Day 1 (Half Day) | May 16

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10:00 to 12:00pm

Pre-Conference Activity: Open House

Eastern Washington BMP Effectiveness Studies

Coordinated by the Eastern Washington Stormwater Group

Pursuant to the Eastern Washington (EW) Phase II Municipal Stormwater (MS4) Permit Section S8.B, permittees are required to "collaborate with other permittees to select, propose, develop, and conduct Ecology-approved studies to assess, on a regional or sub-regional basis, the effectiveness of permit-required stormwater management program activities and best management practices (BMPs)" [1]. In response to these requirements, the Eastern Washington Stormwater Group (EWSG), which consists of staff from the cities and counties covered under the permit, worked collaboratively and identified 24 study ideas (Phase 1) and developed a ranked list of the top 14 studies (Phase 2). Phase 1 and Phase 2 were submitted to Washington State Department of Ecology (Ecology) on June 30, 2015 and June 30, 2016 respectively. These studies are commonly referred to as the "EW Effectiveness Studies Development Project" and the current Phase 3a focuses on developing the detailed study design proposal for the 13 studies listed below. Ecology Gross Grants have assisted in the initial development of study ideas and detailed study design proposals, and as part of the grant requirements, the EWSG is hosting a Public Open house. During this time, the public is welcome to stop by and view posters for each of the studies which provide an overview the reason why the studies are being conducted, plans for conducting the studies, and how these studies may improve the stormwater management programs in eastern Washington.

12:30 to 1:00pm


Light snacks & beverages will be served. Lunch on your own.

1:00 to 5:00pm

Workshop TracksClick a workshop below to expand.

Education & Outreach Workshop

Methods for Developing, Implementing, and Evaluating Effective E&O Programs

Aimee Navickis-Brasch, HDR; Amanda Hess, Spokane County; Abbey Stockwell, Ecology; Janet Geer, City of Bothell; Jessica Shaw, City of Wenatchee; Mary Rabourn, King County; Tiffany O’Dell, Pierce County

Stormwater E&O programs strive to increase public awareness and encourage behavior change that will lead to improved water quality. However, achieving these goals and producing measureable results that demonstrate the effectiveness of E&O programs is challenging. This workshop will focus on providing attendees with information and examples that will assist them in developing and implementing targeted E&O programs as well as methods for measuring the impact of the program. The presentations during this workshop will focus on:

  • An overview of E&O Permit Requirements for both Phase I and Phase II permittees.
  • Determining what your message is. How to choose the hot topic, the requirement that will get you the great results.
  • Strategies for effectively communicating your program message.
  • Tools for creating effective educational programs that focus on changing public behavior.
  • Case study presentations on two established E&O programs including: Don’t Drip and Drive Vehicle Leaks Program and Dump Smart Mobile Business Program. The presentations will cover the research that provided the basis for developing these programs, how the programs were implemented, approaches for evaluating the effectiveness of these programs, and lessons learned.
  • A new QAPP Template developed specifically for evaluating the effectiveness of E&O programs.
Stormwater Manual Training Workshop

SWMMWW Training

Doug Howie, Department of Ecology

This workshop will cover the 9 Minimum Requirements in the Stormwater Management Manual for Western Washington (SWMMWW) including:

  • How to evaluate the thresholds when determining New/Redevelopment criteria.
  • The difference between “Retrofit” and New/Redevelopment.
  • The requirements in the application of the Minimum Requirements with emphasis on Minimum Requirements 5, 6, and 7.
  • Infeasibility Criteria: What it is and what it isn’t.

The training is presented from the point of view of a typical engineer who is developing the Stormwater Site Plan and looking at the decisions that he/she must make (from site assessment, through to final design and plan submission) with regards to New/Redevelopment.

Stormwater BMP Infiltration Testing Workshop

Determining Stormwater BMP Infiltration Rates: Requirements, Approaches, Emerging Methods, and Current Research

Erick Fitzpatrick, AHBL; Andrew Austreng, Aspect; Scott Kindred, Kindred Hydro; Tony Allen, WSDOT; Tom Atkins, Aspect; Craig Doberstein, CPD Solutions; Aimee Navickis-Brasch, HDR

Determining representative infiltration rates for a project site is critical to BMP design, particularly when meeting Ecology requirements related to low impact development and onsite management of stormwater runoff. This workshop will provide attendees with a broad understanding of the requirements for determining infiltration rates; as well as approaches, emerging methods, and current research. The presentations during this workshop will focus on:

  • An overview of the SWMMWW and SWMMEW requirements for determining infiltration rates at proposed BMP sites.
  • Selecting appropriate field testing methods and locating test sites.
  • Case studies from project sites in both EWA and WWA including common approaches, challenges, and lessons learned.
  • Highlights of tools available to facilitate meeting permit requirements.
  • Emerging methods for estimate infiltration rates.
  • Overview of current WSDOT research focused on developing a method for estimating saturated hydraulic conductivity from soil grain size parameters and its application to infiltration design, including consideration of soil compaction effects.
5:00 to 7:30pm

Networking Reception

Sponsored by HDR, Inc.

Hors d'oeuvres and beverages will be served.