Aspen managed the preparation of an Environmental Impact Report (EIR) for the Topaz Solar Farm proposed by Topaz Solar Farms LLC, a wholly owned subsidiary of First Solar, Inc.

The Tehachapi Renewable Transmission Project (TRTP) involves construction of a series of transmission system improvements extending from the Tehachapi Wind Resource Area in eastern Kern County to the Los Angeles Basin.

Western Area Power Administration and Aspen developed an EA (which mirrors an MND in many respects) and seven operation and maintenance (O&M) Plans and procedures in response to proposed changes in O&M procedures within Western’s Central Valley Project and Pacific AC Intertie ROWs and the Transmission Agency of Northern California’s (TANC) California-Oregon Transmission Project ROWs.

Level 3 Communications proposed to construct an extensive 2,000-mile fiber optic network throughout California to address increasing demand for broadband access.

Aspen was selected by the California Public Utilities Commission (CPUC) to undertake the CEQA environmental review for two applications for Certificates of Public Convenience and Necessity filed by Southern California Water Company (SCWC).

Aspen has been assisting San Bernardino County with the restoration of Sheep Creek .The restoration site is located on the north slope of the San Gabriel Mountains near the community of Wrightwood in San Bernardino County.

Because the potential for flooding along the Santa Paula Creek channel is considered life threatening, the USACE began construction of the flood control channel at Santa Paula Creek in June 1997.

Aspen completed this 2,000-page document in 1992 for a Joint Review Panel consisting of Santa Barbara County, the State Lands Commission, the U.S. Army Corps of Engineers, and California EPA.

The Desert Harvest Solar Project is a solar photovoltaic facility that will generate 150 megawatts of electricity on an approximately 1,200-acre site characterized by undeveloped, non-agricultural land managed by the California Desert District of the U.S. Bureau of Land Management (BLM).

Under contract to California Trout and in partnership with California Department of Parks and Recreation (CDPR), Aspen prepared the Rindge Dam Removal Pathway Risk-Benefit Assessment.

Under contract to the California Department of Water Resources (DWR), Aspen Environmental Group prepared an Environmental Impact Report (EIR) for a proposal to change the seasonal flow release schedule of Pyramid Dam, located at the southern end of Pyramid Lake in Los Angeles County, California.