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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Vantage Data Center - Revised Health Impact Assessment response

Revised Health Impact Assessment (Second Tier Review) response for Vantage Data Center, 11/16/16

https://ecology.wa.gov/vantage-revfinal-2ndtier-ra-111616ada

Appendix 1 to the Phase I Municipal Stormwater Permit

Minimum Technical Requirements or New Development and Redevelopment

https://ecology.wa.gov/2016phasei-appendix1

Phase I Municipal Stormwater Permit Appendi10

Appendix 10. Equivalent Programs for Runoff Controls for New and Redevelopment and Construction Sites

https://ecology.wa.gov/2016phasei-appendix10

Phase I Municipal Stormwater Permit Appendix 11

Appendix 11. Structural Stormwater Controls Project List

https://ecology.wa.gov/2016phasei-appendix11

Phase I Municipal Stormwater Permit Appendix 12

Appendix 12. Annual Report Questions for Cities and Counties

https://ecology.wa.gov/2016phasei-appendix12

SGGP training

2016 Sand & Gravel Permit Training Presentation

https://ecology.wa.gov/2016sandgravelpermittrainingpresentation

Phase I Municipal Stormwater Permit Appendix 13

Appendix 13. Adaptive Management Requirements

https://ecology.wa.gov/2016phasei-appendix13

Phase I Municipal Stormwater Permit Appendix 2

Appendix 2. Total Maximum Daily Load Requirements

https://ecology.wa.gov/2016phasei-appendix2

Phase I Municipal Stormwater Permit Appendix 3

Appendix 3. Annual Report Questions for the Port of Seattle and the Port of Tacoma

https://ecology.wa.gov/2016phasei-appendix3

Phase I Municipal Stormwater Permit Appendix 4

Appendix 4. Annual Report Questions for Secondary Permittees

https://ecology.wa.gov/2016phasei-appendix4

Phase I Municipal Stormwater Permit Appendix 5

Appendix 5. Notice of Intent for Coverage

https://ecology.wa.gov/2016phasei-appendix5

S5.C.6 Structural Stormwater Control excel workbook

Excel workbook to calculate level of effort proposed in the preliminary permit language

https://ecology.wa.gov/2016-ssc-permittee-with-description

Phase I Municipal Stormwater Permit Appendix 6

Appendix 6. Street Waste Disposal

https://ecology.wa.gov/2016phasei-appendix6

Phase I Municipal Stormwater Permit Appendix 7

Appendix 7. Determining Construction Site Sediment Damage Potential

https://ecology.wa.gov/2016phasei-appendix7

Phase I Municipal Stormwater Permit Appendix 8

Appendix 8. Businesses and Activities that are Potential Sources of Pollutants

https://ecology.wa.gov/2016phasei-appendix8

Phase I Municipal Stormwater Permit Appendix 9

Appendix 9. Stormwater Discharge Monitoring

https://ecology.wa.gov/2016phasei-appendix9

2013-2018 Phase I Municipal Stormwater Permit

This permit regulates stormwater discharges in the most highly populated areas in our state.

https://ecology.wa.gov/2016phaseipermit

Phase I Municipal Stormwater Permit 2016 response To Comments

Response to Comments for Permit Modification Effective August 19, 2016

https://ecology.wa.gov/2016responsetocomments

2015 Draft Construction Stormwater General Permit

National Pollutant Discharge Elimination System (NPDES) and State Waste Discharge General Permit for Stormwater Discharges Associated with Construction Activity.

https://ecology.wa.gov/2016cswgpdraft

2015 Draft Construction Stormwater General Permit with Track Changes

National Pollutant Discharge Elimination System (NPDES) and State Waste Discharge General Permit for Stormwater Discharges Associated with Construction Activity.

https://ecology.wa.gov/2016cswgpdraftredline