Table 20.25 Predicted PM10 Annual Mean Concentrations (µg.m-3) for Scenario 1 and Scenario 2 at Sensitive Receptor Locations
Receptor Number
R1 R2 R3 R4 R5 R6 R7 R8 R9
R10 R11 R12 R13 R14 R15 R16 R17 R18 R19 R20 R21 R22 R23 R24 R25 R26 R27 R28 R29
93.
2018 ‘Without Proposed Project’
22.17 20.83 21.24 17.41 20.91 19.36 18.43 17.34 17.18 16.43 18.71 19.11 26.52 25.13 19.89 19.10 20.38 17.38 17.69 16.02 17.23 17.11 16.53 16.93 17.05 18.27 21.50 22.12
2018 ‘With Scenario 1’
17.86 22.24 20.84 21.28 17.55 21.11 19.37 18.62 17.45 17.34 16.47 18.76 19.16 26.54 25.18 19.93 19.11 20.39 17.40 17.69 16.06 17.52 17.37 16.70 16.97 17.05 18.31 21.51 22.13
2018 ‘With Scenario 2’
PM10 (µg.m-3) PM10 (µg.m-3) PM10 (µg.m-3) 17.85
17.95 22.24 20.87 21.29 17.73 21.51 19.43 18.84 17.61 17.55 16.49 18.76 19.22 26.95 25.58 19.94 19.14 20.44 17.42 17.77 16.11 17.79 17.64 16.75 17.02 17.06 18.42 21.57 22.15
Change in PM10 Concentrations (µg.m-3)
Scenario 1 0.00
0.07 0.00 0.04 0.13 0.19 0.01 0.19 0.11 0.15 0.05 0.04 0.05 0.02 0.05 0.05 0.00 0.01 0.02 0.00 0.04 0.29 0.27 0.17 0.04 0.00 0.04 0.00 0.01
Scenario 2 0.09
0.08 0.04 0.05 0.32 0.60 0.07 0.41 0.27 0.37 0.06 0.04 0.11 0.43 0.45 0.05 0.03 0.06 0.04 0.08 0.09 0.56 0.54 0.22 0.08 0.01 0.15 0.07 0.02
The results of the air quality assessment predict that concentrations of NO2 are below the annual mean air quality Objective of 40µg.m-3 at all receptors for Scenario 1 and Scenario 2.
94.
In accordance with Defra guidance (Defra 2009), it may be assumed that exceedences of the 1-hour mean Objective for NO2 are unlikely as the predicted annual mean concentrations are less than 60µg.m-3.
95.
Predicted concentrations of PM10 are below the annual mean Objective of 40µg.m-3. The short term PM10 Objective is predicted to be met at all identified receptor locations with no exceedences of the daily mean Objective of 50μg.m-3.
Preliminary Environmental Information May 2014
East Anglia THREE Offshore Windfarm
Chapter 20 Air Quality Page 34
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