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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