Upper East Fork Poplar Creek is pictured above at the Y-12 National Security Complex in Oak Ridge on Friday, May 22, 2020. (Photo by John Huotari/Oak Ridge Today)
More than 4,000 fish and crayfish were killed by chlorinated water and mercury at the Y-12 National Security Complex in two series of incidents in 2018 and 2021.
The rest of this story, which you will read only on Oak Ridge Today, is available if you are a member: a subscriber, advertiser, or contributor to Oak Ridge Today.
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Upper East Fork Poplar Creek is pictured above at the Y-12 National Security Complex in Oak Ridge on Friday, May 22, 2020. (Photo by John Huotari/Oak Ridge Today)
More than 4,000 fish and crayfish were killed by chlorinated water and mercury at the Y-12 National Security Complex in two series of incidents in 2018 and 2021.
The rest of this story, which you will read only on Oak Ridge Today, is available if you are a member: a subscriber, advertiser, or contributor to Oak Ridge Today.
If you prefer to send a check, you may do so by mailing one to:
Oak Ridge Today P.O. Box 6064 Oak Ridge, TN 37831
We also have advanced subscription options. You can see them here.
We also accept donations. You can donate here. A donation of $50 or more will make you eligible for a subscription.
Thank you for reading Oak Ridge Today. We appreciate your support!
Upper East Fork Poplar Creek is pictured above at the Y-12 National Security Complex in Oak Ridge on Friday, May 22, 2020. (Photo by John Huotari/Oak Ridge Today)
More than 4,000 fish and crayfish were killed by chlorinated water and mercury at the Y-12 National Security Complex in two series of incidents in 2018 and 2021.
The first series of incidents was likely caused by the release of mercury while crews were cleaning up and removing equipment at the Alpha-4 Building on the west side of Y-12, according to scientists and officials. Alpha-4 is the most contaminated of the four major mercury-contaminated buildings at Y-12. Millions of pounds of mercury were used at Y-12 decades ago to produce nuclear weapons parts. Removing mercury-contaminated buildings, equipment, and soil remains one of the top challenges of cleaning up the Oak Ridge Reservation.
Upper East Fork Poplar Creek is pictured above at the Y-12 National Security Complex in Oak Ridge on Friday, May 22, 2020. (Photo by John Huotari/Oak Ridge Today)
More than 4,000 fish and crayfish were killed by chlorinated water and mercury at the Y-12 National Security Complex in two series of incidents in 2018 and 2021.
The rest of this story, which you will read only on Oak Ridge Today, is available if you are a member: a subscriber, advertiser, or contributor to Oak Ridge Today.
An Oak Ridge wastewater overflow tank is pictured above on Emory Valley Road on Tuesday, June 1, 2021. (Photo by John Huotari/Oak Ridge Today)
Note: This story was last updated at 3:20 p.m. June 6.
Millions of gallons in sewer system overflows were reported to the state by the City of Oak Ridge between 2012 and 2017, and most of the largest overflows—500,000 gallons or more—were reported in the summer of 2013, according to a federal lawsuit that could be settled soon.
The lawsuit by Tennessee Riverkeeper, a nonprofit organization based in Alabama, was filed in U.S. District Court in Knoxville in 2018. It alleged that the city had reported about 40 million gallons of sewer system overflows in a four-year period near local waters and that the city had violated the Clean Water Act. The city denied the claim. The lawsuit had sought to force the city to make repairs to keep pollutants out of creeks and rivers, and to charge the city $37,500 per violation per day. It also asked the city to pay reasonable attorney’s fees and expert fees. Riverkeeper said the discharges have affected how often its members use the Tennessee River and its tributaries for recreation. The discharges continued through at least early 2017, with more overflows reported later, according to the lawsuit and legal documents filed in the case.
