Compliance Proceeding
Original Proceeding
Public Participation
- Public Adviser's Office
- Power Plant Siting Proceedings FAQs
- Power Plant Siting or Licensing Process
- Six Phases of the Power Plant Siting Process
- Public Participation in the Siting Process: Practice and Procedure Guide (PDF File, 3.3 mb)
- Summary of Typical Public Involvement Opportunities in Energy Commission Siting Cases
- Public Adviser's Presentations and Printed Materials
- Commission Siting Division
- Title 20
Calif. Code of Regulations - Acronyms and Definitions Used in Siting Cases
- Energy Commission News Releases
To sign up for this project's e-mail ListServer, please enter the following information completely:
Mariposa Energy Project Power Plant Licensing Case
Docket Number:
09-AFC-03
(Application For Certification)
Committee Overseeing This Case:
Karen Douglas, Commissioner
Presiding Member
Jeffrey D. Byron, Commissioner
Associate Member
Hearing Officer: Kenneth Celli
Key Dates
- 06/15/2009 - Application for Certification (AFC) filed
- 08/26/2009 - Commission accepts AFC as "data adequate."
- 11/08/2010 - Commission staff releases Staff Assessment.
- 12/16/2010 - Commission staff releases Supplemental Staff Assessment.
- 11/08/2010 - Commission staff releases Staff Analysis.
- 4/13/2011 - Committee releases Presiding Member's Proposed Decision.
- 5/18/2011 - Commission approves Application For Certification.
GENERAL DESCRIPTION OF PROJECT
Mariposa Energy, LLC (Mariposa Energy) filed an Application for Certification (AFC) on June 15, 2009 for the Mariposa Energy Project (MEP). This proposed project would have a nominal capacity of 200 megawatts (MW). The facility would be a simple-cycle generating facility consisting of four GE LM6000 PC-Sprint natural gas fired combustion turbine generators, and associated equipment. Linear facilities would include a new 580 feet natural gas pipeline and a new 1.8 mile water connection with the Byron Bethany Irrigation District.
The proposed project site is in northeastern Alameda County, approximately 7 miles northwest of Tracy, 7 miles east of Livermore, 6 miles south of Byron, and approximately 2.5 miles west of the community of Mountain House. The facility would be located southeast of the intersection of Bruns Road and Kelso Road on a 10-acre portion of a 158-acre parcel (known as the Lee Property) immediately south of the Pacific Gas and Electric Company (PG&E) Bethany Compressor Station and 230-kilovolt (kV) Kelso Substation.
Energy Commission Facility Certification Process
The Energy Commission's facility certification process carefully examines public health and safety, environmental impacts and engineering aspects of proposed power plants (50 MW and greater) and all related facilities such as electric transmission lines, natural gas pipelines, etc. The Energy Commission is the lead agency under the California Environmental Quality Act (CEQA) and has a certified regulatory program under CEQA. Under its certified program, the Energy Commission is exempt from having to prepare an environmental impact report. Its certified program, however, does require environmental analysis of the project, including an analysis of alternatives and mitigation measures to minimize any significant adverse effect the project may have on the environment.
For Questions About This Siting Case Contact:
For Questions About Participation In Siting Cases Contact:
Public Adviser
California Energy Commission
1516 Ninth Street, MS-12 Sacramento, CA 95814
Phone: 916-654-4489
Toll-Free in California: 1-800-822-6228
E-mail: PublicAdviser@energy.state.ca.us
News Media Please Contact:
Media & Public Communications Office
Phone: 916-654-4989
E-mail: mediaoffice@energy.state.ca.us