For immediate release: June 1, 2001
Media Contact: MaryAnn Costamagna -- (916) 654-4989

Staff Assessment Released
For Potrero Power Plant

A Preliminary Staff Assessment of the proposed construction and operation of the 540-megawatt Potrero Power Plant Unit 7 Project is now available from the California Energy Commission.

The Preliminary Staff Assessment includes a detailed description of the proposed power project. The report can be viewed and printed from the Energy Commission's Web site at:

Mirant Potrero LLC, a direct subsidiary of Mirant Corporation, proposes to build a combined cycle power generating facility at the site of the existing 360-megawatt Potrero Power Plant.

The Potrero Unit 7 Project would be a 540-megawatt, natural gas-fired combined cycle power generating facility, comprised of two combustion turbines and one steam turbine. If approved, the power plant would operate in conjunction with the existing 360 megawatt Potrero Power Plant, located in the Potrero District of the City and County of San Francisco. The new project would be fed by the existing Portero site natural gas supply and connect to the state's high-voltage transmission system through a proposed new Potrero Power Plant Switchyard, located on site, and two existing PG&E substations.

The Preliminary Staff Assessment is a staff draft document. It is not a Committee or Commission decision or proposed decision. Commission staff prepared this assessment in accordance with the Public Resources Code and the California Environmental Quality Act.

Based upon an analysis of the information currently available, the report presents preliminary conclusions and proposed conditions that apply to the design, construction, operation and closure of the proposed facility, if certified.

Workshops on the Preliminary Staff Assessment are scheduled as follows:

Location: Potrero Hill Neighborhood House (wheelchair accessible)
953 De Haro Street
San Francisco, California
Schedule:Topics to be covered:
Monday, June 11
1-5 p.m.; 6:30-9 p.m.
Executive Summary, Introduction, Project Description, Transmission System Engineering, Waste Management, Transmission Line Safety and Nuisance, Air Quality, Public Health.

Tuesday, June 12
1-5 p.m.; 6:30-9 p.m.
Biological Resources (Aquatic and Terrestrial), Soil and Water Resources, Land Use, and Socioeconomics.
Monday, June 18
1-5 p.m.; 6:30-9 p.m.
Cultural Resources, Visual Resources, Traffic and Transportation, Hazardous Materials Handling, and Worker Safety and Fire Protection.

Tuesday, June 19
1-5 p.m.; 6:30-9 p.m.
Facility Design, Noise, Geology and Paleontological Resources, Power Plant Efficiency, and Power Plant Reliability and Site Alternatives.

Persons requiring information on how to participate in the Energy Commission review of the proposed project should contact Roberta Mendonca, the Energy Commission's Public Adviser, at (916) 654-4489, toll free at (800) 822-6228, or by e-mail at

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