Now, the lawsuit could be settled if the court approves and Oak Ridge makes at least $4 million in repairs by 2025 and pays more than $100,000 in attorneys’ fees. The settlement agreement was approved by City Council in May. A notice about the agreement was filed in U.S. District Court in Knoxville on Thursday.
The largest overflows, by volume, were reported about two years before the city completed millions of dollars worth of repairs to its aging sewer system and built three large wastewater holding tanks after an order from the U.S. Environmental Protection Agency in 2010. The EPA order had required the city to bring itself into compliance with its discharge permit. However, the overflows continued even after the city said it had satisfied the conditions of the EPA order, according to the lawsuit, although the overflows appeared to be at a lower volume than in the summer of 2013.
Legal arguments in the case have included debate over whether Tennessee Riverkeeper has standing—someone who had been injured by the sewer system overflows—and whether the discharges have continued.
The rest of this story, which you will read only on Oak Ridge Today, is available if you are a member: a subscriber, advertiser, or contributor to Oak Ridge Today.
If you prefer to send a check, you may do so by mailing one to:
Oak Ridge Today P.O. Box 6064 Oak Ridge, TN 37831
We also have advanced subscription options. You can see them here.
We also accept donations. You can donate here. A donation of $50 or more will make you eligible for a subscription.
Thank you for reading Oak Ridge Today. We appreciate your support!
An Oak Ridge wastewater overflow tank is pictured above on Emory Valley Road on Tuesday, June 1, 2021. (Photo by John Huotari/Oak Ridge Today)
Note: This story was last updated at 3:20 p.m. June 6.
Millions of gallons in sewer system overflows were reported to the state by the City of Oak Ridge between 2012 and 2017, and most of the largest overflows—500,000 gallons or more each—were reported in the summer of 2013, according to a federal lawsuit that could be settled soon.
An Oak Ridge wastewater overflow tank is pictured above on Emory Valley Road on Tuesday, June 1, 2021. (Photo by John Huotari/Oak Ridge Today)
Note: This story was last updated at 3:20 p.m. June 6.
Millions of gallons in sewer system overflows were reported to the state by the City of Oak Ridge between 2012 and 2017, and most of the largest overflows—500,000 gallons or more—were reported in the summer of 2013, according to a federal lawsuit that could be settled soon.
The lawsuit by Tennessee Riverkeeper, a nonprofit organization based in Alabama, was filed in U.S. District Court in Knoxville in 2018. It alleged that the city had reported about 40 million gallons of sewer system overflows in a four-year period near local waters and that the city had violated the Clean Water Act. The city denied the claim. The lawsuit had sought to force the city to make repairs to keep pollutants out of creeks and rivers, and to charge the city $37,500 per violation per day. It also asked the city to pay reasonable attorney’s fees and expert fees. Riverkeeper said the discharges have affected how often its members use the Tennessee River and its tributaries for recreation. The discharges continued through at least early 2017, with more overflows reported later, according to the lawsuit and legal documents filed in the case.
Now, the lawsuit could be settled if the court approves and Oak Ridge makes at least $4 million in repairs by 2025 and pays more than $100,000 in attorneys’ fees. The settlement agreement was approved by City Council in May. A notice about the agreement was filed in U.S. District Court in Knoxville on Thursday.
The largest overflows, by volume, were reported about two years before the city completed millions of dollars worth of repairs to its aging sewer system and built three large wastewater holding tanks after an order from the U.S. Environmental Protection Agency in 2010. The EPA order had required the city to bring itself into compliance with its discharge permit. However, the overflows continued even after the city said it had satisfied the conditions of the EPA order, according to the lawsuit, although the overflows appeared to be at a lower volume than in the summer of 2013.
Legal arguments in the case have included debate over whether Tennessee Riverkeeper has standing—someone who had been injured by the sewer system overflows—and whether the discharges have continued.
The rest of this story, which you will read only on Oak Ridge Today, is available if you are a member: a subscriber, advertiser, or contributor to Oak Ridge Today.
