All About Groundwater- Hanford Part 1
https://www.hanfordchallenge.org/inheriting-hanford 9 Aug 22, [good diagrams]
Part 1
The Hanford Nuclear Site is one of the most complex and arduous cleanup efforts in the history of the United States. Hundreds of billions of gallons of radioactive and chemical waste were dumped into the ground on site. Pacific Northwest National Laboratory (PNNL) issued a report in September 2021, Adaptive Site Management Strategies for the Hanford Central Plateau Groundwater, that outlines an innovative strategy to tackle the challenge of groundwater cleanup. The report suggests adopting a new approach—Adaptive Site Management—to address groundwater cleanup in Hanford’s Central Plateau.
Adaptive Site Management is centered on thorough site planning and a robust understanding of site conditions and uncertainties. Large and complex hazardous waste sites often implement this approach. Adaptive Site Management would create a groundwater cleanup framework of planning, implementation, and assessment to nimbly adapt to new information and changing site conditions at Hanford. The goal would be to develop effective cleanup strategies that achieve the required outcomes while staying on schedule and budget.
The Adaptive Site Management approach attempts to reduce uncertainty by comprehensively characterizing the contaminants in the soil and groundwater. Characterization identifies the physical and chemical properties of the waste and the extent of contaminants in the vadose zone and groundwater. Characterization also identifies the geological makeup of the site, which can influence the movement of contaminants. The characterization process gathers information that then informs waste treatment and cleanup strategies.
An Adaptive Site Management approach for Hanford’s Central Plateau would include:
- Establishing site objectives or end goals that are consistent with the overall Hanford Site goals and that support the development of a long-term management approach;
- Developing interim objectives that provide step-by-step progress toward the overall site cleanup strategy; and
- Identifying key cleanup actions to reduce uncertainty, address site complexities, and analyze data gaps.
The report proposes various long-term site and interim objectives for the Central Plateau to provide examples for implementing the Adaptive Site Management approach at Hanford. These objectives are based on the primary goal of Hanford cleanup operations—protecting the Columbia River.
The objectives must also be consistent with the United States Department of Energy’s (USDOE) decision about future land use when cleanup finishes. For example, USDOE decided that the Central Plateau is designated exclusively for industrial use, meaning manufacturing, processing, or storing materials. The decision to have the Central Plateau remain solely for industrial use means that the cleanup strategy doesn’t have to be as protective as for other areas of the Hanford Site, such as the River Corridor. USDOE can leave some contamination in place because it’s assuming that the land won’t be openly accessible to the public. However, that is a big assumption considering that some radionuclides remain dangerous for hundreds of thousands of years. It’s impossible to know what the world will look like that far into the future, but USDOE probably won’t be around to prevent future generations from staying out of the Central Plateau.
In conclusion, the report makes the case that the Adaptive Site Management approach is an appropriate tool for a large and complex site, such as Hanford. Since many of the cleanup activities in the Central Plateau are still early in the decision process and not set in stone, the report states that now is an appropriate time to implement the Adaptive Site Management approach.
In addition to outlining the Adaptive Site Management approach, the report dives into the history of Hanford’s soil and groundwater contamination, current cleanup strategies, and the various challenges to cleaning up the soil and groundwater. Read on to Part 2 to learn more about soil and groundwater contamination at Hanford.
This material is funded through a Public Participation Grant from the Washington State Department of Ecology. The content was reviewed for grant consistency, but is not necessarily endorsed by the agency.
Uranium Ghost Town in the Making
, Time and again, mining company Homestake and government agencies promised to clean up waste from decades of uranium processing. It didn’t happen.
Reader supported News, Mark Olalde and Maya Miller/ProPublica, 25 Aug 22
he “death map” tells the story of decades of sickness in the small northwest New Mexico communities of Murray Acres and Broadview Acres. Turquoise arrows point to homes where residents had thyroid disease, dark blue arrows mark cases of breast cancer, and yellow arrows mean cancer claimed a life.
Neighbors built the map a decade ago after watching relatives and friends fall ill and die. Dominating the top right corner of the map, less than half a mile from the cluster of colorful arrows, sits what residents believe is the cause of their sickness: 22.2 million tons of uranium waste left over from milling ore to supply power plants and nuclear bombs.
“We were sacrificed a long time ago,” said Candace Head-Dylla, who created the death map with her mother after Head-Dylla had her thyroid removed and her mother developed breast cancer. Research has linked both types of illnesses to uranium exposure.
Beginning in 1958, a uranium mill owned by Homestake Mining Company of California processed and refined ore mined nearby. The waste it left behind leaked uranium and selenium into groundwater and released the cancer-causing gas radon into the air. State and federal regulators knew the mill was polluting groundwater almost immediately after it started operating, but years passed before they informed residents and demanded fixes.
The contamination continued to spread even after the mill closed in 1990.
The failures at Homestake are emblematic of the toxic legacy of the American uranium industry, one that has been well-documented from its boom during the Cold War until falling uranium prices and concerns over the dangers of nuclear power decimated the industry in the 1980s. Uranium mining and milling left a trail of contamination and suffering, from miners who died of lung cancer while the federal government kept the risks secret to the largest radioactive spill in the country’s history.
But for four decades, the management of more than 250 million tons of radioactive uranium mill waste has been largely overlooked, continuing to pose a public health threat.
ProPublica found that regulators have failed to hold companies to account when they missed cleanup targets and accepted incorrect forecasts that pollution wouldn’t spread. The federal government will eventually assume responsibility for the more than 50 defunct mills that generated this waste.
