Yeah, it's worth building these tanks safely. There was tank fire last year in Bay Area after a quake: https://www.youtube.com/watch?reload=9&v=KMZjfWRXgTs Even if there is different level of risk and safety concern, and air quality regulation in rural Oklahoma vs urban CA bordering a highway, these can catch fire dramatically.

One point made when that fire occurred was that the tanks are placed in earthen basins, so that when tank fails, the flaming fuel just fills the basin, minimizing risk of spreading to neighboring tanks.