# SOUTH WEYMOUTH NAVAL AIR STATION
> **Administrative - Formal** · FY1999 · — · Final Order No Penalty
## Case
- **Activity ID:** `600005442`
- **Case Number:** 01-1999-0503
- **Type:** Administrative - Formal
- **Lead:** EPA
- **Outcome:** Final Order No Penalty
- **Penalty assessed:** —
- **Cost recovery:** —
- **Compliance action $:** —
- **Multimedia (multi-env):** —
## Defendants
- SOUTH WEYMOUTH NAVAL AIR STATION (complaint) (settlement)
## Summary

FEDERAL FACILITY AGREEMENT: SOUTH WEYMOUTH NAVAL AIR STATION #MA217002202

FY21 - ESDs for OU23 and OU24:  The selected remedy for OU23 and OU24, the Industrial Operations Area (IOA), was documented in a ROD signed by the Navy and the U.S. EPA in September 2015, with concurrence from MassDEP. The selected remedy for the IOA was excavation and disposal of 1,862 cubic yards of soil to meet Residential Remedial Goals (RGs).  The contaminants of concern were polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), pesticides, dioxins, and metals in surface soils.

Soil excavation activities at the IOA were performed in two mobilizations, with the first between September 2016 and September 2018 and the second from January 2020 through June 2021. 

This ESD presents six revisions to the selected remedy outlined in the September 2015 IOA ROD which include:
�	development of new remedial goals (RGs) for several contaminants of concern (COCs), including seven PAHs, total PCBs, and chromium;
�	expanded OU24 to include impacted soil at Building 2;
�	revised (increased) the total volume of soil to be removed;
�	added a determination under the Toxic Substances Control Act (TSCA) that the remedial measures selected to address risks posed by PCB-contaminated soil, as modified by the ESD, will meet the no unreasonable risk of injury standard in accordance with TSCA regulatory standards at � 761.61(c);
�	addition of U.S. EPA guidance ��EPA Guidance 

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