About battle creek MODEL
since i cannot delete the bad world portal faces in modeldoc you shold convert to editable mesh in hammer then delete all the error faces. the water texture does have collision so you will walk on the water. this will be fixed in the map version of this port. this is just a resource (all textures are original ports except for the coloured lights, those didnt have references) the scale isnt perfect but i tried to scale it reasonably to sandbox