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Synthesis of Street Sweeping Research & Practices: Guiding Program Development & Implementation

This project will assist in the development of a guidance manual that will provide information and tools Permittees can use to develop and/or improve their street sweeping program. This effort is timed to support Permittees in meeting the anticipated 2024-2029 Municipal Separate Storm Sewer (MS4) Permit requirements, enabling these Permittees to implement a street sweeping program by July 1, 2027.

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Providing a platform for Eastern Washington stormwater stakeholders to cooperatively participate in a transparent process to identify, discuss, and develop suggestions under consensus for submission to Ecology prior to the reissuance of the Eastern Washington Phase II Municipal Stormwater Permit.

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EWA Construction Documents

We would like to introduce three new E&O documents created to address construction site issues. Eastern WA permittees working as part of the EWA Stormwater Education & Outreach Working Group identified a need for documents with information on construction BMPs for developers, engineers, planners, review staff, contractors, and construction crews.

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Sunset over a lake in the Gingko Petrified Forest park

EWA Effectiveness Studies

The purpose of the Monitoring and Assessment permit requirement in the Eastern WA Permit is to conduct studies to determine the effectiveness of the Stormwater Management Program and communicate the findings to the region. The effectiveness studies focus on Best Management Practices (BMPs) used by Permittees and include studies focused on operational, or structural BMPS, or education and outreach practices.

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2022 Training from the Department of Ecology and the City of Walla Walla

This training is intended to provide municipal staff whose primary function is to review plans for a general overview of how to review a plan set to ensure compliance with the Permits. You can view all the content from this two-day training via the YouTube playlist linked to the left, or check out the full training page which includes several downloadable materials to help you get the most from this series.

Past Training from Herrera

In 2016 Herrera conducted a series of trainings focused on the fundamental principles of LID and their application. While older, this series is still relevant and you can access the archive here.

Eastern Washington MS4 Phase II 2019-2024 Permit Compliance tables were created by Eastern Washington Phase II permittee Wenatchee.

They are being shared for other Eastern Washington permittees use as a template for your programs.

The intent for sharing these templates is to aid in:

  • Communicating stormwater permit obligations among department management, staff, decision-makers, and programs
  • Identify resource and staffing needs
  • Assigning roles and responsibilities among departments and staff
  • Developing work programs and budgets
  • Tracking permit compliance
  • Generating annual reporting assignments