Superfund Site Profile

The 26.6-acre Dixie Oil Processors, Inc. (DOP) site is located in Harris County, Texas, about 20 miles southeast of Houston, Texas. The site includes areas north and south of Dixie Farm Road. The property north of Dixie Farm Road is referred to as “DOP north.” The property south of Dixie Farm Road is referred to as “DOP south.” A copper recovery and hydrocarbon washing facility operated on the DOP north property. Past uses on the DOP south property included hydrocarbon washing to produce various chemicals, oil recovery and blending, and distillation of residues from local chemical plants and refineries to produce petroleum products. Site activities and waste disposal practices contaminated soil and groundwater with hazardous chemicals. Following cleanup, EPA took the site off the Superfund program’s National Priorities List (NPL) in 2006. Operation and maintenance activities are ongoing.

Current Status

The site is currently undergoing operations and maintenance. The fourth five-year review report, completed in September 2013, determined that the remedy is functioning as intended and remains protective of human health and the environment in the short term. Long term protectiveness of the remedial action will be verified by continuing monitoring of groundwater to assess the effectiveness of the Site controls. The next five-year review will be completed in 2018.

The Site was deleted from the National Priorities List (Superfund) in August 2006.

Dixie Oil Processors (DOP) is a former industrial facility located approximately 20 miles southeast of Houston in Harris County Texas. DOP North was operated as a copper recovery and hydrocarbon washing facility from 1969 through 1978. A total of six surface pits were used to store and treat wastewater prior to recovery and discharge. The pits were closed between 1975 and 1977. Several operations occurred at DOP South from 1978 through 1986. These included hydrocarbon washing to produce various chemicals, oil recovery, and blending and distilling residues from local chemical plants and refineries to produce various petroleum products including fuel oil, creosote extender, and a molybdenum concentrate catalyst. Active operations at the site stopped in 1986. The EPA issued a Record of Decision (ROD) for the DOP site on March 31, 1988. The ROD selecting limited action and monitoring, including fluids stabilization and a site cover with institutional controls.


The completion of the construction of the containment remedy in 1993 provided long-term reduction of risk to human health. The soil cover over the site reduces the risk from direct contact with the residual wastes at the site.
The site is classified as ready for anticipated use (non-residential).

National Priorities Listing (NPL) History
Proposed Date: 06/24/1988
Final Date: 10/04/1989
Deletion Proposal Date: 06/23/2006
Final Deletion Date: 08/22/2006



Yes (06/09/1993)
Human Exposure

Under Control
Contaminated Ground
Water Status
Under Control
Site-Wide Ready for
Anticipated Use?