Environmental impact statement (EIS)
Summary
We recommended an Addendum to the 1972 State Environmental Policy Act (SEPA) Environmental Impact Statement (EIS) prepared by the Washington State Thermal Power Plant Site Evaluation Council after identifying no new or significant unavoidable impacts from the changes proposed in the 6th request for amendment to the Site Certification Agreement.
Description
We reviewed and considered a number of historical SEPA documents and other environmental information, as well as conducting a site visit on June 18, 2019.
In two memos issued on November 17, 2020, we identified no new or significant unavoidable impacts from: (1) the proposed installation of the Advanced Gas Path Package in turbine Units 1 and 2; or (2) extending to 2028 the deadline for construction of Units 3 and 4. As a result, staff recommended an Addendum to the 1972 SEPA EIS prepared by the Washington State Thermal Power Plant Site Evaluation Council.
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