Study helps explain why uranium persists in groundwater at former mining sites https://www.sciencedaily.com/releases/2017/02/170202163234.htm
February 2, 2017
- SLAC National Accelerator Laboratory
- A recent study helps describe how uranium cycles through the environment at former uranium mining sites and why it can be difficult to remove.
Decades after a uranium mine is shuttered, the radioactive element can still persist in groundwater at the site, despite cleanup efforts.
A recent study led by scientists at the Department of Energy’s SLAC National Accelerator Laboratory helps describe how the contaminant cycles through the environment at former uranium mining sites and why it can be difficult to remove. Contrary to assumptions that have been used for modeling uranium behavior, researchers found the contaminant binds to organic matter in sediments. The findings provide more accurate information for monitoring and remediation at the sites.
The results were published in the Proceedings of the National Academy of Sciences.
In 2014, researchers at SLAC’s Stanford Synchrotron Radiation Lightsource (SSRL) began collaborating with the DOE Office of Legacy Management, which handles contaminated sites associated with the legacy of DOE’s nuclear energy and weapons production activities. Through projects associated with the Uranium Mill Tailings Radiation Control Act, the DOE remediated 22 sites in Colorado, Wyoming and New Mexico where uranium had been extracted and processed during the 1940s to 1970s.
Uranium was removed from the sites as part of the cleanup process, and the former mines and waste piles were capped more than two decades ago. Remaining uranium deep in the subsurface under the capped waste piles was expected to leave these sites due to natural groundwater flow. However, uranium has persisted at elevated levels in nearby groundwater much longer than predicted by scientific modeling………
- “For the most part, uranium contamination has only been looked at in very simple model systems in laboratories,” Bone says. “One big advancement is that we are now looking at uranium in its native environmental form in sediments. These dynamics are complicated, and this research will allow us to make field-relevant modeling predictions.”In an earlier study, the SLAC team discovered that uranium accumulates in the low-oxygen sediments near one of the waste sites in the upper Colorado River basin. These deposits contain high levels of organic matter — such as plant debris and bacterial communities.During this latest study, the researchers found the dominant form of uranium in the sediments, known as tetravalent uranium, binds to organic matter and clays in the sediments. This makes it more likely to persist at the sites. The result conflicted with current models used to predict movement and longevity of uranium in sediments, which assumed that it formed an insoluble mineral called uraninite.
Different chemical forms of the element vary widely in how mobile they are — how readily they move around — in water, says Sharon Bone, lead author on the paper and a postdoctoral researcher at SSRL, a DOE Office of Science User Facility.
Since the uranium is bound to organic matter in sediments, it is immobile under certain conditions. Tetravalent uranium may become mobile when the water table drops and oxygen from the air enters spaces in the sediment that were formerly filled with water, particularly if the uranium is bound to organic matter in sediments rather than being stored in insoluble minerals.
“Either you want the uranium to be soluble and completely flushed out by the groundwater, or you just want the uranium to remain in the sediments and stay out of the groundwater,” Bone says. “But under fluctuating seasonal conditions, neither happens completely.”
This cycling in the aquifer may result in the persistent plumes of uranium contamination found in groundwater, something that wasn’t captured by earlier modeling efforts.
USA’s Nuclear Regulatory Commission allows radioactive waste to be dumped Under Miami’s Drinking Water Aquifer,
FPL Wins Battle to Store Radioactive Waste Under Miami’s Drinking Water Aquifer, Miami New Times, BY JERRY IANNELLI JANUARY 16, 2017 Environmental activists have started a petition urging Florida lawmakers to prevent FPL from storing waste underground. South Florida sits atop two gigantic underground stores of water: the Biscayne and Floridan Aquifers. Miamians get most of their drinking water from the upper Biscayne Aquifer, while the government has used the lower portion of the Floridian to dump waste and untreated sewage — despite the fact that multiple studies have warned that waste could one day seep into the drinking water.
According to NRC documents, CASE’s petition was dismissed for being filed “inexcusably late” in FPL’s application process.
“This was thrown out on procedural grounds,” says CASE’s president, Barry J. White. “The science is still there.”
