
                            RESPONSIVENESS SUMMARY
                                       
Notice of Intent to Partially Delete Macalloy Corporation Site from National Priority List 
              North Charleston, Charleston County, South Carolina
                                       
                            EPA-HQ-SFUND-2000-0006
                             FRL-10011-89-Region 4
                                       
                                August 31, 2020
                                       
                                       
On July 27, 2020, the Region 4 Office of the United States Environmental Protection Agency (EPA) published in the Federal Register a Notice of Intent to Partially Delete (NOIPD) the Macalloy Corporation Site from the National Priorities List (NPL).  This publication initiated a 30-day public comment on the proposed action to delete 134-acres of the 140-acre site located at 1800 Pittsburgh Avenue, North Charleston, South Carolina 29405.  The State of South Carolina, through the South Carolina Department of Health and Environmental Control (SCDHEC) concurs with this proposed action.  The remaining 6-acres with groundwater concentrations above the 100 ug/L Maximum Contaminant Level (MCL) for total chromium will remain on the NPL. Periodic groundwater monitoring will be conducted in the future on the 6-acre parcel to measure progress towards meeting the total chromium MCL.

The 30-day public comment period closed on August 26, 2020.  One comment was received from the public during this time frame.  The comment is provided below followed by EPA's response.

Anonymous Comment Posted August 4, 2020:  Pursuant to CERCLA section 121(c) and the NCP, EPA conducts five-year reviews to ensure the continued protectiveness of remedial actions where hazardous substances, pollutants, or contaminants remain at a site above levels that allow unlimited use and unrestricted exposure.  In case during one of these reviews the EPA finds pollutants in this site, there should be joint and several liability on any party found responsible for creating this pollution retroactively to when the parties began to be involved in the site.  Furthermore, include in the five year inspection period groundwater monitoring as well.

EPA Response:   In July 1998, Potentially Responsible Party (PRP) Macalloy, the EPA, and SCDHEC decided that CERCLA would be an appropriate mechanism to address contamination at the site. Subsequently, the site was proposed for inclusion on the National Priorities List (NPL) on October 22, 1999; and on March 29, 2000, Macalloy entered into an agreement with the EPA to perform a CERCLA Remedial Investigation/Feasibility Study (RI/FS) at the Site with EPA oversight.  After the Record of Decision (ROD) was issued in August 2002, the Macalloy PRP Group entered into a Consent Decree in June 2004 to implement the alternatives selected in the EPA ROD.
The first Five-Year Review (FYR) for the Macalloy Site was finalized in September 2010, and the second FYR was finalized in August 2015.  The third FYR was approved on August 20, 2020.  All three FYR's have been included in the Federal Deletion Docket.  All recommendations in the FYRs have been addressed and there are no levels of pollutants at the Site that would prohibit future commercial/industrial land-use.  All three FYRs have included the most recent and up to date groundwater monitoring results. 

No further Superfund response is needed to protect human health and the environment under a future commercial/industrial land-use scenario.  EPA believes the activities completed at the site satisfy the deletion criteria in the National Oil and Hazardous Substances and Pollution Contingency Plan, and it is appropriate to delete 134-acres of the 140-acre site from the NPL. 





