EXH2024030803

PCHBPollution Control Hearings Board of the State of Washington

For additional copies of these guidelines, contact: Department of Ecology Publications Office PO Box 47600 Olympia, WA 98504-7600 Telephone: (360) 407-7472 The Department of Ecology is an equal opportunity agency and does not discriminate on the basis of race, creed, color, disability, age, religion, national origin, sex, marital status, disabled veteran's status, Vietnam Era veteran's status or sexual orientation. For more information or if you have special accommodation needs, please contact Ecology's Water Division at (360) 407-7256. Ecology Headquarters telecommunications device for the deaf (TDD) number is (360) 407-6006. Ecology Regional Office TDD numbers are as follows: SWRO (TDD) (360) 407-6306 NWRO (TDD) (206) 649-4259 CRO (TDD) (509) 454- 7673 ERO (TDD) (509) 458-2055 AR 030807 Table of Contents Acknowledgements .................................................................................................................... iii Section 1: Introduction ............................................................................................................. 1 What Are Water Quality Standards? .............................................................................. 1 How Are the Standards Used? ....................................................................................... 2 Overview of Guidelines .................................................................................................. 3 Section 2: Surface Water Quality Standards ............................................................................. 4 Characteristic Uses and Beneficial Uses ......................................................................... 4 Wetland Beneficial Uses ................................................................................................ 6 Water Supply (domestic, industrial, agricultural) ................................................ 6 Stock Watering ................................................................................................. l0 Fish and Shellfish .............................................................................................. 10 Wildlife Habitat ................................................................................................. 12 Recreation ...... ................................................................................................. 14 Commerce and Navigation ................................................................................ 15 Aesthetics ......................................................................................................... 16 Other Wetland Beneficial Uses ...................................................................................... 16 Groundwater Exchange ............................................................................. . ....... 16 Stormwater Attenuation .................................................................................... 17 Shoreline Stabilization ....................................................................................... 18 Water Quality Criteria ................................................................................................... 19 Antidegradation Policy...................................................................................... 20 Tier 1: Existing uses shall be maintained and protected ...................................... 21 Tier 2: Protection of Water Quality in High Quality Waters ............................... 22 Tier…
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