CASE had filed a petition with the U.S. Nuclear Regulatory Commission, but the NRC on Friday threw out CASE’s complaint, saying the environmental group had filed too late in FPL’s approval process.
The fight stems from the energy company’s plan to build two nuclear reactors at the controversial Turkey Point Nuclear Generating Station south of Miami by roughly 2030. The towers might not be operational for a decade or two, but that doesn’t mean the public should stop paying attention to them. FPL is submitting numerous proposals about the project to the government.
As part of that package, FPL told the U.S. Nuclear Regulatory Commission that it plans to store contaminated water used to clean the reactors, as well as radioactive waste (“radwaste”) in the Boulder Zone. In October, the NRC issued a report, stating FPL’s plan would pose “no environmental impacts” to the South Florida environment.
Roughly a month later, on November 28, CASE filed a legal petition demanding that the NRC hold a hearing on FPL’s radioactive waste plan. CASE alleges the government failed to address a host of concerns about the power company’s plan.
“Everything will be put into a supposedly ‘hermetically sealed’ Boulder Zone,” White told New Times in December. “But anybody who lives in South Florida knows nothing below us is hermetically sealed.” Environmentalists say the plan could leak carcinogens such as cesium, strontium 90, and tritium right into the drinking-water aquifers…….. http://www.miaminewtimes.com/news/fpl-wins-battle-to-store-radioactive-waste-under-miamis-drinking-water-aquifer-9059210
Federal GOP legislators from Wyoming have said a rule was an unnecessary burden for the uranium industry NBC5 Jan 5, 2017 CHEYENNE, Wyo. —
Federal officials withdrew a requirement for companies to clean up groundwater at uranium mines across the U.S. and will reconsider a rule that congressional Republicans criticized as too harsh on industry.
The plan that the U.S. Environmental Protection Agency put on hold Wednesday involves in-situ mining, in which water containing chemicals is used to dissolve uranium out of underground sandstone deposits. Water laden with uranium, a toxic element used for nuclear power and weapons, is then pumped to the surface. No digging or tunneling takes place.
The metal occurs in the rock naturally but the process contaminates groundwater with uranium in concentrations much higher than natural levels. Mining companies take several measures to prevent tainted water from seeping out of the immediate mining area…….
Along with setting new cleanup standards, the rule would have required companies to monitor their former in-situ mines potentially for decades. The requirement was set for implementation but now will be opened up for a six-month public comment period.
EPA officials didn’t immediately respond to a request for comment Thursday.
Environmentalists and others say uranium-mining companies have yet to show they can fully clean up groundwater at a former in-situ mine. Clean groundwater should not be taken for granted, they say, especially in the arid and increasingly populated U.S. West.
“We are, of course, disappointed that this final rule didn’t make it to a final stage,” said Shannon Anderson with the Powder River Basin Resource Council. “It was designed to address a very real and pressing problem regarding water protection at uranium mines.”
The EPA rule is scheduled for further consideration in President-elect Donald Trump’s administration.
In-situ uranium mining surged on record prices that preceded the 2011 Japanese tsunami and Fukushima nuclear disaster. Prices lately have sunk to decade lows, prompting layoffs. http://www.mynbc5.com/article/woman-who-lost-her-leg-receives-very-generous-gift/8570346
USA’s EPA ( Nuclear Industry Protection Agency) confirms dramatic increase in radiation will be permitted in drinking water
RADICAL DRINKING WATER RADIATION RISE CONFIRMED IN EPA PLAN http://www.peer.org/news/news-releases/radical-drinking-water-radiation-rise-confirmed-in-epa-plan.html EPA Hid Planned Exposure Levels 1,000s of Times Safe Drinking Water Act Limits PEER, Dec 22, 2016 Washington, DC
— In the last days of the Obama Administration, the U.S. Environmental Protection Agency is about to dramatically increase allowable public exposure to radioactivity to levels thousands of times above the maximum limits of the Safe Drinking Water Act, according to documents the agency surrendered in a federal lawsuit brought by Public Employees for Environmental Responsibility (PEER). These radical rollbacks cover the “intermediate period” following a radiation release and could last for up to several years. This plan is in its final stage of approval.
