Washington Administrative Code
Title 173 - Ecology, Department of (See also Titles 197, 317, 372, and 508)
Chapter 173-201A - Water quality standards for surface waters of the state of Washington
Part III - ANTIDEGRADATION
- Section 173-201A-300 - Description
- Section 173-201A-310 - Tier I - Protection and maintenance of existing and designated uses
- Section 173-201A-320 - Tier II-Protection of waters of higher quality than the standards
- Section 173-201A-330 - Tier III-Protection of outstanding resource waters
- Section 173-201A-332 - Table 332-Outstanding resource water designations by water resource inventory area (WRIA)
- Section 173-201A-400 - Mixing zones
- Section 173-201A-410 - Short-term modifications
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