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Marzone Inc./Chevron Chemical Co.


View of funnel-and-gate system reactors on OU-1 of the Marzone-Chevron site.

Additional Resources
Site Summary Profile
EPA ID: GAD991275686
Location: Tifton, Tift County, GA
Lat/Long: 31.428900, -083.501700
Congressional District: 02
NPL Status: Proposed: 06/24/88; Final: 10/04/89
Affected Media: Ground water, Soil, Surface water, Sediment
Cleanup Status: Construction Complete – ground water remedy evaluation underway
Human Exposure Under Control: Yes
Groundwater Migration Under Control: insufficient data to determine migration control status
Sitewide Ready for Anticipated Use: No
Site Reuse/Redevelopment: In continued use – warehouses are used for equipment storage, peanut storage/processing and metal recycling
Site Manager: Robenson Joseph (joseph.robenson@epa.gov)

Current Site Status

The Marzone Inc./Chevron Chemical Co. site includes the area where companies operated pesticide and fertilizer production facilities from 1950 to 1992. Several light industrial businesses now use most of the site. EPA placed the site on the National Priorities List (NPL) in 1989 because of contaminated soil, ground water and sediment resulting from facility operations. EPA, the Georgia Environmental Protection Division (Georgia EPD) and the site’s potentially responsible parties (PRPs) have investigated site conditions and taken steps to clean up the site in order to protect people and the environment from contamination. Treatment of ground water contamination is ongoing. However, site contamination does not threaten people living and working near the site. People do not use contaminated ground water for drinking water purposes. By treating and monitoring ground water, and undertaking Five-Year Reviews, EPA, Georgia EPD and the site’s PRPs continue to protect people and the environment from site contamination. EPA and the PRPs are currently considering the possibility of using a more intensive ground water treatment approach for the site.

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Site Location and Background

The 8.9-acre site is located in a rural area just outside the City of Tifton in south-central Georgia, at the intersection of Golden Road and the Norfolk Southern Railroad. Light industrial and agricultural areas surround the site. A few residences are also located nearby.

Chevron Chemical Company owned and operated a pesticide and herbicide formulating plant on a portion of the site EPA refers to as Operable Unit-1 (OU-1) from 1950 to 1970. Several other companies, such as Tifton Chemical Company, Tiftchem Products, Inc. and Marzone Chemical Company, owned and operated the plant from 1970 until full-scale chemical formulation operations ended in 1983. Businesses now use the north and south warehouses located on the OU-1 portion of the site for light industrial purposes, including equipment storage and metal recycling.

Companies used the other portion of the site, referred to by EPA as OU-2, as a formulation and packaging plant for pesticides and fertilizers. Handling of agricultural chemicals on this portion of the site may have begun as early as 1967. A series of owners, including Golden Seed Inc., formulated pesticides and conducted fertilizer operations until 1992. Banner Grain & Peanut Company now uses OU-2 for peanut storage and processing.

Georgia EPD first became involved at the site during the 1970s, followed by EPA in 1984. In 1989, EPA listed the site on the NPL.

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Threats and Contaminants

Site investigations identified contamination that could potentially harm people in the area.

Contaminants of concern (COCs) in OU-1 surface soil, below-surface soil and ground water include atrazine, alpha hexachlorocyclohexane (HCH) (formally known as benzene hexachloride, or BHC), beta HCH, dichlorodiphenyldichloroethane (DDD), dichlorodiphenyldichloroethylene (DDE), dichlorodiphenyltrichloroethane (DDT)dieldrin, endosulfan II, ethylbenzene, heptachlor epoxide, lindane, methyl parathion, toxaphene and xylene.

COCs in OU-2 surface soil and sediment include DDT, DDE, DDD, toxaphene, alpha chlordane, gamma chlordane, copper, lead and zinc.

COCs in OU-2 ground water include aluminum, beryllium, cadmium, manganese, nickel, lead, manganese, iron, nitrate/nitrite, alpha HCH, gamma HCH, endrin and dinoseb.

Parties dug up and removed sediment and surface soil that could threaten nearby residents or workers. Fencing surrounds its northern, western and eastern sides. Parties have not placed fencing along the southern side of the site, which is the location of a contaminated wetland area owned by Tift County. Contaminated soils and sediment could threaten trespassers accessing this area.

