Under the Lens: Sealing the Science on PAHs
Unfortunately, there has been a continued rise in environmental concentrations of PAHs over the past 40 years in the United States. This is partly because we have been operating under the assumption that since there is a wide range of potential sources, the PAH problem cannot be easily addressed with one or two targeted practices. However, there is new hope to reverse the trend as recent research and experimental evidence have begun to identify a single major and primary cause of PAH pollution in aquatic sediments: tar-based pavement sealants.