From the Baltimore City Recycling Website
Why Are Plastic Bags No Longer Acceptable for Recyclables?
Plastic bags of any color, size, or shape will no longer be accepted. The City’s Recycling Processing Facility uses an automated system to sort and bale the recyclables. Plastic bags jam the automated machinery. All juristictions that have gone to a single stream recycling system which allows all mixed recyclables to be recycled together, no longer accept plastic bags. Residents can take their plastic bags to some grocery stores. You are encouraged to ask for paper bags during shopping or opt for the cloth/mesh reusable bags. The first step in recycling is to reduce, so changing the type of bag used during shopping is a huge help to the environment.