What is coal-tar sealcoat?

Coal-tar sealcoat is a type of sealant used to maintain and protect driveway and parking lot asphalt pavement. Coal-tar sealcoat typically contains 20 to 35% coal tar pitch, a byproduct of the steel manufacturing industry, which is 50% or more PAHs by weight. (Source: epa.gov)

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1. What is coal-tar sealcoat?
2. What are PAHs in the environment?
3. What state legislative action has been taken addressing PAHs from coal-tar sealcoat?
4. What City action prohibits high levels of PAH?
5. I am a resident. What action do I need to take?
6. I am a contractor. What action do I need to take?
7. I am a business owner. What action do I need to take?
8. What are some alternatives to coal-tar sealant?
9. Does this mean that I cannot replace my driveway with asphalt?
10. Does this mean that I cannot reseal my own driveway?