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Grenada Manufacturing, LLC, Facility Cleanup and Environmental Studies in Grenada, MS

EPA became aware of the potential for trichloroethene (TCE) contamination while overseeing a cleanup of the Grenada Manufacturing, LLC, facility under the Resource Conservation and Recovery Act (RCRA). This facility is commonly known as Grenada Stamping or Rockwell International Wheel & Trim, and currently operated by Ice Industries. In response, EPA conducted an environmental study in and around Eastern Heights to evaluate whether contamination may be traveling into the community.  EPA also directed that an air study be conducted at the facility to assess elevated levels of TCE. As of December 21, 2017, in consultation with the Mississippi Department of Environmental Quality, EPA transitioned oversight responsibility for the cleanup of this facility from its authority under RCRA to the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA).

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Timeline for Grenada Manufacturing Cleanup in Eastern Heights Neighborhood, Grenada, MS

  • January 5, 2017 – EPA directs Ice Industries to implement immediate actions at the Facility to reduce worker exposure.
  • January 3, 2017 – EPA receives validated results from the October 2016 indoor and outdoor air sampling conducted at the Facility.
  • November/December 2016 – EPA conducts a second round of sampling inside the 17 homes that were tested in May 2016 to confirm the results.
  • October 2016 – EPA oversees the Facility’s environmental sampling of indoor and outdoor air at the Facility.
  • September 2016 – EPA conducts outdoor air sampling in Eastern Heights, along with indoor sampling of one home in the neighborhood.
  • May 2016 – EPA receives requested treatment alternatives from the Facility to reduce the TCE in a spill area at the Facility.
  • May 2016 – EPA conducts indoor air sampling of 17 new homes in the south and southeast of portion of the neighborhood nearest the area where groundwater contamination has been identified. EPA also tests soil, sediment and groundwater in the neighborhood. Outside the neighborhood, EPA also conducts outdoor air sampling to determine whether any ambient sources of TCE exist.
  • April 2016 – EPA requests that the Facility conduct additional groundwater sampling on-site in order to support future cleanup decisions.
  • April 2016 – EPA conducts sampling at and surrounding the Facility, including soil, sediment, surface water and groundwater.
  • April 2016 – EPA approves the Facility’s Permeable Reactive Barrier (PRB) Pilot Study Work Plan.
  • March 2016 – EPA receives the Facility’s PRB Pilot Study Work Plan.
  • March 2016 – EPA oversees a second round of indoor air (six homes on the southern edge of the neighborhood) and outdoor air sampling in Eastern Heights.
  • January 2016 – EPA conducts outdoor air sampling in Eastern Heights and surface water sampling in Riverdale Creek.
  • Fall 2015 – EPA oversees sampling performed by the Facility’s contractor of indoor air in six homes on the southern edge of the neighborhood, outdoor air and groundwater in Eastern Heights.
  • August 2015 – EPA approves the Facility’s final work plan for a vapor intrusion study in six homes on the southern edge of the neighborhood.
  • June 2015 – EPA directs the Facility to conduct a vapor intrusion study in the Eastern Heights neighborhood.

Environmental Study in Eastern Heights, Grenada, MS

The environmental study in the Eastern Heights neighborhood was prompted by ongoing work to clean up the Grenada Manufacturing, LLC facility (Facility, commonly known as Grenada Stamping and currently operated by Ice Industries) under the Resource Conservation and Recovery Act (RCRA) program.  Based on results received to date for Eastern Heights, EPA has determined that there is no immediate threat to public health in the neighborhood due to trichloroethene (TCE).

EPA is overseeing a related environmental study at the Facility property. Based on results received to date for the Facility, EPA has directed Ice Industries to notify workers of the elevated TCE concentrations and implement immediate actions at the Facility to reduce worker exposure.

Background

Between 2011 and 2015, groundwater and soil vapor collected on the edge of the neighborhood as part of the cleanup indicated a potential concern for contaminants, primarily TCE, migrating off-site. TCE is a non-flammable, colorless liquid used as a solvent for cleaning metal parts.

In a June 2015 letter, EPA directed the Facility to conduct environmental sampling in and around the Eastern Heights neighborhood. EPA approved the Facility’s work plan in September 2015, and oversaw their investigation in September 2015 that included indoor air and outdoor air sampling, as well as groundwater and limited soil sampling in the Eastern Heights neighborhood.

