Regulations & Permits

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

We oversee many state and federal laws designed to protect Washington's land, air, and water. See our laws, rules, & rulemaking page for more information about our current rules and rulemaking.

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Online tool: Beach Monitoring (login required)

(SAW account required)

https://ecology.wa.gov/beach-monitoring

Puget Sound Tide Model

A research tool programmed in Python by David Finlayson for predicting the tides of the Sound. The model was originally developed by Lavelle et al. (1988) at NOAA PMEL and subsequently updated by H. Mofjeld to include the full suite of standard tidal constituents.

https://ecology.wa.gov/puget-sound-tide-model-zip

Freshwater Aquatic Plants Manual

An illustrated guide to some of the more common freshwater aquatic plants found in Washington, such as hydrilla, milfoil, pondweeds, bladderworts, and more.

https://ecology.wa.gov/freshwater-aquatic-plants

Stormwater monitoring

Stormwater monitoring helps us know how well water quality permits are working.

https://ecology.wa.gov/regulations-permits/reporting-requirements/stormwater-monitoring

Frequently flooded areas: Critical Areas Ordinance

Frequently flooded areas are covered by Critical Areas Ordinances promoting safety from floods.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/guidance-for-floodplains-critical-areas-ordinanc

Upland Finfish Hatching & Rearing General Permit

This water quality permit covers certain hatcheries that raise finfish species.

https://ecology.wa.gov/regulations-permits/permits-certifications/upland-finfish-permit

Stormwater Action Monitoring - Administering pooled resources

Credible and transparent administration of Stormwater Action Monitoring program.

https://ecology.wa.gov/regulations-permits/reporting-requirements/stormwater-monitoring/stormwater-action-monitoring/administration

SEPA Supplemental Orca Checklist Guidance

This guidance helps applicants complete the SEPA Supplemental Orca Checklist.

https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-checklist-guidance/sepa-checklist-supplemental-orca-checklist-guidanc

Stormwater Action Monitoring - Effectiveness studies

Learning what works best to reduce urban runoff volumes and pollution in Western Washington.

https://ecology.wa.gov/regulations-permits/reporting-requirements/stormwater-monitoring/stormwater-action-monitoring/sam-effectiveness-studies

200923 phonein NWIW hearing

Sept. 23 phone in NWIW hearing transcript

https://ecology.wa.gov/200923-phonein-nwiw-hearing

Addendum: Detailed information about Washington’s ocean resources and uses

Addendum to accompany Director Maia Bellon's statement against offshore oil drilling in Washington

https://ecology.wa.gov/addendum-detailed-information-about-washington-s

Interpretive Statement on Subdivision SEPA Exemptions

SEPA Interpretive Statement

https://ecology.wa.gov/index-sea-interpretive-statement

200922pm NWIW hearing

200922pm NWIW hearing transcript

https://ecology.wa.gov/200922pm-nwiw-hearing

NWIW-Kalama presentation, Sept. 17, 2020

PowerPoint presentation provided at the Sept. 17, 2020, public hearing for the NWIW-Kalama project.

https://ecology.wa.gov/200917-nwiw-hearing-presentation

Chehalis draft EIS - meeting handout for the proposed Chehalis River Basin Flood Damage Reduction Project

This handout provides an overview of the process and the ground rules for participating in the hearing.

https://ecology.wa.gov/chehalisdeis-handout-english

Existing commercial net pens in Puget Sound

Map of existing commercial net pens in Puget Sound as of 2017

https://ecology.wa.gov/existing-pens-in-puget-sound-map

200922am NWIW hearing

Sept. 22 a.m. NWIW hearing transcript

https://ecology.wa.gov/200922am-nwiw-hearing

Overview SEPA Draft Environmental Impact Statement for the Proposed Chehalis River Basin Flood Damage Reduction Project

This focus sheet describes the environmental review process and the public comment period with an overview of the applicant's proposed project.

https://ecology.wa.gov/chehalisdeis-focussheet-english

ThankYouLetter

Transcribed thank you letter from child that attended a class at Padilla Bay.

https://ecology.wa.gov/padillabaythankyouletter

Borrador de la Declaración del Impacto Ambiental para el proyecto propuesto de reducción de daños por inundaciones en la cuenca del Río Chehalis

Esta hoja de enfoque describe el proceso de revisión ambiental y el período de comentarios públicos con una visión general del proyecto propuesto por el solicitante.

https://ecology.wa.gov/chehalisdeis-focussheet-espanol