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Study finds risk to children from coal-tar sealants










Children living next to driveways or parking lots coated with coal tar are exposed to significantly higher doses of cancer-causing chemicals than those living near untreated asphalt, according to a study that raises new questions about commonly used pavement sealants.

Researchers from Baylor University and the U.S. Geological Survey also found that children living near areas treated with coal-tar-based sealants ingest twice as many polycyclic aromatic hydrocarbons (PAHs) from contaminated dust tracked into their homes as they do from food.

The peer-reviewed study, and other new research documenting how coal-tar sealants emit high levels of troublesome chemicals into the air, comes as several cities in the Midwest, South and East are trying to ban the products’ use on playgrounds, parking lots and driveways. Some major retailers have pulled the products from their shelves, but coal-tar sealants remain widely available elsewhere.

“There’s been a long-held assumption that diet is the major source of exposure for children,” said Peter Van Metre, a USGS scientist who co-authored the studies. “But it turns out that dust ingestion is a more significant pathway.”

About 85 million gallons of coal-tar-based sealants are sold in the United States every year, mostly east of the Mississippi River, according to industry estimates. The sealants, promoted as a way to extend the life of asphalt and brighten it every few years with a fresh black sheen, are sprayed by contractors or spread by homeowners.

During the past decade, studies have identified coal-tar sealants as a major source of PAHs, toxic chemicals that can cause cancer and other health problems. Pavement sealants made with coal tar can contain as much as 50 percent PAHs by weight, substantially more than alternatives made with asphalt.

Anne LeHuray, executive director of the Pavement Coatings Technology Council, an industry trade group, said she was reviewing the new findings.

“It appears they have some other agenda here, which is to ban coal-tar-based pavement sealants,” she said of the government scientists.

LeHuray and other industry representatives have argued that vehicle exhaust, wood smoke and grilled hamburgers are more significant sources of the toxic chemicals than coal tar.

But the latest USGS research estimates that annual emissions of PAHs from the application of coal-tar-based sealants exceed the amount from vehicle exhaust. Two hours after application, emissions were 30,000 times higher than those from unsealed pavement, one of the new studies found. Parking lots with 3- to 8-year-old sealant released 60 times more PAHs to the air than parking lots without sealant.

By Michael Hawthorne of the Chicago Tribune

The studies are published in the scientific journals Chemosphere, Atmospheric Environment and Environmental Pollution.

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Backyard Talk

For Sale: American's Health

Who’s buying? Not the advocacy groups that work tirelessly to protect people’s health and the environment, they can’t afford the purchase.

It’s the American Chemistry Council (ACC) who spent more in the fourth quarter then any quarter in recent history . . . in fact they doubled their spending.

ACC, the chief lobbying arm of the chemical manufacturing industry, spent $5.37 million that quarter, the fifth highest of any lobbying operation on Capitol Hill during that time.

ACC’s lobbying disclosure report shows they were involved in a host of issues, ranging from efforts to update chemical regulations, to EPA’s air pollution rules for boilers and incinerators, to the long-delayed health assessments of substances like bisphenol A (BPA) and formaldehyde.

Their disclosure also demonstrates it lobbied EPA on its 27-year-old IRIS assessment of dioxin. EPA was supposed to finalize the non-cancer portion of its dioxin assessment on January 31st but didn’t happen in the face of significant industry opposition. However, the agency hasn’t publicly explained the delay.

So while ACC protects and possibly even increases their profit, the American people, our children are unnecessarily expose to chemicals and face a lifetime of health problems and learning disabilities.

Yes America is for sale, and it’s time for American to stand up for everyone to stand up and say America’s Not For Sale! No More!

ACC included Sen. Frank Lautenberg’s (D-N.J.) “Safe Chemicals Act” in their efforts, which would overhaul the 1976 Toxic Substances Control Act (TSCA) and require manufacturers to prove their substances are safe before they go on the market.

For all of 2011, ACC spent almost $10.3 million, significantly more than the $8.1 million it spent the year before. Last year’s total trumps what was spent by Dow Chemical Co., which spent $7.3 million. The American Petroleum Institute, the largest trade association for the oil and gas industry, also spent far less.

