agency, Aspen assisted with the environmental permitting and surveys at the following 7 CAL FIRE communications facilities: Sierra Vista in Calaveras; Mount Oso in Stanislaus; Chalk Mountain in Santa Cruz; Pratt Mountain and Mount Pierce in Humboldt; Bunchgrass in Shasta; and Banner Mountain in Nevada Counties. 

Aspen prepared two major environmental documents, an EIR and EIS/SEIR, evaluating a proposed crude oil pipeline in southern California.

Aspen provided environmental support for various projects under Sacramento Municipal Utility District (SMUD)’s Environmental Regulatory Support Services on-call contract.

The existing Mesa Wind Project is located entirely on approximately 450 acres of lands administered by the Bureau of Land Management (BLM) in Riverside County. The project is located about 11 miles northwest of the City of Palm Springs, north of Interstate 10 and just west of the Whitewater River.

The Oberon Renewable Energy Project is a 500-megawatt solar photovoltaic facility with integrated energy storage and a generation-tie line that connects into the statewide power grid.

Aspen is supporting the County with the environmental review and permitting of this sediment removal project. The County anticipates removing approximately 2.5 million cubic yards of sediment from Cogswell Reservoir, which is in the south-central portion of the Angeles National Forest along the West Fork of the San Gabriel River (WFSGR)

Aspen prepared emergency work permits for the project, which involved emergency repairs to four flood control structures in and adjacent to the Triunfo Canyon Open Space Area, near the city of Westlake California, northwest Los Angeles County.

Aspen prepared an Addendum to the 2015 Los Angeles County Flood Control District Enhanced Watershed Management Programs Final Environmental Impact Report (Program EIR).