As a worst case, the quantity of contaminated dusts deposited on the ground during sowing at a maximum of 5 m distance from the edge of the field should be used. The distance was chosen based on the previous results of field studies (APENET, 2010) where the amount of the AIs deposited on the ground during sowing at 5, 10, 20 m distances from the field’s edge was measured and a decline in pesticide concentration was observed as distance increased (APENET, 2009, 2010). The dose of AI deposited on the ground was measured in field studies following the indication of the agricultural industry in agribusiness field trials, which in turn were taken over from a methodology designed to study liquid pesticide drift (BBA, 1992; APENET 2009, 2010).