In a letter dated December 30, 2015, EPA requested that the Facility expand the environmental study in Eastern Heights and undertake additional on-site corrective action work.

While EPA continued negotiations with the Facility to complete additional work, EPA began its own sampling for contaminants in indoor and outdoor air, groundwater, surface water and soil in the Eastern Heights neighborhood, at the Facility property and surrounding areas.

The Facility responded on January 29, 2016 and EPA oversaw the Facility’s second investigation in March 2016, which included indoor air and outdoor air sampling in the Eastern Heights neighborhood.

Results of sampling conducted in the Eastern Heights neighborhood are posted as they become available.

Results of sampling conducted at the Facility are posted as they become available.

EPA will use the results of the environmental study in the Eastern Heights neighborhood to inform the ongoing RCRA cleanup of the contamination from the Facility. By law, the Facility is obligated to conduct and finance the investigation and cleanup of contamination from current or former operations.

The EPA is coordinating closely with the Mississippi Department of Environmental Quality, Mississippi State Department of Health and the Agency for Toxic Substances and Disease Registry.

Environmental Study at the Grenada Manufacturing Facility

EPA continues to assess potential impacts to human health and the environment resulting from contamination at and surrounding the Grenada Manufacturing, LLC facility (Facility, commonly known as Grenada Stamping and currently operated by Ice Industries).

Air samples were collected by the Facility’s contractor in October 2016 and in January, March and from May – October in 2017. Results show elevated levels of trichloroethene (TCE) in the Facility’s indoor air and in the air beneath the concrete floor.

With the concurrence of the Mississippi Department of Environmental Quality (MDEQ), EPA directed Ice Industries to notify workers of the elevated TCE concentrations and implement immediate actions at the Facility to reduce worker exposure.

On December 29, 2017, a treatment system intended to reduce elevated levels of trichloroethene (TCE) inside the manufacturing building at the Facility was restarted under an EPA removal action. Removal actions are short-term responses under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) intended to protect people from risks or potential risks associated with contaminated sites. The treatment system will operate with EPA oversight and monitoring.

TCE contamination is present beneath the Facility as a result of spills from prior operations. Sampling indicates TCE vapors from beneath the concrete floor are rising into the building and there could be a risk to workers. The new treatment system will replace interim measures taken since January 2017 to increase ventilation. These have decreased TCE concentrations within the building. The new treatment system is a more reliable, long-term method to ensure TCE concentrations remain at acceptable levels.

EPA previously directed the Facility to install the treatment system, known as a sub-slab depressurization system. The Facility’s contractor installed and operated the SSDS from August 12 to September 11, 2017, as a pilot study. Air sampling results before and after the pilot showed the treatment system was effective at reducing TCE concentrations inside the building.

Background

In a letter dated December 30, 2015, EPA requested that the Facility, expand the environmental study in Eastern Heights and undertake additional on-site corrective action work. The Facility responded on January 29, 2016, and expressed willingness to continue to conduct on-site work while declining to conduct further work in the neighborhood.   EPA directed the Facility to:

  • Make improvements to the Permeable Reactive Barrier (PRB) which is used to treat the groundwater. The EPA received the PRB Pilot Study Work Plan in March and approved it in April 2016. Work began in May 2016 and is ongoing.
  • Provide treatment alternatives for reducing the concentration of trichloroethene (TCE) in a spill area at the Facility known as Area of Concern A (near a former TCE above-ground storage tank). Two treatment alternatives were submitted in May 2016. EPA will approve the final treatment option based on results from the PRB Pilot Study.

In a March 30, 2016 email, EPA directed the Facility to perform indoor air sampling in both administrative and manufacturing areas of the building.  EPA approved the final workplan on October 21, 2016, and the Facility’s contractor conducted the sampling during the week of October 21, 2016.  EPA oversaw a second round of air sampling inside the Facility during the week of January 16, 2017.

On April 7, 2016, EPA requested that the Facility conduct additional groundwater sampling at the Facility in order to support future cleanup decisions.

While EPA continued negotiations with the Facility to complete additional work, EPA began conducting its own environmental sampling in the neighborhood.  In April and May 2016, EPA conducted an updated site investigation at the Facility together with sampling at 17 additional homes in the neighborhood.

