Superfund Information Systems: Site Profile

Superfund Site:

ARMSTRONG WORLD INDUSTRIES
MACON, GA

Cleanup Activities

On this page:

On related pages:


Background

The 130-acre Armstrong World Industries (Armstrong) site is located in Macon, Georgia. Since 1948, Armstrong has operated an acoustic ceiling tile manufacturing plant at the site. The Macon facility may also have recycled materials, including newspaper with older dye formulations, containing polychlorinated biphenyls (PCBs). The site is bordered on the east by Broadway Street; to the north by Guy Paine Road and the Lynmore Estates residential area; to the east by Allied Industrial Park (the former Macon Naval Ordnance Plant Superfund Site); and to the south by Rocky Creek.

  • EPA placed the site on Superfund's National Priorities List (NPL) in 2011 because waste disposal operations have impacted groundwater, in addition to fish and sediment in Rocky Creek. 
  • This site contains two land parcels,  the northern parcel consists of the manufacturing facility, the wastewater treatment plant (WWTP), the 7.7-acre WWTP Landfill, and the 3.8-acre Woodyard Landfill. The Woodyard Landfill was capped in 2004 by Armstrong under State oversight. 
  • The southern parcel includes a third landfill referred to as the Remote Landfill, which is located next to Rocky Creek. Armstrong began disposing of waste materials in the Remote Landfill in the 1960s. The former Macon Naval Ordnance Plant, which operated on property next to the Armstrong facility, also disposed of waste materials in the Former Macon Naval Ordnance Landfill (FMNOL). The AWI Remote Landfill and FMNOL are essentially one landfill that will be addressed as Operable Unit Two of the Armstrong World Industries NPL site. 

     

Top of Page


What Has Been Done to Clean Up the Site?

With support from the Georgia Environmental Protection Division (GAEPD), EPA listed the site on its National Priorities List (NPL) in 2011. EPA has divided the cleanup at the site into two areas or operable units (OUs). OU-1 addressed the Wastewater Treatment Plant Landfill, with Armstrong as the sole responsible party. OU-2 will address the Remote Landfill and Rocky Creek, with Armstrong as one of several potentially responsible parties.

  • In 2011, as part of the OU-1 work, a composite soil sample was collected along the site’s northern fence line, in order to determine if residential areas to the north were potentially impacted. Polychlorinated biphenyls (PCBs) were not found in this soil sample. Surface water runoff is to the south towards Rocky Creek, away from the residential areas to the north.
  • In 2013, using Superfund's removal authority, EPA issued the cleanup plan (Action Memorandum) for OU-1. The OU-1 removal action called for an engineered cap/liner system on the landfill, a mechanically stabilized earthen barrier wall, and replacement of the drainage swale. This response action was designed to manage surface and subsurface soils while also preventing subsurface water infiltration. The final design of the engineered cap also included a pollinator meadow to provide habitat for butterflies, bees, and other species. Construction work on the WWTP Landfill began in 2015 and was completed in April 2016.

Top of Page


What Is the Current Site Status?

  • Construction work on the WWTP Landfill began in 2015 and was completed in April 2016 (OU-1)
  • Operable Unit Two (OU-2) will address the Remote Landfill and Rocky Creek.
    • As part of Superfund’s remedial process a Remedial Investigation/Feasibility Study (RI/FS) is required. The RI identifies the contamination and risks remaining at the site while the FS identifies the cleanup options for addressing those risks. On September 18, 2018, EPA finalized an agreement with the potentially responsible parties for performance of the OU-2 RI/FS. The RI/FS Workplan is expected to be completed in March 2019, at which time a public availability session is planned to kick off the RI field sampling activities. 

Top of Page


Enforcement Information

  • The WWTP Landfill was addressed as Operable Unit One (OU-1), with Armstrong as the sole responsible party.
  • Operable Unit Two (OU-2) at the site will address the Remote Landfill and Rocky Creek. EPA has identified seven potentially responsible parties (PRPs) for OU-2 at this site. In September 2015, EPA sent Special Notice Letters to the seven PRPs notifying them of their potential liability for OU-2 costs. The letters also solicited the PRPs to reach an agreement with EPA to begin Superfund’s remedial process for OU-2. On September 18, 2018, EPA finalized an agreement with the potentially responsible parties for performance of the OU-2 RI/FS. The RI/FS Workplan is expected to be completed in March 2019, at which time a public availability session is planned to kick off the RI field sampling activities. 

Top of Page