Displaying items by tag: toxic waste

EPA consolidated toxic South Knoxville smelter refuse in single on-site landfill.

KNOXVILLE — The Smokey Mountain Smelters site is in the Vestal Community at 1508 Maryville Pike near Montgomery Village Apartments.

“We are excited to announce the cleanup at Smokey Mountain Smelters has been completed,” EPA remedial project manager Peter Johnson said.

From the 1920s through the 1960s, agricultural and chemical companies operated at the site before Smokey Mountain Smelters, also known as Rotary Furnace Inc., came to the location in 1979. The company melted scrap aluminum and aluminum dross together to cast the byproduct into aluminum bars. These operations continued until 1994.

Johnson has said in other talks the dross and saltcakes left over from the process react with water, releasing heat and ammonia gas. They leach aluminum, ammonia, chloride “and many other contaminants,” he said. Smokey Mountain Smelting’s toxins have flowed through groundwater into a tributary of Flenniken Branch, causing concerns about effects on fishing.

In 2010 the EPA placed the site on the Superfund program’s National Priorities List (NPL) because of contaminated soils, sediment and surface water resulting from past industrial operations at the site. The EPA did some cleanup work in 2010 and 2011.

EPA finally capping toxic waste at South Knoxville Superfund site

KNOXVILLE — The Environmental Protection Agency this week began putting a protective cap on the former Smokey Mountain Smelters site to control its pollution.

The EPA said the cap will protect nearby waterways by stopping stormwater runoff from combining with the toxic waste on site. Engineers and workers began the project the week of July 6.

By cutting it off from the stormwater, the EPA hopes to stop toxins from flowing away either through groundwater or runoff. The site is off Maryville Pike in South Knoxville. Caleb Properties purchased two of the site’s three parcels at the Delinquent Property Tax Sale on May 16. EPA is building the cap and storing the waste in the area Caleb Properties purchased. The agency stated Caleb Properties committed to “allocating a portion of the development of the site for community benefit,” and they’ll still have to work with the EPA’s remedy for cleanup. 

Hellbender Press has reported on the cleanup sites and environmental legacies.

Potential water runoff issues stall future Oak Ridge landfill construction

OAK RIDGE — A landfill intended to hold potentially toxic debris from the demolition of legacy Oak Ridge research facilities is moving forward but construction won’t start until it is definitively determined whether the site could pollute ground and surface water.

As reported previously by Hellbenderpress, environmentalists fear toxins leaking out of the proposed landfill could contaminate waterways and make their way into fish that people might catch downstream. The landfill’s contractor, however, said leaving buildings full of toxic residue standing may be more dangerous for workers and nearby residents and the landfill will help get the buildings quickly demolished. The contractor is doing a mock-up study this year to see how best to handle water issues on the future landfill site.

This summer, the contractor United Cleanup Oak Ridge LLC will choose a subcontractor and do field work. Ben Williams, the Department of Energy’s public affairs specialist, said roads and utilities will need to move to get the site ready at that time. But UCOR stated it won’t build the landfill until after a water study spanning “two wet seasons,” beginning later this year.