The present Ordinance by the Federal Minister for Agriculture and Forestry, Environment and Water Resources implements article 4 of the Immission Protection Act (BGBl. I No. 34/2003). It lays down regulations dealing with the monitoring of immission into air of harmful substances. The Federal Minister has to ensure that specified methods are used for assessing air quality in relation to each pollutant in each zone. The text consists of 39 articles divided into 9 Parts as follows: Control of limi