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February 11, 2008: EPA formally approves the Washington State Surface Water Quality Standards
February 8, 2008: Washington State Department of Ecology Gas Abatement Plan Approval (PDF)
Supplement letter to the Gas Abatement Plan (PDF)
Oregon Department of Environmental Quality (Oregon waiver, water quality standards, etc.)
Ecology's expectations for calculating TDG:
Contact us for more information
Copyright © Washington State Department of Ecology. See http://www.ecy.wa.gov/copyright.html.
