Environmental clearance for Gauge conversion and doubling should not be there unless there is a diversion in route from the original alignment.
Every ministry wants to wield maximum possible power and flex its muscle to maximum without going into the merits of cases. Inone li ne-Motto of typical government ministry in one line
"Hum hain lakeer ke Fakeer aur Likhna chahte hain tum sab ki taqdeer"