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A hazardous waste site becomes ‘San Francisco’s Next Great Park’

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Tuesday, October 29, 2024

Since he moved to Bayview at five years old, Darryl Watkins wondered why a neglected lot, called 900 Innes, was closed off. He often played basketball at India Basin Shoreline Park next to the yard sloping into the Bay, and peeked through the fence to find dirt, trash, neglected buildings, and a dilapidated cottage that housed shipbuilders over a century ago. It was in such disrepair that Watkins never imagined it could be a park. The parks he liked had clean bathrooms, trees, and nature—things found outside of his community. Over $200 million and four years of remediation and construction later, the fences enclosing the yard finally opened on October 19. It’s the first time residents will be able to step foot on the completely transformed property, with two new piers, a floating dock, a food pavilion, and access to some of San Francisco’s last remaining natural shoreline. The 900 Innes opening marks the completion of the second phase of a three-part plan that combines the existing India Basin Shoreline Park and 900 Innes property into one 10-acre waterfront park, while closing a major gap on the 13-mile San Francisco Blue Greenway-Bay Trail.  The 900 Innes Waterfront Park unveiling on October 19; section of the San Francisco Blue Greenway-Bay Trail; Mayor London Breed cutting the ribbon on opening day (Photos by Jillian Magtoto) The San Francisco Recreation and Parks Department (RPD)  is calling it “San Francisco’s Next Great Park” that will bring the city’s southern waterfront up to par with iconic public spaces such as Crissy Field, Washington Square Park, and Golden Gate Park. Beyond the flashy claims, the RPD wants the park to benefit local residents long burdened by a history of industrial pollution. “It’s southeast communities where the city has put all of its crap. We put our water treatment plants, we put our power plants, we put everything that no one else wanted in the city,” says David Froehlich, the RPD project manager of remediation for all three India Basin Park projects. “Whether we built a park here or not, we always promise the community that we would leave this site cleaner than it was when we purchased it.” Some Bayview-Hunters Point locals aren’t convinced RPD has done enough, while others are hopeful the park was indeed adequately remediated. “It’s been a long time coming,” says Jill Fox, who has lived across the street from 900 Innes Ave for over 30 years. “Our fingers are crossed that it will be a good thing for our community.” The old shipyard at 900 Innes Ave along San Francisco’s India Basin has long worn the past of industrial boating. The blacksmith shop, boatyard office, and tool shed had partially or almost completely collapsed. Old overhead power lines sparked and caught on fire, according to residents. The ground was blanketed with concrete, brick, glass, and wood fragments that thickened up to forty feet down into the water. It was sold to private businesses in 1991 and passed between different owners for decades, serving various roles as a homeless encampment, illegal drug lab, and construction storage yard. It remained undeveloped and inaccessible to the public until community members advocated for the property to be acquired by the RPD in 2014. “I always thought 900 Innes would be much better as a respite, a place to be with nature,” says Fox, who participated in the effort towards the lot’s public acquisition. “RPD had the funds and owned properties on either side of it.” A rendition of the India Basin Waterfront Park Project, the combination of the renovated India Basin Shoreline Park and the neighboring 900 Innes property. The result will be a 10-acre waterfront park, planned to be completed in 2026 (left); map of India Basin (right) (Photos courtesy of India Basin Waterfront Park) But the site was far from being a natural respite. Soil samples in 2017 revealed elevated levels of PCBs, petroleum hydrocarbons, and heavy metals from painting, waterproofing, and other boating activities, especially concentrated near boat launch sites. Before it could ever become a place for people, a significant cleanup was in order. “There were a lot of regulatory agencies that were involved,” says Froehlich. “And permits that I wasn’t typically used to.” Local, state, and federal agencies oversaw the remediation, including the Army Corps of Engineers, the Environmental Protection Agency, California State Water Board, and the San Francisco Water Quality Control Board. They monitored the site as the RPD installed a temporary water barrier to push back the Bay water, like the rim of a massive inflatable pool, to remove layers of concrete and up to two feet of contaminated soil. In 2022, the last year of remediation, they discovered the contaminants spread deeper. They found lead, mercury, and PCBs up to seven feet below ground, according to the Remedial Action Plan. “We