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Autism and Environmental Chemicals

CHEJ has been talking about the dangers of PCB’s in school lighting fixtures and how the chemical can affect children’s health. Last month, the Center for Disease Control (CDC) reported that autism spectrum disorder now affects 1 of every 88 American children — a 23% increase from 2006 and a 78% increase from 2002. CDC also reported that ADHD now affects 14% of American children.

As these disorders continue to affect more children across the U.S., researchers are asking what is causing these dramatic increases. Some of the explanation is greater awareness and more accurate diagnosis. But clearly, there is more to the story than simply genetics, as the increases are far too rapid to be of purely genetic origin.

The National Academy of Sciences reports that 3% of all neurobehavioral disorders in children are caused by toxic exposures in the environment and that another 25% are caused by interactions between environmental factors and genetics. But the precise environmental causes are not yet known.

To guide a research strategy to discover potentially preventable environmental causes, a list of ten chemicals found in consumer products that are suspected to contribute to autism and learning disabilities.

This list was published today in Environmental Health Perspectives in an editorial written by Dr. Philip J. Landrigan, director of the CEHC, Dr. Linda Birnbaum, director of the National Institute for Environmental Health Sciences (NIEHS), and Dr. Luca Lambertini, also of the CEHC.

The top ten chemicals are:
1. Lead
2. Methylmercury
3. PCBs
4. Organophosphate pesticides
5. Organochlorine pesticides
6. Endocrine disruptors
7. Automotive exhaust
8. Polycyclic aromatic hydrocarbons
9. Brominated flame retardants
10. Perfluorinated compounds

The editorial was published alongside four other papers — each suggesting a link between toxic chemicals and autism.

There are things we can do as parents as concerned taxpayer and citizens. First, is to remove chemicals in areas that children frequent. As you may know CHEJ’s Children Environmental Health Program has been working on identifying and the removal PCBs in school lighting fixtures as well as removing other environmental chemicals from children environment such as emissions near schools.

As a humane society we cannot allow this devastating neurological problem to continue to rise in our children. It is time to speak up and out about environmental chemicals and children’s health. It is time to ask our health authorities to explore where children may be being exposed and eliminate that source of exposure. This is especially true in the case of PCBs and school lighting(schools built before 1980 and had no retrofitting) since this is a win win situation. The school district can remove exposure and save money on the energy efficiency of new lighting fixture.

Our children are our future. Let’s protect them . . . our future depends on their leadership.

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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

Chicago, We have a Problem! Another School Siting Gone Bad

Since 2000, CHEJ’s Childproofing Our Communities (CPOC) campaign has been working on environmental school based issues and specifically school siting. What is school siting? School Siting is the process of where to locate a school facility. For decades this has been a contentious problem for decision makers because often where to place a school can be influenced by the budget. Decision makers have been enticed into purchasing ridiculously low cost land or property often not taking into consideration the cost to remediate or clean-up any toxic contamination. This oversight has cost school districts extra millions of dollars to clean-up site and even more because often on-going monitoring must be put in place.

There have been many examples of poor planning of where to place a school. The Belmont Learning Complex in Los Angeles was built on top of a former oil field full of explosive and toxic gases and other contaminants. The full environmental assessment was not completed until after $123 million was already put into the project. The site was them abandoned due to the health and safety concerns. A new school was built after a thorough cleanup. Over $300 million was spent on the project!

Now in Chicago there are plans to locate an elementary school on contaminated land in an industrial area. The proposed site is near a power plant and in an area already documented to have the state’s highest levels of toxic chromium and sulfates, a hazardous air pollutant and probable human carcinogen. [fusion_builder_container hundred_percent=”yes” overflow=”visible”][fusion_builder_row][fusion_builder_column type=”1_1″ background_position=”left top” background_color=”” border_size=”” border_color=”” border_style=”solid” spacing=”yes” background_image=”” background_repeat=”no-repeat” padding=”” margin_top=”0px” margin_bottom=”0px” class=”” id=”” animation_type=”” animation_speed=”0.3″ animation_direction=”left” hide_on_mobile=”no” center_content=”no” min_height=”none”][Read More]

The economic advantage that school boards hope for with the purchase of a contaminated site is rarely as beneficial as designed. Often the ones who have very little input in the process suffer the most, children. The community can have input in this process by making sure your state have some type of school siting policy. In October 2011, the EPA released its School Siting Guidelines to assist school districts in assessing environmental factors when deciding where to place a school. Although guidelines  does not pertain to existing schools, it can be used as a tool to enact a policy in your area and assess existing schools for potential environmental hazards.

Check out CHEJ’s School Siting Toolkit for additional information on how to take action on where to place a school facility in your area.

CHEJ’s Focus on Schools webpage offer resources on other children’s environmental health issues.  

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Backyard Talk

CNN Spotlights Indoor Air Quality Impact on Student Learning

An estimated 14 million American children attend public schools that are in urgent need of  extensive repair or replacement and have unhealthy environmental conditions, including poor air quality, unsafe drinking water and inadequate safety systems. This weekend, CNN will spotlight the dire condition of schools and the health hazards posed by poor indoor air quality. [Read More]

CNN’s report on indoor air quality in schools airs on Saturday, January 14 at 8 p.m., 11 p.m. and 2 a.m. ET.  The program will re-air again at the same times on Sunday, January 15.

Visit CHEJ’s Focus on Schools webpage to get more information about threats to the school environment and how you can take action.

Contact Makia Burns, CHEJ’s Childproofing Our Communities Campaign Coordinator at (703) 237-2249 x21 or mburns(at)chej.org for additional information or organizing assistance.