The documents indicate that the plan’s rationale is rooted in public relations, not public health. Following Japan’s Fukushima meltdown in 2011, EPA’s claims that no radioactivity could reach the U.S. at levels of concern were contradicted by its own rainwater measurements showing contamination from Fukushima throughout the U.S. well above Safe Drinking Water Act limits. In reaction, EPA prepared new limits 1000s of times higher than even the Fukushima rainwater because “EPA experienced major difficulties conveying to the public that the detected levels…were not of immediate concern for public health.”
When EPA published for public comment the proposed “Protective Action Guides,” it hid proposed new concentrations for all but four of the 110 radionuclides covered, and refused to reveal how much they were above Safe Drinking Water Act limits. It took a lawsuit to get EPA to release documents showing that –
- The proposed PAGs for two radionuclides (Cobalt-60 and Calcium-45) are more than 10,000 times Safe Drinking Water Act limits. Others are hundreds or thousands of times higher;
- According to EPA’s own internal analysis, some concentrations are high enough to deliver a lifetime permissible dose in a single day. Scores of other radionuclides would be allowed at levels that would produce a lifetime dose in a week or a month;
- The levels proposed by the Obama EPA are higher than what the Bush EPA tried to adopt–also in its final days. That plan was ultimately withdrawn; and
- EPA hid the proposed increases from the public so as to “avoid confusion,” intending to release the higher concentrations only after the proposal was adopted. The documents also reveal that EPA’s radiation division even hid the new concentrations from other divisions of EPA that were critical of the proposal, requiring repeated efforts to get them to even be disclosed internally.
- “To cover its embarrassment after being caught dissembling about Fukushima fallout on American soil, EPA is pursuing a justification for assuming a radioactive fetal position even in cases of ultra-high contamination,” stated PEER Executive Director Jeff Ruch, noting that New York Attorney General Eric Schneiderman has called for the PAGs to be withdrawn on both public health and legal grounds. “The Safe Drinking Water Act is a federal law; it cannot be nullified or neutered by regulatory ‘guidance.’”
Despite claims of transparency, EPA solicited public comment on its plan even as it hid the bulk of the plan’s effects. Nonetheless, more than 60,000 people filed comments in opposition.
“The Dr. Strangelove wing of EPA does not want this information shared with many of its own experts, let alone the public,” added Ruch, noting that PEER had to file a Freedom of Information Act lawsuit to force release of exposure limits. “This is a matter of public health that should be promulgated in broad daylight rather than slimed through in the witching hours of a departing administration.”
Groundwater 90 tons of contamination cleaner Tri City Herald BY ANNETTE CARY firstname.lastname@example.org. 30 Oct 16 Hanford workers removed more than 90 tons of contaminants from groundwater beneath the nuclear reservation in the fiscal year that just ended, surpassing the amount removed the year before.
“There is an entire groundwater cleanup infrastructure our workers have been fine tuning to make sure we treat and remove the most amount of contamination practical,” said Michael Cline, director of the soil and groundwater division for the Department of Energy at Hanford.
In fiscal 2015 and 2016, a little more than 2.1 billion gallons of contaminated groundwater were pumped out of the ground for treatment at Hanford’s six “pump and treat” facilities.
But more contamination was removed in fiscal 2016 than the previous year, when the Department of Energy gave the total with fiscal 2015 not quite completed as exceeding 75 tons of contaminants removed……..
JCP reveals risk of contaminated water leakage at Kashiwazaki-Kariwa NPP http://www.japan-press.co.jp/modules/news/index.php?id=9945 September 16, 2016
The JCP investigation team consisting of JCP Dietmembers, Fujino Yasufumi (Lower House) and Takeda Ryosuke (Upper House), on September 15 visited the Kashiwazaki-Kariwa NPP to examine its safety measures.
The group investigated Nos. 6 and 7 reactors, which the Nuclear Regulation Authority is examining TEPCO’s application for restart, and sites of subsidence damage caused by liquefaction due to the 2007 Chuestu Offshore Earthquake.
