Under contract to the California Department of Conservation (DOC), Aspen prepared a Program EIR assessing oil and gas well stimulation treatments throughout California, as required by SB 4 as amended, which required the Division of Oil, Gas and Geothermal Resources (DOGGR) to evaluate the impacts of well stimulation treatments that may occur from either existing or future oil and gas wells, including hydraulic fracturing and acid well stimulation.

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 State Lands Commission (CSLC) has selected Aspen to prepare the Environmental Impact Report (EIR) for California’s first offshore wind turbines. The CADEMO Project will include four floating wind turbines using two different forms of foundations.

Aspen has been supporting a group of municipal generators known as the Northern California Generation Coalition as they participate in three cases being heard by the Public Utilities Commission: the General Rate Case of PG&E, the Gas Cost Allocation Proceeding (GCAP) of PG&E and the PUC’s own rulemaking for long-term gas system planning issues.

Under Aspen’s environmental services on-call contract, Aspen prepared an IS/MND on behalf of Silicon Valley Power (SVP) for the proposed Homestead Substation Rebuild Project, which would rebuild the existing Homestead Substation within the existing substation site in the City of Santa Clara.

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.

San Bernardino County Land Use Services Department has used its RECPG funds to prepare a Renewable Energy and Conservation Element for its General Plan.

Inyo County has used its Renewable Energy and Conservation Planning Grants (RECPG) Program funds to develop a Renew­able Energy General Plan Amendment (REGPA) to include policies for facilitating and locating renewable energy development in the County.

The County of Imperial was the recipient of a California Energy Commission Grant on July 15, 2013, to update the existing “Geothermal/Alternative Energy & Transmission Element” of the General Plan. 

In February 2014, Aspen, as a subcontractor to PMC, prepared the County of San Luis Obispo Renewable Energy Streamlining Program (RESP) Opportunities and Constraints Tech­nical Study (OCTS).

Aspen’s Catherine Elder was a pro bono, independent participant in the 2022-23 North American Energy Standards Board gas-electric harmonization discussions that developed 20 recommendations to prevent a recurrence of adverse electricity and natural gas price and reliability and resiliency impacts experienced during winter storm Uri in February 2022 and Elliot in December 2022.

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

Aspen prepared an EIR for the Santa Barbara County Energy Division on the proposed Plains Exploration and Production Company (PXP) Tranquillon Ridge Project which would involve the development of oil and gas wells from Platform Irene into the Tranquillon Ridge Field located in State waters using extending reach drilling technology.