|Photo from NASA|
The first part featured a sealant producer from Long Island that was affected by the ban there. The company had to add equipment to switch over to an asphalt-based material. They were confused on their timeline saying they only had 3 months to prepare for the new material, but actually they had about 1 year.
In a moment of transparency, the gentleman from Velvetop stated that asphalt based sealers can be just as effective as coal tar sealants if applied correctly. He went on to say that these alternative products are just as black as coal tar, but there are some challenges with applying it when drying conditions are sub-optimal. Why are coal tar sealants better in these conditions? Look at USGS's analysis of volatilization which showed massive airborne discharges of PAHs from freshly applied coal tar sealants in the first 24 hours. In other words, the product works well in low drying conditions because it is causing a toxic PAH plume above it.