One more trail work opportunity for Sunday 4/28, if you can't make the Blue Hills one, this one is in Lexington at Beaver Brook North. This is part of the Western Greenway, which NEMBA supports and has helped develop:

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Dear Friends of the Beaver Brook Reservation,

We completed about half of the landscape fabric installation to the
long boardwalk on the Western Greenway Trail west of the Avalon at
Lexington Hills housing complex this past Sunday. We are scheduling a
second work date for this coming Sunday, April 28 to finish the work
before the grass gets a head start this season. We will meet at 12:30
at the Cart Path Lane trail entrance off of Walnut Street in
Lexington. Tools will be provided but if you have a hammer or staple
gun, please bring it. Join us later in the afternoon if you can't meet
us at 12:30.

Thank you.

John Dieckmann
Keith Ohmart
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-Adam