Public Hearing — Boston

What to do next

1. 1

   Note the treatment period

   Mark April 29–November 30, 2026 as the active herbicide application window for affected MBTA lines.

2. 2

   Avoid treated areas during spraying

   Stay clear of track ballast, shoulders, yards, and substations when work crews are operating to reduce exposure.

3. 3

   Contact MBTA for concerns

   Reach out to the MBTA (via their public contact channels) to request more information or raise health/environmental concerns prior to or during the treatment period.

Frequently asked questions

When will the MBTA herbicide spraying start and end?

Spraying is scheduled to start on or about April 29, 2026, with foliar and cut surface treatments concluding by November 30, 2026.

Which MBTA locations will be treated with herbicides?

Target areas include track ballast and shoulders, yards, and power substations on lines such as Beacon Street, Blue, Red, Orange, Green, and others listed.

What application methods will the MBTA use for herbicides?

They will use truck-mounted low-pressure boom sprayers with hoses and low-volume backpack sprayers.

Where can I find safety and regulatory details about these applications?

Applications will follow the MBTA's Yearly Operation Plan and Massachusetts regulation 333 CMR 11.00.