Workers remove asphalt on the east end of the Y-12 National Security Complex, where the Mercury Treatment Facility treatment plant will be built. (Photo courtesy U.S. Department of Energy Oak Ridge Office of Environmental Management)
Work began in June to build the Mercury Treatment Facility at the Y-12 National Security Complex.
The Mercury Treatment Facility will allow the U.S. Department of Energy to clean up and demolish several large Y-12 buildings that used mercury to separate lithium for nuclear weapons during the Cold War in the 1950s and 1960s. The facility is expected to help reduce the amount of mercury in East Fork Poplar Creek, which flows through Oak Ridge.
DOE announced in December that it had awarded a $91 million contract to build the Mercury Treatment Facility. The contract, which could be in place for up to four years, was awarded to APTIM-North Wind Construction JV LLC.
Site preparation crews constructed two secant pile retaining walls to retain soils, control water seepage, and provide a deep, secure foundation for the water intake structure at the new Mercury Treatment Facility at Y-12 National Security Complex. (Photo via DOE’s EM Update on Tuesday, Dec. 11, 2018)
The U.S. Department of Energy announced Tuesday that it has completed the site preparations for the construction of the Mercury Treatment Facility at the Y-12 National Security Complex.
The Mercury Treatment Facility will allow DOE to clean up and demolish several large Y-12 buildings that used mercury to separate lithium for use in nuclear weapons during the Cold War (in the 1950s and 1960s). It’s part of a large-scale cleanup and demolition project at Y-12 and an effort to reduce the amount of mercury in East Fork Poplar Creek, which flows through Oak Ridge.
DOE announced on Tuesday, December 4, that it had awarded a $91 million contract to build the Mercury Treatment Facility at Y-12. The contract, which could be in place for up to four years, was awarded to APTIM-North Wind Construction JV LLC.
DOE said early site preparation activities were started by other contractors in December 2017. A groundbreaking was held at the site in November 2017, and UCOR, DOE’s lead cleanup contractor in Oak Ridge, began work at the treatment facility site with a subcontractor after the groundbreaking, the DOE Oak Ridge Office of Environmental Management said in a story published Tuesday in an EM Update.
The Mercury Treatment Facility will have two components: a headworks facility and a treatment plant connected by a pipeline. The headworks facility will capture creek flow on the west end of Y-12, store excess stormwater collected during large rainfalls, remove grit, and pump water through the pipeline to the treatment plant on the east side of Y-12. The treated water will then flow into East Fork Poplar Creek. [Read more…]
The planned Mercury Treatment Facility at the Y-12 National Security Complex in Oak Ridge. (Image courtesy UCOR/U.S. Department of Energy Oak Ridge Office of Environmental Management)
The U.S. Department of Energy has awarded a $91 million contract to build the Mercury Treatment Facility at the Y-12 National Security Complex.
It’s part of an effort to reduce the amount of mercury in East Fork Poplar Creek and allow the demolition of several large Y-12 buildings where mercury was used to help make nuclear weapons during the Cold War.
The contract, which could be in place for up to four years, was awarded to APTIM-North Wind Construction JV LLC, DOE said Tuesday. [Read more…]
The new Mercury Treatment Facility at the Y-12 National Security Complex will help reduce the amount of mercury that gets into East Fork Poplar Creek and allow the demolition of four large buildings where mercury was used to help make nuclear weapons during the Cold War, officials said during a groundbreaking ceremony on Monday, Nov. 20, 2017. (Photo by John Huotari/Oak Ridge Today)
Note: This story was last updated at 10:45 p.m.
The new Mercury Treatment Facility at the Y-12 National Security Complex will help reduce the amount of mercury that gets into East Fork Poplar Creek and allow the demolition of four large buildings where mercury was used to help make nuclear weapons during the Cold War, officials said Monday.
