Missing the notice for the trees - Greater Greater Washington:
A leafy canopy makes a street far more desirable and valuable. It's no wonder, then, that residents get very upset when their government removes trees. Sometimes trees have to go; disease can kill them, and if a tree falls, that impacts the homeowner immediately and even literally.
At other times, however, arborists can disagree about whether a tree has to go. We have a honey locust tree in our backyard that lost a limb after another tree fell on it (and the house's previous owner's car) during a storm. About half the aborists we talk to say the tree should come out, since it might fall over one day. The other half say that these trees are nearly indestructible, and unless it starts dying, we have nothing to worry about. We like the shade. What to do? For now, we're keeping it. We hope we're right.
That tree is on private property. But if it were a street tree, DDOT's Urban Forestry Administration could simply decide to take it out. DDOT has policies that they should notify homeowners, and the Council has considered laws to require notification. But those aren't always followed.