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Transport Research Laboratory
The Highways Agency roadside air
pollution monitoring network report -
2009 volume II
by J S Price, J Pittman and D Gardiner
CPR1094 (II)RPN1446 (II)
396 (387) HTRL
CLIENT PROJECT REPORT
Transport Research Laboratory
CLIENT PROJECT REPORT CPR1094 (II)
The Highways Agency roadside air pollution monitoring network report - 2009 volume II
by J S Price, J Pittman and D Gardiner (TRL)
Prepared for: Project Record: 396 (387) HTRL
Impact of reduced emissions on air quality -
2009 volume II
Client: Highways Agency
(Andrew Bean)
Copyright Transport Research Laboratory March 2011
The views expressed are those of the author(s) and not necessarily those of Highways
Agency.
Name Date
Approved
Project
Manager Julia Pittman 18/03/2010
Technical
Referee David Gardiner 18/03/2010
Client Project Report
TRL CPR1094 (II)
Contents Amendment Record
This report has been issued and amended as follows
Version Date Description Editor Technical
Referee
1 15/02/2011 The Highways Agency roadside air pollution monitoring network report
– 2009 volume II
Jennifer Price / Julia Pittman
David Gardiner
Client Project Report
TRL v CPR1094 (II)
Contents
List of Figures vi
Executive summary xiv
1 Nitrogen dioxide 1
1.1 M4 (Theale 2) 1
1.2 Bell Common Tunnel 7
1.3 M25 (B) 12
1.4 M60 18
2 Ozone 25
2.1 M4 (Theale 2) 25
2.2 Bell Common Tunnel 32
2.3 M25 (B) 37
2.4 M60 43
3 Sulphur dioxide 50
3.1 15-minute mean 50 3.1.1 M25 (B) 50 3.1.2 M60 56
3.2 1-hour mean 62 3.2.1 M25 (B) 62 3.2.2 M60 68
3.3 24-hour mean 75 3.3.1 M25 (B) 75 3.3.2 M60 81
4 Carbon monoxide 88
4.1 M4 (Theale 2) 88
4.2 Bell Common Tunnel 94
4.3 M25 (B) 99
4.4 M60 105
5 Particulate Matter 111
5.1 M4 (Theale 2) 111
5.2 M25 (B) 118
5.3 M60 125
6 Historical compliance with air quality standards, limits and objectives 132
7 Historical hourly data summary statistics 135
8 Historical traffic flow summary statistics 154
Client Project Report
TRL vi CPR1094 (II)
List of Figures
Figure 1.1: M4 (Theale 2) 1-hour mean concentration of nitrogen dioxide January 2009 1
Figure 1.2: M4 (Theale 2) 1-hour mean concentration of nitrogen dioxide February 2009
..................................................................................................................... 2
Figure 1.3: M4 (Theale 2) 1-hour mean concentration of nitrogen dioxide March 2009 ... 2
Figure 1.4: M4 (Theale 2) 1-hour mean concentration of nitrogen dioxide April 2009 ..... 3
Figure 1.5: M4 (Theale 2) 1-hour mean concentration of nitrogen dioxide May 2009...... 3
Figure 1.6: M4 (Theale 2) 1-hour mean concentration of nitrogen dioxide June 2009 ..... 4
Figure 1.7: M4 (Theale 2) 1-hour mean concentration of nitrogen dioxide July 2009 ...... 4
Figure 1.8: M4 (Theale 2) 1-hour mean concentration of nitrogen dioxide August 2009 . 5
Figure 1.9: M4 (Theale 2) 1-hour mean concentration of nitrogen dioxide September
2009 .............................................................................................................. 5
Figure 1.10: M4 (Theale 2) 1-hour mean concentration of nitrogen dioxide October 2009
..................................................................................................................... 6
Figure 1.11: M4 (Theale 2) 1-hour mean concentration of nitrogen dioxide November
2009 .............................................................................................................. 6
Figure 1.12: M4 (Theale 2) 1-hour mean concentration of nitrogen dioxide December
2009 .............................................................................................................. 7
Figure 1.13: Bell Common Tunnel 1-hour mean concentration of nitrogen dioxide January
2009 .............................................................................................................. 7
Figure 1.14: Bell Common Tunnel 1-hour mean concentration of nitrogen dioxide
February 2009 ................................................................................................ 8
Figure 1.15: Bell Common Tunnel 1-hour mean concentration of nitrogen dioxide March
2009 .............................................................................................................. 8
Figure 1.16: Bell Common Tunnel 1-hour mean concentration of nitrogen dioxide April
2009 .............................................................................................................. 9
Figure 1.17: Bell Common Tunnel 1-hour mean concentration of nitrogen dioxide May
2009 .............................................................................................................. 9
Figure 1.18: Bell Common Tunnel 1-hour mean concentration of nitrogen dioxide June
2009 ............................................................................................................ 10
Figure 1.19: Bell Common Tunnel 1-hour mean concentration of nitrogen dioxide July
2009 ............................................................................................................ 10