It has come to light that the amount of groundwater being used at the Kashiwazaki-Kariwa NPP is much larger than the amount at other NPPs in Japan. However, TEPCO explained to the JCP group that it has no idea why so much groundwater is being pumped into the nuclear power station. After the investigation, JCP member of the House of Representatives Fujino Yasufumi said to reporters, “The utility has yet to implement measures to control its use of groundwater.” Given the fact that at the Fukushima nuclear power plant, TEPCO is struggling with a serious leakage of radioactively-contaminated water which is caused by groundwater entering the crippled NPP, it is unacceptable for the power company to bring the Kashiwazaki-Kariwa power station back online.
Professor Emeritus of Seismology at Niigata University Tateishi Masaaki, who joined the JCP investigation team, pointed out that the NRA should examine the amount of groundwater used at the NPP and asses the seismic capacity of wells pumping up the groundwater.”
Solar-powered Pipe desalinizes 1.5 billion gallons of drinking water for
California, http://inhabitat.com/solar-powered-pipe-desalinizes-1-5-billion-gallons-of-clean-drinking-water-for-california/ Inhabitat, by Tafline Laylin, 29 aug 16 The infrastructure California needs to generate energy for electricity and clean water, which will be significant, need not blight the landscape. Designs like The Pipe demonstrate how the provision of public services like these can be knitted into every day life in a healthy, aesthetically-pleasing way. A finalist of the 2016 Land Art Generator Initiative design competition for Santa Monica Pier, the solar-powered plant deploys electromagnetic desalination to provide clean drinking water for the city and filters the resulting brine through on-board thermal baths before it is reintroduced to the Pacific Ocean.
According to Khalili Engineers, their design, a long gleaming thing visible from Santa Monica Pier, is capable of generating 10,000 MWh each year, which will in turn produce 4.5 billion liters (or 1.5 billion gallons) of drinking water. Given the current drought throughout California, and the dearth of water in general, a variety of urban micro generators such as this can complement utility-scale energy generation.
“What results are two products: pure drinkable water that is directed into the city’s primary water piping grid, and clear water with twelve percent salinity. The drinking water is piped to shore, while the salt water supplies the thermal baths before it is redirected back to the ocean through a smart release system, mitigating most of the usual problems associated with returning brine water to the sea.”
Power stays on: Permit allows 2 N.J. nuclear reactors to keep operating By Bill Gallo Jr. | For NJ.com June 10, 2016 LOWER ALLOWAYS CREEK TWP. — New Jersey Friday granted a five-year permit that will allow PSEG Nuclear to continue to draw billions of gallons of water from the Delaware River to cool two of its nuclear reactors in Salem County.
The Department of Environmental Protection’s permit does not require the plant’s operator, PSEG Nuclear, to build cooling towers at its Artificial Island generating site in Lower Alloways Creek Township, something environmental groups have long urged.
Without this permit, officially known as the New Jersey Pollutant Discharge Elimination System Permit, the two plants, Salem 1 and 2, might have been forced to shut down…….
Salem 1 and 2, when operating at full power, use 3 billion gallons of water a day from the Delaware River. The water is drawn in, circulated through the plants’ “open loop”cooling systems and discharged back into the river………
Environmentalists have long criticized the plants saying they are causing the death of marine life which is being caught on screens at the point of water intake or by actually being sucked into and through the cooling system…….
Bill Gallo Jr. may be reached at email@example.com. http://www.nj.com/salem/index.ssf/2016/06/power_stays_on_permit_allows_2_nj_nuclear_reactors.html
From Diane D’Arrigo at NIRS (Nuclear Information and Resource Service)
Note that the public has 45 days from when it is published in the Federal Register to comment to the EPA on the PAG-Protective Action Guides. I’ll post an alert tomorrow. This is a media release below. Feel free to send it to interested reporters. Direct them to the press contacts listed at the top of the release. Thanks! – Kay C.
