In the main, he's talking pish. Yes, now they can build as the situation has changed over the years & of course Grangemouth has stopped operating as a refinery. But the blast zone was 100% an issue and a reason they didn't build the 4th stand originally or before now.
Here's mention of 'the blast zone' in a BBC interview with ex-Falkirk chairman http://news.bbc.co.uk/sport1/hi/foot...rk/4387279.stm