Hey no, its completely clean, I got into the tanks and they have nothing in them, no smell which is very good. I might get some daytime ones before it goes. Im back in work next week so Ill get some them.
The site on the left hand side of Kings weston Lane is advertised as a development site for industrail units the bit where I am based is being cleaned up big time, fresh topsoil to hide all the contamination.