Figure 1.20: Bell Common Tunnel 1-hour mean concentration of nitrogen dioxide August
2009 ............................................................................................................ 11
Figure 1.21: Bell Common Tunnel 1-hour mean concentration of nitrogen dioxide
September 2009 ............................................................................................ 11
Figure 1.22: M25 (B) 1-hour mean concentration of nitrogen dioxide January 2009 ..... 12
Figure 1.23: M25 (B) 1-hour mean concentration of nitrogen dioxide February 2009 ... 13
Figure 1.24: M25 (B) 1-hour mean concentration of nitrogen dioxide March 2009 ....... 13
Figure 1.25: M25 (B) 1-hour mean concentration of nitrogen dioxide April 2009 ......... 14
Figure 1.26: M25 (B) 1-hour mean concentration of nitrogen dioxide May 2009 .......... 14
Figure 1.27: M25 (B) 1-hour mean concentration of nitrogen dioxide June 2009 ......... 15
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TRL vii CPR1094 (II)
Figure 1.28: M25 (B) 1-hour mean concentration of nitrogen dioxide July 2009 .......... 15
Figure 1.29: M25 (B) 1-hour mean concentration of nitrogen dioxide August 2009 ...... 16
Figure 1.30: M25 (B) 1-hour mean concentration of nitrogen dioxide September 2009 16
Figure 1.31: M25 (B) 1-hour mean concentration of nitrogen dioxide October 2009 ..... 17
Figure 1.32: M25 (B) 1-hour mean concentration of nitrogen dioxide November 2009 . 17
Figure 1.33: M25 (B) 1-hour mean concentration of nitrogen dioxide December 2009.. 18
Figure 1.34: M60 1-hour mean concentration of nitrogen dioxide January 2009 .......... 18
Figure 1.35: M60 1-hour mean concentration of nitrogen dioxide February 2009 ......... 19
Figure 1.36: M60 1-hour mean concentration of nitrogen dioxide March 2009 ............. 19
Figure 1.37: M60 1-hour mean concentration of nitrogen dioxide April 2009 ............... 20
Figure 1.38: M60 1-hour mean concentration of nitrogen dioxide May 2009 ............... 20
Figure 1.39: M60 1-hour mean concentration of nitrogen dioxide June 2009 ............... 21
Figure 1.40: M60 1-hour mean concentration of nitrogen dioxide July 2009 ................ 21
Figure 1.41: M60 1-hour mean concentration of nitrogen dioxide August 2009 ........... 22
Figure 1.42: M60 1-hour mean concentration of nitrogen dioxide September 2009 ...... 22
Figure 1.43: M60 1-hour mean concentration of nitrogen dioxide October 2009 .......... 23
Figure 1.44: M60 1-hour mean concentration of nitrogen dioxide November 2009 ....... 23
Figure 1.45: M60 1-hour mean concentration of nitrogen dioxide December 2009 ....... 24
Figure 2.1: M4 (Theale 2) running 8-hour mean concentration of ozone January 2009 . 25
Figure 2.2: M4 (Theale 2) running 8-hour mean concentration of ozone February 2009 26
Figure 2.3: M4 (Theale 2) running 8-hour mean concentration of ozone March 2009 ... 26
Figure 2.4: M4 (Theale 2) running 8-hour mean concentration of ozone April 2009...... 27
Figure 2.5: M4 (Theale 2) running 8-hour mean concentration of ozone May 2009 ...... 27
Figure 2.6: M4 (Theale 2) running 8-hour mean concentration of ozone June 2009 ..... 28
Figure 2.7: M4 (Theale 2) running 8-hour mean concentration of ozone July 2009 ...... 28
Figure 2.8: M4 (Theale 2) running 8-hour mean concentration of ozone August 2009 .. 29
Figure 2.9: M4 (Theale 2) running 8-hour mean concentration of ozone September 2009
................................................................................................................... 29
Figure 2.10: M4 (Theale 2) running 8-hour mean concentration of ozone October 2009 30
Figure 2.11: M4 (Theale 2) running 8-hour mean concentration of ozone November 2009
................................................................................................................... 30
Figure 2.12: M4 (Theale 2) running 8-hour mean concentration of ozone December 2009
................................................................................................................... 31
Figure 2.13: Bell Common Tunnel running 8-hour mean concentration of ozone January
2009 ............................................................................................................ 32
Figure 2.14: Bell Common Tunnel running 8-hour mean concentration of ozone February
2009 ............................................................................................................ 33
Figure 2.15: Bell Common Tunnel running 8-hour mean concentration of ozone March
2009 ............................................................................................................ 33
Figure 2.16: Bell Common Tunnel running 8-hour mean concentration of ozone April
2009 ............................................................................................................ 34
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TRL viii CPR1094 (II)
Figure 2.17: Bell Common Tunnel running 8-hour mean concentration of ozone May
