Unfortunately, environmental review is often a vehicle for ensuring that people get as many chances to complain and obstruct as possible, even if the environmental impacts are minimal. An example of absurd objections in this vein can be found in the Virginia Avenue Tunnel replacement project, where residents objected because:
a) It would lower their home values (note that the railroad tunnel predates the houses by a few decades, and the railroad has talked about doing this project for 2 decades)
b) Extra train traffic means more pollution. Seems reasonable, until you realize that the tunnel is almost literally in the shadow (it's on the south side, not north, so not quite literally) of an interstate. Guess who's responsible for most of the air pollution.
c) The project calls for railroad to temporarily run in a exposed trench while building the tunnel. Residents are worried about what would happen if an oil tanker car caught fire. Unfortunately, a glance at the map indicates that this is not on the routes between oil supply centers and oil demand centers, and, as Baltimore found out (see https://en.wikipedia.org/wiki/Howard_Street_Tunnel_fire ), fires in tunnels are much worse than fires in the open air.