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T. H. Agriculture & Nutrition
National Information
Photos/Multimedia
TH Agriculture building on site.
- Additional Site Photos
- Site Video
Additional Resources
- Site Cleanup Terms - can be found in EPA's glossary
- EPA Guides to Cleanup Technologies
- Superfund Community Involvement (PDF) (17 pp, 130K, About PDF)
Site Summary Profile
EPA ID: ALD007454085Location: Montgomery, Montgomery County, AL
Lat/Long: 32.376100, -086.379100
Congressional District: 07
NPL Status: Proposed: 06/24/88; Final 08/30/90
Affected Media: Ground water, Sediment, Soil, Surface Water
Cleanup Status: Construction complete - physical cleanup activities have been completed.
Site Reuse/Redevelopment: None
Site Manager: Brian Farrier (farrier.brian@epa.gov)
Site Background
The T. H. Agriculture & Nutrition site is located on the west side of the City of Montgomery, Alabama, approximately two miles south of the Alabama River and just west of the Maxwell Air Force Base. The site consists of two adjacent parcels of land – the T.H. Agriculture property and the Atofina Chemicals, Inc. property - encompassing approximately 16.4 acres.
Previous site operations involved the formulation, packaging and distribution of pesticides, herbicides, and other industrial/water treatment chemicals. Dichlorodiphenyl-trichlorethane has been detected at levels of over 1000 parts per million (ppm) and toxaphene has been detected at levels of over 4000 ppm at the site. Numerous other pesticides and herbicides have been found in both ground water and soil at the site.
The site is currently unoccupied and there are no plans to develop or reoccupy either property. Principal adjacent land uses are commercial and industrial, although some of the neighboring properties are undeveloped and there is a mobile home park located northwest of the site.Threats and contaminants
Ground water beneath the site is contaminated with pesticides, including hexachlorides and herbicides, and volatile organic compounds (VOCs) including trichloroethene (TCE) and tetrachloroethene (PCE). Soil and sediment at the site are pesticides, including dichlorodiphenyltrichloroethane (DDT), dichlorodiphenyldichloroethylene (DOE), dichlorodiphenyldichloroethane (DOD), and toxaphene, and metals such as arsenic.
Site Cleanup Plan
The cleanup plan for the T.H. Agriculture site covers two operable units (OUs): OU-1 (interim ground water cleanup) and OU-2 (final ground water cleanup and soil/sediment cleanup).
The Record of Decision for OU-1 was issued in 1995. The cleanup approach included:
- Extraction of ground water to contain contamination within the boundaries of the site.
- Discharge of water to the local water treatment plant for treatment.
The Record of Decision for OU-2 was issued in 1998. Major components of the cleanup approach included:
- Excavation of soil and sediment from those areas exceeding cleanup standards.
- Backfilling of the excavated areas.
- On-site biological treatment of the excavated soils and sediments.
- Revegetation of the treated soils and sediments.
- Institutional controls, including fencing and deed restrictions limiting site use for industrial purposes.
- Evaluation of the interim ground water cleanup and supplementing the ongoing biodegradation using enhanced bioremediation techniques.
Cleanup Progress
The ground water extraction system was installed in 1997 and operated until 2002.
The OU-1 interim ground water remedy, which consisted of extraction and discharge to the local POTW, has been superseded by the ground water component of the OU-2 final remedy - enhanced bioremediation. Operation of the ground water extraction system was stopped in 2002 so the enhanced bioremediation approach could be implemented.
The enhanced bioremediation of ground water using a Hydrogen Release Compound (HRC) was undertaken in March 2002. HRC is a proprietary bioremediation technology injected into ground water that is used to treat chlorinated compounds, such as TCE, DDT, and PCE.
Additional bioremediation of ground water was undertaken through injection of EHC® in June 2005. EHC is a proprietary bioremediation technology used to treat chlorinated compounds, such as TCE and PCE.
Beginning in 2002, contaminated soil and sediment were consolidated on-site for treatment. On-site treatment of contaminated soils was completed in 2004. Approximately 2,850 cubic yards of soil and sediment were treated on on-site.
Two Five-Year Reviews (FYRs) have been completed for the T.H. Agriculture site. The first FYR was completed in 2002. The second FYR for the site was finalized in September 2007.
Many site cleanup activities have been undertaken by potentially responsible parties with oversight by EPA.
Enforcement Activities
In 1991, EPA entered into a consent agreement with Elf Atochem North America Inc. to conduct a Remedial Investigation/Feasibility Study for the site.
A Consent Decree, which laid out activities to be taken in cleanup up OU-2, was signed in January, 2000.Community Involvement
EPA has conducted a range of community involvement activities at the T.H. Agriculture site to solicit community input and to ensure that the public remains informed about site activities throughout the site cleanup process. Outreach activities have included public notices and information meetings on site cleanup progress and activities.
Future Work
Ground water monitoring at the site will continue to assess the progress of enhanced bioremediation treatments.
The next FYR for the site is scheduled for 2012.Site Administrative Documents
Site Repository
For more information or to view any site related documents, please visit the site information repository at the following location. As new documents are generated, they will be placed in the information repository for public information.
Rufus Lewis Regional Library3095 Mobile Highway
Mongomery, AL 36108
Administrative Record Index
- OU-1 (PDF) (15 pp, 850K, About PDF)
- OU-2 (PDF) (10 pp, 460K, About PDF)
For documents not available on the website, please contact the Region 4 Freedom of Information Office.