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.
NSIA_ColumbiaRiverkeeper_SaveOurWildSalmon Request for TDG Short-term Mod
A letter from NSIA, Columbia Riverkeeper, and Save Our Wild Salmon requesting a short-term modification to total dissolved gas criteria of WAC 173-201A-200(1)(f)(ii).
https://ecology.wa.gov/nsia_columbiariverkeeper_saveourwildsalmon-request
NoticetoInterestedParties
This is the notice to interested parties that we sent out to all interested stakeholders.
https://ecology.wa.gov/noticetointerestedparties
Formal comment letter to EPA about the Clean Water Act Section 401 rule proposal
These are Ecology's official comments submitted to EPA on the proposed changes to the Clean Water Act Section 401.
https://ecology.wa.gov/oct21-epa-letter
Nonpoint Project Budget Template
Project budget template for Nonpoint projects seeking funding from WQ grants or loans
https://ecology.wa.gov/nonpoint-project-budget-template-v1-0
NRCS Assessment Procedure for Existing Waste Storage Ponds
Review and assessment process for waste storage ponds
https://ecology.wa.gov/nrcs-assessment-procedure-for-existing-waste-stora
Nutrient Source Content Analysis Template
Template for submitting data to CAFO General Permit Annual Reports
https://ecology.wa.gov/nutrient-source-content-analysis-template
Nutrient Sources Applied Template
Template for submitting data to CAFO Annual Report
https://ecology.wa.gov/nutrient-sources-applied-template
OptoRTC Continuous Monitoring and Adaptive Control Aproval
This is the signed functional equivilant document granted by Ecology for OptiRTC CMAC.
https://ecology.wa.gov/optortc-cmac-approval-letter
OutPak Corrugate Washout Functionally Equivalency
Ecology finds OutPak Corrugate Washout functionally equivalent to Best Management Practice C154 (Concrete Washout Area) for stormwater management.
https://ecology.wa.gov/outpakwashout
Draft Aquatic Noxious Weed Control NPDES General Permit
Aquatic Noxious Weed Control NPDES General Draft Permit.
https://ecology.wa.gov/noxiousdraftfs100511
Aquatic Noxious Weed Control NPDES General Permit
The general permit covers the indirect discharge of herbicides, adjuvants, and marker dyes into estuaries, marine areas, wetlands, along lake shorelines, rivers, streams, and other wet areas to manage Spartina and freshwater noxious weeds in Washington. An indirect discharge occurs when there may be incidental overspray or dripping of a chemical from the treated plants into waters of the state.
https://ecology.wa.gov/noxiouspermitfinal050712
Aquatic Noxious Weed Control NPDES General Permit Response to Comments
Response to Comments for the Aquatic Noxious Weed Control NPDES General Permit.
https://ecology.wa.gov/noxiousweedappendixdresponsetocomment
Willapa-Grays Harbor Oyster Growers Association v. Ecology Dismissal
This is the legal dismissal order for the Willapa-Grays Harbor Oyster Growers Association v. Ecology PCHB case
https://ecology.wa.gov/oct-2019-dissmisal-order
Online formal draft presentation Sand and Gravel General Permit
PowerPoint presentaion on the new Sand and Gravel General Permit lanugage.
https://ecology.wa.gov/online-formal-draft-presentation
Early input on MS4 permit reissuance from October 2016 through 2017
This is a compilation of comments from stakeholders giving early input about the reissuance.
https://ecology.wa.gov/october2016earlyinput
Formal Draft Workshop Presentation
This is a presentation of the Sand & Gravel General Permit Draft permit language (October 2015)
https://ecology.wa.gov/onlineformaldraftpresentation
2018 Pretreatment Plan Northern Oyster
2018 pretreatment plans on control for commercial clam beds in Willapa Bay.
https://ecology.wa.gov/northern-2018-pretreatment-plan
2017 Annual Report for Northern Oyster Co.
Annual report reviews Zostera Japonica controls on commercial clam beds in Willapa Bay for Northern Oyster Co.
https://ecology.wa.gov/northern-3007-annual-report-1
Listening Session PowerPoint Slides for 2015 CSWGP Reissuance
2015 Construction Stormwater General Permit Reissuance Listening Session slides explain the schedule, process, and provides forum for feedback.
https://ecology.wa.gov/october2014listening
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