Proposal Would Permit Radiation Exposures Equivalent to 250 Chest X-Rays a Year
Washington, D.C. – Yesterday, the U.S. EPA quietly issued proposals to allow radioactive contamination in drinking water at concentrations vastly greater than allowed under the Safe Drinking Water Act. The new guidance would permit radiation exposures equivalent to 250 chest X-rays a year. Today, environmental groups called the proposal “shocking” and “egregious.”
The EPA proposed Protective Action Guides (PAGs) would allow the general population to drink water hundreds to thousands of times more radioactive than is now legal. For example, radioactive iodine-131 has a current limit of 3 pico-curies per liter (pCi/L), in water but the new guidance would allow 10,350 (pCi/L), 3,450 times higher. For strontium-90, which causes leukemia, the current limit is 8 pCi/L; the new proposed value is 7,400 pCi/L, a 925-fold increase.
“Clean Water is essential for health. Just like lead, radiation when ingested in small amounts is very hazardous to our health. It is inconceivable that EPA could now quietly propose allowing enormous increases in radioactive contamination with no action to protect the public, even if concentrations are a thousand times higher than under the Safe Drinking Water Act,” said Dr. Catherine Thomasson, Executive Director of Physicians for Social Responsibility.
The Bush Administration in its last days unsuccessfully tried to put forward similar proposals, which the incoming Obama Administration pulled back. Now, in the waning months of the Obama Administration, EPA’s radiation office is trying again.
“These levels are even higher than those proposed by the Bush Administration—really unprecedented and shocking,” said Diane D’Arrigo, Nuclear Information and Resource Service. Continue reading
EPA Pushing Hike in Radioactive Contamination in Drinking Water http://www.corporatecrimereporter.com/news/200/epa-pushing-hike-in-drinking-water-radioactivity/ By Editor June 7th, 2016
The Environmental Protection Agency (EPA) has unveiled a plan allowing radioactive contamination in drinking water at concentrations vastly greater than the levels permitted by the Safe Drinking Water Act for long periods following release of nuclear materials.
The new guidance would permit radiation exposures equivalent to 250 chest X-rays a year for the general population for an unlimited time period.
EPA’s “Protective Action Guides” (or PAGs) dramatically relax allowable doses of radioactive material in public drinking water following a Fukushima-type meltdown or “dirty bomb” attack.
They cover the “intermediate phase” after “releases have been brought under control” – an unspecified period that may last for weeks, months or even years.
The agency has declared that the strict limits for chemical exposure in the Safe Drinking Water Act “may not be appropriate…during a radiation incident.”
EPA states that it “expects that the responsible party…will take action to return to compliance with the Safe Drinking Water Act maximum contaminant levels as soon as practicable” but during the indefinite meantime –
The general population may be exposed to radioactive iodine-131 at 10,350 pico-curies per liter of water.
By contrast, the current limit is 3, resulting in a 3,450-times increase; The current strontium-90 limit of 8 pico-curies per liter would be allowed a 925-fold increase; and
In an attempt to shield “sensitive populations,” the plan proposes 500 millirem per year for the general population but only 100 millirem for children under 15, pregnant or nursing mothers without explaining how these latter groups will get access to less contaminated water.
“Given this monstrous proposal, it unclear what lessons EPA learned from the contaminated water calamity of Flint, Michigan,” said. Public Employees for Environmental Responsibility (PEER) executive director Jeff Ruch. “It is unfathomable that a public health agency would prescribe subjecting people to radioactive concentrations a thousand times above Safe Drinking Water Act limits as a ‘protective’ measure.”
Internal EPA documents obtained under Freedom of Information Act litigation brought by PEER show that EPA itself concluded that proposed concentrations “would exceed MCLs [Maximum Contaminant Limits of the Safe Drinking Water Act] by a factor of 100, 1000, and in two instances, 7 million.”
The internal analysis estimated for one radionuclide that drinking only one small glass of water “would result in an exposure that corresponds to a lifetime of drinking liters of water per day at the MCL level.”
The Bush Administration in its last days unsuccessfully tried to put forward similar proposals, which the incoming Obama Administration pulled back.
Now, in the waning months of the Obama Administration, those plans are moving forward with new exposure limits higher than the Bush plan it had rejected.