EPA collected samples on the Facility property, including the plant, the former disposal area and outfall ditch. Samples were also collected in nearby areas, including the area between the Facility and the neighborhood. Air, sediment, surface water and soil were tested in order to supplement existing information. The results will be detailed in the Expanded Site Inspection (ESI) Report and will be used in the ongoing cleanup of the Facility and surrounding areas. Upon completion, the ESI Report will be made available online.

Results of sampling conducted at the Facility are posted as they become available.

Results of sampling conducted in the Eastern Heights neighborhood are posted as they become available.

EPA Community Engagement Activities in Grenada, Mississippi

In keeping with its mission to protect human health and the environment, EPA continues to conduct community engagement efforts communicating the progress and results of the environmental study in Grenada, MS.

EPA canvassed Eastern Heights in August 2015 and met with many residents in person to inform them of plans to conduct an environmental study in the neighborhood. Since then, EPA has held two public meetings and sent several fact sheets to residents to provide updates. Presentations from these meetings and all fact sheets are posted on EPA’s dedicated website for the Grenada Manufacturing, LLC, investigation and cleanup effort.

EPA has worked with residents and their attorneys to acquire access authorizations and schedule sampling events at six homes in September 2015 and March 2016, and another 17 homes in May 2016. EPA is working to obtain access for a second round of in-home sampling planned for November 2016 in the same 17 homes tested in May.

After each round of sampling, EPA sends letters and makes phone calls to residents whose homes were sampled to review the results. Fact sheets summarizing the results, as they become available, are sent to all neighborhood residents and posted online.

While in the field, EPA worked with residents to get responses to a dwelling survey and assisted the residents with temporary removal and return of their household hazardous products during the sampling activities. During the May 2016 sampling activities, EPA invited residents aboard EPA’s mobile air monitoring laboratory (TAGA bus) to view the results of the room-to-room screening.

EPA continues to coordinate with the Mississippi Department of Environmental Quality, Mississippi Department of Public Health and the Agency for Toxic Substances and Disease Registry. EPA has provided regular updates regarding the cleanup activities to local Grenada officials and to representatives from Congressman Bennie Thompson’s office.

EPA is committed to keeping the community informed every step of the way. If you have questions or would like more information, please contact Brian Holtzclaw.

Relocation

EPA has received several inquiries about possible relocation. Based on all the results received to date, EPA has determined that there is no immediate threat to public health and EPA is not considering temporary or permanent relocation of any Eastern Heights neighborhood residents.

Relocation decisions are guided by the Agency’s National Superfund Permanent Relocation Interim Policy dated July 8, 1999. As stated in the policy, “EPA’s preference is to address the risks posed by the contamination by using well-designed methods of cleanup which allow people to remain safely in their homes and businesses.”

Permanent relocation is only considered in cases where, for example, contamination poses an immediate threat that cannot be mitigated or remediated, implementation of remedial measures would require the destruction of homes, or the cleanup requires residents to be temporarily relocated for over one year. None of these conditions exist in Eastern Heights.

EPA Cleanup of the Grenada Manufacturing, LLC, Facility

The environmental study in the Eastern Heights neighborhood prompted by ongoing work by EPA and the Mississippi Department of Environmental Quality (MDEQ) to oversee the cleanup of the Grenada Manufacturing, LLC Facility (Facility, now Grenada Stamping).  Remedial activities at the Facility began in 1990 when waste (from a former landfill located on the Faclity) was excavated for disposal off-site under the direction of MDEQ. Since 1995, EPA has overseen the cleanup of the Facility under the Resource Conservation and Recovery Act (RCRA) corrective action program.

The original 1998 RCRA permit with the Facility was the roadmap for the facility to address historic legacy contamination and waste. The permit was renewed in 2010.

Under the RCRA permits, the Facility has conducted numerous investigations and response actions over the years, including closure of the former sludge lagoon. Approximately 239 gallons of trichloroethene (TCE) and 2,200 gallons of toluene were removed from ground water. Institutional controls were put in place to prevent potential exposures. Lastly, a permeable reactive barrier (PRB) was installed for ground water migration control and treatment. The effectiveness of the PRB is being evaluated by EPA.

Ongoing work that has been coordinated by the Mississippi Department of Environmental Quality (MDEQ) EXIT includes (but is not limited to): the Moose Lodge Road Disposal Site; Rockwell Grenada Lake Disposal Site; Grenada Manufacturing, LLC, Equalization Lagoon Closure; and the Riverdale Creek Assessment.

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