Most of it will vapourize.
A high concentration of those aromatics will most likely have a huge negative health affect on any communities within proximity.
And agricultural run-off. Google "algae blooms sewage satellite" and have a look at the visualizations we can observe without models.
I find it interesting that these local communities that have such a problem with this issue are quick to totally ignore the environmental affects of the raw sewage that they've been dumping into the ocean for all these years... Pretty hypocritical if you ask me.