How safe are artificial turf fields?

I know there have been lots of discussions over the years as to what is safer to play on real grass or artificial turf. Lots of talk about the newer artificial surfaces being just as safe as real grass. But all those discussions were largely based on the difference between the two as they related to injuries and wear and tear on the body.

In some of the discussions over the Argos moving to BMO on soccer boards there have been some suggestions that might mean needing to return to an artificial surface there eventually if the Argos end up chewing up the real grass. Now some of the emotional arguments against that on soccer boards have been silly but some have caused me to pause with concern.

Apparently there may be problems with all those black old tire bits that are embedded into artificial fields with some suggesting they may be causing cancer - especially among soccer goalies who are in constant contact with the stuff with their diving saves - hundreds a week between games and practices. There seems to be some evidence that there is a spike in cancer rates that may be related to their exposure to all the carcinogens that they know are in tires.

Should that not be raising some alarm bells among football players who play on it all the time and like goalies in soccer are often in direct contact when involved with tackles and blocks? Here is a link to one article that has me wondering how safe are these new artificial turf fields and should more studies be done on them and their potential harm they may be causing.

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Soccer coach Amy Griffin was in a Seattle hospital visiting a young goalie who was receiving chemotherapy when a nurse said something that made the hair on Griffin's neck stand up.

It was 2009. Two young female goalies Griffin knew had been diagnosed with non-Hodgkin lymphoma. Griffin, associate head coach for the University of Washington's women's soccer team, had started to visit the women and other athletes in local hospitals, helping them pass the time during chemo with war stories from her three decades of coaching.

That day, the nurse looked down at the woman Griffin was sitting with and said, "Don't tell me you guys are goalkeepers. You're the fourth goalkeeper I've hooked up this week."

Later, the young woman with the chemo needle in her arm would say, "I just have a feeling it has something to do with those black dots."

Artificial turf fields are now everywhere in the United States, from high schools to multi-million-dollar athletic complexes. As any parent or player who has been on them can testify, the tiny black rubber crumbs of which the fields are made -- chunks of old tires -- get everywhere. In players' uniforms, in their hair, in their cleats.

But for goalkeepers, whose bodies are in constant contact with the turf, it can be far worse. In practices and games, they make hundreds of dives, and each plunge sends a black cloud of tire pellets into the air. The granules get into their cuts and scrapes, and into their mouths. Griffin wondered if those crumbs - which have been known to contain carcinogens and chemicals - were making players sick.

"I've coached for 26, 27 years," she said. "My first 15 years, I never heard anything about this. All of a sudden it seems to be a stream of kids."

Since then, Griffin has compiled a list of 38 American soccer players -- 34 of them goalies - who have been diagnosed with cancer. At least a dozen played in Washington, but the geographic spread is nationwide. Blood cancers like lymphoma and leukemia dominate the list.

No research has linked cancer to artificial turf. Griffin collected names through personal experience with sick players, and acknowledges that her list is not a scientific data set. But it's enough to make her ask whether crumb rubber artificial turf, a product that has been rolled out in tens of thousands of parks, playgrounds, schools and stadiums in the U.S., is safe for the athletes and kids who play on it. Others across the country are raising similar questions, arguing that the now-ubiquitous material, made out of synthetic fibers and scrap tire -- which can contain benzene, carbon black and lead, among other substances -- has not been adequately tested. Few studies have measured the risk of ingesting crumb rubber orally, for example.

NBC's own extensive investigation, which included a review of the relevant studies and interviews with scientists and industry professionals, was unable to find any agreement over whether crumb turf had ill effects on young athletes, or even whether the product had been sufficiently tested.

The Synthetic Turf Council, an industry group, says that the evidence collected so far by scientists and state and federal agencies proves that artificial turf is safe.

"We've got 14 studies on our website that says we can find no negative health effects," said Dr. Davis Lee, a Turf Council board member. While those studies aren't "absolutely conclusive," he added, "There's certainly a preponderance of evidence to this point that says, in fact, it is safe."

Environmental advocates want the Environmental Protection Agency and the Consumer Product Safety Commission to take a closer look. While both the CPSC and the EPA performed studies over five years ago, both agencies recently backtracked on their assurances the material was safe, calling their studies "limited." But while the EPA told NBC News in a statement that "more testing needs to be done," the agency also said it considered artificial turf to be a "state and local decision," and would not be commissioning further research.

Good read Travel but just want to remind you of the age old fallacy of confusing cause and effect. :wink:

[url=] ... causation/[/url]

There would need to be a lot of research before any conclusions could be made on this. But no question, always something to think about.

This seems like a good recent peer-reviewed article:

Environmental and health impacts of artificial turf: a review.

Cheng H(1), Hu Y, Reinhard M.

Author information:
(1)State Key Laboratory of Organic Geochemistry Guangzhou Institute of
Geochemistry, Chinese Academy of Sciences Guangzhou 510640, China.

