The control of dust and emissions during construction and demolition - Supplementary Planning Guidance
Greater London Authority (2014)
The Mayor has published supplementary planning guidance (SPG) on the control of dust and emissions during construction and demolition.
This SPG seeks to reduce emissions of dust, PM10 and PM2.5 from construction and demolition activities in London. It also aims to manage emissions of nitrogen oxides (NOx) from construction and demolition machinery by means of a new non-road mobile machinery Ultra Low Emissions Zone (ULEZ).
- Provides more detailed guidance on the implementation of all relevant policies in the London Plan and the Mayors Air Quality Strategy to neighbourhoods, boroughs, developers, architects, consultants and any other parties involved in any aspect of the demolition and construction process;
- sets out the methodology for assessing the air quality impacts of construction and demolition in London; and
- identifies good practice for mitigating and managing air quality impacts that is relevant and achievable, with the over-arching aim of protecting public health and the environment.
This SPG provides guidance on the implementation of London Plan policy 7.14 - Improving Air Quality, as well as a range of policies that deal with environmental sustainability, health and quality of life.
- To support the policies in the London Plan this draft SPG includes guidance on:
- the preparation of an Air Quality Statement for construction and demolition activities, including air quality (dust) risk assessments;
- the stages of development the Air Quality Statement is to cover, that is for demolition, earthwork, construction stages and trackout (vehicles leaving the site) stages of the works;
- the identification of the potential scale (large, medium, small) of dust emissions for each stage of work;
- the identification of the level of risk due to the scale of dust emissions on health, soiling (dirt) and the natural environment, depending on activities, their intensity and the sensitivity of receptors
- best practice methods for controlling dust on-site and to prevent trackout
- recommendations for monitoring
- early notification of new 2015 and 2020 standards for non-road mobile machinery
Directives on emissions from non-road mobile machinery (Directive 97/68/EC and subsequent ammendments)
Non-Road Mobile Machinery (NRMM) covers a large variety of engine installations in machines used for purposes other then for passenger or goods transport.
Diesel and spark emission engines installed in these NRMM such as excavators, bulldozers, front loaders, back loaders, compressors contribute greatly to air pollution by emitting carbon oxide (CO), hydrocarbons (HC), nitrogen oxides (NOx) and particulate matters. In line with the EU environmental policy it is the objective to progressively reduce the emissions and to phase out polluting equipment.
Emissions from these engines are regulated before they are placed on the market by six directives: the "mother" Directive 97/68/EC, the amendments Directive 2002/88/EC, Directive 2004/26/EC, Directive 2006/105/EC, Directive 2011/88/EU, Directive 2012/46/EU and the last amendment in June 2016.
For the various types of NRMM, the Directive stipulates the maximum permitted exhaust emissions as a function of the power of the relevant engine. Moreover the Directive includes a series of emission limit stages of increasing stringency with corresponding compliance dates. Manufacturers must ensure that new engines comply with these limits in order that they can be placed on the market.