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Important Letter from NRCA Regarding Recent Discovery of Potential Carcinogenicity of Asphalt

Dear Member,

NRCA is actively involved in the debate about occupational exposures to asphalt emissions. In October 2011, asphalt industry representatives met in Lyon, France, as the International Agency for Research on Cancer (IARC) conducted its review of bitumen (asphalt); NRCA was invited to observe.

IARC's conclusion was "occupational exposures to oxidized bitumens and their emissions during roofing are probably carcinogenic to humans (Group 2A)." IARC has not yet made available a specific explanation of the basis for this determination. It will be one year or more before an IARC monograph addressing the subject will be published. In its news release, IARC states it found "sufficient evidence" of carcinogenicity in experimental animals and "limited" evidence in humans.

About ARCA

Established in 1969, ARCA is a dynamic and well-respected subcontractor trade association. We have grown to become one of the largest trade associations in Arizona, with over 250 members throughout the state.

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