excavated down to a completely clean site and put clean cover on top of that, using soil from a virgin quarry in the East Bay,” says Froehlich. “So, in theory, it’s a completely clean site.” Water barrier installed during remediation (Photo by San Francisco Recreation and Parks Department)Still, some community advocates remain unsure. “We support a new and improved park in theory, but as long as it can be clean and safe,” says Bradley Angel, the director of Greenaction, a San Francisco-based health and environmental justice nonprofit. The city’s only Superfund site is just a third of a mile southeast from 900 Innes, a former naval laboratory that leaked petroleum, pesticides, and radioactive waste into the ground for 40 years. This contamination remained unknown until 2012, when the Navy discovered that the federally-contracted consulting firm Tetra Tech EC falsified their data. While the Navy allowed Tetra Tech to clear itself in an internal investigation, whistleblowers in 2017 alleged that the Navy mishandled cleanup efforts and covered up the extent of the pollution, in a lawsuit led by Greenaction against the EPA and Navy. Still, the RPD is confident that the former naval site has no effect on 900 Innes. No radioactive chemicals were found, according to RPD communications manager, Daniel Montes. But advocates like Angel haven’t forgotten.  “Greenaction and the community for many years regarding the Hunters Point shipyard Superfund site have called for independent community oversight of all testing and cleanup activities, and that’s fallen on deaf ears,” says Bradley. “Greenaction believes that there needs to be independent retesting of India Basin and the whole shoreline in Bayview, because we do not trust for good reason.” Angel is not just concerned by what might be in the ground at 900 Innes, but also what might be in the air. South of the new park, at 700 Innes, is a planned residential and commercial complex by BUILD LLC, a private developer that agreed to give about six acres of land to the RPD. Originally planned alongside the 900 Innes property, the RPD issued a Draft Environmental Impact Report (EIR) in 2017 that combined the projected effects of both sites. Still the latest available EIR, it concluded that the joint project “would generate emissions that could expose sensitive receptors to substantial pollutant concentrations significant and unavoidable with mitigation.” Bayview-Hunters Point sees about 97 more annual cases of asthma-related emergency room visits and three more heart attack-related visits per ten thousand people than greater San Francisco. The community is among four neighborhoods in the city with the highest rate of preventable hospitalizations related to air pollution, according to a San Francisco Public Utility Commission 2017 study.  While 700 Innes has been delayed, Angel says once construction begins, the area “won’t be a safe place for some people.” “I can’t comment on the 700 Innes impacts for air quality and what that development would do,” says Froehlich. But noted that with construction complete, now and going forward, 900 Innes park will have a very small impact on air quality. The neighboring 700 Innes site (Photo by Jillian Magtoto) As the RPD moves India Basin past its history of shipping pollution into one of public recreation, a new era of boating emerges. The park opening commenced the arrival of Rocking the Boat—a nonprofit that provides nature and boat education for youth from Hunts Point, New York, with origins similar not just in name. Based in an underserved community in the Bronx, home to aging treatment plants and heavy transportation emissions, the nonprofit was offered an opportunity from the RPD to continue their work at the shop building near the floating docks at 900 Innes, fixing boats and offering rides on the water every Sunday. In March 2025, they will recruit 16 eighth graders from the community to build a 14-foot whitehall from scratch, a type of rowboat that hauled people and small goods in both New York City and San Francisco into the 19th century. Their work will  just involve wood and a little bit of glue,” says Adam Green, who founded Rocking the Boat in 2001. “My hope is that the RPD uses shavings and sawdust we collect for mulch.” The park is newly landscaped with upland sage and native vegetation that run along concrete paths. Mulch and wood chips cover the areas in between. Rocking the Boat employees working at the shop building; Whitehall boats docked at the new floating piers (Photos by Jillian Magtoto) Watkins will work at the park he once thought would never be possible. He will be working at the same Shipwright’s Cottage he saw through the fence not long ago, now a museum, to welcome visitors when they first walk in.  “I think they brought me on to be a connector between the community and the project,” says Watkins. “Having people that really care about this park will help maintain it for years to come.” Darryl Watkins at 900 Innes Ave, just next to Shipwright’s Cottage (Photo by Jillian Magtoto)

