40 CFR Subpart B
Establishment of Water Quality Standards
June 9, 2020
§
131.10
Designation of uses
§
131.11
Criteria
§
131.12
Antidegradation policy and implementation methods
§
131.13
General policies
§
131.14
Water quality standards variances
§
131.15
Authorizing the use of schedules of compliance for water quality-based effluent limits in NPDES permits
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