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Oregon Effluent Limitations: What you need to know

Governing Law and Regulations

National Pollutant Discharge Elimination System (NPDES) permit program: Oregon Administrative Rules (OAR) 340-045-0035

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Water quality standards: OAR 340-041-0001 to 340-041-0350

Antidegradation: OAR 340-041-0004

Total maximum daily loads (TMDLs) program: OAR 340-042-0025 to 340-042-0080

Public participation: OAR 340-042-0050

Regulatory Agencies

Oregon Department of Environmental Quality (DEQ) Water Quality Division

U.S. Environmental Protection Agency (EPA) Region 10

See ADDRESSES & CONTACTS for addresses and telephone numbers.

See national section for basic information and federal regulations.

Comparison: State vs. Federal

Rules. Oregon has adopted by reference the federal effluent limitations. If DEQ determines that the federal effluent limitations are inapplicable, the limitations will be determined on a case-by-case basis. Effluent limitations are included in the state's NPDES permits. For more information about the permits, see the state section NPDES PERMIT. For information on obtaining variances from water quality-related effluent limitations, see the state section WASTEWATER VARIANCES.

The state has also adopted regulations for the implementation of TMDLs under the Clean Water Act (CWA). See the national section EFFLUENT LIMITATIONS for more information about TMDLs.

Administration and enforcement. DEQ's Water Quality Division administers and enforces the state's water quality program. The Division is responsible for including effluent limitations in facility permits and enforcing these requirements.

State Requirements

ANTIDEGRADATION

OAR 340-041-0004

Oregon's antidegradation policy was established to guide decisions that affect water quality such that unnecessary further ...


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State Requirements

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Oregon Effluent Limitations Resources

Effluent Limitations Products

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