2009 ............................................................................................................ 34
Figure 2.18: Bell Common Tunnel running 8-hour mean concentration of ozone June
2009 ............................................................................................................ 35
Figure 2.19: Bell Common Tunnel running 8-hour mean concentration of ozone July 2009
................................................................................................................... 35
Figure 2.20: Bell Common Tunnel running 8-hour mean concentration of ozone August
2009 ............................................................................................................ 36
Figure 2.21: Bell Common Tunnel running 8-hour mean concentration of ozone
September 2009 ............................................................................................ 36
Figure 2.22: M25 (B) running 8-hour mean concentration of ozone January 2009 ....... 37
Figure 2.23: M25 (B) running 8-hour mean concentration of ozone February 2009 ...... 38
Figure 2.24: M25 (B) running 8-hour mean concentration of ozone March 2009 .......... 38
Figure 2.25: M25 (B) running 8-hour mean concentration of ozone April 2009 ............ 39
Figure 2.26: M25 (B) running 8-hour mean concentration of ozone May 2009 ............. 39
Figure 2.27: M25 (B) running 8-hour mean concentration of ozone June 2009 ............ 40
Figure 2.28: M25 (B) running 8-hour mean concentration of ozone July 2009 ............. 40
Figure 2.29: M25 (B) running 8-hour mean concentration of ozone August 2009 ......... 41
Figure 2.30: M25 (B) running 8-hour mean concentration of ozone September 2009 ... 41
Figure 2.31: M25 (B) running 8-hour mean concentration of ozone October 2009 ....... 42
Figure 2.32: M25 (B) running 8-hour mean concentration of ozone November 2009 .... 42
Figure 2.33: M25 (B) running 8-hour mean concentration of ozone December 2009 .... 43
Figure 2.34: M60 running 8-hour mean concentration of ozone January 2009 ............. 43
Figure 2.35: M60 running 8-hour mean concentration of ozone February 2009 ........... 44
Figure 2.36: M60 running 8-hour mean concentration of ozone March 2009 ............... 44
Figure 2.37: M60 running 8-hour mean concentration of ozone April 2009 ................. 45
Figure 2.38: M60 running 8-hour mean concentration of ozone May 2009 .................. 45
Figure 2.39: M60 running 8-hour mean concentration of ozone June 2009 ................. 46
Figure 2.40: M60 running 8-hour mean concentration of ozone July 2009 .................. 46
Figure 2.41: M60 running 8-hour mean concentration of ozone August 2009 .............. 47
Figure 2.42: M60 running 8-hour mean concentration of ozone September 2009 ........ 47
Figure 2.43: M60 running 8-hour mean concentration of ozone October 2009 ............. 48
Figure 2.44: M60 running 8-hour mean concentration of ozone November 2009 ......... 48
Figure 2.45: M60 running 8-hour mean concentration of ozone December 2009 .......... 49
Figure 3.1: M25 (B) 15-minute mean concentration of sulphur dioxide January 2009 ... 50
Figure 3.2: M25 (B) 15-minute mean concentration of sulphur dioxide February 2009 . 51
Figure 3.3: M25 (B) 15-minute mean concentration of sulphur dioxide March 2009 ..... 51
Figure 3.4: M25 (B) 15-minute mean concentration of sulphur dioxide April 2009 ....... 52
Figure 3.5: M25 (B) 15-minute mean concentration of sulphur dioxide May 2009 ........ 52
Figure 3.6: M25 (B) 15-minute mean concentration of sulphur dioxide June 2009 ....... 53
Client Project Report
TRL ix CPR1094 (II)
Figure 3.7: M25 (B) 15-minute mean concentration of sulphur dioxide July 2009 ........ 53
Figure 3.8: M25 (B) 15-minute mean concentration of sulphur dioxide August 2009 .... 54
Figure 3.9: M25 (B) 15-minute mean concentration of sulphur dioxide September 2009
................................................................................................................... 54
Figure 3.10: M25 (B) 15-minute mean concentration of sulphur dioxide October 2009 . 55
Figure 3.11: M25 (B) 15-minute mean concentration of sulphur dioxide November 2009
................................................................................................................... 55
Figure 3.12: M25 (B) 15-minute mean concentration of sulphur dioxide December 2009
................................................................................................................... 56
Figure 3.13: M60 15-minute mean concentration of sulphur dioxide January 2009 ...... 56
Figure 3.14: M60 15-minute mean concentration of sulphur dioxide February 2009 ..... 57
Figure 3.15: M60 15-minute mean concentration of sulphur dioxide March 2009 ......... 57
Figure 3.16: M60 15-minute mean concentration of sulphur dioxide April 2009 ........... 58
Figure 3.17: M60 15-minute mean concentration of sulphur dioxide May 2009 ............ 58
Figure 3.18: M60 15-minute mean concentration of sulphur dioxide June 2009 ........... 59
