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vox_mundi

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Re: Persistent chemical pollution
« Reply #50 on: October 31, 2023, 04:09:02 PM »
Soy Expansion In Brazil Linked to Increase In Childhood Leukemia Deaths
https://medicalxpress.com/news/2023-10-soy-expansion-brazil-linked-childhood.html

Over the past decades, Brazil has become the world's leading soybean producer, as well as the leading consumer of pesticides. Despite concerns about potential public health consequences, little is known about the effects of pesticide exposure in the general population

A new study from the University of Illinois Urbana-Champaign in collaboration with the University of Denver and University of Wisconsin-Madison looks at how soy expansion and increased pesticide use in Brazil's Cerrado and Amazon biomes correlate with increased childhood cancer mortality.

"The Brazilian Amazon region is undergoing a transition from low-input cattle production to intensified soy culture with high use of pesticides and herbicides. The expansion has happened really quickly, and it appears educational efforts and training for pesticide applicators didn't match the growth in pesticide use. When not used properly, there are health implications," said Marin Skidmore, assistant professor in the Department of Agricultural and Consumer Economics, part of the College of Agricultural, Consumer and Environmental Sciences (ACES) at U. of I.

"As this transition was happening, there were documented cases of pesticide poisoning of agricultural workers and evidence of chemicals in the blood and urine samples of non-agricultural workers in the surrounding communities," Skidmore said. "This indicates that this rollout had happened in a potentially dangerous way that was leaving people exposed."

The researchers investigated public health consequences of exposure to pesticides, focusing on children as the most vulnerable population. They specifically looked at deaths from acute lymphoblastic leukemia (ALL), the most common childhood bloodborne cancer.

Soy production in the Cerrado area tripled from 2000 to 2019, and in the Amazon region there was a 20-fold increase, from 0.25 to 5 million hectares. Pesticide use in the study region increased between three- and 10-fold during the period as well. Brazilian soy farmers apply pesticides at a rate 2.3 times higher per hectare than the United States.

"Our results show a significant relationship between Brazil's soy expansion and childhood deaths from ALL in the region," Skidmore said. "Results suggest that about half of pediatric leukemia deaths over a 10-year period may be linked to agricultural intensification and exposure to pesticides."



... About 50% of the rural households in this region had a well or cistern at the time of the 2006 agricultural census, which left the other 50% reliant on surface water as a source of drinking water. If the surface water is contaminated, pesticides used in soy production upstream can reach children living downstream through waterways."

"Our concern is that our results are only the tip of the iceberg. We measured one small, very precise outcome. Pesticide exposure may also result in non-fatal cases of leukemia, and there is a risk of impacts on the adult and teenage community," she said.

 Marin Skidmore et al, Agricultural intensification and public health: Evidence from Brazilian soy expansion, Proceedings of the National Academy of Sciences (2023)
https://www.pnas.org/doi/10.1073/pnas.2306003120

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Pesticide Policy Failings in Africa a Risk to Health, Says Expert
https://phys.org/news/2023-10-pesticide-policy-africa-health-expert.html

Africa is using more pesticides, but there aren't enough laws, rules, and policies to protect farmers from the harmful effects, Fredrick Otieno, chemicals risk manager and environmental planner at the Center for Environmental Justice and Development in Nairobi, tells SciDev.Net.

Registration of agricultural pest control products should be required by law and farmers should be able to obtain licenses to bring registered pesticides into a country, says Otieno, adding that anyone who flouts the rules should be penalized.

But this is not always the case.

Market surveillance to curb illegal imports and use in Africa is often lacking due to limited resources and illegal sales and use of chemicals are commonplace.

... Many farmers in sub-Saharan Africa get pesticides through government programs and subsidies, but not all have the information at their fingertips to assess which chemicals are safe.

https://phys.org/news/2023-07-pesticides-nigeria-law.html
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kassy

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Re: Persistent chemical pollution
« Reply #51 on: November 03, 2023, 06:40:44 PM »
Fossil fuels responsible for heart arrhythmias in mammals

One of the most common byproducts of the burning of fossil fuels, phenanthrene, causes heart arrythmias in mice, proving for the first time it is toxic to mammals, new research has discovered.

The study, led by The University of Manchester in collaboration with the University of Bristol and Moscow State University, and funded by the British Heart Foundation, is published today [1 November] in the journal Environmental Health Perspectives.

...

Thanks to earlier work by one of the lead authors Professor Holly Shiels from Manchester in conjunction with scientists at the University of Bristol, Moscow State University, National Oceanic and Atmospheric Association (NOAA) and Stanford University, phenanthrene's toxicity to the hearts of fish and crustaceans (crayfish) has been well established.

But now the team has discovered the change also occurs in healthy mouse hearts when directly exposed to phenanthrene, mimicking what happens when we breath in pollution.

Professor Holly Shiels said: "We've known that phenanthrene is causally linked to cardiotoxicity in fish for many years - scientists recognised this following the disastrous impact of the Exxon Valdez oil disaster in Alaska in 1989.

"But we now know this same effect occurs in mammals, and we are also able to show its causal mechanism."

Phenanthrene is a polycyclic aromatic hydrocarbon (PAH) that is present in crude oil and emitted into the air when fossil fuels are burnt.

"It is widely known that PAH's in general are bad for human health, but no one really studied the impact of the lower molecular weight PAH’s" added Professor Shiels.

...

Phenanthrene is one of the compounds produced when fossil fuel is burned; it is present in the gas phase of air pollution and also adheres to the surface of particulate matter (PM).

It can be inhaled into the lung and then translocated into the bloodstream, eventually finding its way to the heart. Epidemiological evidence has long shown a positive association between PM2.5 concentration and the incidence of arrhythmias and both PM and diesel particles have been shown to trigger arrhythmias in rodents.

"Our findings suggest phenanthrene could be involved in these pathologies" said Professor Shiels.

