

Federal Energy Regulatory Commission (FERC)
www.ferc.gov/industries/hydropower.asp
Water Quality Standards
www.ecy.wa.gov/programs/wq/swqs/index.html
A 401 certification is an acknowledgement that water quality standards will
be met. The standards set the protective levels for pollutants throughout the
state.
Water Quality Assessments (303[d] list) and Total Maximum Daily
Loads
www.ecy.wa.gov/programs/wq/303d/index.html
The Clean Water Act requires that waters that do not meet water quality
standards are identified and steps taken to clean them up. These steps have to
be taken in order to receive a 401 certification.
Water Resources Instream Flows
www.ecy.wa.gov/programs/wr/instream-flows/isflowhome.html
River flow levels to protect fish are found in 401 water quality
certifications. Flows are often established using instream flow-setting
methods.
Ecology’s Environment Assessment Program (EAP)
www.ecy.wa.gov/programs/eap/index.html
This group performs monitoring, total maximum daily load analysis,
engineering review and other technical work for many projects including
review of data submitted for 401 certifications.
Managing Washington's Coastline - Washington State's Coastal Zone
Management Program (CZM)
www.ecy.wa.gov/biblio/0006029.html
Under the federal Coastal Zone Management Program, Washington State has
adopted its own management programs in order to meet the goals of
protection, restoration, and appropriate development of its 15 coastal
counties. A 401 water quality certification is not issued until CZM
consistency has been determined.
Spill response
www.ecy.wa.gov/programs/spills/spills.html
Spill response plans for on-site oil discharges are found as conditions in
401 water quality certifications.
7Q-10 Guidance for High Flows
www.ecy.wa.gov/programs/wq/ferc/7q10_guidelines.pdf (PDF)
An exemption to the dissolved gas water quality standard is made when the
natural flood flows are expected to occur for seven consecutive days once every
ten years (7Q-10). Ecology has developed guidance for how to calculate these
flows for the Columbia and Snake Rivers as well as how to calculate design
flows.
Contact us for more information
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