# IRON HORSE PARK - OPERABLE UNIT 4
> **Administrative - Formal** · FY2012 · — · Final Order No Penalty
## Case
- **Activity ID:** `3000024954`
- **Case Number:** 01-2012-0512
- **Type:** Administrative - Formal
- **Lead:** EPA
- **Outcome:** Final Order No Penalty
- **Penalty assessed:** —
- **Cost recovery:** —
- **Compliance action $:** —
- **Multimedia (multi-env):** —
## Defendants
- BOSTON & MAINE RAILROAD (complaint) (settlement)
- MBTA (complaint) (settlement)
## Summary

EPA has signed an Administrative Settlement Agreement and Order on Consent (Settlement Agreement) with the Boston & Maine Corporation (B&M) and the Massachusetts Bay Transportation Authority (MBTA) in connection with Operable Unit 4 of the Iron Horse Park Superfund Site in Billerica, Massachusetts (Site).  The Settlement Agreement provides that B&M and MBTA will perform sediment sampling in the Boston & Maine Pond located on the Site. The Site is a 553-acre industrial complex which includes manufacturing and rail yard maintenance facilities, open storage areas, landfills, and former wastewater lagoons.

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*Source: [EPA ECHO](https://echo.epa.gov/) · AI Analytics · CC0 1.0*