To Recycle or Not to Recycle Asbestos-containing Recycled Asphalt Pavement (RAP): That is the Question

In August 2008, as part of the City of Calgary's commitment to providing a safe work environment for its workers and contractors, The City requested that Golder Associates Ltd. (Golder) conduct an occupational hygiene assessment to determine the potential for worker exposure to asbestos during the various processes of The City Roads Business Unit that impact asbestos-containing asphalt and the use of recycled asphalt pavement (RAP). The final report, Asbestos in Asphalt, Calgary, Alberta, was submitted to the City of Calgary Roads Business Unit on November 27, 2008. Similar to other municipalities in North America, The City of Calgary incorporated chrysotile asbestos fibres (1-2 percent by weight) into their asphalt pavement to improve both durability and lifespan. From the mid-1960s to the mid-1980s, the asbestos-containing asphalt pavement installed by The City was primarily used as a surfacing material on major arterial roads. Since the mid-1980s, as part of pavement resurfacing, these roadways have been planed and recycled asphalt pavement (RAP) has been incorporated into new asphalt to pave various roadways around Calgary. Respecting The City of Calgary's "triple bottom line" of social, environmental and economic sustainability, the Roads business unit is committed to environmental protection and providing a safe workplace for employees, contractors and the citizens of Calgary. The City of Calgary's Roads Business Unit approached Golder in July 2008 to reassess the potential for asbestos exposure to workers during paving-related activities. The City also temporarily stopped using RAP until the outcome of this study was known.

Language

  • English

Media Info

  • Pagination: 18 p.
  • Monograph Title: 2009 Annual Conference and Exhibition of the Transportation Association of Canada - Transportation in a Climate of Change

Subject/Index Terms

Filing Info

  • Accession Number: 01149488
  • Record Type: Publication
  • Source Agency: Transportation Association of Canada (TAC)
  • Files: TAC
  • Created Date: Jan 28 2010 7:30AM