Yes, it would go to the bottom of the fuel tank, BUT (and this is a huge BUT), absolutely NOTHING currently in the fuel tank dare go to the engine. YOU MUST not only drain the tank of EVERYTHING in it, you must also make sure that the tank itself has not begun rusting, for if it has, that rusting will likely continue apace even after the bleach is removed, so you MUST remove the fuel tank from the vehicle for cleaning and inspection.
Yeah, I know, this is a horribly expensive penalty for such a simple error. But trust us on this one, don't make it very much worse by neglecting to do this right. Dropping the tank is going to cost you a few hundred bucks, and there is simply no way around that. If you don't do it right, start saving your pennies for a bill that will easily run into the thousands and perhaps even into the tens of thousands, depending on your rig.