...

https://www.bristol.ac.uk/news/2023/november/phenanthrene-heart.html
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SteveMDFP

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Re: Persistent chemical pollution
« Reply #52 on: November 03, 2023, 09:00:26 PM »
Fossil fuels responsible for heart arrhythmias in mammals

One of the most common byproducts of the burning of fossil fuels, phenanthrene, causes heart arrythmias in mice, proving for the first time it is toxic to mammals, new research has discovered.
...
"Our findings suggest phenanthrene could be involved in these pathologies" said Professor Shiels.
...

https://www.bristol.ac.uk/news/2023/november/phenanthrene-heart.html

Thanks for this.  The epidemiological connection between air pollutants and heart disease (incluuding sudden death) has long been recognized.  This study helps tease out specific mechanisms for the observed relationship.  The details of the study are probably not important for our purposes, but an accompanying editorial provides good background on the topic:

Invited Perspective: The Silent Threat—Air Pollution’s Link to Arrhythmias
https://ehp.niehs.nih.gov/doi/full/10.1289/EHP13720

I was motivated to dig into this by my own experience with arrthymia -- atrial fibrillation for several months, now resolved.  I probably can't sue the oil companies for this, though.

neal

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Re: Persistent chemical pollution
« Reply #53 on: November 17, 2023, 03:27:48 PM »
children whose birth residence is within 2 kilometers of a fracking well are 2 to 3 times more likely to be diagnosed with acute lymphoblastic leukemia between the ages of 2 and 7 than children living further away

Unconventional Oil and Gas Development Exposure and Risk of Childhood Acute Lymphoblastic Leukemia: A Case–Control Study in Pennsylvania, 2009–2017

https://ehp.niehs.nih.gov/doi/10.1289/EHP11092

kassy

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Re: Persistent chemical pollution
« Reply #54 on: December 08, 2023, 09:22:03 PM »
The EPA hasn’t banned this brain-damaging pesticide, so states are stepping up

Chlorpyrifos is the most widely used organophosphate pesticide in the U.S., with millions of pounds sprayed every year. Scientists have definitively linked it to severe brain damage in children and fetuses, but a scheduled federal ban was scuttled by the Trump administration. Now some states are taking regulation into their own hands.

Here’s a timeline of chlorpyrifos regulation at the federal and state levels.

1965

Dow Chemical Co. introduced chlorpyrifos. Its largest agricultural use has been on corn, although this use has declined in recent years. It is also sprayed on soybeans, fruit and nut trees, Brussels sprouts, cranberries and other row crops and has recently been found on frozen strawberries and in milk.

1993

The National Academy of Science released “Pesticides in the Diets of Infants and Children,” a study chaired by Dr. Philip Landrigan, a pediatrician and epidemiologist who is now director of the Program in Global Public Health and the Common Good at Boston College.

1996

The Landrigan report led to passage of the Food Quality Protection Act, or FQPA. It requires the Environmental Protection Agency, when it determines the legal limit for pesticides, to add a tenfold extra margin of safety to “ensure that there is a reasonable certainty that no harm will result to infants and children from aggregate exposure to the pesticide chemical residue.”

EPA’s proposed and rescinded ban

October 2015

Numerous studies found overwhelming evidence showing that even small exposures of chlorpyrifos can cause irreparable damage to the parts of the brain that control language, memory, emotion and behavior, and that exposure during development leads to lower IQ levels. The EPA’s assessment of these studies concluded that current levels of chlorpyrifos found on food and in drinking water are unsafe. Based on this assessment and the FQPA standard, the Obama administration's EPA proposed a ban of chlorpyrifos on food crops.

Landrigan said of the rule, “Based on the strong consensus of the pediatric and the public health communities, the FQPA stated unequivocally that regulation of toxic pesticides must focus, first and foremost, on protecting infants and children.... When the EPA fails to apply this principle, children may be exposed to levels of chemical pesticides that can profoundly harm their health.”

...

2022

Roughly 30 million pounds of chlorpyrifos will have been sprayed on U.S. cropland between 2018 and 2022, according to a 2018 estimate by the U.S. Geological Survey.

State actions

In the absence of federal action, some states have taken steps to protect their citizens from chlorpyrifos. Three states have banned it from use, and two have proposed a ban.

June 2018

Hawai'i became the first state to ban chlorpyrifos. The state senator who wrote the law said: “We have been guided by the belief that we must always put our keiki [children] first.”

...

August 2021

The EPA announced on August 18, 2021, that it would ban all uses of chlorpyrifos on food, after decades of allowing its use. EWG applauded the long-overdue move as a vital step toward protecting public health.

https://www.ewg.org/news-insights/news/2023/12/epa-hasnt-banned-brain-damaging-pesticide-so-states-are-stepping

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kassy

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Re: Persistent chemical pollution
« Reply #55 on: December 08, 2023, 09:27:26 PM »
Not right now’: Key marine species turned off sex by plastic chemicals

A new study has found that chemical additives in everyday plastic might be stopping – or, at best, interrupting – the reproductive habits of a shrimp-like species that is key to the marine food chain. The findings provide a different perspective on the potential damage caused by specific pollutants.

Much of the research into the effect of plastics on marine and freshwater life has focused on large particles and visible plastic and has focused on vertebrates. Researchers from the University of Portsmouth in the UK have, instead, looked at how the additives found in everyday plastics can negatively impact the sex life of a key invertebrate aquatic species.

“These creatures are commonly found on European shores, where they make up a substantial amount of the diet of fish and birds,” said Alex Ford, the study’s corresponding author. “If they are compromised, it will have an effect on the whole food chain.”

The creature to which Ford is referring is Echinogammarus marinus, a shrimp-like creature or amphipod, found on coastlines from Norway to southern Portugal. Precopulatory pairing – forming pairs to reproduce – is a common mate-guarding strategy observed in the species that is imperative for mating success. It’s been used in previous studies as a quantitative measure of the impact of various compounds on mating by recording the time taken for the disruption and reformation of pairs. Pairs of E. marinus typically lock together for up to two days while mating.

In the current study, the researchers investigated the impact of four plastic additives on the precopulatory pairing behavior and sperm count of E. marinus. The additives they considered included two plasticizers, n-butyl benzenesulfonamide (NBBS) and triphenyl phosphate (TPHP), and two phthalates, diethylhexyl phthalate (DEHP) and dibutyl phthalate (DBP).

“We chose these four additives because the suspected danger they pose to human health is well-documented,” said Bidemi Green-Ojo, lead author of the study. “Two of the chemicals (DHP and DEHP) are regulated and not allowed to be used in products in Europe. The other two chemicals have no current restrictions on them and are found in many household products. We wanted to test the effects these chemicals had on aquatic mating behavior.”

DEHP and DBP are found in medical supplies, food packaging and toys. TPHP is mainly used as a flame retardant in products like nail polish, children’s products and electronic equipment, whereas NBBS can be found in nylon, medical devices and cooking utensils.

A total of 480 pairs were exposed to one of the four additives, each at six different concentrations, including two controls. Exposure was carried out in rectangular dishes with a separator. The males and corresponding females were isolated on opposite sides of the separator then, after one hour of exposure, the separator was removed. The researchers measured contact time (unsuccessful attempts at establishing a precopulatory pair) and re-pairing time (time taken for the successful formation of a precopulatory pair).

They found that exposure to all chemical additives prolonged contact and re-pairing times. The effect on re-pairing was concentration-dependent, with re-pairing rates reduced by around 30% at 5 µg/L and by more than 50% at concentrations above 5 µg/L. These concentrations are lower than those previously reported in some freshwater and marine systems in Europe and Asia. Increased concentrations of the plastic additives tested drastically reduced the proportion of pairs that re-paired. The researchers observed that animals that hadn’t paired within a day or two didn’t do so over the next two to three days.

