Averaging Period


Objectives Should Apply At:


Building facades of residential properties, schools, hospitals, care homes etc


Objectives Should Generally Not Apply At:


public do not have regular access.


Hotels, unless people live there as their permanent residence. Gardens of residential properties.


Kerbside sites (as opposed to locations at the building façade), or any other location where public exposure is expected to be short term.


24-Hour Mean and 8-Hour Mean


All locations where the annual mean Objective would apply. Kerbside sites (for example, pavements of busy shopping streets)


1-Hour Mean


All locations where the annual mean and 24 and 8-hour mean Objectives apply. Kerbside sites (for example, pavements of busy shopping streets).


Those parts of car parks, bus stations and railway stations etc which are not fully enclosed, where members of the public might reasonably be expected to spend one hour or more.


Any outdoor locations where members of the public might reasonably be expected to spend one hour or longer.


50.


Sensitive receptor locations that experience pollutant concentrations close to, or in exceedence of, the annual mean Objectives are of greater sensitivity to pollutant increases, and a smaller magnitude of change results in a larger impact significance as detailed below.


20.4.3.2.2Magnitude 51.


Changes in pollutant concentrations are predicted at representative receptor locations. The change in annual mean pollutant (NO2 and PM10) concentrations are assigned a significance using the magnitude of change as shown in Table 20.15 and the predicted pollutant concentration in accordance with guidance provided by EPUK.


Kerbside sites (as opposed to locations at the building façade), or any other location where public exposure is expected to be short term.


Kerbside sites where the public would not be expected to have regular access.


Preliminary Environmental Information May 2014


East Anglia THREE Offshore Windfarm


Chapter 20 Air Quality Page 20


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