“President Obama goes to Hiroshima to urge a nuclear-free world while his EPA facilitates a nuclear-ridden water supply,” added Ruch. “It speaks volumes that the current Obama drinking water plan is less protective than his predecessor’s.”
Nuclear Plant Leak Threatens Drinking Water Wells in Florida, NYT By LIZETTE ALVAREZ MARCH 22, 2016 MIAMI — When Florida’s largest power company added two nuclear reactors to an existing plant that sat between two national parks — Biscayne Bay and the Everglades — the decision raised the concerns of environmentalists and some government officials about the possible effects on water quality and marine life.
Now more than four decades later, Florida Power & Light’s reactors atTurkey Point, built to satisfy the power needs of a booming Miami, are facing their greatest crisis. A recent study commissioned by the countyconcluded that Turkey Point’s old cooling canal system was leaking polluted water into Biscayne Bay.
This has raised alarm among county officials and environmentalists that the plant, which sits on the coastline, is polluting the bay’s surface waters and its fragile ecosystem. In the past two years, bay waters near the plant have had a large saltwater plume that is slowly moving toward wells several miles away that supply drinking water to millions of residents in Miami and the Florida Keys.
Samples of the water at various depths and sites around the power plant showed elevated levels of salt, ammonia, phosphorous and tritium……
last month, a Florida administrative judge, Bram Canter, chastised the state and Florida Power & Light, finding that the cooling canal system is “the major contributing cause” for the growth of the large underground saltwater plume and for its westerly move toward the drinking water well fields. He ordered the state and the company to clean up the cooling canals, which it had started to do under an October consent decree with the county.
The Biscayne Aquifer, the judge noted in his ruling, is an “important natural resource.” It is the main source of drinking water in the county and is vital to irrigation and the marsh wetland communities, he added. Judge Canter made his ruling after a Florida rock mining company sued the company over the saltwater plume. http://www.nytimes.com/2016/03/23/us/nuclear-plant-leak-threatens-drinking-water-wells-in-florida.html?ref=energy-environment&_r=1
Nuclear Plant Threatens Miami-Dade’s Water. Mayor Says, ‘This Isn’t Flint’Updated March 10, 2016 [includes audio] npr, GREG ALLEN 10 Mar 16 A study shows excessive saltwater from Florida Power and Light’s nuclear plant is threatening Biscayne Bay and the aquifer that supplies much of Miami’s water “…….
New York City’s nuclear power plant leaking ‘uncontrollable radioactive flow’ into Hudson River, http://inhabitat.com/new-york-citys-nuclear-power-plant-leaking-uncontrollable-radioactive-flow-into-hudson-river/ Inhabitat, by Lacy Cooke, 27 Feb 16 New York governor Andrew Cuomo recently called for an investigation after Indian Point, a nuclear power plant on the Hudson River, reported a leak of radioactive material flowing into the groundwater. Now, new samples taken from the local groundwater show that contamination levels are 80% higher than previous samples, prompting experts to claim this leak is spreading in “a disaster waiting to happen” and calling for the plant to be shut down completely. The Indian Point nuclear power plant is located just 25 miles north of New York City, and it’s a crucial source of of power for over 23 million people living in the greater NYC metropolitan region.
ENTERGY GRAPPLES WITH GROUNDWATER INFILTRATION AT VERMONT YANKEE, VT Digger [good photos] FEB. 18, 2016, BY MIKE FAHER “……….Vermont Yankee stopped power production in December 2014, and the NRC last year removed its resident inspector from the site. But the federal agency has continued periodic inspections, and the groundwater issue first surfaced in the NRC’s fourth-quarter report released in January.
That document says that “radioactive water inventories were increasing due mainly to the intrusion of groundwater.” Officials wrote that Entergy had been considering options both to stem the flow of groundwater and to eventually dispose of it.
After the inspection report was released, Sheehan said the problem is occurring on the lowest level of the plant’s turbine building. Groundwater intrusion has been averaging a few hundred gallons daily, Sheehan said, but there had been “occasional spikes” that on one day rose to 1,500 gallons.
Entergy has a water-management plan and has been pumping and storing groundwater, which is considered contaminated due to its contact with the building. In early February, a total of 90,000 gallons had been collected.