In E. marinus exposed to TPHP and DBP for 14 days, sperm count declined with increasing concentrations. However, exposure to NBBS and DEHP did not show a concentration-response relationship.

“This unsuccessful mating behavior has serious repercussions, not only for the species being tested but potentially for the population as a whole,” Ford said. “These animals form pairs to reproduce. Once they were exposed to a chemical, they would break apart from their mate and take much longer – in some cases days – to re-pair, and sometimes not at all.”

The researchers say that studies like this provide a different perspective on the potential damage caused by specific pollutants.

“We must understand more about these chemicals and how they affect behavior,” said Green-Ojo. “Many types of behavior – such as feeding, fight or flight mode, and reproduction – are essential in an animal’s life, and any abnormal behavior may reduce the chances of survival.”

https://newatlas.com/environment/plastic-additives-interrupt-mating-behavior-key-marine-species/

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kassy

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Re: Persistent chemical pollution
« Reply #56 on: December 20, 2023, 07:46:44 PM »
Traces of sunscreen agents found in the snow at the North Pole


Traces of sunscreen agents were found at the North Pole, on the glaciers of the Svalbard archipelago. They were mainly deposited in winter, when night falls over the Arctic.

A study conducted by researchers from Ca' Foscari University of Venice and the Institute of Polar Sciences—National Research Council of Italy (CNR-ISP), in collaboration with the University Center in Svalbard (UNIS) measured their concentration and investigated their origin. The results are published in the journal Science of the Total Environment.

The aim of the work was to present the first overview of the environmental presence of personal care products in the Arctic, providing data on their spatial and seasonal distribution in the snowpack. Thanks to an Arctic Field Grant project in collaboration with CNR-ISP and the Italian research station "Dirigibile Italia" in Ny Ålesund, between April and May 2021 samplings were conducted on five glaciers located across the Brøggerhalvøya peninsula.

The variety of sites, selected near human settlements and in more remote locations, made it possible to study the presence and behavior of emerging contaminants, which are still-in-use compounds, but under scrutiny for their potential harmfulness to the environment. Results revealed the presence at the highest latitudes of various commonly used compounds, such as fragrance materials and UV filters.

"Many of the contaminants we have analyzed, such as Benzophenone-3, Octocrylene, Ethylhexyl Methoxycinnamate and Ethylhexyl Salicylate had never been identified in Arctic snow before," says Marianna D'Amico, a Ph.D. student in Polar Sciences at Ca' Foscari University of Venice and first author of the study.

"The results show that the presence of emerging contaminants in remote areas can be attributed to the role of long-range atmospheric transport," explains Marco Vecchiato, researcher in Analytical Chemistry at Ca' Foscari and co-author of the paper. "In fact, the highest concentrations were found in winter deposition. At the end of winter, contaminated air masses from Eurasia reach the Arctic more easily."

"The most noticeable example concerns certain UV filters normally used as ingredients in sun creams. The highest winter concentrations of these contaminants can only be traced back to the continental regions inhabited at lower latitudes: in Svalbard, during the Arctic night, the sun does not rise and sunscreens are not used," Vecchiato continues.

...

https://phys.org/news/2023-12-sunscreen-agents-north-pole.html
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vox_mundi

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Re: Persistent chemical pollution
« Reply #57 on: January 05, 2024, 10:44:10 PM »
Plastic Chemicals Hiding in Your Food
https://www.consumerreports.org/health/food-contaminants/the-plastic-chemicals-hiding-in-your-food-a7358224781/

By the time you open a container of yogurt, the food has taken a long journey to reach your spoon. You may have some idea of that journey: From cow to processing to packaging to store shelves. But at each step, there is a chance for a little something extra to sneak in, a stowaway of sorts that shouldn’t be there.

That unexpected ingredient is something called a plasticizer: a chemical used to make plastic more flexible and durable. Today, plasticizers—the most common of which are called phthalates—show up inside almost all of us, right along with other chemicals found in plastic, including bisphenols such as BPA. These have been linked to a long list of health concerns, even at very low levels.

Consumer Reports has investigated bisphenols and phthalates in food and food packaging a few times over the past 25 years. In our new tests, we checked a wider variety of foods to see how much of the chemicals Americans actually consume. The answer? Quite a lot. Our tests of nearly 100 foods found that despite growing evidence of potential health threats, bisphenols and phthalates remain widespread in our food.

The findings on phthalates are particularly concerning: We found them in almost every food we tested, often at high levels. The levels did not depend on packaging type, and no one particular type of food—say, dairy products or prepared meals—was more likely than another to have them.

For example, we found high levels in, among other products, Del Monte sliced peaches, Chicken of the Sea pink salmon, Fairlife Core Power high-protein chocolate milkshakes, Yoplait Original French vanilla low-fat yogurt, and several fast foods, including Wendy’s crispy chicken nuggets, a Chipotle chicken burrito, and a Burger King Whopper with cheese. Organic products were just as problematic: In fact, the highest phthalate levels we found were in a can of Annie’s Organic cheesy ravioli.

There are few regulations restricting the use of these chemicals in food production, or requiring that manufacturers test foods for them.

Bisphenols and phthalates in our food are concerning for several reasons.

To start, growing research shows that they are endocrine disruptors, which means that they can interfere with the production and regulation of estrogen and other hormones. Even minor disruptions in hormone levels can contribute to an increased risk of several health problems, including diabetes, obesity, cardiovascular disease, certain cancers, birth defects, premature birth, neurodevelopmental disorders, and infertility.

Those problems typically develop slowly, sometimes over decades, says Philip Landrigan, MD, a pediatrician and the director of the Program for Global Public Health and the Common Good at Boston College. "Unlike a plane crash, where everyone dies at once, the people who die from these die over many years."

Another concern is that with plastic so ubiquitous in food and elsewhere, the chemicals can’t be completely avoided. And though the human body is pretty good at eliminating bisphenols and phthalates from our systems, our constant exposure to them means that they enter our blood and tissue almost as quickly as they’re eliminated. And plasticizers in particular can easily leach out of plastic and other materials. In addition, the chemicals’ harmful effects may be cumulative, so steady exposure to even very small amounts over time could increase health risks.

Determining an acceptable level for these chemicals in food is tricky. Regulators in the U.S. and Europe have set thresholds for only bisphenol A (BPA) and a few phthalates, and none of the foods CR tested had amounts exceeding those limits.

But "many of these thresholds do not reflect the most current scientific knowledge, and may not protect against all the potential health effects," says Tunde Akinleye, the CR scientist who oversaw CR’s tests. "We don’t feel comfortable saying these levels are okay," he says. "They’re not."

The decision to allow these chemicals in food "is not evidence-based," says Ami Zota, ScD, an associate professor of environmental health sciences at the Columbia University Mailman School of Public Health in New York City, who has studied the risks of phthalates.

