Irwin, R. J. (n.d.). ENVIRONMENTAL CONTAMINANTS ENCYCLOPEDIA July 1 … – fws.gov. Retrieved from http://www.fws.gov/caribbean/ES/PDF/Contaminants/kerosene.pdfNational Park Service Water Resource Divisions, Water Operation Branch, 1201 Oakridge Drive, Suite 250, Fort Collins, Colorado 80525
In the research paper, “Environmental Contaminants Encyclopaedia Asphalt Entry”, Irwin (1997) states in the General Hazard/Toxicity Summary that the main hazard associated with asphalt is from the polycyclic aromatic hydrocarbon (PAH) and alkyl PAHs in asphalt that can move into the ecosystem from the breakdown of asphalt. Asphalt contains many toxic, carcinogenic compounds and leaching harmful PAH compounds which have been documented to be found in water eco systems. Research indicates that asphalt products are also toxic to humans. The Hazards include inhalation of compounds in heated or fresh asphalt as well as ingestion of PAHs entering the food chain as the result of the breakdown of asphalt or via a drinking water pathway, either the contamination of the groundwater used for drinking. The key point of this part of the paper states that asphalt poses risks to both ecologically and humans. This research paper is extremely useful as it supports our main intention to recycle asphalt. Since asphalt is main common material used for roads, we cannot avoid the usage, however, we can control or limit the amount that we use; until more research concludes the awareness to the industry or invention of equalling less harmful material to counter asphalt usage.
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Nicole Vale 