With significant water savings and low maintenance requirements, artificial turf
is increasingly promoted as a replacement for natural grass on athletic fields
and lawns. However, there remains the question of whether it is an
environmentally friendly alternative to natural grass. The major concerns stem
from the infill material that is typically derived from scrap tires. Tire rubber
crumb contains a range of organic contaminants and heavy metals that can
volatilize into the air and/or leach into the percolating rainwater, thereby
posing a potential risk to the environment and human health. A limited number of
studies have shown that the concentrations of volatile and semivolatile organic
compounds in the air above artificial turf fields were typically not higher than
the local background, while the concentrations of heavy metals and organic
contaminants in the field drainages were generally below the respective
regulatory limits. Health risk assessment studies suggested that users of
artificial turf fields, even professional athletes, were not exposed to elevated
risks. Preliminary life cycle assessment suggested that the environmental impacts
of artificial turf fields were lower than equivalent grass fields. Areas that
need further research to better understand and mitigate the potential negative
environmental impacts of artificial turf are identified.

Environ Sci Technol. 2014 Feb 18;48(4):2114-29. doi: 10.1021/es4044193. Epub 2014
Feb 6.

PMID: 24467230 [PubMed - indexed for MEDLINE]

More from the article linked above. It may be nothing - but I think there is enough there for some concern and there should be more study. Especially with so many school football fields now going with artificial surfaces with all that old tire infill.

Tens of thousands of different tires from different brands may be used in one field. According to the EPA, mercury, lead, benzene, polycyclic aromatic hydrocarbons, and arsenic, among several other chemicals, heavy metals, and carcinogens, have been found in tires.

Darren Gill, vice president of marketing for FieldTurf, a prominent turf company, said that those ingredients might worry consumers, but the manufacturing process ensures that their product is safe.

"If you look at the ingredients that go into a car tire, some people take those ingredients and turn them into health concerns," Gill said. "But after the vulcanization process, those ingredients are inert."

Industry leaders say while they encourage additional research, studies have shown that the substances found in crumb rubber are not at levels high enough to be at risk to children or athletes.

"There are certainly chemicals in small amounts [in turf] as in many other things," said Lee, of the Synthetic Turf Council. "You could evaluate most any material out there and you're going to find at some level, some chemical that might cause concern."

"The levels as they exist in tires, ground up tires, are very, very low," he added. "The EPA has not found adverse health effect. Several state organizations have investigated it quite thoroughly."

Existing research has attempted to measure the risk of exposure to harmful chemicals through the inhalation of gasses and particulate matter, as well as skin contact.

Studies have found that crumb rubber fields emit gases that can be inhaled. Turf fields can become very hot -- 10 to 15 degrees hotter than the ambient temperature - increasing the chances that volatile organic compounds (VOCs) and chemicals can "off-gas," or leach into the air.

One study performed by the state of Connecticut measured the concentrations of VOCs and chemicals in the air over fields. In addition to VOCs such as benzene and methylene chloride, researchers identified various polycyclic aromatic hydrocarbons (PAHs).

The report concluded that "the use of outdoor and indoor artificial turf fields is not associated with elevated health risks," but that more research was needed to better understand chemical exposures on outdoor fields during hot weekends and in indoor facilities, which showed higher levels of chemicals in the air.

Other studies have looked at whether run-off from crumb rubber turf is harmful to aquatic life, or whether the rate of injury on turf is lower than on natural grass.

Few studies have looked at the issues unique to goalkeepers - whether ingesting the particles by mouth or absorbing them into the body through cuts and scrapes is dangerous.

While many studies conclude that the fields studied do not present acute health risks, they often add the caveat that more research should be conducted.

One, published in 2013 in the scientific journal Chemospheres, which analyzed rubber mulch and rubber mats, concluded that, "Uses of recycled rubber tires, especially those targeting play areas and other facilities for children, should be a matter of regulatory concern."
A 2006 Norwegian study evaluated inhalation, ingestion and skin exposure to crumb rubber in indoor fields. Researchers identified VOCs such as xylene, acetone and styrene, in the air above the fields. The study determined that inhalation of such compounds would not cause "acute harmful effects" to health, but that it was "not possible…to carry out a complete health risk assessment." Researchers also concluded that oral exposure to artificial turf would not cause increased health risk.
Another 2013 study attempted to measure ingestion, inhalation and dermal exposure risk to users, and determined that the fields presented little risk. But researchers identified lead in the turf tested, including a "large concentration" of lead and chromium in one sample. "As the turf material degrades from weathering the lead could be released, potentially exposing young children," the report states.
According to Dr. Joel Forman, associate professor of pediatrics and preventive medicine at New York's Mt. Sinai Hospital, in all these studies, data gaps make it difficult to draw firm conclusions.

"None of [the studies] are long term, they rarely involve very young children and they only look for concentrations of chemicals and compare it to some sort of standard for what's considered acceptable," said Dr. Forman. "That doesn't really take into account subclinical effects, long-term effects, the developing brain and developing kids."

Forman said that it is known that some of the compounds found in tires, "even in chronic lower exposures" can be associated with subtle neurodevelopmental issues in children. "Those are always suspect," he said.

