technology, yo! if all you damn primitivist hippie vegan commies would stop fighting the inevitable, then the priests of science could easily come up with the technological solution to ALL these overrated so-called "issues" you claim are impacting the environment. nano-tech and drones are the fucking answer to ALL those stupid complaints.
but seriously, i doubt anything short of drastic human depopulation - with everything that entails and implies - will really change anything. while in some scenarios it might be feasible to take some direct action, in that case i doubt you want to, if you desire to enjoy life for however long you have left. doing superfund cleanup would not be on my bucket list. or, i guess you could take action against any individuals you know to be responsible; but that wouldn't really change the environmental situation (though it might feel good as fuck).
the place i lived for many years up until recently, and where i felt more free than anywhere i could imagine in this world, happened to be less than 3 hours from los alamos (national labs). every year, the wildfires that ravaged the region would threaten the labs, and maybe 5 years ago one of the fires was actually on lanl land. while groundwater would not likely be a problem (i was at a much higher altitude), prevailing winds blew almost directly in my direction. i knew that was a risk, but it sounds like your risk is notably higher.
i think i would bail, personally. the yearly wildfire season was absolutely a factor in my leaving there, though that was because of the actual smoke impact on the health of myself and my pack, rather than the risk of los alamos going up in flames.