After almost 150 years, a piece of San Francisco’s last remaining natural shoreline in Bayview-Hunters Point is now accessible to the public. First, it had to be cleaned up. The post A hazardous waste site becomes ‘San Francisco’s Next Great Park’ appeared first on Bay Nature.

Since he moved to Bayview at five years old, Darryl Watkins wondered why a neglected lot, called 900 Innes, was closed off. He often played basketball at India Basin Shoreline Park next to the yard sloping into the Bay, and peeked through the fence to find dirt, trash, neglected buildings, and a dilapidated cottage that housed shipbuilders over a century ago. It was in such disrepair that Watkins never imagined it could be a park. The parks he liked had clean bathrooms, trees, and nature—things found outside of his community.

Over $200 million and four years of remediation and construction later, the fences enclosing the yard finally opened on October 19. It’s the first time residents will be able to step foot on the completely transformed property, with two new piers, a floating dock, a food pavilion, and access to some of San Francisco’s last remaining natural shoreline. The 900 Innes opening marks the completion of the second phase of a three-part plan that combines the existing India Basin Shoreline Park and 900 Innes property into one 10-acre waterfront park, while closing a major gap on the 13-mile San Francisco Blue Greenway-Bay Trail. 

The 900 Innes Waterfront Park unveiling on October 19; section of the San Francisco Blue Greenway-Bay Trail; Mayor London Breed cutting the ribbon on opening day (Photos by Jillian Magtoto)

The San Francisco Recreation and Parks Department (RPD)  is calling it “San Francisco’s Next Great Park” that will bring the city’s southern waterfront up to par with iconic public spaces such as Crissy Field, Washington Square Park, and Golden Gate Park.

Beyond the flashy claims, the RPD wants the park to benefit local residents long burdened by a history of industrial pollution. “It’s southeast communities where the city has put all of its crap. We put our water treatment plants, we put our power plants, we put everything that no one else wanted in the city,” says David Froehlich, the RPD project manager of remediation for all three India Basin Park projects. “Whether we built a park here or not, we always promise the community that we would leave this site cleaner than it was when we purchased it.” Some Bayview-Hunters Point locals aren’t convinced RPD has done enough, while others are hopeful the park was indeed adequately remediated.

“It’s been a long time coming,” says Jill Fox, who has lived across the street from 900 Innes Ave for over 30 years. “Our fingers are crossed that it will be a good thing for our community.”


The old shipyard at 900 Innes Ave along San Francisco’s India Basin has long worn the past of industrial boating. The blacksmith shop, boatyard office, and tool shed had partially or almost completely collapsed. Old overhead power lines sparked and caught on fire, according to residents. The ground was blanketed with concrete, brick, glass, and wood fragments that thickened up to forty feet down into the water. It was sold to private businesses in 1991 and passed between different owners for decades, serving various roles as a homeless encampment, illegal drug lab, and construction storage yard. It remained undeveloped and inaccessible to the public until community members advocated for the property to be acquired by the RPD in 2014.

“I always thought 900 Innes would be much better as a respite, a place to be with nature,” says Fox, who participated in the effort towards the lot’s public acquisition. “RPD had the funds and owned properties on either side of it.”

A rendition of the India Basin Waterfront Park Project, the combination of the renovated India Basin Shoreline Park and the neighboring 900 Innes property. The result will be a 10-acre waterfront park, planned to be completed in 2026 (left); map of India Basin (right) (Photos courtesy of India Basin Waterfront Park)

But the site was far from being a natural respite. Soil samples in 2017 revealed elevated levels of PCBs, petroleum hydrocarbons, and heavy metals from painting, waterproofing, and other boating activities, especially concentrated near boat launch sites. Before it could ever become a place for people, a significant cleanup was in order.

“There were a lot of regulatory agencies that were involved,” says Froehlich. “And permits that I wasn’t typically used to.”

Local, state, and federal agencies oversaw the remediation, including the Army Corps of Engineers, the Environmental Protection Agency, California State Water Board, and the San Francisco Water Quality Control Board. They monitored the site as the RPD installed a temporary water barrier to push back the Bay water, like the rim of a massive inflatable pool, to remove layers of concrete and up to two feet of contaminated soil. In 2022, the last year of remediation, they discovered the contaminants spread deeper. They found lead, mercury, and PCBs up to seven feet below ground, according to the Remedial Action Plan.