For example, one of the most well-studied phthalates is called DEHP. Studies have linked it to insulin resistance, high blood pressure, reproductive issues, early menopause, and other concerns at levels well below the limits set by American and European regulators. It was the most common phthalate that we found in our tests, with more than half of the products we tested having levels above what research has linked to health problems.

In addition, Akinleye says that with exposure to these chemicals coming from so many sources—not only food but also other products, such as printed receipts and household dust— it’s difficult to quantify what a "safe" limit would be for a single food. "The more we learn about these chemicals, including how widespread they are, the more it seems clear that they can harm us even at very low levels," he says.

https://article.images.consumerreports.org/image/upload/v1704381057/prod/content/dam/surveys/Consumer_Reports_Test_Methodology_for_Bisphenols_and_Phthalates_in_Food_01-24.pdf
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Insensible before the wave so soon released by callous fate. Affected most, they understand the least, and understanding, when it comes, invariably arrives too late

kassy

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Re: Persistent chemical pollution
« Reply #58 on: January 06, 2024, 05:15:05 PM »
Time to clean that up too. No sense in slowly poisoning ourselves.
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neal

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Re: Persistent chemical pollution
« Reply #59 on: January 27, 2024, 03:35:16 PM »
Canada tar sands worse than reported


https://arstechnica.com/science/2024/01/air-pollution-from-canadas-tar-sands-is-much-worse-than-we-thought/

https://www.science.org/doi/10.1126/science.adj6233

The research, published Thursday in Science, took direct measurements of organic carbon emissions from aircraft flying above the tar sands, also called oil sands, and found levels that were 20 to 64 times higher than what companies were reporting. Total organic carbon includes a wide range of compounds, some of which can contribute directly to hazardous air pollution locally and others that can react in the atmosphere to form small particulate matter, or PM 2.5, a dangerous pollutant that can travel long distances and lodge deep in the lungs.

The study found that tar sands operations were releasing as much of these pollutants as all other human-made sources in Canada combined. For certain classes of heavy organic compounds, which are more likely to form particulates downwind, the concentrations were higher than what’s generally found in large metropolises like Los Angeles.



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Re: Persistent chemical pollution
« Reply #60 on: February 03, 2024, 02:01:53 AM »
 Proposal to List Nine Per- and Polyfluoroalkyl Compounds as Resource Conservation and Recovery Act Hazardous Constituents

Rule Summary

On January 31, 2024, the Administrator of the United States Environmental Protection Agency signed a proposal to change the Resource Conservation and Recovery Act regulations by adding nine particular per- and polyfluoroalkyl compounds, their salts, and their structural isomers, to its list of hazardous constituents in Title 40 of the Code of Federal Regulations Part 261 Appendix VIII. These nine PFAS are:

    Perfluorooctanoic acid.
    Perfluorooctanesulfonic acid
    Perfluorobutanesulfonic acid.
    Hexafluoropropylene oxide-dimer acid.
    Perfluorononanoic acid.
    Perfluorohexanesulfonic acid.
    Perfluorodecanoic acid.
    Perfluorohexanoic acid.
    Perfluorobutanoic acid.

To be listed as a hazardous constituent under RCRA, scientific studies must show that the chemical has toxic, carcinogenic, mutagenic, or teratogenic effects on humans or other life forms. EPA evaluated  toxicity and epidemiology data for these chemicals and determined that these nine PFAS compounds meet the criteria for listing as a RCRA hazardous constituent.

With this proposal, EPA is working to protect communities by strengthening its ability to address PFAS contamination under the RCRA cleanup program, known as the RCRA Corrective Action Program. This change would facilitate additional corrective action to address releases of these specific PFAS at RCRA hazardous waste treatment, storage, and disposal facilities. It would not require the suite of cradle to grave management controls that are associated with a RCRA hazardous waste.

EPA will collect comments on this proposal for 60 days once it is published in the Federal Register.

https://www.epa.gov/hw/proposal-list-nine-and-polyfluoroalkyl-compounds-resource-conservation-and-recovery-act

vox_mundi

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Re: Persistent chemical pollution
« Reply #61 on: February 07, 2024, 07:48:06 PM »
One In 10 Premature Births Linked to Plastic Chemicals: Study
https://phys.org/news/2024-02-premature-births-linked-plastic-chemicals.html

One in 10 premature births in the United States have been linked to pregnant women being exposed to chemicals in extremely common plastic products, a large study said on Wednesday.

The chemicals, called phthalates, are used to soften plastic and can be found in thousands of consumer items including plastic containers and wrapping, beauty care products and toys.

Phthalates have been known for decades to be "hormone disruptors" which affect a person's endocrine system and have been previously linked to obesity, heart disease, some cancers and fertility problems.

Because they affect hormones, these chemicals "can precipitate early labor and early birth", lead study author Leonardo Trasande of New York University's Langone Health center told AFP.

By analyzing the level of phthalates in the urine of more than 5,000 pregnant women in the United States, the researchers were able to examine how exposure to the chemicals could have affected how early the babies were born.

The 10 percent of mothers with the highest levels of phthalates had a 50-percent increased risk of giving birth before week 37 compared to the lowest 10 percent, according to the study in The Lancet Planetary Health.

Extrapolating their findings across the US, the researchers said that nearly 56,600 preterm births could have linked to phthalate exposure in 2018 alone, roughly 10 percent of the country's premature births that year.

Babies born prematurely or at a lower weight tend to have more health problems later in life.

The researchers estimated the resulting medical and social costs of phthalate exposure for preterm births in the United States was between $1.6 and $8.1 billion.

While the study was carried out in the US, Trasande said that phthalates are so ubiquitous that five to 10 percent of premature births in most other countries could probably be linked to the chemicals.

... Trasande warned that putting plastic containers in microwaves or dishwashers can bring out phthalates, allowing them to later absorb into food.

Leonardo Trasande et al, Prenatal phthalate exposure and adverse birth outcomes in the USA: a prospective analysis of births and estimates of attributable burden and costs, The Lancet Planetary Health (2024)
https://www.thelancet.com/journals/lanplh/article/PIIS2542-5196(23)00270-X/fulltext
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vox_mundi

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Re: Persistent chemical pollution
« Reply #62 on: February 15, 2024, 05:10:55 PM »
New Study Finds Little-Known Toxic Crop Chemical In 4 Out of 5 People Tested
https://phys.org/news/2024-02-toxic-crop-chemical-people.html



A new Environmental Working Group study has found chlormequat, a little-known pesticide, in four out of five people tested. Because the chemical is linked to reproductive and developmental problems in animal studies, the findings suggest the potential for similar harm to humans.

EWG's research, published February 15 in the Journal of Exposure Science and Environmental Epidemiology, tested the urine of 96 people for the presence of chlormequat, finding it in 77 of them.

"The ubiquity of this little-studied pesticide in people raises alarm bells about how it could potentially cause harm without anyone even knowing they've consumed it."