Mercury contamination is one of the biggest problems remaining from the Cold War, U.S. Senator Lamar Alexander said during a groundbreaking ceremony on Monday morning. Alexander, a Tennessee Republican, first announced the new treatment facility at Y-12 more than four years ago.
“In May 2013, I came to Oak Ridge to announce that a new water treatment facility would be built at Y-12 at the head of the East Fork Poplar Creek to prevent mercury that was once used to make nuclear weapons from getting into our waterways,” Alexander said. “That day, I made a personal commitment to address one of the biggest problems we have from the Cold War era—mercury contamination—and help fund a solution. Today, I am proud to see that we are breaking ground on the new water treatment facility.”
Site preparation for the new Mercury Treatment Facility is expected to start this year, with the rest of construction beginning in late 2018. The facility is expected to start operating in late 2022.
The treatment plant will allow workers to demolish four large buildings where mercury, a toxic metal, was once used: Alpha 2, Alpha 4, Alpha 5, and Beta 4. Work on those buildings, mostly on the west side of Y-12, could start by 2024. [Read more…]
The planned Mercury Treatment Facility at the Y-12 National Security Complex in Oak Ridge. (Image courtesy UCOR/U.S. Department of Energy Oak Ridge Office of Environmental Management)
A groundbreaking has been scheduled for Monday morning for the Mercury Treatment Facility at the Y-12 National Security Complex.
Y-12 operations have historically used large amounts of mercury, and many of the buildings, now in varying states of deterioration, have mercury contamination, a media advisory said.
“The treatment facility will lower existing mercury levels from past releases and will serve as a guard against a potential increase in releases as mercury-contaminated buildings are demolished,” the media advisory said.
Deputy Energy Secretary Dan Brouillette will attend the groundbreaking, which is at Y-12 and not open to the public. U.S. Senator Lamar Alexander and U.S. Representative Chuck Fleischmann, both Tennessee Republicans, will also attend the groundbreaking, the media advisory said.
The groundbreaking is being presented by the U.S. Department of Energy and URS|CH2M Oak Ridge LLC, or UCOR, DOE’s cleanup contractor at federal sites in Oak Ridge. [Read more…]
The planned Mercury Treatment Facility at the Y-12 National Security Complex in Oak Ridge. (Image courtesy UCOR/U.S. Department of Energy Oak Ridge Office of Environmental Management)
Note: This story was last updated at 2:30 p.m.
UCOR, the federal government’s cleanup contractor in Oak Ridge, has awarded a $1.4 million contract to a Knoxville company for early site preparation activities for the Mercury Treatment Facility at the Y-12 National Security Complex in Oak Ridge, and the work could start in November.
GEM Technologies of Knoxville will perform the work for the new Outfall 200 Mercury Treatment Facility at Y-12, UCOR said in a press release Tuesday.
UCOR is also known as URS | CH2M Oak Ridge LLC.
Under the contract, GEM Technologies will perform limited demolition of existing abandoned utilities and the extension of new utilities—including electrical power, water, sewer, and storm drains—to the treatment facility sites, the press release said. [Read more…]
The fiscal year 2017 Oak Ridge Site Specific Advisory Board is pictured above. (Photo by SSAB)
A federal board has recommended five cleanup priorities for the Oak Ridge Reservation: offsite groundwater monitoring, future waste disposal capacity, the disposal of excess facilities, mercury in East Fork Poplar Creek, and remaining debris at the East Tennessee Technology Park.
The recommendations were made by the Oak Ridge Site Specific Advisory Board. That’s a federally appointed citizens’ panel that provides independent advice and recommendations to the U.S. Department of Energy’s Oak Ridge Office of Environmental Management.
The recommendations are for the fiscal year 2019 environmental management budget, which begins October 1, 2018.
“ORSSAB has identified five priorities for Oak Ridge Reservation cleanup, and recommends that the FY 2019 Oak Ridge EM program budget request reflect adequate funding to keep these projects going,” the board said. “Also, when additional funds from suitable plus-ups and savings become available, it recommends that these funds be targeted for these projects.”
