Northwest Association of Environmental Professionals

Viewing of NAEP Webinar: New WOTUS Definition (Portland)

  • Monday, January 30, 2023
  • 11:00 AM - 12:00 PM
  • Jacobs, 2020 SW 4th Avenue (Portland)
  • 21


Registration is closed

Join the Northwest Association of Environmental Professionals (NWAEP) for an in-person screening of the first of NAEP's 2023 Webinar Series.

EPA/US Army Corps of Engineers’ Final Rule:
Revised Definition of “Waters of the United States”

Monday, January 30, 2023
11:00 AM – 12:00 PM

Webinar Viewing hosted live (no recording will be available)
in Portland at  Jacobs, 3015 SW 1st Ave, 3rd floor, Hood Conference Room. (Orange MAX line – Lincoln SW 3rd)


On 18 January 2023, the US Army Corps of Engineers/EPA’s Revised Definition of “Waters of the United States” was published in Federal Register Vol. 88, No. 11. The Final Rule, which defines what waters are protected by/subject to the Clean Water Act (CWA), becomes effective nationally on 20 March 2023. As stated in the summary: In developing this rule, the agencies considered the text of the relevant provisions of the Clean Water Act and the statute as a whole, the scientific record, relevant Supreme Court case law, and the agencies’ experience and technical expertise after more than 45 years of implementing the longstanding pre-2015 regulations defining “waters of the United States.”

After awaiting the formal publication of the Final Rule since fall 2022, NAEP will host a webinar to provide an informative and concise summary of the WOTUS definition’s technical, legal, and regulatory history, led by a panel of experts. Their discussion will also clarify the technical differences between the Final Rule and the current, pre-2015 WOTUS definition, explain the impact on the regulated community that is likely to result, and consider other effects. 

NAEP has gathered three expert panelists — Ward Marotti, Peter McGrath, and Carland Holstead, PWS — to provide their insight, which has evolved from decades of wide-ranging professional WOTUS experience.

If you're in Portland, we hope you'll join your fellow NWAEP colleagues for the in-person screening of this timely and informative NAEP webinar, focused on how the soon-to-be-implemented changes to one of the United States’ most significant environmental regulations may impact the nation. There will be much to discuss!

Questions about the NWAEP webinar viewing? Contact NWAEP board member Kim Wetzel

NAEP's 2023 Webinar Series Continues...
Several key administrative and judicial decisions are anticipated soon that could change the face of our environmental practice for years to come. The NAEP is committed to helping its chapters and members stay informed of these important developments through a ‘hot topic’ series.

To that end, in addition to the January 30th "EPA/USACE Final Rule: Revised Definition of 'WOTUS'" webinar, NAEP is planning future webinars (dates TBA) on CEQ’s proposed Phase II NEPA regulations and The Supreme Court ruling in the “Sackett II” WOTUS case.

NWAEP hopes to host in-person viewings of these other webinars too — stay tuned!

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Note: If you cannot attend this in-person viewing, you will need to register separately with NAEP in order to gain access to the webinar. For more information, please visit NAEP's website.

Northwest Association of Environmental Professionals     •     PO Box 11583, Portland, OR 97211         TheNWAEP at gmail dot com 


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