Madison

WA Legislature: Let's become first state to ban toxic asphalt sealants

The Washington House of Representatives this week passed and sent to Gov. Christine Gregoire legislation to make Washington the first state in the nation to ban toxic asphalt sealants that are ending up in people’s homes as well as polluting stormwater runoff and waterways.

Meanwhile, a federal scientist on Thursday briefed Congressional aides and others about threats to the environment and public health from sealing of driveways, parking lots and playgrounds with coaltar, a byproduct of steelmaking. The briefing was co-sponsored by U.S. Rep. Lloyd Doggett, D-Texas, who is seeking a nationwide ban on the toxic sealants.

The Washington State legislation and Doggett’s drive for a nationwide ban flowed from studies by the U.S. Geological Survey, which showed that constituents of the toxic sealants are increasing in many waterways, while levels of most pollutants are declining.

A 2009 Geological Survey study identified chemicals associated with the coaltar sealants in house dust at levels that worried researchers because they could contribute to longterm cancer risks, especially in young children who crawl around in – and accidentally ingest – the toxic dust.

InvestigateWest and msnbc.com partnered last year to publish the first major national story examining the toxic sealants.

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