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Sod House



Page Last Updated January 23, 2018


City: Cyril
County: Caddo
Site Type: Refinery
Area: 0.34 square miles / 220 acres
Township and Range: Section 18-19, Township 5 North, Range 9 West
Latitude: 34.89420200
Longitude: -98.19819117
National Priorities List: Final Listing Date - February 21, 1990
Cleanup Oversight Agencies: DEQ, EPA
Lead Agency: DEQ
Office: DEQ, Land Protection Division, (405) 702-5100
DEQ Site Project Manager: Chanh Le, (405) 702-5102
DEQ Press Contact: Erin Hatfield, (405) 702-7119
Current Status: Cleanup underway

Oklahoma Refining Co

Oklahoma Refining Co. Superfund Site Landfill - Caddo County, Oklahoma


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Land Use Restrictions:

A deed notice is currently in place for the site, with restrictions on drilling new wells and digging in capped areas. The site is zoned for industrial redevelopment.

Regulatory Profile:

• Sources of Contamination: Leaking tanks, product lines, pits and surface impoundments
• Contaminants of Concern: Metals, VOCs (Volatile Organic Compounds), Petroleum, Organics, Aromatic Hydrocarbons
• Groundwater Impacted: Rush Springs Sandstone Aquifer
• Surface Water Impacted: Gladys Creek

Site History and Background:

Operations at the Oklahoma Refining Company site began in 1920 by the Anderson Pritchard Company (APCO). The ORC site was operated as a refinery under several different owners until 1994. Refining processes that took place included crude distillation, vacuum distillation, catalyst cracking, alkylation, bimetallic reforming, and downstream processing. Solid waste from these processes was kept in on-site surface pits and wastewater was sent through an oil-water separator, followed by treatment in impoundments. The water was then discharged into Gladys Creek. Over many years of production, contaminants leaked into the soil, sediment, surface water and shallow groundwater beneath the site. These contaminants include heavy metals, VOCs, petroleum products and other hydrocarbons. Also, areas of low and high pH ground water have been noted at the ORC site.

Work Completed:

The cleanup of soil and sediments in the southern portion of the ORC site has been completed. The remedy for the soils included:

• Bioremediation of organic wastes: 93,000 cubic yards
• Neutralization of acidic waste: 16,000 cubic yards
• Stabilization of metal containing waste: 14,000 cubic yards
• Removal of asphaltic material: 38,000 cubic yards

In August of 2003, EPA Emergency Response Branch demolished and removed the oil refinery structures, equipment, and chemicals on the northwestern region of the site. Two onsite landfills were built to contain site wastes. They were initially used as bio-treatment cells before final capping.

Cleanup Status:

Oklahoma Refining Company Superfund Site is currently divided into three separate operable units.

Operable Unit 1 (ORC South): The cleanup of soil, pond sediment, and waste areas are complete on the southern portion of the site.

Operable Unit 2 (ORC North): A Supplemental Feasibility Study has been completed to evaluate cleanup options, and a Proposed Plan has been completed to present these cleanup options for the remaining soil, sediment, and light non-aqueous phase liquid contamination in the north area of the site. On June 17, 2013, a Record of Decision was signed to document how the soil, sediment, and light non-aqueous phase liquid contamination in the north area of the site will be cleaned up. DEQ is currently performing a Remedial Design based on the Record of Decision; it is scheduled to be completed in October 2018. Remedial design is the phase in Superfund site cleanup where the technical specifications for cleanup are developed. Remedial action will follow the remedial design phase and will involve the actual construction of the remedy.

Operable Unit 3 (Ground water, N. Gladys Creek Sediment and Surface water): Site-wide ground water contamination will be addressed in a future decision document. A Remedial Investigation/Feasibility Study (RI/FS) is currently being conducted focusing on ground water and surface water at the site. Three phases for the RI/FS are planned: Phase 1 includes gathering and reviewing existing data, field investigations and sampling. Phase 1 will begin early 2017. Phase 2 may include sampling and analysis of ground water to fill in any gaps and determine off-site ground water contamination. Phase 3 will be the FS, which includes the development and evaluation of cleanup alternatives for ground water, surface water in Gladys Creek, and North Gladys Creek sediment.

Did You Know? This refinery began in 1909 and was one of over 400 refineries that operated in the state at one time.

Supporting Documents