S.L. 549.78 чл. 3Stack height. S.L. 549.59

(1) Waste gases from combustion plants shall be discharged in a controlled way by means of a stack, containing one or more flues, the height of which is calculated in such a way to safeguard human health and the environment.

(2) The minimum stack height shall be calculated using the dispersion modelling software and procedures deemed appropriate by the competent authority.

(3) For combustion plants permitted after 07 January 2013, the minimum stack height which shall be established during the initial permitting process, shall be such that the contribution from these combustion plants does not exceed 3% of the limit values in Annex 7 of the Ambient Air Quality Regulations, for the pollutants specified therein.