United States Environmental Protection Agency Enforcement and Compliance Assurance (2201 A) EPA 520-F-96-004 Spring 1996 V>EPA Superfund At Work Hazardous Waste Cleanup Efforts Nationwide Vast segments of the Arkansas River are within the Central Flyway, a major migratory route for thousands of birds. Success in Brief Cooperative Efforts Protect River Ecosystem From Toxic Waste A 10-minute drive from the Tulsa, Oklahoma city line, a lime- stone quarry served as a landfill for oil refining and manufactur- ing residues. Co-mingled with municipal garbage, industrial wastes caught fire or erupted underground, polluting soil and tainting area ground water. At the base of the cliff, the Arkansas River traversed the edge of the Osage Indian Reservation where hundreds of years ago bald eagles plucked fish from the shallow waters. This site, where ancient meets modern, was chosen by the U.S. Environmental Protection Agency (EPA) for cleanup under a special program called the Superfund. Effective enforcement provisions in the law convinced a few conscientious companies to step forward and assume responsibility for cleanup. The remedial work took less than two years and demonstrates the way the Superfund pro- gram works best: protect- ing the surrounding ecosys- tem. The Site Today A protective cap seals the old landfill with a top layer of grasses and ground covers. Methane gas is vented through an underground piping network. A five-year review is scheduled to evalu- ate the integrity of the cap and other measures taken to halt the migration of leachate into the river. ------- Superfund At Work • Compass Industries Site, Tulsa, OK • Spring 1996 A Site Snapshot The Compass Industries Superfund site was a 46-acre abandoned landfill eight miles west of Tulsa, Okla- homa. The site perched 200 feet above the Arkansas River; runoff from the land- fill trickled down the bluff to the river ecosystem be- low. The Compass Industries site was originally a lime- stone quarry from the 1950s until the late 1960s. For more than a decade, operators converted the quarry into a major municipal landfill for the Tulsa area, accepting both household garbage and in- dustrial wastes. Poor operating burning at the landfill. Soil practices led to the landfill's samples later revealed sol- eventual closure. vents, heavy metals, pesti- The site is directly west of cides, and polychlorinated Chandler Park, a county softball biphenyls (PCBs). Exposure to these toxins Compass Industries Site Tulsa, OK and recreational area; the closest residence is within a quarter mile. Local residents complained about poor air quality and noxious smoke and soot from fires can cause cen- tral nervous system disor- ders and in- crease the risk of various cancers. Seasonal precipi- tation leached unknown quantities of haz- ardous substances into sur- face and ground water caus- ing insidious environmental effects. ------- Superfund At Work • Compass Industries Site, Tulsa, OK • Spring 1996 Bite The Bullet, Take Responsibility Out of Sight, Out of Mind Like so many other landfills across the states, the site owners saw an old quarry as the ideal place to throw stuff away. The City of Tulsa was growing and expanding, trying to meet the needs of oil drilling and refin- ing companies that sprang up all over the southwest. City and county officials petitioned the Oklahoma State Department of Health (OSDH), which granted a permit to the Compass Indus- tries landfill for disposal of municipal waste from 1972 to 1976. State investigations would later reveal, however, that hazardous waste dumping may have taken place as early as 1964. Twenty years later, the landfill contained a volatile mix of oily sludges, jet fuel, bleaches, solvents, benzene, PCBs, and pesticides. Fires and Air Pollution Cause Complaints In early 1983, EPA and OSDH investigated residents' reports about open burning and soot in the air and took water samples. The site had come under scru- tiny following passage of the Comprehensive Environmental Response, Compensation, and Liability Act of 1980. Under this new law, Congress empow- ered EPA to begin cleaning up uncontrolled hazardous waste sites across the nation. Instead of using taxpayer dollars, a "Superfund" based on excise taxes levied on chemical feed- stocks and crude oil would support cleanup efforts. States nominated their worst sites; Compass Industries was placed on the National Priorities List (NPL) in 1984. State Conducts Field Studies For the next two years, OSDH contracted with EPA to conduct comprehensive site studies to determine the nature and extent of site contamina- tion. EPA weighed the options and selected a remedy to stabi- lize and contain the site wastes. ------- Superfund At Work • Compass Industries Site, Tulsa, OK • Spring 1996 for Others In 1987, EPA presented a pro- posed cleanup plan to the community that included cap- ping the landfill, ground water