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Visit our new ECOS Calendar

ECOS convenes two general membership meetings per year, an annual membership meeting and a spring membership meeting. In addition, ECOS hosts multiple project-based meetings. For more information about ECOS annual and spring events, contact Lia Parisien at 202-266-4931. For specific, project focused events, please contact the individual projects managers identified.

Upcoming Events

Date Title Sponsor
Oct 21, 2015 2015 State Environmental Protection (STEP) Meeting-Achieving Air Quality: The Clean Power Plan & More


Second Draft Agenda


Online Registration


FULL REGISTRATION- $695 IMPORTANT NOTES-Cancellation by 9/9 subject to $35 fee. Non-emergency cancellation after 9/9 non-refundable. ***ECOS cannot comp attendees who plan to attend one session only, unless they are speakers for that session.


Attendees should make their own room reservations at

The Omni Shoreham Hotel

at (800) 843-6664. The ECOS room block is almost full. Rooms may still be reserved at the Omni Shoreham Hotel, and they may be available at a promotional rate close to the federal per diem rate. For more information, call the Omni Shoreham Reservation line at 1-202-234-0700. Applicable city and state hotel taxes are currently 14.5%. Check-in time is 4 p.m., and check-out time is 11 a.m. ***The hotel has a 72-hour-prior cancellation policy. Inquire with hotel for details.

Other Hotel Options:

The Embassy Row Hotel


The Omni Shoreham Hotel is served by Regan National Airport (8 miles), Dulles International Airport (30 miles) and the Baltimore-Washington International Airport (45 miles).

The hotel is accessible via taxi, shuttle, metro and train. For more detailed information please visit the hotel's web page.

Transportation Details

Apr 11, 2016 - Apr 13, 2016 2016 ECOS Spring Meeting