“We excavated down to a completely clean site and put clean cover on top of that, using soil from a virgin quarry in the East Bay,” says Froehlich. “So, in theory, it’s a completely clean site.”

Water barrier installed during remediation
Water barrier installed during remediation (Photo by San Francisco Recreation and Parks Department)

Still, some community advocates remain unsure.

“We support a new and improved park in theory, but as long as it can be clean and safe,” says Bradley Angel, the director of Greenaction, a San Francisco-based health and environmental justice nonprofit. The city’s only Superfund site is just a third of a mile southeast from 900 Innes, a former naval laboratory that leaked petroleum, pesticides, and radioactive waste into the ground for 40 years. This contamination remained unknown until 2012, when the Navy discovered that the federally-contracted consulting firm Tetra Tech EC falsified their data. While the Navy allowed Tetra Tech to clear itself in an internal investigation, whistleblowers in 2017 alleged that the Navy mishandled cleanup efforts and covered up the extent of the pollution, in a lawsuit led by Greenaction against the EPA and Navy.

Still, the RPD is confident that the former naval site has no effect on 900 Innes. No radioactive chemicals were found, according to RPD communications manager, Daniel Montes. But advocates like Angel haven’t forgotten. 

“Greenaction and the community for many years regarding the Hunters Point shipyard Superfund site have called for independent community oversight of all testing and cleanup activities, and that’s fallen on deaf ears,” says Bradley. “Greenaction believes that there needs to be independent retesting of India Basin and the whole shoreline in Bayview, because we do not trust for good reason.”

Angel is not just concerned by what might be in the ground at 900 Innes, but also what might be in the air. South of the new park, at 700 Innes, is a planned residential and commercial complex by BUILD LLC, a private developer that agreed to give about six acres of land to the RPD. Originally planned alongside the 900 Innes property, the RPD issued a Draft Environmental Impact Report (EIR) in 2017 that combined the projected effects of both sites. Still the latest available EIR, it concluded that the joint project “would generate emissions that could expose sensitive receptors to substantial pollutant concentrations significant and unavoidable with mitigation.”

Bayview-Hunters Point sees about 97 more annual cases of asthma-related emergency room visits and three more heart attack-related visits per ten thousand people than greater San Francisco. The community is among four neighborhoods in the city with the highest rate of preventable hospitalizations related to air pollution, according to a San Francisco Public Utility Commission 2017 study. 

While 700 Innes has been delayed, Angel says once construction begins, the area “won’t be a safe place for some people.”

“I can’t comment on the 700 Innes impacts for air quality and what that development would do,” says Froehlich. But noted that with construction complete, now and going forward, 900 Innes park will have a very small impact on air quality.

The neighboring 700 Innes site (Photo by Jillian Magtoto)

As the RPD moves India Basin past its history of shipping pollution into one of public recreation, a new era of boating emerges. The park opening commenced the arrival of Rocking the Boat—a nonprofit that provides nature and boat education for youth from Hunts Point, New York, with origins similar not just in name. Based in an underserved community in the Bronx, home to aging treatment plants and heavy transportation emissions, the nonprofit was offered an opportunity from the RPD to continue their work at the shop building near the floating docks at 900 Innes, fixing boats and offering rides on the water every Sunday. In March 2025, they will recruit 16 eighth graders from the community to build a 14-foot whitehall from scratch, a type of rowboat that hauled people and small goods in both New York City and San Francisco into the 19th century.

Their work will  just involve wood and a little bit of glue,” says Adam Green, who founded Rocking the Boat in 2001. “My hope is that the RPD uses shavings and sawdust we collect for mulch.” The park is newly landscaped with upland sage and native vegetation that run along concrete paths. Mulch and wood chips cover the areas in between.

Rocking the Boat employees working at the shop building; Whitehall boats docked at the new floating piers (Photos by Jillian Magtoto)

Watkins will work at the park he once thought would never be possible. He will be working at the same Shipwright’s Cottage he saw through the fence not long ago, now a museum, to welcome visitors when they first walk in. 

“I think they brought me on to be a connector between the community and the project,” says Watkins. “Having people that really care about this park will help maintain it for years to come.”