Some animal studies show that chlormequat can damage the reproductive system and disrupt fetal growth, changing development of the head and bones and altering key metabolic processes. This research raises questions about whether chlormequat could also harm humans.

Environmental Protection Agency regulations allow the chemical to be used on ornamental plants only—not food crops—grown in the U.S.

But since 2018, the EPA has permitted chlormequat on imported oats and other foods, increasing the allowed amount in 2020. Both regulatory changes took place under the Trump administration.

... EWG conducted its own tests of oat-based foods in 2022 and 2023, finding chlormequat in numerous non-organic oat-based products. Organic oat products had little to no detections of the chemical.

A pilot study of chlormequat in food and urine from adults in the United States from 2017 to 2023, Journal of Exposure Science & Environmental Epidemiology (2024)
https://www.nature.com/articles/s41370-024-00643-4

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Chlormequat: What You Need to Know About This Problematic Pesticide
https://www.ewg.org/news-insights/news/2023/05/chlormequat-what-you-need-know-about-problematic-pesticide

“There are three classes of people: those who see. Those who see when they are shown. Those who do not see.” ― anonymous

Insensible before the wave so soon released by callous fate. Affected most, they understand the least, and understanding, when it comes, invariably arrives too late

morganism

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Re: Persistent chemical pollution
« Reply #63 on: February 19, 2024, 11:05:54 PM »
(a pretty generic report in the gaurdian on PFAS, tho tying exposure to plastic packaging, and at least shows it is getting lots of general coverage)

New study reveals diet link to PFAS ‘forever chemicals’ in human body

US research shows foods such as butter and processed meat likely to increase levels of toxic PFAS in blood over time
(...)
The study looked at two cohorts with a combined total of over 700 people. For one group, the authors checked dietary consumption and PFAS levels over a four-year period.

Among evidence of food packaging contamination was the finding that burritos, fajitas, tacos, French fries and pizza made at home were associated with lower PFAS concentrations. But those who ate the same dishes prepared at restaurants typically showed increased PFAS concentrations in their blood.

“It’s really interesting to find that these foods that are maybe not so healthy, when they’re cooked at home were a lower source of PFAS, and that definitely points to food packaging,” Hampson said.

The research also found butter likely increased PFAS levels. Though consumption of nuts was associated with lower levels of the chemicals in blood, nut butter showed higher levels. Butter is often wrapped in greaseproof paper, Hampson noted, though the contamination could also stem from cows or processing.

Higher PFAS levels in blood associated with higher bottled water consumption also may point to contaminated packaging, or contamination of the water source. And the authors suspect the link between tea and high PFAS levels may largely stem from tea bags treated with the chemicals, though more research is needed.

Processed meats across the board seemed to boost PFAS blood levels. Hampson said the finding was unsurprising because processing opens numerous entry points for the chemicals, though non-processed cuts of pork also showed a strong association. That suggests the pigs are likely contaminated.

Those who consumed higher levels of sugar, fruit drinks and soda typically showed lower levels of PFAS, which the authors said caught them by surprise. They hypothesize that young adults who made up one of their cohorts drink higher levels of soda and fruit drinks, which may generally be less contaminated with PFAS than tap or bottled water.

The association was one of several in which unhealthy foods appeared to protect people from PFAS contamination, while some healthy foods seemed to drive up PFAS levels.

“We need more public health monitoring, especially of healthy foods, to make sure we don’t have unintended chemical exposures in what we know are foods that are healthy in a lot of other ways,” said Jesse Goodrich, a USC researcher and study co-author.

https://www.theguardian.com/environment/2024/feb/19/pfas-toxic-forever-chemicals-study


morganism

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Re: Persistent chemical pollution
« Reply #64 on: February 23, 2024, 08:07:43 PM »
It’s not just toxic chemicals. Radioactive waste was also dumped off Los Angeles coast

For decades, a graveyard of corroding barrels has littered the seafloor just off the coast of Los Angeles. It was out of sight, out of mind — a not-so-secret secret that haunted the marine environment until a team of researchers came across them with an advanced underwater camera.

Speculation abounded as to what these mysterious barrels might contain. Startling amounts of DDT near the barrels pointed to a little-known history of toxic pollution from what was once the largest DDT manufacturer in the nation, but federal regulators recently determined that the manufacturer had not bothered with barrels. (Its acid waste was poured straight into the ocean instead.)

Now, as part of an unprecedented reckoning with the legacy of ocean dumping in Southern California, scientists have concluded the barrels may actually contain low-level radioactive waste. Records show that from the 1940s through the 1960s, it was not uncommon for local hospitals, labs and other industrial operations to dispose barrels of tritium, carbon-14 and other similar waste at sea.
(snip)
And in the process of digging up old records, the U.S. Environmental Protection Agency discovered that from the 1930s to the early 1970s, 13 other areas off the Southern California coast had also been approved for dumping of military explosives, radioactive waste and various refinery byproducts — including 3 million metric tons of petroleum waste.

In the study published this week, Valentine found high concentrations of DDT spread across a wide swath of seafloor larger than the city of San Francisco. His team has been collecting hundreds of sediment samples as part of a methodical, large-scale effort to map the footprint of the dumping and analyze how the chemical might be moving through the water and whether it has broken down. After many trips out to sea, they still have yet to find the boundary of the dump site, but concluded that much of the DDT in the deep ocean remains in its most potent form.

Further analysis, using carbon-dating methods, determined that the DDT dumping peaked in the 1950s, when Montrose Chemical Corp. of California was still operating near Torrance during the pesticide’s postwar heyday — and prior to the onset of formal ocean dumping regulations.

Clues pointing to the radioactive waste emerged in the process of sorting through this DDT history.

Jacob Schmidt, lead author of the study and a PhD candidate in Valentine’s lab, combed through hundreds of pages of old records and tracked down seven lines of evidence indicating that California Salvage, the same company tasked with pouring the DDT waste off the coast of Los Angeles, had also dumped low-level radioactive waste while out at sea.

The company, now defunct, had received a permit in 1959 to dump containerized radioactive waste about 150 miles offshore, according to the U.S. Federal Register. Although archived notes by the U.S. Atomic Energy Commission say the permit was never activated, other records show California Salvage advertised its radioactive waste disposal services and received waste in the 1960s from a radioisotope facility in Burbank, as well as barrels of tritium and carbon-14 from a regional Veterans Administration hospital facility.
(more)

https://www.latimes.com/environment/story/2024-02-21/radioactive-waste-ocean-dumping-los-angeles-coast

morganism

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Re: Persistent chemical pollution
« Reply #65 on: February 24, 2024, 09:07:08 AM »
Researchers use electron beams to eradicate forever chemicals in water

(...)
It turns out that high-energy electron beams are excellent candidates for destroying PFAS in the environment. Researchers at the U.S. Department of Energy's Fermi National Accelerator Laboratory, in collaboration with 3M, have successfully demonstrated that an electron beam can destroy the two most common types of PFAS in water—PFOA and PFOS.

