No requirements, no tests. There's a bunch of stories of indoor gun ranges being horrifically contaminated, due to lead from the primer compounds when ignited +

No requirements, no tests. There's a bunch of stories of indoor gun ranges being horrifically contaminated, due to lead from the primer compounds when ignited + vaporized lead from the back of the bullet (back of the bullet is almost always exposed lead core, so you get some vaporized with the explosion). Some maintenance workers, demolition crews etc working on these buildings have had terrible, life altering exposures. I do a lot of shooting and avoid indoor ranges. They are so contaminated there are many cases of cops coming home and poisoning their kids due to contamination on clothing, shoes, etc. I personally buy "clean fire" ammo, which has no exposed lead core on the bullet, and has clean burning primers. More expensive, but I like to keep my brain healthy, and I have kids that could easily get exposed.