"If you never study anything," said Dr. Forman, "you can always say, 'Well there's no evidence that's a problem,' but that's because you haven't looked. To look is hard."

"I would like to see some more research," he concluded.

It is unlikely, however, that further research will be conducted by federal agencies.

In 2008, tests performed by New Jersey found lead on three artificial turf fields. The results spurred media coverage and concern across the country.

The Consumer Product Safety Commission, the federal agency in charge of regulating consumer products, tested turf samples. While the tests detected lead in the synthetic grass blades, the agency announced that turf was safe to play on.

That same year, an official from a regional EPA office wrote to three agency offices in D.C., including the Office of Children's Health Protection, and recommended that the EPA undertake extensive testing, according to documents obtained by the watchdog group PEER. "My staff has reviewed the published research on the safety of tire crumb," wrote the official, "and has found information suggesting that children's chronic, repeated exposure to tire crumb could present health hazards. However, sufficient data to quantify toxicological risks from tire crumb exposure are not available."

Shortly after, the EPA tested samples from two artificial turf fields and one playground. The concentrations of VOCs and other chemicals researchers found presented a "low level of concern," the agency reported, but it declared that due to the "very limited nature" of the study and the diversity of crumb material, it was "not possible to reach any more comprehensive conclusions without the consideration of additional data."

While the industry cites both studies as evidence that rubber crumb is safe, in response to complaints filed by PEER, both the CPSC and the EPA declared last year that their studies were limited in scope. In its press release, the CPSC wrote, "The exposure assessment did not include chemicals or other toxic metals, beyond lead."

Since its initial tests, according to the CPSC, the agency has worked with the industry to develop voluntary standards for lead content.

The EPA refused repeated requests from NBC News for an interview. It said in a statement that the agency "does not believe that the field monitoring data collected provides evidence of an elevated health risk resulting from the use of recycled tire crumb in playgrounds or in synthetic turf athletic fields."

"The agency believes that more testing needs to be done," said the agency in a separate statement, "but, currently, the decision to use tire crumb remains a state and local decision."

When NBC News first contacted the EPA in 2013, Enesta Jones, an agency spokesperson said that in 2010, after a meeting with state and federal officials, "EPA determined that this is not an issue."

The agency does not have plans to conduct further studies, but is currently working on a "summary" of available research.

New Controversy

Others across the country say their questions about crumb rubber turf remain unanswered.

Some cities have elected to scrap crumb rubber turf in favor of alternative infill. The New York City Parks Department stopped installing crumb rubber turf in 2008 followed the next year by the Los Angeles Unified School District.

In Maryland, a group called the Safe Healthy Playing Fields Coalition has been organizing against a bill that would allocate state funds to build artificial turf fields. The group has also been trying to advance legislation that would require warning signs to be placed around artificial turf fields.

For at least four years, citizens and advocacy groups concerned about crumb rubber turf have been fighting against the installation of artificial fields in San Francisco's Golden Gate Park.

Early this year, a judge dismissed a suit against the city that alleged the environmental impact report conducted by the city violated California law by failing to disclose the risks associated with turf. The case is currently being appealed. Two turf-related propositions are on the ballot for the city's upcoming elections. One would bar the city from installing the fields in Golden Gate Park, and the other would give wider latitude to the city's Parks and Recreation department to install similar projects.

Those concerned about turf suggest using alternative in-fill for artificial fields, such as coconut fiber and cork, or prohibiting toddlers or other young children from using fields and playgrounds with crumb rubber.

An environmental group called the Center for Environmental Health (CEH) led litigation against several artificial turf companies in California for violations of Proposition 65, a state law that prohibits companies from knowingly exposing consumers to specific chemicals and heavy metals, such as lead, without clear warning. In a series of settlements, the companies agreed to reduce the amount of lead in their products sold in California and agreed to replace fields under certain conditions.

Caroline Cox, research director for CEH, said that while studies haven't definitively established that crumb rubber turf is harmful, the surface contains chemicals known to be hazardous.

"We know they're there," said Cox. "The point is, let's go with better alternatives instead of spending years and millions of dollars establishing harm. If there's a better way to do this, let's just do it."

Follow NBC News Investigations on Twitter and Facebook.

"Turf fields come with a number of real risks and a number of real benefits," said Dr. Joel Forman. "And every community … has to kind of weigh the different risks and benefits."

Looking for answers

When Amy Griffin first started using turf -- her team practices on it throughout the year -- she thought it was a "win-win."

Now, her team collects paper cups of crumb rubber on each field they play on, handing them off to her so she can ship the granules to a lab to be tested.

"I'm looking for answers, because I'm not smart enough to come up with them on my own," Griffin said. "I would love someone to say, 'We've done some tests and we've covered all of our bases. … And yes, it's safe.' That would be awesome. … I would love to be proved wrong."

Another good read Travel. Also this from the EPA with additional links:

The Use of Recycled Tire Materials on Playgrounds & Artificial Turf Fields

Very safe

Yea, could you knock off the spam please?

I'm trying to fill the whole front screen, to show there is no mod's from the league. Now I have to start again, thanks