WSR 18-23-104
[Filed November 20, 2018, 3:16 p.m.]
Notice of Interpretive and Policy Statements
Under RCW 34.05.230, this is notice about the policy statement described in the table below.
To obtain copies, please:
Click on the links below to download; or
Submit a records request to ecology's Public Records Officer (email) following the instructions here: Public Records Requests Webpage.
Title and Brief Description
Revision Date
Water Quality Program Policy 1-11 Chapter 1: Washington's Water Quality Assessment Listing Methodology to Meet Clean Water Act Requirements (Publication 18-10-035). This policy describes the methodologies for how assessment units (AU) will generally be assessed for each water quality standard parameter (for example, bacteria or dissolved oxygen) and then placed in one of five categories, ranging from waters that meet tested standards (Category 1) to impaired waters (Category 5). The different listing categories described in this water quality assessment policy identify the status of the AU for each parameter and may signify future actions need [needed] to improve or protect water quality.
Updated 11/15/2018
Also available is the Water Quality Program Policy 1-11 Chapter 1: October 2018 Public Review Response to Comments (Publication 18-10-036). This document provides a response to comments received on the public review draft of Water Quality Policy 1-11 that was held February - April 2018.