These industries had record earnings last year – their shareholders are not suffering from a drop in earnings. Even though they are eating and drinking dioxin just like the rest of us, they can afford the safest foods and the best health care money can buy, unlike CHEJ’s constituency.

Although the polluters and their lobbyist have more money than most of us can imagine we can still prevail. They understand the real power of the people and cannot control that element. In fact, this is why someone sent a thug into our offices and cut our telephone and internet lines at near the peak of our fundraising and dioxin campaign organizing. Despite their efforts we delivered over 2,000 individuals and organizations from across the country to EPA representing millions of people.

It is time to exercise our collective power and put the power back in the hands of American people. However, our power can only be activated when people take step up. With the 2012 elections this year everyone has an opportunity to exercise your power. Ask candidates where they stand on your important issues and let them know they must earn your vote. This country belongs to its people not to corporations whose greed is insurmountable.

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Backyard Talk

What the Chemical Industry Doesn’t Want You To Know!

The American people will panic if they find out there is dangerous levels of dioxin in their food. That’s the argument the chemical and food industries are using to stop the release of the Environmental Protection Agency’s (EPA) scientific report on dioxin.   Really. . . do they really think people will panic rather than take steps to protect their families?  The American people didn’t panic and not place their children in vehicles when they learned that more kids are injured in auto collisions than in any other type of accident. Parents installed safety seats.

The EPA’s dioxin report has been meticulously peer reviewed and is scientifically sound.  Yet, the power of the corporations that are responsible for dioxin in our environment and food has kept this critical scientific information (over 20 years of study) from reaching the public.  Consequently, the public is unable to make personal decisions about what foods they’ll eat and how best to reduce their families’ risks.

Dioxin, a known cancer causing and endocrine-disruptor chemical, is a byproduct of combustion and various industrial processes and is found everywhere in the environment. Chlorinated dioxins are released into the air and travel great distances landing on fields, pastures and waterways from waste incineration, burning household waste and a variety of industrial processes, including smelting, chlorine paper bleaching, PVC plastics and pesticide manufacturing. When animals graze in the pastures or eat feed that has animal byproducts, they ingest dioxin which is then stored in their fat.  So when little Joey drinks his whole milk, he also ingests dioxin contained in the milk’s fat.

Ninety percent of the public’s body burden of dioxin comes primarily from animal fat in the food supply.  The Environmental Working Group has found that the amount of dioxin a nursing infant ingests daily is up to 77 times higher than the level EPA has proposed to protect the endocrine and immune systems. The fact that both breast milk and infant formula are contaminated with dioxin highlights the urgent need for EPA to release its report.  For cancer risk, the situation is also concerning because the general public is exposed to up to 1,200 times more dioxin than regulatory agencies typically consider safe.

Parents place bike helmets on their children, fasten their seat belts, and take their babies for regular checkups because they understand the risks of not taking these steps.  However, everyone is being kept in the dark when it comes to dioxin in our food.  For example, breast milk contains fairly high levels of dioxin.  Nevertheless breast milk is still the healthiest food for baby.  EPA must release this information to new mothers so they know that nursing is the healthiest option.

Whose protection is our public agencies’ priority?

Recently, there has been an increased lobbying effort by various industries to stop the release of the EPA’s dioxin report. The International Dairy Foods Association, for example, wrote EPA a letter stating, “Animal products, such as milk and dairy foods, have the highest concentrations of dioxins, albeit at levels that are only in the parts-per-million and clearly below levels that have been determined to be unsafe. However, EPA’s proposed values for evaluating dioxin, if translated publicly to a “reference dose,” would scare consumers away from our products, and this would be contrary to the government’s own dietary guidance to consume three servings of low-fat or fat-free dairy each day in order to get essential nutrients found in milk and dairy.”

Releasing the EPA’s dioxin report will help consumers make choices in food products that are low in fat content (as recommended by government’s dietary guidance) and could educate the dairy lobbyists as well since they got it wrong in their letter. Low fat and fat free products are not the big problem, because dioxin is carried into food products through the fat content.

Consumers should call their federal representatives and urge them to support the release of the EPA’s dioxin report so they can make their own decisions about what is safe.  It is time to stop assuming the American people will not understand and give them the scientific information.