What is Acute Exposure Guideline Level (AEGL)

Bangladesh has a long history of physical planning. It started with blueprint-based master planning approach in the 1950s. Since the late 1970s, it has slowly shifted to the rational planning approach following the path laid down by the United Kingdom. Lately, infusion of the North American planning thoughts is observed. Thus, Bangladeshi physical planning never had its own identity. Structure plans are loosely tied to the other tiers of planning packages that are used for development management. Though most of the structure plans address environmental issues, lower tiers of plans often lack their reflection. Often policies are laid down based on popular belief rather than scientific evidence. To establish these arguments, the evolution of the planning practices of Bangladesh is illustrated briefly in the context of the evolution of planning theory. Additionally, environmental sensitivity of a physical plan covering one of the most ecologically sensitive and economically potential areas of Bangladesh, namely Mongla master plan (MNP) is evaluated, as an example, considering the spatial dispersion of sulfur dioxide to be discharged by the coal-fired thermal power plant at Rampal. Unfortunately, MMP failed to stand out from all the rest to prove its soundness.