"The electron beam is a promising technology to break down PFAS in large volumes of water that contain high concentrations of PFAS," said Fermilab principal investigator Charlie Cooper.

The Fermilab team, which includes scientist Slavica Grdanovska, engineering physicist Yichen Ji and Cooper, used an electron beam accelerator at the laboratory for their testing. Used for proof-of-concept testing, the Accelerator Application Development and Demonstration accelerator, or A2D2, at the Illinois Accelerator Research Center on Fermilab's campus is also available to industry, universities and other federal laboratories as a research tool.

"The fact that we were working with 3M, a world expert in PFAS, was really the first time that you had the experts on ionizing radiation, electron beam accelerators and PFAS working on the same project," said Cooper.
Electron beams to the rescue

Conventional water treatment methods, such as reverse osmosis, granular activated carbon or ion exchange resin, do not destroy PFAS; they simply concentrate PFAS in a form which subsequently requires treatment or disposal. In some cases, conventional water treatment techniques can even make the environmental contamination worse.

In contrast, the electron beam actively destroys the forever chemicals and does so quickly, enabling a larger volume of water to be treated in the same amount of time as some other methods. PFAS molecules are difficult to break down because they contain a carbon–fluorine bond, which is very strong and the reason PFAS are commonly used in the chemical manufacturing industry. But the strength of that C–F bond is also the reason they don't break down in nature. The electron beam, however, is very effective at breaking that C–F bond.

Electron beams could be used in pump-and-treat methods, a common groundwater treatment approach, or in a manufacturing facility, directly treating waste streams before they leave the facility.
Demonstrating its effectiveness

The Fermilab team used PFAS-contaminated water samples provided by 3M that were sealed in gastight containers the size of a whiteboard marker. Each of the containers was made of borosilicate glass, which wouldn't be significantly affected by exposure to electron beams, and an aluminum seal was crimped onto the glass with a piece of PFAS-free rubber between the aluminum and the glass. Great care was taken to ensure there were no PFAS in any of the materials used to house the samples. Fermilab irradiated these samples with the electron beam and shipped them back to 3M.

3M sampled both the headspace—the air at the top of the container—and the liquid to verify that the PFAS of concern had been destroyed without releasing hazardous products to the air.

PFAS are prevalent in many industries, and so is the human reliance on essential products that contain PFAS, such as computers and lithium-ion batteries. One of the most problematic PFAS-containing products in terms of environmental contamination has historically been aqueous film forming foam, or AFFF, which was used for firefighting at airports and in the military; it's made of PFOA and PFOS.

When you spray AFFF onto a liquid, it moves to the surface and extinguishes the fire by preventing oxygen from getting to it. But, when used it can seep into soil and groundwater. AFFF has been used in the United States and worldwide for decades, largely by the military and aviation industry. Recently, both government and industry started examining PFAS-free substitutes. Alternatives, however, do not exist in many applications and are hard to find or perform less effectively.

Although electron beams are very effective at breaking down entire suites of PFAS compounds, not every compound has been tested so far. The researchers found that all of the PFAS compounds the U.S. Environmental Protection Agency is currently considering regulating in drinking water were effectively destroyed by electron beam technology. But there may be types of PFAS an electron beam cannot destroy.

Research continues on several fronts to find alternatives to PFAS. At the same time, leaders in science and industry will continue to search for and enhance methods to eradicate these forever chemicals in the environment. Fermilab and its electron-beam technology stand at the forefront of this research.

https://phys.org/news/2024-02-electron-eradicate-chemicals.html

morganism

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Re: Persistent chemical pollution
« Reply #66 on: February 29, 2024, 02:07:56 AM »
Grease-proof food packaging containing ‘forever chemicals’ is no longer being sold: FDA

Grease-proof food wrappers being sold in the U.S. will no longer contain toxic “forever chemicals,” the Food and Drug Administration (FDA) announced Wednesday.

Jim Jones, the FDA’s deputy commissioner for human foods, said in a written statement that food packaging manufacturers are no longer selling wrappers containing perfluoroalkyl and polyfluoroalkyl substances, or PFAS.

The statement did not address whether restaurants will continue to use already purchased packaging that contains PFAS.

The FDA did not immediately respond to questions from The Hill about this or about how large the existing stockpile is that restaurants may still be going through.

“The major source of dietary exposure to PFAS from food packaging like fast-food wrappers, microwave popcorn bags, take-out paperboard containers and pet food bags is being eliminated,” Jones said in a written statement.

Testing has identified PFAS in food packaging, including packaging used by major fast food chains.

The agency said that Wednesday’s announcement means manufacturers have fulfilled a voluntary commitment they previously made not to sell wrappers that contain certain types of PFAS.

Melanie Benesh, vice president of government affairs of the Environmental Working Group, a health and environmental advocacy organization, said in a written statement that the action is a “a step forward” but that it also “falls short.”

“The clock is ticking, and until June 2025, PFAS-laden products will continue to line store shelves. It’s time for consumers to demand more than half-measures and stand up against toxic substances in their food,” she said.

https://thehill.com/policy/energy-environment/4495796-grease-proof-food-packaging-containing-forever-chemicals-no-longer-being-sold-fda/



morganism

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Re: Persistent chemical pollution
« Reply #67 on: March 01, 2024, 09:33:33 PM »
Texas farmers claim company sold them PFAS-contaminated sludge that killed livestock

Two ranches also allege biosolids with ‘forever chemicals’ ruined crops, polluted drinking water and left their properties worthless

A Texas county has launched a first-of-its-kind criminal investigation into waste management giant Synagro over PFAS-contaminated sewage sludge it is selling to Texas farmers as a cheap alternative to fertilizer.

Two small Texas ranches at the center of that case have also filed a federal lawsuit against Synagro, alleging the company knew its sludge was contaminated but still sold it. Sludge spread on a nearby field sickened the farmers, killed livestock, polluted drinking water, contaminated beef later sold to the public and left their properties worthless, the complaint alleges.

The PFAS levels independent testing found on the farm were “shockingly high”, said Kyla Bennett, policy director for the Public Employees for Environmental Responsibility nonprofit, which is assisting in the analyses.

The farms’ drinking water was found to be contaminated at levels over 65m times higher than the federal health advisory for PFOS, one kind of PFAS compound, a Guardian calculation indicates, and meat was as much as 250,000 times above safe levels, the lawsuit alleges.

The complaint alleges the families will likely have to abandon their ranches from which they sell livestock that are later used for beef production.
(snip)
Sewage sludge is produced when wastewater treatment plants clean sewer system water. Disposal of the industrial waste is highly expensive, and the Environmental Protection Agency (EPA) allows it to be spread on cropland as “biosolid” fertilizer because it is also high in plant nutrients.