Figure 3.19: M60 15-minute mean concentration of sulphur dioxide July 2009 ............ 59
Figure 3.20: M60 15-minute mean concentration of sulphur dioxide August 2009........ 60
Figure 3.21: M60 15-minute mean concentration of sulphur dioxide September 2009 .. 60
Figure 3.22: M60 15-minute mean concentration of sulphur dioxide October 2009 ...... 61
Figure 3.23: M60 15-minute mean concentration of sulphur dioxide November 2009 ... 61
Figure 3.24: M60 15-minute mean concentration of sulphur dioxide December 2009 ... 62
Figure 3.25: M25 (B) 1-hour mean concentration of sulphur dioxide January 2009 ...... 62
Figure 3.26: M25 (B) 1-hour mean concentration of sulphur dioxide February 2009..... 63
Figure 3.27: M25 (B) 1-hour mean concentration of sulphur dioxide March 2009......... 63
Figure 3.28: M25 (B) 1-hour mean concentration of sulphur dioxide April 2009 ........... 64
Figure 3.29: M25 (B) 1-hour mean concentration of sulphur dioxide May 2009 ........... 64
Figure 3.30: M25 (B) 1-hour mean concentration of sulphur dioxide June 2009 .......... 65
Figure 3.31: M25 (B) 1-hour mean concentration of sulphur dioxide July 2009 ........... 65
Figure 3.32: M25 (B) 1-hour mean concentration of sulphur dioxide August 2009 ....... 66
Figure 3.33: M25 (B) 1-hour mean concentration of sulphur dioxide September 2009 .. 66
Figure 3.34: M25 (B) 1-hour mean concentration of sulphur dioxide October 2009 ...... 67
Figure 3.35: M25 (B) 1-hour mean concentration of sulphur dioxide November 2009 ... 67
Figure 3.36: M25 (B) 1-hour mean concentration of sulphur dioxide December 2009 ... 68
Figure 3.37: M60 1-hour mean concentration of sulphur dioxide January 2009 ........... 68
Figure 3.38: M60 1-hour mean concentration of sulphur dioxide February 2009 .......... 69
Figure 3.39: M60 1-hour mean concentration of sulphur dioxide March 2009 .............. 69
Figure 3.40: M60 1-hour mean concentration of sulphur dioxide April 2009 ................ 70
Figure 3.41: M60 1-hour mean concentration of sulphur dioxide May 2009 ................. 70
Figure 3.42: M60 1-hour mean concentration of sulphur dioxide June 2009 ................ 71
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TRL x CPR1094 (II)
Figure 3.43: M60 1-hour mean concentration of sulphur dioxide July 2009 ................. 71
Figure 3.44: M60 1-hour mean concentration of sulphur dioxide August 2009 ............. 72
Figure 3.45: M60 1-hour mean concentration of sulphur dioxide September 2009 ....... 72
Figure 3.46: M60 1-hour mean concentration of sulphur dioxide October 2009 ........... 73
Figure 3.47: M60 1-hour mean concentration of sulphur dioxide November 2009 ........ 73
Figure 3.48: M60 1-hour mean concentration of sulphur dioxide December 2009 ........ 74
Figure 3.49: M25 (B) 24-hour mean concentration of sulphur dioxide January 2009 .... 75
Figure 3.50: M25 (B) 24-hour mean concentration of sulphur dioxide February 2009 ... 76
Figure 3.51: M25 (B) 24-hour mean concentration of sulphur dioxide March 2009 ....... 76
Figure 3.52: M25 (B) 24-hour mean concentration of sulphur dioxide April 2009 ......... 77
Figure 3.53: M25 (B) 24-hour mean concentration of sulphur dioxide May 2009 ......... 77
Figure 3.54: M25 (B) 24-hour mean concentration of sulphur dioxide June 2009 ......... 78
Figure 3.55: M25 (B) 24-hour mean concentration of sulphur dioxide July 2009 .......... 78
Figure 3.56: M25 (B) 24-hour mean concentration of sulphur dioxide August 2009 ..... 79
Figure 3.57: M25 (B) 24-hour mean concentration of sulphur dioxide September 2009 79
Figure 3.58: M25 (B) 24-hour mean concentration of sulphur dioxide October 2009 .... 80
Figure 3.59: M25 (B) 24-hour mean concentration of sulphur dioxide November 2009 . 80
Figure 3.60: M25 (B) 24-hour mean concentration of sulphur dioxide December 2009 . 81
Figure 3.61: M60 24-hour mean concentration of sulphur dioxide January 2009 .......... 81
Figure 3.62: M60 24-hour mean concentration of sulphur dioxide February 2009 ........ 82
Figure 3.63: M60 24-hour mean concentration of sulphur dioxide March 2009 ............ 82
Figure 3.64: M60 24-hour mean concentration of sulphur dioxide April 2009 .............. 83
Figure 3.65: M60 24-hour mean concentration of sulphur dioxide May 2009 ............... 83
Figure 3.66: M60 24-hour mean concentration of sulphur dioxide June 2009 .............. 84
Figure 3.67: M60 24-hour mean concentration of sulphur dioxide July 2009 ............... 84
Figure 3.68: M60 24-hour mean concentration of sulphur dioxide August 2009 ........... 85
Figure 3.69: M60 24-hour mean concentration of sulphur dioxide September 2009 ..... 85
Figure 3.70: M60 24-hour mean concentration of sulphur dioxide October 2009 .......... 86
Figure 3.71: M60 24-hour mean concentration of sulphur dioxide November 2009 ...... 86
Figure 3.72: M60 24-hour mean concentration of sulphur dioxide December 2009 ...... 87
Figure 4.1: M4 (Theale 2) running 8-hour mean concentration of carbon monoxide
