Research & Data

Use this portal to filter and search for all of our scientific information.

Ecology provides the high-quality science that is the foundation of Washington state environmental policy. Our monitoring, assessment, and modeling services provide a data-rich understanding of our state’s land, air, and water. We provide access to that data through reports, databases, maps and user-friendly online tools.

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DRAFT Manufacturer Plan Guidance

This draft document includes guidance and information for manufacturers of photovoltaic modules.

https://ecology.wa.gov/draft-manufacturer-plan-guidance

draft modification presentation

PDF of presentation slides given during public comment period

https://ecology.wa.gov/draft-modification-presentation

Draft refrigerant management requirements (WAC 173-443) 11-17-22

This is the November 17, 2022 draft requirements for refrigerant management under Chapter 173-443 WAC, Hydrofluorocarbons.

https://ecology.wa.gov/draft-refrigerant-management-requirements-wac-1

Draft rule 11/29/17

This is the draft rule from 11/29/17.

https://ecology.wa.gov/draft-rule-wac-173-400-401-11-29-17

Draft rule (01/04/17)

https://ecology.wa.gov/draft-rule-wac-173-400;401-01-04-17

Draft refrigerant management requirements (WAC 173-443) 9-14-22

This is the September 14, 2022 draft requirements for refrigerant management under Chapter 173-443 WAC, Hydrofluorocarbons.

https://ecology.wa.gov/draft-refrigerant-management-requirements-wac-173

Draft rule 02/22/17

https://ecology.wa.gov/draft-rule-wac-173-400;401-02-22-17

Draft rule 03/20/17

https://ecology.wa.gov/draft-rule-wac-173-400;401-03-20-17

Draft GAP Rule Conceptual Framework for Informal Review

This document provides a narrative description of the concepts being used to draft the GAP rule. It includes changes to the initial ideas presented by the Washington State Department of Ecology (Ecology) in five public webinars from June to November 2020, based on public input and feedback. This document provides information as of the time of release for informal comment.

https://ecology.wa.gov/draft-gap-rule-conceptual-framework-for-informal-r

Draft GAP Rule Language for Informal Review (Definitions and Applicability)

Contains a list of proposed definitions and their applicability to the GAP rule

https://ecology.wa.gov/draft-gap-rule-language-for-informal-review-defin

Draft rule 10/18/17

Annotated rule changes to Chapter 173-400 WAC

https://ecology.wa.gov/draft-rule-wac-173-400;401-10-18-17

Draft rule (11/10/16)

https://ecology.wa.gov/draft-rule-wac-173-400;401-11-10-16

Draft GAP Rule Questions on Mitigation

We are seeking input from the public on the questions in this document on mitigation for the proposed Greenhouse Gas Assessment for Projects (GAP) rule.

https://ecology.wa.gov/draft-gap-rule-questions-on-mitigation

Draft rule (12/06/16)

https://ecology.wa.gov/draft-rule-wac-173-400;401-12-06-16

Draft rule (WAC 173-400;401) 12/20/16)

Draft rule 12/20/16)

https://ecology.wa.gov/draft-rule-wac-173-400;401-12-20-16

Draft rule 401 10/18/17

Annotated rule changes to Chapter 173-401 WAC

https://ecology.wa.gov/draft-rule-401-wac-173-400;401-10-18-17

Draft linkage bill

A bill request for facilitating linkage of Washington's carbon market with the California-Quebec marcket

https://ecology.wa.gov/draft-linkage-bill-z-0485-1

Draft rule changes (not tracked) to 173-441 WAC for Electricity Markets rulemaking (1/23/24)

This document lists the third informal draft rule language changes (not tracked) to Chapter 173-441 WAC (Reporting of Emissions of Greenhouse Gases) for the Electricity Markets rulemaking.

https://ecology.wa.gov/draft-rule-language-wac-173-441-1-24-24

Draft general permit for biosolids

This is the draft statewide general permit for biosolids in Washington.

https://ecology.wa.gov/draft-general-permit-for-biosolids

Draft offset protocol language

Draft offset protocol language for ozone depleting substances projects

https://ecology.wa.gov/draft-offset-protocol-language-173-446-wac-10-1-24