Regulators in Maine and Michigan have found PFAS in every sample they have tested, as did a 2001 federal review of the nation’s sewage sludge. Crops can uptake the chemicals from the soil, and the chemicals also can end up in dairy, beef, and other agricultural products at levels the EPA states are dangerous to humans.

In recent years, biosolids have sickened farmers, destroyed their livelihoods and contaminated food across the nation. Maine became the first state to ban biosolids after it found highly contaminated crops or water on at least 73 farms at where sludge had been spread. The state recently established a $70m fund to bail out impacted farmers.

The sludge spread near the Grandview, Texas farms came from the city of Fort Worth’s wastewater treatment facility, about 30 miles north. Sludge was spread on a crop field across the street from the plaintiffs’ farms in late 2022, and the highly mobile chemicals migrated to their properties, the suit alleges.

Soon after, virtually all fish died in a pond from which the family ate what it caught. Testing showed catfish with PFOS levels in their blood as high as 74,000 ppt for PFOS – a level 30,000 times above the dosage at which humans may get sick from consuming.

Around 10 cows and several horses on one farm have died without explanation since the sludge was spread. Testing of a stillborn calf liver found levels as high as 613,000 ppt.

Among other health issues farmers say they have experienced since the sludge was spread are high blood pressure, respiratory problems, cardiac issues, generalized pain, skin irritations and one farmer grew a mass on her thoracic spine that threatens to leave her paralyzed.

Testing of drinking water in the two properties’ wells found levels as high as 268,000 parts per trillion (ppt), far above the .004 ppt limit for PFOS.

Results from testing of the farmers’ blood has yet to be returned.

A criminal case may prove difficult because there are very few laws around sludge – the EPA only requires monitoring for nine heavy metals. Meanwhile, there are still no legal limits in place for PFAS in food and water.
(more)

https://www.theguardian.com/environment/2024/mar/01/texas-farmers-pfas-killed-livestock

morganism

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Re: Persistent chemical pollution
« Reply #68 on: March 01, 2024, 09:58:21 PM »
Forever chemicals reach extraordinary levels in wildlife at Holloman Air Force Base

(...)
The study focused on the area around Holloman Lake, situated between Holloman Air Force Base and White Sands National Park, in the middle of the vast, dry Tularosa basin. The lake is part of a system of waste-water catchment ponds that the Air Force created.

"Because these large wetlands are the only ones in the region, they are immensely attractive to wildlife," said MSB Director and Professor of Biology Christopher Witt, and the lead author of the study.

"Holloman is one of the three most important wetlands in New Mexico for migratory waterbirds —over 100 species and tens of thousands of individuals use these habitats annually," Witt explained. "The wetlands are also heavily used by people for recreation and hunting."

The leading cause of contamination is thought to be the fire-fighting foam that was deployed over decades by the U.S. Air Force. The foam contained a mix of toxic PFAS that have since been phased out of manufacturing. Starting around 1970, the foam was widely used for training exercises at military installations. At Holloman A.F.B., runoff flowed into the waste-water catchments.

"PFAS compounds are highly stable, so they just accumulated there in the water and mud," said Research Associate in the MSB Division of Mammals and Research Professor in the Department of Biology Jean-Luc Cartron, a co-author on the study. "These substances also bind to proteins, so they were easily taken up by living creatures and then passed up the food chain."

To understand PFAS movement through the food web at Holloman Lake, the research team conducted over 2000 measurements, testing for the various compounds in different species and tissue types. The team focused on aquatic birds because of their heavy exposure to contaminated water and because they are sought after by hunters.

A set of desert rodents from the surrounding area was also tested because they would not be directly exposed to the water; thus, their potential contamination would reveal other avenues of PFAS movement.

Remarkably, the team found that both aquatic and terrestrial species tended to be heavily contaminated.

https://phys.org/news/2024-02-chemicals-extraordinary-wildlife-holloman-air.amp

Extraordinary levels of per- and polyfluoroalkyl substances (PFAS) in vertebrate animals at a New Mexico desert oasis: Multiple pathways for wildlife and human exposure, Environmental Research (2024). DOI: 10.1016/j.envres.2024.118229

morganism

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Re: Persistent chemical pollution
« Reply #69 on: April 10, 2024, 12:19:46 AM »
Trump appointees barred EPA staff from warning Senate about ‘forever chemical’ loophole:
Internal staff messages

Trump administration officials barred experts from warning legislators that they were about to write a major environmental loophole into law, Environmental Protection Agency (EPA) staffers alleged in newly revealed internal communications. 

The loophole, arising from a clause in the 2020 National Defense Authorization Act (NDAA), enabled many companies to avoid disclosing releases of toxic “forever chemicals” to the EPA.

Internal EPA correspondence obtained by The Hill shows that career staff members attempted to make Congress aware of the issue, but they believe their efforts were rebuffed by political appointees.

One employee lamented that career staff “had tried to tell” the Senate about the problem, but he could not get approval to do so.   

The clause at issue, written by the Senate Environment and Public Works Committee (SEPW), said on Jan. 1, 2020, some of the chemicals — also known as PFAS — must be included in the EPA’s reporting database for toxic chemical releases: the Toxics Release Inventory (TRI).   

But while the clause specified an annual reporting threshold for the compounds, it did not indicate whether Congress intended to deem them “chemicals of special concern,” as opposed to the baseline “standard chemical” label.   

Without the stricter designation, polluters could hide their discharges under an exemption intended for chemicals released in small proportions, called “de minimis” concentrations.

Some EPA experts wanted to point this out to Senate staffers but said they were blocked from doing so. 

In August 2019, EPA career official David Turk wrote that his team “noticed some nuances that we had not considered previously that might be worth raising to [Senate] staff.”

Turk, head of the data-gathering and analysis division within the EPA’s Office of Pollution Prevention and Toxics (OPPT), expressed concern that under the NDAA as drafted, companies would be able to get out of reporting their PFAS discharges if they only made up a small percentage of the total discharge. 

“Note that in contacting SEPW staff, we do not plan to take a position on this issue, but rather would like to convey a consideration that we had failed to raise previously,” Turk wrote.

His colleague Daniel Bushman, who at the time served as TRI petitions coordinator and chemical list manager, added that “the fix could be as simple as the bill just saying to add PFAS to the list of chemicals of special concern with a 100 pound reporting threshold.”

Known for their persistence in the body and the environment, PFAS, or per- and polyfluoroalkyl substances, have been linked to cancers and other serious illnesses. They are present in household items such as nonstick pans, cosmetics and waterproof apparel, and in certain types of firefighting foam.

With no direction otherwise from the NDAA, the EPA’s toxics branch codified 172 types of PFAS as standard chemicals and thereby opened the reporting loophole — publishing an initial version of the rule in May 2020 and finalizing it a month later. 