Groundwater intrusion was anticipated and in some ways is a symptom of the plant’s shutdown, since heat from power generation previously had caused some of the liquid to evaporate. But officials said they had not expected so much water to arrive so quickly……..
Regardless of any short-term storage solutions, Entergy must come up with a plan for getting radioactive water off the property eventually. And that plan stretches beyond the groundwater issue, as the NRC has said there are more than 1 million gallons of water at Vermont Yankee including liquid stored in a large, donut-shaped reservoir at the base of the reactor building.
Entergy has requested NRC approval to ship about 200,000 gallons of radioactive water to Idaho for disposal. There also has been preliminary talk of possible discharges into the Connecticut River, though any such plan would come under intense scrutiny by state regulators.
Sheehan said Thursday that the NRC is still “awaiting additional information from Entergy on its broader plans for addressing radioactive water at the site.”……http://vtdigger.org/2016/02/18/entergy-stores-contaminated-vermont-yankee-water-in-swimming-pools/
The Cold War arms race triggered a boom in uranium mining in the U.S. Between the 1940s and 1980s, uranium mining operations were carried out under a 19th century mining law that did not require them to clean up after themselves.When demand for uranium waned in the 1980s, companies simply walked away, leaving open pits and tunnels – and enormous amounts of radioactive waste. Today more than 15,000 abandoned uranium mines dot the U.S. West. Three-quarters of them are located on federal and tribal lands.
Ray Manygoats grew up near Tuba City, Arizona, near a now-abandoned uranium mine. He is no stranger to the substance the Diné (Navajo) people call “the yellow monster.”
“Yellow stuff was always everywhere,” Manygoats told the House Oversight Committee in 2007. “I saw liquids bubbling and tried to stay away from them…we would play in the yellowcake sand near the mill, jumping and rolling around in it.”
Manygoats has suffered from a variety of health troubles, including growths on his eyes; his father has respiratory problems.
Effects on drinking water
“There is a really large and convincing and definitive literature that shows that for miners working underground, uranium mining is associated with a greatly increased risk of lung cancer,” said Douglas Brugge, Professor of Public Health and Community Medicine at Tufts University School of Medicine. “We also know that uranium, radium, radon and arsenic – which is frequently in the ore as well – are toxic. And we know from a fairly large number of studies that people who are drinking water contaminated with uranium have some adverse health effects, mostly kidney damage.”
In 2014, University of New Mexico researchers sampled mine waste at one Arizona site and found uranium concentrations in spring water that was four times the federal drinking-water limit. Thirty percent of Diné lack access to public water and are forced to drink from unregulated wells, springs and livestock ponds, any of which could be contaminated.
Today, only a few companies continue to mine for uranium in the U.S. The most common method is in situ leaching: oxygenated water is injected into the earth, where it dissolves uranium. The solution is then brought back up to the surface and shipped off to processing plants.
In situ mining has been going on since 1988 in northwestern Nebraska, not far from the South Dakota Pine Ridge Reservation that is home to the Oglala Lakota people.
“We are 30 minutes away as the crow flies, fifteen minutes as the wind blows, from the mine site,” said Debra White Plume, executive director ofOwe Aku (“Bring Back the Way”), a grassroots Lakota environmental group.
White Plume and other concerned activists have gone up against one of the world’s largest mining corporations in an attempt to block it from opening up three new mines in the area.
Ninety-eight wells have had to be closed on Pine Ridge because of unusually high rates of cancer, kidney disease and other health problems, said White Plume. She’s convinced that uranium is to blame, and she grows frustrated over suggestions that poor diet or smoking could be a factor.
“Why do the innocent human beings at home have to prove that the big corporation is contaminating them? Why aren’t laws in place that say, ‘OK, if that corporation is going to come into our community, let them show us how they will not harm us, let them show us how they aren’t going to threaten everything we depend on for life: Water, food, air, land?’” she asked.
The US Environmental Protection Agency says it has spent more than $100 million to identify areas at highest risk, part of a multi-year plan to address uranium contamination across the country.
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