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Record No: CB 120044    Version: 1 Council Bill No: CB 120044
Type: Council Bill (CB) Status: Full Council Agenda Ready
Current Controlling Legislative Body Transportation and Utilities Committee
On agenda: 5/17/2021
Ordinance No:
Title: AN ORDINANCE relating to the Stormwater Code Update; amending Chapters 22.800, 22.801, 22.803, 22.805, and 22.807 of the Seattle Municipal Code.
Sponsors: Alex Pedersen
Supporting documents: 1. Summary and Fiscal Note, 2. Summary Ex A – Directors’ Report and Recommendation, 3. Summary Ex B – Environmentally Critical Areas : Best Available Science Review, 4. Summary Ex C - Draft Stormwater Manual (Draft Director's Rule), 5. Summary Ex D - Ecology Letter on Draft Stormwater Code and Manual, 6. Summary Ex E - Drainage System Requirements Director's Rule, 7. Central Staff Memo, 8. Presentation
CITY OF SEATTLE
ORDINANCE __________________
COUNCIL BILL __________________
title
AN ORDINANCE relating to the Stormwater Code Update; amending Chapters 22.800, 22.801, 22.803, 22.805, and 22.807 of the Seattle Municipal Code.
body
WHEREAS, The City of Seattle is committed to protecting local creeks and lakes, the Duwamish River and Puget Sound; and
WHEREAS, Seattle Public Utilities fosters healthy people, environment, and economy by partnering with the community to equitably manage water and waste resources for today and for future generations; and
WHEREAS, The City of Seattle uses stormwater regulations to protect people, property, and the environment from damage related to stormwater runoff, for the purposes stated in Section 22.800.020 of the Seattle Municipal Code; and
WHEREAS, The City of Seattle is subject to the 2019-2024 Phase I Municipal Stormwater Permit (National Pollutant Discharge Elimination System and State Waste Discharge General Permit for Discharges from Large and Medium Municipal Separate Storm Sewer Systems) issued July 1, 2019 ("MS4 Permit"), by the State of Washington Department of Ecology ("Ecology") in compliance with the federal Clean Water Act and state law, as effective August 1, 2019; and
WHEREAS, the MS4 Permit requires the City's Stormwater Code and associated technical manual include minimum requirements, thresholds, definitions, and other specified requirements, limitations and criteria, determined by Ecology to be equivalent to Appendix 1 of the MS4 Permit for new development, redevelopment, and construction, and that maintenance and source control must be as least as protective as or functionally equivalent to Ecology's Stormwater Management Manual for Western Washington, 2019 edition; and
WHEREAS, the MS4 Permit also requires the City evaluate and, if necessary, revise the Stormwater Code to incorporate low impact development principles and best management practices; and
WHEREAS, this ordinance, to be known as the 2021 Storm...

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