Under this classification, if levels of PFOA, a particularly toxic type of PFAS, constituted less than 0.1 percent of a given mixture, or if those of the other 171 kinds of the toxic compounds were below 1 percent, sites would be exempt from disclosing their discharge. Given that even unsafe levels of PFAS generally occur in comparatively tiny quantities, the classification meant that hardly any facilities would need to file a report. 
Bureaucratic breakdown

EPA experts from the Toxics Release Inventory Program had recognized the problem nearly a year before — but found themselves talking to a brick wall built by the Trump administration, according to the internal correspondence. 

The experts recalled trying to inform the Senate committee that the language they were incorporating would not likely lead to stricter PFAS release reporting. 

But these messages apparently never reached their intended recipients.

“Starting in late July 2019 we became aware of this issue and tried to raise it with Michal on multiple occasions,” Turk wrote in a June 10, 2020, email chain.

Turk was referring to Michal Freedhoff, who at the time served as minority director of oversight — a Democratic staffer — for the Senate committee. 

That same day in 2020, Turk made similar remarks to another colleague, Stephanie Griffin, noting that “SEPW staff is pissed that we didn’t tell them about the whole chemicals of special concern issue.” 

“We had tried to tell them,” he continued. “It’s all very awkward.”

Asked by Griffin where the breakdown in communication occurred, Turk said that it was “initially, Mark Hartman. And then Nancy Beck.” 

Mark Hartman, the OPPT’s deputy director of programs, is a career official. Nancy Beck was a Trump appointee who served as deputy and then principal deputy assistant administrator of the EPA’s Office of Chemical Safety and Pollution Prevention (OCSPP), which houses the OPPT. Prior to taking on the EPA role, Beck worked for five years as an executive at the American Chemistry Council, a chemical industry lobbying group.     

In his exchange with Griffin, Turk then recounted a situation in which he and his colleagues were blocked from sharing the issue with the Senate committee.

“Then we finally did get approval to include it in materials to send to Nancy that she might then send to SEPW, which we knew she wouldn’t send to them,” Turk added.

The “awkwardness” Turk referred to stemmed from an email sent earlier that day from Freedhoff to Sven-Erik Kaiser of the EPA’s Office of Congressional and Intergovernmental Relations, expressing shock that the May prepublication labeled PFAS as standard chemicals. The designation, she noted, could make PFAS “eligible for the de minimis concentration exemption.”

“To get around TRI reporting for a listed PFAS chemical, all one would need to do is dilute the 100 lbs in 10,000 lbs of something else,” Freedhoff wrote. “This is not what Congress intended — we intended for reporting to occur for all releases that exceeded 100 lbs.”

She stressed that the purpose of the NDAA clause “was certainly NOT to allow an entity to avoid reporting in the first place.”   

A significant portion of the June 11 communications among Turk and his colleagues were redacted under Freedom of Information Act procedures. But one visible portion affirmed Freedhoff’s assertions that EPA staffers never warned her that the NDAA language could prevent PFAS from being listed as chemicals of special concern. 

“We did not have direct interactions with Michal and did not control the delivery of information to Michal,” Turk added. “It appears that our messages on the topic never did reach her.” 
Slipping through the cracks

Correspondence from 2019 shows that career EPA staffers made multiple attempts to warn Freedhoff about the loophole.
(more)

https://thehill.com/business/4583687-epa-forever-chemicals-pfas-loophole-trump-appointees-barred-staff-warning-senate-internal-messages/


Freegrass

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Re: Persistent chemical pollution
« Reply #70 on: April 19, 2024, 03:14:34 PM »
Ocean spray emits more PFAS than industrial polluters, study finds

https://www.theguardian.com/environment/2024/apr/19/ocean-spray-pfas-study

Quote
“We thought PFAS were going to go into the ocean and would disappear, but they cycle around and come back to land, and this could continue for a long time into the future,” he said.

90% of the world is religious, but somehow "love thy neighbour" became "fuck thy neighbours", if they don't agree with your point of view.

WTF happened?

kassy

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Re: Persistent chemical pollution
« Reply #71 on: April 19, 2024, 05:28:41 PM »
On behalf of ocean spray i would like to add that all the PFAS came from the industrial polluters.  ;)
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morganism

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Re: Persistent chemical pollution
« Reply #72 on: April 19, 2024, 11:31:48 PM »
Underestimated burden of per- and polyfluoroalkyl substances in global surface waters and groundwaters

https://www.nature.com/articles/s41561-024-01402-8

Per- and polyfluoroalkyl substances (PFAS) are a class of fluorinated chemicals used widely in consumer and industrial products. Their human toxicity and ecosystem impacts have received extensive public, scientific and regulatory attention. Regulatory PFAS guidance is rapidly evolving, with the inclusion of a wider range of PFAS included in advisories and a continued decrease in what is deemed safe PFAS concentrations. In this study we collated PFAS concentration data for over 45,000 surface and groundwater samples from around the world to assess the global extent of PFAS contamination and their potential future environmental burden. Here we show that a substantial fraction of sampled waters exceeds PFAS drinking water guidance values, with the extent of exceedance depending on the jurisdiction and PFAS source. Additionally, current monitoring practices probably underestimate PFAS in the environment given the limited suite of PFAS that are typically quantified but deemed of regulatory concern. An improved understanding of the range of PFAS embodied in consumer and industrial products is required to assess the environmental burden and develop mitigation measures. While PFAS is the focus of this study, it also highlights society’s need to better understand the use, fate and impacts of anthropogenic chemicals.

kassy

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Re: Persistent chemical pollution
« Reply #73 on: April 23, 2024, 10:52:40 AM »
Fresh and frozen imported strawberries highly contaminated with pesticides, report say


Some fresh, frozen and canned nonorganic fruits and vegetables are contaminated with concerning levels of pesticides, according to an investigation by Consumer Reports, a nonprofit consumer advocacy organization that provides product reviews and ratings for its subscribers.

Some of the highest levels of pesticides were found in produce imported into the United States, according to the report released Thursday. Sixty-five of 100 samples of the most contaminated produce were imported, with 52 of those samples originating from Mexico.

The majority of the highly contaminated imports were strawberries, typically the frozen variety, the report said. Because they grow low to the ground and are therefore more accessible to bugs, strawberries often top lists of foods contaminated with insecticides.

Imported and domestic green beans also tested high for pesticides, even samples that were labeled organic, “the only organic food we found with significant levels of pesticides,” said James Rogers, director of food safety research and testing at Consumer Reports.

Nearly all the tested green beans were contaminated with acephate, an organophosphate insecticide that is considered a “possible human carcinogen.” The US Environmental Protection Agency prohibited the chemical for use on green beans in 2011.

more:
https://edition.cnn.com/2024/04/18/health/imported-produce-pesticides-wellness/index.html
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