City of Mercer Island, Washington - Home City of Mercer Island, Washington - Home Facebook Twitter YouTube
site map
General Information
Civil Service Commission
Design Commission
Parks & Recreation Commission
Planning Commission
Arts Council
Disability Board
Open Space Conservancy Trust
Utility Board
Notify me by Email

Open Space Conservancy Trust

The Trust was established by ordinance on February 10, 1992 (amended May 6, 1996). It was created for the express purpose of receiving and holding such real property, as transferred for open space purposes; for protecting, maintaining and preserving the Open Space Properties; and insuring that the development and use of the Open Space Properties are both consistent and compatible with the intent and purpose of the Trust and the guidelines and polices enacted.

The seven members meet as needed (usually every other month starting in January). Click here to download the Trust's bylaws.  The Trust is staffed by the Parks and Recreation Department.

The Open Space Conservancy Trust plays an instrumental role in partnership with the Parks and Recreation Department to create, coordinate and implement letterboxing. Click here to learn more about letterboxing.

Additional Information

Staff Contact: Alaine Sommargren, Natural Resources Manager at 206-275-7879 or

Length of Term
3rd Thursday of Jan, Mar, May, Jul, Sep, & Nov at 6:00 pm in the Council Chambers at City Hall
Four years running, June 1 - May 31

Email Address
Term Begin
Term End
Marie Bender   Trustee   11/07/2016   05/31/2021  
Carol Lynn Berseth   Trustee   06/05/2018   05/31/2022  
Thomas Hildebrandt   Secretary   06/06/2016   05/31/2020  
Craig Olson   Trustee   06/06/2016   05/31/2020  
Geraldine Poor   Trustee   01/17/2012   05/31/2021  
Rory Westberg   Chair   03/16/2015   05/31/2022  
David Wisenteiner   Trustee(Council)   02/23/2017   12/31/2020  

Calendar Events

Open Space Conservancy Trust Board Meeting
Thursday, September 19, 2019
Open Space Conservancy Trust Board regular meetings are held on the third Thursday of alternating months (Jan, Mar, May, Jul, Sep, & Nov) at 6:00 pm at the City Hall Council Chambers (9611 SE 36th Street, Mercer Island, WA) unless otherwise posted.

  (Read more)

View All Calendar Events...

View All Minutes...

City of Mercer Island Washington | All Rights Reserved 2019| Privacy Policy | printer friendly version Printer friendly version | Site Handcrafted in Ashland, Oregon by Project A