Due to public health concerns related to the spread of the novel corona virus (COVID-19), the Energy Facility Site Evaluation Council office (EFSEC) is closed to the public as of March 16, 2020. All EFSEC staff are telecommuting until further notice and EFSEC operations will continue remotely. You may reach EFSEC by phone (360) 664-1345 or by email efsec@utc.wa.gov during regular business hours, 8 am – 5 pm, Monday through Friday. EFSEC Council meetings will be held by teleconference until further notice. Please check this site regularly for updates.

Columbia Generating Station Permits

NPDES Modification 2019

Document Title	Document Date
NPDES Administrative Extension	09/13/2019
Application for Renewal of NPDES Permit No. WA002515-1	04/30/2019
2019 NPDES Permit Modification	03/19/2019
NPDES Permit Modification Fact Sheet Amendment No.2	03/19/2019
NPDES Permit Modification Fact Sheet Errata No. 2	03/19/2019

NPDES

Document Title	Document Date
NPDES Administrative Extension	09/13/2019
NPDES Permit Effective Dates 09/30/2014 - 10/31/2019	11/01/2014
NPDES Permit Effective dates 05/25/2006 - 05/25/2011	05/25/2006
NPDES Permit Effective dates 4/9/2001 - 4/9/2006	04/09/2001

EFSEC - The State of Washington Energy Facility Site Evaluation Council

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Energy Facilities

Columbia Generating Station Permits

NPDES Modification 2019

NPDES