January 2009 ................................................................................................ 88
Figure 4.2: M4 (Theale 2) running 8-hour mean concentration of carbon monoxide
February 2009 .............................................................................................. 89
Figure 4.3: M4 (Theale 2) running 8-hour mean concentration of carbon monoxide March
2009 ............................................................................................................ 89
Figure 4.4: M4 (Theale 2) running 8-hour mean concentration of carbon monoxide April
2009 ............................................................................................................ 90
Figure 4.5: M4 (Theale 2) running 8-hour mean concentration of carbon monoxide May
2009 ............................................................................................................ 90
Client Project Report
TRL xi CPR1094 (II)
Figure 4.6: M4 (Theale 2) running 8-hour mean concentration of carbon monoxide June
2009 ............................................................................................................ 91
Figure 4.7: M4 (Theale 2) running 8-hour mean concentration of carbon monoxide July
2009 ............................................................................................................ 91
Figure 4.8: M4 (Theale 2) running 8-hour mean concentration of carbon monoxide
August 2009 ................................................................................................. 92
Figure 4.9: M4 (Theale 2) running 8-hour mean concentration of carbon monoxide
September 2009 ............................................................................................ 92
Figure 4.10: M4 (Theale 2) running 8-hour mean concentration of carbon monoxide
October 2009 ................................................................................................ 93
Figure 4.11: M4 (Theale 2) running 8-hour mean concentration of carbon monoxide
November 2009 ............................................................................................. 93
Figure 4.12: M4 (Theale 2) running 8-hour mean concentration of carbon monoxide
December 2009 ............................................................................................. 94
Figure 4.13: Bell Common Tunnel running 8-hour mean concentration of carbon
monoxide January 2009 ................................................................................. 94
Figure 4.14: Bell Common Tunnel running 8-hour mean concentration of carbon
monoxide February 2009 ................................................................................ 95
Figure 4.15: Bell Common Tunnel running 8-hour mean concentration of carbon
monoxide March 2009 .................................................................................... 95
Figure 4.16: Bell Common Tunnel running 8-hour mean concentration of carbon
monoxide April 2009 ...................................................................................... 96
Figure 4.17: Bell Common Tunnel running 8-hour mean concentration of carbon
monoxide May 2009 ....................................................................................... 96
Figure 4.18: Bell Common Tunnel running 8-hour mean concentration of carbon
monoxide June 2009 ...................................................................................... 97
Figure 4.19: Bell Common Tunnel running 8-hour mean concentration of carbon
monoxide July 2009 ....................................................................................... 97
Figure 4.20: Bell Common Tunnel running 8-hour mean concentration of carbon
monoxide August 2009 ................................................................................... 98
Figure 4.21: Bell Common Tunnel running 8-hour mean concentration of carbon
monoxide September 2009 ............................................................................. 98
Figure 4.22: M25 (B) running 8-hour mean concentration of carbon monoxide January
2009 ............................................................................................................ 99
Figure 4.23: M25 (B) running 8-hour mean concentration of carbon monoxide February
2009 ............................................................................................................ 99
Figure 4.24: M25 (B) running 8-hour mean concentration of carbon monoxide March
2009 .......................................................................................................... 100
Figure 4.25: M25 (B) running 8-hour mean concentration of carbon monoxide April 2009
................................................................................................................. 100
Figure 4.26: M25 (B) running 8-hour mean concentration of carbon monoxide May 2009
................................................................................................................. 101
Figure 4.27: M25 (B) running 8-hour mean concentration of carbon monoxide June 2009
