Do NRMM contribute significantly to pollutant levels?
NRMM are not currently subject to as tight controls as road vehicles and investigations undertaken by the European Commission estimate that off road machinery accounts for approximately a quarter of the emissions of oxides of nitrogen and a third of PM2.5 (particles less than 2.5 micrometers in diameter) emissions of mobile sources in 2000. Oxides of nitrogen and particulates are the most significant pollutants emitted by diesel engines and are the two pollutants of most concern to the United Kingdom in terms of air quality. Oxides of nitrogen can have adverse effects on health, particularly among those with respiratory problems. In addition, they contribute to acidification, and to ground level ozone formation. Particulates are also damaging to health, particularly those suffering from cardiovascular and respiratory complaints. What has been done to control these emissions? Directive 97/68/EC was passed by the European Parliament and the Council of 16 December 1997 to approximate the
