Street, Stormwater, and Development Standards

The adopted current version of the City of Mill Creek Street and Development Standards are found here: 2022 Mill Creek Standard Plans.

The 2022 version supersedes all previous versions as of January 20, 2022.

City of Mill Creek Street and Development Standard Details references the most recent edition of the "WSDOT Standard Specifications", which is the Standard Specifications for Road, Bridge, and Municipal Construction published by the Washington State Department of Transportation (WSDOT).  To access this document online and for more information, go to Standard Specifications by Washington State Department of Transportation.

The city coordinates with the Washington State Department of Transportation (WSDOT) and Snohomish County for traffic mitigation requirements and development impacts to Bothell-Everett Highway (State Route 527) and 132nd Street NE (State Route 96).  Additional requirements may apply to developments along these streets in Mill Creek which will further amend the City Standard Details.

Adopted Stormwater Manual for Design

The City of Mill Creek uses the 2014 Revision of the 2012 Department of Ecology Stormwater Management Manual for Western Washington.

To access this document online and for more information, go to Washington State Department of Ecology.

Construction Stormwater General Permit

Regulated construction sites, including both new development and redevelopment, may need to be approved by the Washington State Department of Ecology for coverage under the Construction Stormwater General Permit.  This coverage, and the requirements of the permit, are additional to permit and approval requirements required by the City of Mill Creek for stormwater related design and management.

For information on how to obtain coverage under the Washington State Department of Ecology Stormwater General Permit, please go to:  Ecology Construction Stormwater General Permit .

Industrial Stormwater General Permit

Industrial facilities that discharge stormwater need to obtain coverage under the Washington State Department of Ecology Industrial Stormwater General Permit.

For information on how to obtain coverage under the Washington State Department of Ecology Industrial Stormwater General Permit, please go to:  Ecology Industrial Stormwater General Permit