................................................................................................................. 101
Figure 4.28: M25 (B) running 8-hour mean concentration of carbon monoxide July 2009
................................................................................................................. 102
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TRL xii CPR1094 (II)
Figure 4.29: M25 (B) running 8-hour mean concentration of carbon monoxide August
2009 .......................................................................................................... 102
Figure 4.30: M25 (B) running 8-hour mean concentration of carbon monoxide September
2009 .......................................................................................................... 103
Figure 4.31: M25 (B) running 8-hour mean concentration of carbon monoxide October
2009 .......................................................................................................... 103
Figure 4.32: M25 (B) running 8-hour mean concentration of carbon monoxide November
2009 .......................................................................................................... 104
Figure 4.33: M25 (B) running 8-hour mean concentration of carbon monoxide December
2009 .......................................................................................................... 104
Figure 4.34: M60 running 8-hour mean concentration of carbon monoxide January 2009
................................................................................................................. 105
Figure 4.35: M60 running 8-hour mean concentration of carbon monoxide February 2009
................................................................................................................. 105
Figure 4.36: M60 running 8-hour mean concentration of carbon monoxide March 2009
................................................................................................................. 106
Figure 4.37: M60 running 8-hour mean concentration of carbon monoxide April 2009 106
Figure 4.38: M60 running 8-hour mean concentration of carbon monoxide May 2009 107
Figure 4.39: M60 running 8-hour mean concentration of carbon monoxide June 2009 107
Figure 4.40: M60 running 8-hour mean concentration of carbon monoxide July 2009 108
Figure 4.41: M60 running 8-hour mean concentration of carbon monoxide August 2009
................................................................................................................. 108
Figure 4.42: M60 running 8-hour mean concentration of carbon monoxide September
2009 .......................................................................................................... 109
Figure 4.43: M60 running 8-hour mean concentration of carbon monoxide October 2009
................................................................................................................. 109
Figure 4.44: M60 running 8-hour mean concentration of carbon monoxide November
2009 .......................................................................................................... 110
Figure 4.45: M60 running 8-hour mean concentration of carbon monoxide December
2009 .......................................................................................................... 110
Figure 5.1: M4 (Theale 2) 24-hour mean concentration of particulate matter January
2009 .......................................................................................................... 111
Figure 5.2: M4 (Theale 2) 24-hour mean concentration of particulate matter February
2009 .......................................................................................................... 112
Figure 5.3: M4 (Theale 2) 24-hour mean concentration of particulate matter March 2009
................................................................................................................. 112
Figure 5.4: M4 (Theale 2) 24-hour mean concentration of particulate matter April 2009
................................................................................................................. 113
Figure 5.5: M4 (Theale 2) 24-hour mean concentration of particulate matter May 2009
................................................................................................................. 113
Figure 5.6: M4 (Theale 2) 24-hour mean concentration of particulate matter June 2009
................................................................................................................. 114
Figure 5.7: M4 (Theale 2) 24-hour mean concentration of particulate matter July 2009
................................................................................................................. 114
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TRL xiii CPR1094 (II)
Figure 5.8: M4 (Theale 2) 24-hour mean concentration of particulate matter August
2009 .......................................................................................................... 115
