Yes, they have been testing and sharing with plenty of news outlets if you care enough to seek it out. The chemicals were burned off and have now dispersed, there is no more source to worry about for anything airborne. It's too bad this is an area of mostly poor, uneducated, right wingers that don't probably know much about chemistry or analytical thinking. Perhaps they could put their energy into ensuring the groundwater does not become contaminated instead of carrying on about things that don't matter, such as Joe Biden and air pollution.