At Homestake, which was among the largest mills, the company is bulldozing a community in order to walk away. Interviews with dozens of residents, along with radon testing and thousands of pages of company and government records, reveal a community sacrificed to build the nation’s nuclear arsenal and atomic energy industry.
Time and again, Homestake and government agencies promised to clean up the area. Time and again, they missed their deadlines while further spreading pollution in the communities. In the 1980s, Homestake promised residents groundwater would be cleaned within a decade, locals told the Environmental Protection Agency and ProPublica. After missing that target, the company told regulators it would complete the job around 2006, then by 2013.
In 2014, an EPA report confirmed the site posed an unacceptable cancer risk and identified radon as the greatest threat to residents’ health. Still, the cleanup target date continued shifting, to 2017, then 2022.
Rather than finish the cleanup, Homestake’s current owner, the Toronto-based mining giant Barrick Gold, is now preparing to ask the Nuclear Regulatory Commission, the independent federal agency that oversees the cleanup of uranium mills, for permission to demolish its groundwater treatment systems and hand the site and remaining waste over to the U.S. Department of Energy to monitor and maintain forever.
Before it can transfer the site to the Department of Energy, Homestake must prove that the contamination, which exceeds federal safety levels, won’t pose a risk to nearby residents or taint the drinking water of communities downstream.
Part of Homestake’s strategy: buy out nearby residents and demolish their homes. Local real estate agents and residents say the company’s offers do not account for the region’s skyrocketing housing costs, pushing some who accept them back into debt in order to buy a new home. Those who do sell are required to sign agreements to refrain from disparaging Homestake and absolve the company of liability, even though illnesses caused by exposure to radioactive waste can take decades to manifest.
Property records reveal the company had, by the end of 2021, purchased 574 parcels covering 14,425 acres around the mill site. This April, Homestake staff indicated they had 123 properties left to buy. One resident said the area was quickly becoming a “ghost town.”
Even after the community is gone, more than 15,000 people who live nearby, many of them Indigenous, will continue to rely on water threatened by Homestake’s pollution.
The company said it has produced models showing that its waste won’t imperil the region’s water if it walks away. The NRC says it will only grant a groundwater cleanup exemption if that’s the case.
But while Homestake and other mining companies have polluted the region, it’s been the NRC and various other agencies that stood by as it happened. ProPublica found the NRC has issued exemptions from groundwater cleanup standards to uranium mills around the country, only to see pollution continue to spread. This has occurred as climate change hammers the West, making water ever scarcer.
“Groundwater moves. Groundwater doesn’t care about regulations,” said Earle Dixon, a hydrogeologist who reviewed the government’s oversight of uranium cleanup and pollution around Homestake for the New Mexico Environment Department and the EPA. Dixon and other researchers predict contamination at Homestake will likely spread if cleanup ends.
The company has denied that its waste caused residents’ illnesses, and judges ruled in Homestake’s favor in a case residents filed in 2004 alleging the site caused cancer. Doctors testified that the pollution was a substantial factor contributing to residents’ cancers, but tying particular cases to a single source requires communitywide blood, urine and other testing, which hadn’t been done…………………………………………………..
ProPublica found that, as with most uranium mills in the U.S., Homestake built no liner between the earth and the sandy waste left over from milling, known as tailings. This happened even though an engineer with the New Mexico Department of Health warned the company only weeks after the mill opened that it needed to at least compact the soil underneath its waste to prevent leaks. Without a liner, pollution seeped into aquifers that supplied drinking water. In 1961, the same engineer wrote that groundwater samples showed radium 226, a radioactive and cancer-causing element, at levels as much as 31 times higher than naturally occur in the area, indicating “definite pollution of the shallow ground water table by the uranium mill tailings’ ponds.”
A federal report a year later identified even higher levels of radium 226 in groundwater…………………………..
More than 500 abandoned uranium mines pockmark the Navajo Nation, and Billiman’s father, a Navajo Code Talker in World War II, died of stomach cancer, an illness associated with downwind exposure to nuclear tests. Boomer has written the story of uranium into lyrics, singing about the harm caused by the waste that was left behind…………………………………………….more https://www.rsn.org/001/a-uranium-ghost-town-in-the-making.html
S Korea signs $2.25 billion deal with Russia nuclear company
By KIM TONG-HYUNG, August 26, 2022
SEOUL, South Korea (AP) — South Korea has signed a 3 trillion won ($2.25 billion) contract with a Russian state-run nuclear energy company to provide components and construct turbine buildings for Egypt’s first nuclear power plant, officials said Thursday.
The South Koreans hailed the deal as a triumph for their nuclear power industry, although it made for awkward optics as their American allies push an economic pressure campaign to isolate Russia over its war on Ukraine.
South Korean officials said the United States was consulted in advance about the deal and that the technologies being supplied by Seoul for the project would not clash with international sanctions against Russia.
According to South Korea’s presidential office and trade ministry, the state-run Korea Hydro and Nuclear Power was subcontracted by Russia’s Atomstroyexport to provide certain materials and equipment and construct turbine buildings and other structures at the plant being built in Dabaa. The Mediterranean coastal town is about 130 kilometers (80 miles) northwest of Cairo.
Atomstroyexport, also called ASE, is a subsidiary of Rosatom, a state-owned Russian nuclear conglomerate. The company has a contract with Egypt to deliver four 1,200 megawatt reactors through 2030. Korea Hydro and Nuclear Power’s part of project is from 2023 to 2029…………….. https://apnews.com/article/russia-ukraine-middle-east-africa-349bf2b3eb2551bdea5ec886855dea92
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