Figure 5.9: M4 (Theale 2) 24-hour mean concentration of particulate matter September
2009 .......................................................................................................... 115
Figure 5.10: M4 (Theale 2) 24-hour mean concentration of particulate matter October
2009 .......................................................................................................... 116
Figure 5.11: M4 (Theale 2) 24-hour mean concentration of particulate matter November
2009 .......................................................................................................... 116
Figure 5.12: M4 (Theale 2) 24-hour mean concentration of particulate matter December
2009 .......................................................................................................... 117
Figure 5.13: M25 (B) 24-hour mean concentration of particulate matter January 2009
................................................................................................................. 118
Figure 5.14: M25 (B) 24-hour mean concentration of particulate matter February 2009
................................................................................................................. 119
Figure 5.15: M25 (B) 24-hour mean concentration of particulate matter March 2009 . 119
Figure 5.16: M25 (B) 24-hour mean concentration of particulate matter April 2009 ... 120
Figure 5.17: M25 (B) 24-hour mean concentration of particulate matter May 2009 .... 120
Figure 5.18: M25 (B) 24-hour mean concentration of particulate matter June 2009 ... 121
Figure 5.19: M25 (B) 24-hour mean concentration of particulate matter July 2009 .... 121
Figure 5.20: M25 (B) 24-hour mean concentration of particulate matter August 2009 122
Figure 5.21: M25 (B) 24-hour mean concentration of particulate matter September 2009
................................................................................................................. 122
Figure 5.22: M25 (B) 24-hour mean concentration of particulate matter October 2009
................................................................................................................. 123
Figure 5.23: M25 (B) 24-hour mean concentration of particulate matter November 2009
................................................................................................................. 123
Figure 5.24: M25 (B) 24-hour mean concentration of particulate matter December 2009
................................................................................................................. 124
Figure 5.25: M60 24-hour mean concentration of particulate matter January 2009 .... 125
Figure 5.26: M60 24-hour mean concentration of particulate matter February 2009 .. 126
Figure 5.27: M60 24-hour mean concentration of particulate matter March 2009 ...... 126
Figure 5.28: M60 24-hour mean concentration of particulate matter April 2009 ........ 127
Figure 5.29: M60 24-hour mean concentration of particulate matter May 2009 ......... 127
Figure 5.30: M60 24-hour mean concentration of particulate matter June 2009 ........ 128
Figure 5.31: M60 24-hour mean concentration of particulate matter July 2009 ......... 128
Figure 5.32: M60 24-hour mean concentration of particulate matter August 2009 ..... 129
Figure 5.33: M60 24-hour mean concentration of particulate matter September 2009 129
Figure 5.34: M60 24-hour mean concentration of particulate matter October 2009 .... 130
Figure 5.35: M60 24-hour mean concentration of particulate matter November 2009 130
Figure 5.36: M60 24-hour mean concentration of particulate matter December 2009 . 131
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TRL xiv CPR1094 (II)
Executive summary
This report is Volume II of the ninth report in a series summarising air pollutant
concentrations, meteorological data and traffic flows measured at sites across the
Highways Agency long term roadside monitoring network. The network comprises four
monitoring sites located on the M4, M25 and M60 motorways and in the Bell Common
Tunnel on the M25 motorway. Concentrations of carbon monoxide (CO), oxides of
nitrogen (NOX), nitric oxide (NO), nitrogen dioxide (NO2), particulate matter (PM10 and
PM2.5) and ozone (O3) were measured at all sites in 2009. In addition, concentrations of
total hydrocarbons (methane (CH4) and non-methane hydrocarbons (HC)) and ammonia
(NH3) were measured at the M4, M25 and M60 motorway sites and concentrations of
sulphur dioxide (SO2), hydrogen sulphide (H2S), aromatic hydrocarbons, polycyclic
aromatic hydrocarbons (PAH), aldehydes and metals were measured at the M25 and M60
motorway sites. Volume II of the report presents time-series plots for pollutant
concentrations recorded at the four monitoring sites in 2009. The pollutants presented
in this format are those covered by the Air Quality (England) Regulations 2000 (SI 2000
No. 928) and the Air Quality (England) (Amendment) Regulations 2002 (SI 2002 No.
3043) i.e. NO2, SO2, O3, PM10 and CO.