Darryl Watkins at 900 Innes Ave, just next to Shipwright’s Cottage
Darryl Watkins at 900 Innes Ave, just next to Shipwright’s Cottage (Photo by Jillian Magtoto)

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London judge rules BHP Group liable for Brazil’s 2015 Samarco dam collapse

About 600,000 people seeking compensation a decade on from disaster that killed 19 and devastated villagesA London judge has ruled that the global mining company BHP Group is liable in Brazil’s worst environmental disaster, when a dam collapse 10 years ago unleashed tons of toxic waste into a major river, killing 19 people and devastating villages downstream.Mrs Justice O’Farrell said at the high court that Australia-based BHP was responsible despite not owning the dam at the time. Continue reading...

A London judge has ruled that global mining company BHP Group is liable in Brazil’s worst environmental disaster, when a dam collapse 10 years ago unleashed tons of toxic waste into a major river, killing 19 people and devastating villages downstream.Mrs Justice O’Farrell said at the high court that Australia-based BHP was responsible despite not owning the dam at the time.Anglo-Australian BHP owns 50% of Samarco, the Brazilian company that operates the iron ore mine where the tailings dam ruptured on 5 November 2015, sending as much as 40m cubic metres of mining into the Doce River in south-eastern Brazil.Sludge from the burst dam destroyed the once-bustling village of Bento Rodrigues in Minas Gerais state and badly damaged other towns.The disaster also killed 14 tonnes of freshwater fish and damaged 370 miles (600 miles) of the Doce River, according to a study by the University of Ulster in the UK. The river, which the Krenak Indigenous people revere as a deity, has yet to recover.About 600,000 Brazilians are seeking £36bn ($47bn) in compensation, although the ruling only addressed liability. A second phase of the trial will determine damages.The case was filed in Britain because one of BHP’s two main legal entities was based in London at the time.The trial began in October 2024, just days before Brazil’s federal government reached a multibillion-dollar settlement with the mining companies.Under the agreement, Samarco, which is also half owned by Brazilian mining company Vale, agreed to pay 132 billion reais ($23bn) over 20 years. The payments were meant to compensate for human, environmental and infrastructure damage.BHP had said the UK legal action was unnecessary because it duplicated matters covered by legal proceedings in Brazil.

MIT senior turns waste from the fishing industry into biodegradable plastic

Jacqueline Prawira’s innovation, featured on CBS’s “The Visioneers,” tackles one of the world’s most pressing environmental challenges.

Sometimes the answers to seemingly intractable environmental problems are found in nature itself. Take the growing challenge of plastic waste. Jacqueline Prawira, an MIT senior in the Department of Materials Science and Engineering (DMSE), has developed biodegradable, plastic-like materials from fish offal, as featured in a recent segment on the CBS show “The Visioneers with Zay Harding.” “We basically made plastics to be too good at their job. That also means the environment doesn’t know what to do with this, because they simply won’t degrade,” Prawira told Harding. “And now we’re literally drowning in plastic. By 2050, plastics are expected to outweigh fish in the ocean.” “The Visioneers” regularly highlights environmental innovators. The episode featuring Prawira premiered during a special screening at Climate Week NYC on Sept. 24.Her inspiration came from the Asian fish market her family visits. Once the fish they buy are butchered, the scales are typically discarded. “But I also started noticing they’re actually fairly strong. They’re thin, somewhat flexible, and pretty lightweight, too, for their strength,” Prawira says. “And that got me thinking: Well, what other material has these properties? Plastics.” She transformed this waste product into a transparent, thin-film material that can be used for disposable products such as grocery bags, packaging, and utensils. Both her fish-scale material and a composite she developed don’t just mimic plastic — they address one of its biggest flaws. “If you put them in composting environments, [they] will degrade on their own naturally without needing much, if any, external help,” Prawira says. This isn’t Prawira’s first environmental innovation. Working in DMSE Professor Yet-Ming Chiang’s lab, she helped develop a low-carbon process for making cement — the world’s most widely used construction material, and a major emitter of carbon dioxide. The process, called silicate subtraction, enables compounds to form at lower temperatures, cutting fossil fuel use. Prawira and her co-inventors in the Chiang lab are also using the method to extract valuable lithium with zero waste. The process is patented and is being commercialized through the startup Rock Zero. For her achievements, Prawira recently received the Barry Goldwater Scholarship, awarded to undergraduates pursuing careers in science, mathematics, or engineering. In her “Visioneers” interview, she shared her hope for more sustainable ways of living. “I’m hoping that we can have daily lives that can be more in sync with the environment,” Prawira said. “So you don’t always have to choose between the convenience of daily life and having to help protect the environment.”

