42.


The significance of any changes in pollutant concentrations in relation to construction traffic emissions were considered in the context of the national air quality Objectives detailed in the Government's Air Quality Strategy and the Environmental Protection UK (EPUK) guidance document 'Development Control: Planning for Air Quality 2010 Update' (EPUK 2010).


43. The assessment considered the following scenarios:


 Base year (2012);  Year of Construction (2018) ‘without proposed East Anglia THREE project’;  Year of Construction (2018) ‘with Scenario 1’; and  Year of Construction (2018) ‘with Scenario 2’


44.


24 hour Annual Average Daily Traffic (AADT) flows and HGV percentages were provided by Royal HaskoningDHV, the transportation consultants for the proposed East Anglia THREE project. The traffic data used in the assessment is detailed in Table 20.11 and Table 20.12.


Table 20.11 Traffic Data used in the Assessment – Baseline Scenarios Road


Link ID number


1


2 3


4


5 6 7 9


10 11


12 13


A14 between the J51 and J52


A14 between the J52 and J53


A1156 south from J53


A14 between the J53 and J55


A12 south from J55 Paper Mill Lane B1113


A14 between the J55 and J56


A14 between the J56 and J58


A14 south from J58 Trimley Road


Newbourne Road/Ipswich Road


Preliminary Environmental Information May 2014


2012 Base year AADT 48,978


53,851 18,006


46,394


42,767 1,691 4,669


53,349


39,898 29,811


3,516 2,224


% HGV 10


13 2


14


12 16 12 14


14 19


8 10


2018 Without Proposed Project


AADT 53,044


58,321 19,501


50,245


46,317 1,831 5,018


57,777


43,210 32,286


3,808 2409


% HGV 10


13 2


14


12 16 12 14


14 19


8 10


Speed (kph)


112


112 48


112


112 48 80


112


112 112


96 96


East Anglia THREE Offshore Windfarm


Chapter 20 Air Quality Page 16


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