Carbon Dioxide Capture and Storage

Carbon dioxide capture and storage (CCS) is a technology aimed at reducing greenhouse gas emissions generated by the burning of fossil fuels during industrial and energy-related processes. CCS involves the capture, transport and long-term storage of carbon dioxide, usually in geological reservoirs deep underground that would otherwise be released to the atmosphere.

CCS is an important part of the State’s efforts to assess methods for reducing greenhouse gas emissions within California’s overall strategy to mitigate anthropogenic climate change.

US EPA's Role in Regulating CCS

In December 2010, the US EPA finalized regulations creating a new Class VI well, geologic sequestration of carbon dioxide, within the US EPA Underground Injection Control (UIC) Program.  General information on Class VI wells is available through the following link:

To file an application for a Class VI well, contact US EPA, Ground Water Office, WTR-9 75 Hawthorne St., San Francisco, California 94105. (415) 972-3971.

The Division’s Role in Developing CCS Technologies

Assembly Bill 1925 (Blakeslee, Chapter 471) required the California Energy Commission, in coordination with the Department of Conservation’s Division of Oil, Gas, and Geothermal Resources and the California Geological Survey to prepare a report recommending how the State could facilitate the adoption of geologic carbon sequestration. The Phase 1 part of the report may be obtained through the following link:

The Division was an active member on the Interstate Oil and Gas Compact Commission’s Geological CO2 Sequestration Task Force that examined the technical, policy and regulatory issues related to safe and effective storage of CO2 in the subsurface (depleted oil and natural gas fields, saline formations and coal beds). The IOGCC report, Carbon Capture and Storage: A Regulatory Framework for States, is available through the following link: