The 12 settling parties will pay an estimated $2.5 million for the investigation and an estimated $1 million to remove contaminated soil at the superfund site. They will also reimburse the EPA for its oversight costs.

The entities include:ExxonMobil, BP, DuPont and Veolia are among the 12 private parties that will pay more than $3.5 million as part of a settlement with the EPA related to the Metro Container Superfund Site in Trainer, Pennsylvania.

Under the agreement, contamination from a portion of the site will be removed. In addition, a scientific investigation of the site’s contamination will be conducted and site cleanup options will be developed and shared with the community.

Using information from this investigation, the EPA says it will select an effective action to protect the surrounding community and nearby waterways and wetlands from site-related contamination. Stoney Creek is about 1,000 feet from the site and flows directly into the Delaware River.

The Metro Container site was added to the EPA’s National Priorities list, a list of the most contaminated sites in the nation, in 2012. EPA investigations have documented numerous hazardous waste contaminants of concern at the site — including polychlorinated biphenyls (PCBs), pesticides and numerous volatile organic compounds — in the soil and ground water plumes migrating from the site and into Stoney Creek and the Delaware River.

Earlier this month the EPA reached a $55 million settlement with Shell Oil Company and the US General Services Administration for the cleanup of contaminated soil at the Del Amo Superfund Site in Los Angeles, California.