The Mercury Treatment Facility that will be at the east end of Y-12 National Security Complex could start operating in 2022. (Image by David Brown/U.S. Department of Energy)
Note: This story was updated at 2 p.m.
Site preparation could start later this year for the Mercury Treatment Facility at the Y-12 National Security Complex as the U.S. Department of Energy prepares for demolition and cleanup work at the nuclear weapons plant.
DOE’s Oak Ridge Office of Environmental Management, or OREM, expects to complete demolition and cleanup work at the East Tennessee Technology Park, the former K-25 site, in 2020. It will then focus on the large-scale demolition work at Y-12.
Among the Y-12 buildings that could be demolished are Alpha 4, Alpha 5, and Beta 4, all large buildings where mercury, a toxic metal, was once used. The buildings used mercury to separate lithium for nuclear weapons. The lithium separation operations started in 1955 and ended in 1963.
But before that cleanup work can begin, OREMÂ needs the Mercury Treatment Facility. The plant was first announced at a press conference featuring U.S. Senator Lamar Alexander, a Tennessee Republican, about four years ago, in May 2013.
“This water treatment plant is a major step in addressing one of the biggest problems we have from the Cold War era—mercury once used to make nuclear weapons getting into our waterways,†Alexander said at the time. [Read more…]
Floodwaters rose close to road level at the intersection of Oak Ridge Turnpike and Illinois Avenue after heavy rains fell in Oak Ridge on Saturday afternoon and evening, April 22, 2017. (Photo by John Huotari/Oak Ridge Today)
Oak Ridge emergency workers responded to a car crash that injured two people, two fallen trees, and a possible apartment complex evacuation due to flooding during the severe thunderstorms on Saturday.
Heavy rain from the storms led to widespread flooding in Oak Ridge starting late Saturday afternoon. The water appeared to have receded in places a few hours later, or by early Saturday night.
Emergency workers made preparations Saturday evening to possibly evacuate apartments on Royce Circle, where water covered part of the roadway and rose near the first floor of an apartment complex at the northeast end of the circle. The apartments, which are next to Robertsville Road and just east of Willow Brook Elementary School, are in a low-lying area between two creeks that flow down along Jefferson Avenue and intersect with East Fork Poplar Creek, which was swollen with floodwaters on Saturday.
Authorities had made preparations to see how many people lived on the first floor of the Royce Circle apartment complex in case the residents had to be evacuated, Oak Ridge Fire Department Chief Darryl Kerley said. Of the 10 people there, all but one had another place to go, he said. Authorities were watching the water, Kerley said.
“We think it’s receding,” he said Saturday night. [Read more…]
Andrew King loads a gel with amplified gene fragments to detect the presence of mercury methylation genes in samples from East Fork Poplar Creek in Oak Ridge. (Photo by ORNL)
Environmental scientists can more efficiently detect genes required to convert mercury in the environment into more toxic methylmercury with molecular probes developed by researchers at the U.S. Department of Energy’s Oak Ridge National Laboratory. The research could help the cleanup work at the Y-12 National Security Complex.
“We now have a quick and easy-to-use tool that we can employ in any environment to test for the presence of microorganisms capable of methylating mercury and determine how abundant they are,†said ORNL’s Geoff Christensen, a post-doc and lead author of a paper published in Applied and Environmental Microbiology.
In 2013, ORNL researchers reported in Science on the discovery of two genes known to transform inorganic mercury into its highly toxic organic form. Development of the newly validated probes further advances research to protect human health, a press release said.
For this study, researchers tested the probes against 31 strains of microorganisms for which they know the ones that produce methylmercury and scored a 94 percent confirmation rate, the press release said. This validation procedure is critical to the next step of moving the probes into the field to help determine the amount of methylmercury likely to be generated in any given environment. [Read more…]