What should countries do with their nuclear waste?

A new study by MIT researchers analyzes different nuclear waste management strategies, with a focus on the radionuclide iodine-129.

One of the highest-risk components of nuclear waste is iodine-129 (I-129), which stays radioactive for millions of years and accumulates in human thyroids when ingested. In the U.S., nuclear waste containing I-129 is scheduled to be disposed of in deep underground repositories, which scientists say will sufficiently isolate it.Meanwhile, across the globe, France routinely releases low-level radioactive effluents containing iodine-129 and other radionuclides into the ocean. France recycles its spent nuclear fuel, and the reprocessing plant discharges about 153 kilograms of iodine-129 each year, under the French regulatory limit.Is dilution a good solution? What’s the best way to handle spent nuclear fuel? A new study by MIT researchers and their collaborators at national laboratories quantifies I-129 release under three different scenarios: the U.S. approach of disposing spent fuel directly in deep underground repositories, the French approach of dilution and release, and an approach that uses filters to capture I-129 and disposes of them in shallow underground waste repositories.The researchers found France’s current practice of reprocessing releases about 90 percent of the waste’s I-129 into the biosphere. They found low levels of I-129 in ocean water around France and the U.K.’s former reprocessing sites, including the English Channel and North Sea. Although the low level of I-129 in the water in Europe is not considered to pose health risks, the U.S. approach of deep underground disposal leads to far less I-129 being released, the researchers found.The researchers also investigated the effect of environmental regulations and technologies related to I-129 management, to illuminate the tradeoffs associated with different approaches around the world.“Putting these pieces together to provide a comprehensive view of Iodine-129 is important,” says MIT Assistant Professor Haruko Wainwright, a first author on the paper who holds a joint appointment in the departments of Nuclear Science and Engineering and of Civil and Environmental Engineering. “There are scientists that spend their lives trying to clean up iodine-129 at contaminated sites. These scientists are sometimes shocked to learn some countries are releasing so much iodine-129. This work also provides a life-cycle perspective. We’re not just looking at final disposal and solid waste, but also when and where release is happening. It puts all the pieces together.”MIT graduate student Kate Whiteaker SM ’24 led many of the analyses with Wainwright. Their co-authors are Hansell Gonzalez-Raymat, Miles Denham, Ian Pegg, Daniel Kaplan, Nikolla Qafoku, David Wilson, Shelly Wilson, and Carol Eddy-Dilek. The study appears today in Nature Sustainability.Managing wasteIodine-129 is often a key focus for scientists and engineers as they conduct safety assessments of nuclear waste disposal sites around the world. It has a half-life of 15.7 million years, high environmental mobility, and could potentially cause cancers if ingested. The U.S. sets a strict limit on how much I-129 can be released and how much I-129 can be in drinking water — 5.66 nanograms per liter, the lowest such level of any radionuclides.“Iodine-129 is very mobile, so it is usually the highest-dose contributor in safety assessments,” Wainwright says.For the study, the researchers calculated the release of I-129 across three different waste management strategies by combining data from current and former reprocessing sites as well as repository assessment models and simulations.The authors defined the environmental impact as the release of I-129 into the biosphere that humans could be exposed to, as well as its concentrations in surface water. They measured I-129 release per the total electrical energy generated by a 1-gigawatt power plant over one year, denoted as kg/GWe.y.Under the U.S. approach of deep underground disposal with barrier systems, assuming the barrier canisters fail at 1,000 years (a conservative estimate), the researchers found 2.14 x 10–8 kg/GWe.y of I-129 would be released between 1,000 and 1 million years from today.They estimate that 4.51 kg/GWe.y of I-129, or 91 percent of the total, would be released into the biosphere in the scenario where fuel is reprocessed and the effluents are diluted and released. About 3.3 percent of I-129 is captured by gas filters, which are then disposed of in shallow subsurfaces as low-level radioactive waste. A further 5.2 percent remains in the waste stream of the reprocessing plant, which is then disposed of as high-level radioactive waste.If the waste is recycled with gas filters to directly capture I-129, 0.05 kg/GWe.y of the I-129 is released, while 94 percent is disposed of in the low-level disposal sites. For shallow disposal, some kind of human disruption and intrusion is assumed to occur after government or institutional control expires (typically 100-1,000 years). That results in a potential release of the disposed amount to the environment after the control period.Overall, the current practice of recycling spent nuclear fuel releases the majority of I-129 into the environment today, while the direct disposal of spent fuel releases around 1/100,000,000 that amount over 1 million years. When the gas filters are used to capture I-129, the majority of I-129 goes to shallow underground repositories, which could be accidentally released through human intrusion down the line.The researchers also quantified the concentration of I-129 in different surface waters near current and former fuel reprocessing facilities, including the English Channel and the North Sea near reprocessing plants in France and U.K. They also analyzed the U.S. Columbia River downstream of a site in Washington state where material for nuclear weapons was produced during the Cold War, and they studied a similar site in South Carolina. The researchers found far higher concentrations of I-129 within the South Carolina site, where the low-level radioactive effluents were released far from major rivers and hence resulted in less dilution in the environment.“We wanted to quantify the environmental factors and the impact of dilution, which in this case affected concentrations more than discharge amounts,” Wainwright says. “Someone might take our results to say dilution still works: It’s reducing the contaminant concentration and spreading it over a large area. On the other hand, in the U.S., imperfect disposal has led to locally higher surface water concentrations. This provides a cautionary tale that disposal could concentrate contaminants, and should be carefully designed to protect local communities.”Fuel cycles and policyWainwright doesn’t want her findings to dissuade countries from recycling nuclear fuel. She says countries like Japan plan to use increased filtration to capture I-129 when they reprocess spent fuel. Filters with I-129 can be disposed of as low-level waste under U.S. regulations.“Since I-129 is an internal carcinogen without strong penetrating radiation, shallow underground disposal would be appropriate in line with other hazardous waste,” Wainwright says. “The history of environmental protection since the 1960s is shifting from waste dumping and release to isolation. But there are still industries that release waste into the air and water. We have seen that they often end up causing issues in our daily life — such as CO2, mercury, PFAS and others — especially when there are many sources or when bioaccumulation happens. The nuclear community has been leading in waste isolation strategies and technologies since the 1950s. These efforts should be further enhanced and accelerated. But at the same time, if someone does not choose nuclear energy because of waste issues, it would encourage other industries with much lower environmental standards.”The work was supported by MIT’s Climate Fast Forward Faculty Fund and the U.S. Department of Energy.

