Superfund Information Systems: Site Profile

Superfund Site:

SULLIVAN'S LEDGE
NEW BEDFORD, MA

Operable Units

Below, EPA has provided a list of the remedial actions selected pertaining to each operable unit.

EPA issues Records of Decision (RODs) to explain which cleanup methods will be used at Superfund National Priorities List sites. EPA has two primary documents that it may use to identify changes to the remedies selected in RODs. EPA uses a ROD Amendment when it needs to make a fundamental change to the remedy. EPA publishes an Explanation of Significant Differences (ESD) for significant changes.

During cleanup, complex sites may be divided into several distinct areas to make the response more efficient. These areas, called operable units (OUs), may address geographic areas, specific problems, or medium (e.g., groundwater, soil) where a specific action is required.

EPA is working to improve data quality. The information presented on this page is undergoing review for accuracy and completeness, and may be subject to change.

OU ID Name Decision Document Cleanup Technologies Selected
in the Decision Document
00 SITEWIDE No decision document
01 OU1 REST OF SITE Record of Decision
June 29, 1989
Filtration (P&T, exsitu)
Solidification/Stabilization (exsitu, onsite)
Ultraviolet (UV) Oxidation (P&T, exsitu)
01 OU1 REST OF SITE Explanation of Significant Differences
July 26, 1995
ESD - Nonfundamental Change (other)
01 OU1 REST OF SITE Explanation of Significant Differences
September 27, 2000
Solidification/Stabilization (exsitu, onsite)
Vertical Engineered Barrier (slurry wall)
01 OU1 REST OF SITE Explanation of Significant Differences
September 29, 2003
Off-gas Treatment (other, NOS)
02 OU2 MIDDLE MARSH Record of Decision
September 27, 1991
Cap (engineered cap)
Chemical Treatment (solvent extraction, exsitu)
Consolidate (onsite)
Containment (other, NOS, onsite)
Dewatering
Excavation
Incineration (offsite)
Institutional Controls
Monitoring
02 OU2 MIDDLE MARSH Explanation of Significant Differences
July 26, 1995
Data not available

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