Charlie-
I haven’t seen the 300-180-150m type workouts but the times do seem like intensive tempo pace for someone of Bolt’s level. I think the video below was also posted here previously and although its tough to get an accurate time, the effort and apparent speed of the runs make it seem like intensive tempo to me. How would you classify it?
http://www.youtube.com/watch?v=IglPzinau7g&feature=player_embedded