… c = Q/(2500m*x*u) Examples: Example calculation x/h50a11: The emission rate of substance xx is 5.56 g/s, for the annual average at a distance of 2 km and a wind … in integer meters. A10) How are dust components specified and evaluated? For the substances pm (dust, unspecified), as (arsenic), pb (lead), cd (cadmium), ni … components "1" and "2", because the imission values of TA Luft refer to PM-10 (for substances hg and xx, the gaseous component is also included in the sum). The …