Highlights from my perspective:
- The USGS covered an introduction to the topic with great clarity.
- The University of New Hampshire found that high PAH concentrations persist 4 years after the application of coal tar sealants.
- The Minnesota Pollution Control Agency demonstrated that the majority of PAH pollution in Minnesota area ponds are from coal tar pavement sealants. One state estimate to clean these contaminated ponds is around $1 billion.
- The City of Austin talked about their experience in both biological stream effects from coal tar pavement sealants and the enforcement of its ban since 2006. They have had 9 violators to the ban.
A copy of the webinar is currently available at this link.