People do not use contaminated ground water for drinking water purposes. Institutional controls restrict ground water use for a portion of OU-1.

EPA determined that vapor intrusion for OU-1 is not a threat.

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Investigation and Cleanup Responsibility / Oversight

PRPs lead site investigation and cleanup activities for OU-1, with oversight provided by EPA and FDEP.

EPA leads investigation and cleanup activities for OU-2, in cooperation with Georgia EPD.

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Site Cleanup Plan

In 1994, EPA issued a cleanup plan (a Record of Decision, or ROD) for OU-1. The plan included the following activities:

In 1997, EPA issued a ROD Amendment that changed the approved cleanup plan. Instead of thermal treatment for soil and sediment, EPA decided contaminated soil should be disposed of in a landfill.

In 1998, EPA issued a ROD Amendment that changed the approved cleanup plan to address dioxin (an additional COC) in the burn pit area.

In 2000, EPA issued a ROD Amendment that changed the cleanup approach for ground water from a pump-and-treat system to an on-site funnel-and-gate (F&G) system, which channels ground water through a system of underlying trenches for treatment.

In 1999, EPA issued a cleanup plan (ROD) for OU-2. The plan included the following activities:

Summaries of site cleanup approaches are also available online in key site cleanup documents, including RODs and Five-Year Reviews.

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Cleanup Progress

From 1979 to 1984, because of state enforcement efforts, parties removed about 70,000 pounds of pesticides and pesticide drums from OU-1 and closed a rinse pond.

In 1985, as part of a short-term cleanup action, EPA removed an additional 1,700 pounds of pesticides. EPA also dug up ditch sediments.

In 1993, EPA conducted a short-term cleanup action at OU-2 to remove chemicals, contaminated debris and heavily contaminated surface soils. EPA demolished and removed several on-site structures, dug up and removed the first foot of soil in contaminated areas, and dug up and removed contaminated below-surface soil and debris to a level of 10 parts per million for total pesticides in below-surface soils. EPA removed over 6,000 tons of soil and debris and shipped it to a permitted landfill.

In 1996, PRPs began cleanup actions identified for OU-1 in the 1994 ROD. In 1999, PRPs completed soil cleanup actions. In 1998, PRPs constructed the F&G ground water treatment system. The system continues to run. EPA estimates ground water treatment will continue for 30 years. In addition, PRPs are using MNA for ground water contamination located downhill from the treatment system.

In 1999, EPA began cleanup activities for OU-2. In 2006, EPA completed actions for contaminated soil and sediments. EPA began using MNA for ground water and sediment contamination in 2006 and 2007.

The site’s second Five-Year Review, completed in 2007, found that OU-1 cleanup actions to date continue to protect people and the environment from remaining site contamination. EPA did not make a “protectiveness determination” for OU-2 cleanup actions to date because, at the time of the 2007 Five-Year Review, EPA had only recently started the MNA ground water cleanup approach. EPA will make a “protectiveness determination” for the OU-2 cleanup approach as part of the 2012 Five-Year Review.

Summaries of cleanup activities are also available in Five-Year Reviews online.

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Enforcement Activities

EPA issued an order and negotiated legal agreements with site PRPs to investigate and clean up the site. The PRPs continue to fund OU-1 cleanup, monitoring and oversight activities.

RODs and Five-Year Reviews online provide information on specific legal agreements for the site.

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Community Involvement

EPA has worked with the community and its state partner to develop a long-term cleanup plan for the site, reflecting the Agency’s commitment to safe, healthy communities and environmental protection. Community engagement and public outreach are core components of EPA program activities.

EPA has conducted a range of community involvement activities to solicit community input and to make sure the public remains informed about site activities throughout the cleanup process. Outreach activities have included public notices and information meetings.

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Future Work

PRPs continue to use the F&G system and MNA for OU-1ground water contamination.

EPA continues to use MNA for OU-2 ground water contamination. EPA is evaluating the effectiveness of the approach.

EPA completed the site’s last Five-Year Review in 2012 and plans to complete the next Five-Year Review in 2017.

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Additional Information

EPA keeps additional site documents and information in a site information repository at the location below. EPA also posts site documents, when available, on EPA’s CERCLIS Site Profile page. For documents not available on the website, please contact the Region 4 Freedom of Information Office.

Site Repository

Tifton-Tift County Library
One Library Lane
Tifton, GA  31794

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