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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NOx reductions alt text document

Arrow showing past & current NOx reductions in comparison to our goal and future reductions using VW settlement funds

https://ecology.wa.gov/20200407-noxreductionsarrow-alt

SMP Amendments History 1971-2016

A list of changes to local shoreline master programs from 1971 through 2016

https://ecology.wa.gov/smp-amendments-history-december-2016

PRIORITY PROCESSING OF HEAT PUMP APPLICATIONS

WATER RESOURCES PROGRAM POLICY for PRIORITY PROCESSING OF HEAT PUMP APPLICATIONS

https://ecology.wa.gov/pol_2020

Spokane County's Second 10-Year Limited Maintenance Plan for Carbon Monoxide

State Implementation Plan Revision for Spokane County Second 10-Year Limited Maintenance Plan for Carbon Monoxide

https://ecology.wa.gov/spokaneco

Benton Clean Air Agency General Air Quality Rules

Including Benton Clean Air Agency rules into the State Implementation Plan

https://ecology.wa.gov/bentoncombinedfilessubmittal

Letter to EPA for Partial Withdrawal of SIP Submittal

Letter to EPA to withdraw part of Prevention of Significant Deterioration Rules into the State Implementation Plan

https://ecology.wa.gov/withdrawalltrnewpsdghgsept52014

The Kent, Seattle, and Tacoma Second 10‐Year Limited Maintenance Plan for Particulate Matter (PM10)

State Implementation Plan Revision for a Second 10-Year Particulate Matter (PM10) Maintenance Plan for three Puget Sound areas

https://ecology.wa.gov/seattlekenttacomalimitedmaintenanceplanpm10

Infrastructure State Implementation Plan for 1997 Ozone Standard

State Implementation Plan Certification for the 1997 8-Hour Ozone Standard

https://ecology.wa.gov/infrastructuresip1997ozonefinal2

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

Ecology's contained-in determination policy memo

Ecology's policy about contained-in determinations.

https://ecology.wa.gov/contained-in-determination-memo

Shoreline Master Program Periodic Review deadlines: 2023

This policy applies to the jurisdictions that have a statutory deadline for SMP periodic reviews under RCW 90.58.080(4)(b)(iv)

https://ecology.wa.gov/policy-and-interpretive-statement-shoreline-master

Shellfish Interagency Permitting Team Phase I Report May 2016

Washington State's Shellfish Initiative Phase I report completed by the Interagency Permitting Team in May 2016

https://ecology.wa.gov/shellfish-interagency-permitting-team-phase-i-repo

2018-2023 Municipal permit recommendations from Stormwater Work Group

Overall recommendations for RSMP funding and administration through the permits, Recommendations for the S8.B Status and Trends Monitoring, Recommendations for S8.C Effectiveness Studies, and Recommendations for S8.D Source Identification and Diagnostic Monitoring.

https://ecology.wa.gov/finals8recommendations1june2016

Spokane River Minimum Instream Flow Recommendations (WAC 173-557; 173-555) 01/27/15

Spokane River Minimum Instream Flow Recommendations - Rusty Post, Ecology Watershed Planning August 1, 2012 WAC 173-557; 173-555 Water Resources Management Program (WRMP) for the Spokane River and Spokane Valley Rathdrum Prairie (SVRP) Aquifer and amendment to WAC 173-555-010.

https://ecology.wa.gov/spokane-river-minimum-instream-flow-recommendation

EAP Soos Creek TMDL 2023

EAP Drone Checklist - Soos Creek TMDL 2023

https://ecology.wa.gov/eap-soos-creek-tmdl-2023

Bill Request Z-0445.2

Creating a dredge and fill permit program and providing authority for a fee structure to support the program.

https://ecology.wa.gov/bill-request-z-0445-2

Washington State Climate Resilience Strategy Summary - English

Climate Resilience Strategy Summary in English

https://ecology.wa.gov/english-washington-state-climate-resilience-strategy-summary

Washington State Climate Resilience Strategy Summary - Chinese

Climate Resilience Strategy Summary in Chinese

https://ecology.wa.gov/chinese-climate-resilience-strategy-summary

Washington State Climate Resilience Strategy Summary - Spanish

Climate Resilience Strategy Summary in Spanish

https://ecology.wa.gov/spanish-climate-resilience-strategy-summary