The sector of sintering plants, in the European Union, is considered today one of the major potential contributors to the atmospheric release of dioxin and consequent depositions. The emissions of a plant depend on many factors: characteristics of the input, sintering process, prevention and removal of dioxin from the gaseous stream. The local impact of a plant depends also on the variability of release through diffused emissions, secondary emissions and conveyed gases, as each stream can be related to a different way of dilution into the atmosphere. The high variability of parameters that can affect the local impact from a sintering plant makes it interesting the adoption of deposimeters in order to understand the human exposure in the surroundings. The present paper refers to an Italian case-study whose deposition was measured using a deposimeter placed in a selected site. The obtained values are discussed taking into account seasonality and operativity of the plant.