treatment, if necessary, and a 30-year monitoring program. EPA Negotiates for Cleanup Having searched old records and deposit slips maintained by the former operators of the site, EPA identified the major waste contributors and transporters. Negotiations commenced in 1988 but failed to coalesce a group that would assume financial responsibility. EPA proceeded to design the se- lected remedy using Superfund resources, and then in 1989, issued a unilateral administra- tive order to seven parties. Only Texaco, Inc., Standard Royalties Inc., and Sun Refining and Marketing Corporation agreed to perform the remedial work which mobilized in the winter of 1990. EPA continues SAMPLE LOCATIONS } SURFACE WATER OR SEDIMENT • SEEP WATER LOCATION ® BACKGROUND SEEP LOCATION if GAS VENTS • CAP BOUNDARY Compass Industries Site Location Map to pursue other parties to re- cover cleanup costs and is close to concluding agreements with waste contributors who sent very small quantities of hazard- ous substances to the site. Remedial Work Takes Less Than Two Years Once under way, construc- tion crews built access roads, began controlling surface runoff from the site, and provided 24- hour security. EPA entered into an interagency agreement with the U.S. Army Corps of Engi- neers to oversee the work. Crews installed a multi-layer cover over the landfill with a high density polyethylene liner to exclude precipitation. Engi- neers included a methane ventilation system to relieve gas buildup under the cap and prevent recurrence of under- ground fires. Air monitoring equipment operated continu- ously and served as an early warning system to detect any toxic vapors generated by the work. To control surface water runoff, crews had to reduce overland flows by building a drainage system to divert water to natural runoff channels of the Arkansas River. They also built an earthen berm to control erosion below the site. Perseverance and hard work paid off with completion of the remedial action in October, continued on page 6 ------- Superfund At Work • Compass Industries Site, Tulsa, OK • Spring 1996 The Arkansas: River Ecosystem Supports Impressive List of Species One of the major western tributaries of the mighty Mississippi is the Arkansas, a meandering, vital river that drains a watershed of 160,600 square miles. Originating in the Sawateh Range of the Wheat is but one of the diverse species the river ecosys- tem supports. Vast segments are within the Central Fly way, a major migratory route for ducks, geese, sandhill cranes, warblers, and other songbirds. At Tulsa, where the river turns to the south, the gable waterway for shipment of the river basin's resources. Not just a body of water for wastes and industrial effluent, the river is a living ecosystem: a synergism of plants, insects, aquatic animals, fish, birds, and land species that form a complex web of interdepen- dency. An action taken at any level in the food chain has a „ potential domino effect on every other part of that system. The Superfund program recognized the delete- rious effect a leaching Rocky Mountains near Leadville, Colorado, the Arkansas drops 11,400 feet, coursing 1,450 miles and four states. About 100 miles from the headwaters, the river leaves the mountains through the Royal Gorge, a narrow can- yon cut into solid granite with vertical walls more than 1,000 feet high. The Bureau of Land Management studied this segment of the river for inclusion in the National Wild and Scenic Rivers Pro- gram. Once on the plains, the channel becomes wide and shallow as the flow is di- verted to agricultural crops all through Kansas. Ameri- can bald eagle nests in the cliffs. In Colorado, where the waters are icy cold, trout species abound. At the opposite end in Arkansas, the paddlefish with her spatula- shaped snout, produces the best caviar in the continental U.S. The beavers of old once plied the wetland backwaters before fur traders nearly wiped out this industrious aquatic mam- mal. Today, 17 locks and dams control the Arkansas' yearly flooding and provide a navi- landfill had on the segment of the Arkansas at Compass Industries and downriver. The concerted efforts of all those who worked at the site — private, state, and federal — helped to encourage the return of the natural order. The Arkansas continues the never-ending journey and supports biodiversity along the way. ------- Superfund At Work • Compass , Tulsa, OK • Spring 1996 continued from page 4 1991. The community was invited to an "open house" to ask questions about the techni- cal aspects of the work. Surface water samples have been taken quarterly ever since and will continue under a 30- year site monitoring program. All samples to date have tested to be clean. This year, the site will be comprehensively re- viewed for effectiveness of the remedy and the possibility of delisting from the NPL. 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