Under Trump, E.P.A. Explored if Abortion Pills Could Be Detected in Wastewater

Scientists at the Environmental Protection Agency found that they could develop methods to identify traces of the medication if necessary — a practice long sought by the anti-abortion movement.

Senior officials at the Environmental Protection Agency directed a team of scientists over the summer to assess whether the government could develop methods for detecting traces of abortion pills in wastewater — a practice sought by some anti-abortion activists seeking to restrict the medication now used in over 50 percent of abortions.The highly unusual request appears to have originated from a letter sent from 25 Republican members of Congress to Lee Zeldin, the E.P.A. administrator, asking the agency to investigate how the abortion drug mifepristone might be contaminating the water supply.“Are there existing E.P.A.-approved methods for detecting mifepristone and its active metabolites in water supplies?” the lawmakers asked at the end of the public letter, sent on June 18, an effort led by Senator James Lankford and Representative Josh Brecheen, both of Oklahoma. “If not, what resources are needed to develop these testing methods?”Scientists who specialize in chemical detection told the senior officials that there are currently no E.P.A.-approved methods for identifying mifepristone in wastewater — but that new methods could be developed, according to two people familiar with the events, who spoke on the condition of anonymity to discuss sensitive information.Abortion pills have emerged as a major focus for the anti-abortion movement since the fall of Roe v. Wade, as growing numbers of women in states with abortion bans have turned to websites and underground networks that send the pills through the mail, allowing them to circumvent the laws.The widespread availability of abortion pills — which women usually take at home in the first 10 weeks of pregnancy — has inspired many anti-abortion activists to push for new approaches to curtail their use. That has included a campaign by one prominent group to raise awareness about environmental harms they say are caused when the medication and fetal remains enter the sewage system.Subscribe to The Times to read as many articles as you like.

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