Client Project Report
TRL 1 CPR1094 (II)
1 Nitrogen dioxide
1.1 M4 (Theale 2)
Figure 1.1: M4 (Theale 2) 1-hour mean concentration of nitrogen dioxide
January 2009
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31
/01
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M4 (Theale 2) - January 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Client Project Report
TRL 2 CPR1094 (II)
Figure 1.2: M4 (Theale 2) 1-hour mean concentration of nitrogen dioxide
February 2009
Figure 1.3: M4 (Theale 2) 1-hour mean concentration of nitrogen dioxide March
2009
0
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27
/02
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09
28
/02
/20
09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M4 (Theale 2) - February 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Span and zero calibrationInstrument fault
0
20
40
60
80
100
120
140
160
180
200
220
240
01
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02
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30
/03
/20
09
31
/03
/20
09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M4 (Theale 2) - March 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Span and zero calibration
Client Project Report
TRL 3 CPR1094 (II)
Figure 1.4: M4 (Theale 2) 1-hour mean concentration of nitrogen dioxide April
2009
Figure 1.5: M4 (Theale 2) 1-hour mean concentration of nitrogen dioxide May
2009
0
20
40
60
80
100
120
140
160
180
200
220
240
01
/04
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02
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09
27
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09
28
/04
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09
29
/04
/20
09
30
/04
/20
09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M4 (Theale 2) - April 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Span and zero calibration
Instrument faultInstrument fault
Valid: high O3 concentrations observed
0
20
40
60
80
100
120
140
160
180
200
220
240
01
/05
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02
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30
/05
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09
31
/05
/20
09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M4 (Theale 2) - May 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Instrument fault Span and zero calibrationValid: high O3 concentrations observed
Valid: high O3 concentrations observed
Client Project Report
TRL 4 CPR1094 (II)
Figure 1.6: M4 (Theale 2) 1-hour mean concentration of nitrogen dioxide June
2009
Figure 1.7: M4 (Theale 2) 1-hour mean concentration of nitrogen dioxide July
2009
0
20
40
60
80
100
120
140
160
180
200
220
240
01
/06
/20
09
02
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03
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21
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24
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09
27
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09
28
/06
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09
29
/06
/20
09
30
/06
/20
09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M4 (Theale 2) - June 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
0
20
40
60
80
100
120
140
160
180
200
220
240
01
/07
/20
09
02
/07
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03
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04
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05
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28
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30
/07
/20
09
31
/07
/20
09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M4 (Theale 2) - July 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Span and zero calibration
Valid: low O3 concentrations observed
Client Project Report
TRL 5 CPR1094 (II)
Figure 1.8: M4 (Theale 2) 1-hour mean concentration of nitrogen dioxide
August 2009
Figure 1.9: M4 (Theale 2) 1-hour mean concentration of nitrogen dioxide
September 2009
0
20
40
60
80
100
120
140
160
180
200
220
240
01
/08
/20
09
02
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03
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04
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11
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12
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13
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14
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28
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29
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09
30
/08
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09
31
/08
/20
09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M4 (Theale 2) - August 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Span and zero calibration
Instrument faultRemoved from site and replaced with anotherAPI
Span and zero calibration
0
20
40
60
80
100
120
140
160
180
200
220
240
01
/09
/20
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02
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03
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04
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05
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11
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12
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27
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28
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29
/09
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09
30
/09
/20
09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M4 (Theale 2) - September 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Valid: high O3 concentrations observed
Valid: low O3 concentrations observed
Client Project Report
TRL 6 CPR1094 (II)
Figure 1.10: M4 (Theale 2) 1-hour mean concentration of nitrogen dioxide
October 2009
Figure 1.11: M4 (Theale 2) 1-hour mean concentration of nitrogen dioxide
November 2009
0
20
40
60
80
100
120
140
160
180
200
220
240
01
/10
/20
09
02
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03
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04
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05
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06
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07
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08
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10
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11
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12
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13
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14
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15
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16
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17
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30
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09
31
/10
/20
09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M4 (Theale 2) - October 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Valid: low O3 concentrations observed
0
20
40
60
80
100
120
140
160
180
200
220
240
01
/11
/20
09
02
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03
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09
04
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30
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M4 (Theale 2) - November 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Client Project Report
TRL 7 CPR1094 (II)
Figure 1.12: M4 (Theale 2) 1-hour mean concentration of nitrogen dioxide
December 2009
1.2 Bell Common Tunnel
Figure 1.13: Bell Common Tunnel 1-hour mean concentration of nitrogen
dioxide January 2009
0
20
40
60
80
100
120
140
160
180
200
220
240
01
/12
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09
02
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03
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29
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30
/12
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09
31
/12
/20
09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M4 (Theale 2) - December 2009 1-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Span and zero calibration
Valid: high O3
concentrations observed
Valid data
0
50
100
150
200
250
300
350
400
450
500
550
600
650
700
750
800
850
900
950
1000
01
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02
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03
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04
/01
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05
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11
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31
/01
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
Bell Common Tunnel - January 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Client Project Report
TRL 8 CPR1094 (II)
Figure 1.14: Bell Common Tunnel 1-hour mean concentration of nitrogen
dioxide February 2009
Figure 1.15: Bell Common Tunnel 1-hour mean concentration of nitrogen
dioxide March 2009
0
50
100
150
200
250
300
350
400
450
500
550
600
650
700
750
800
850
900
950
1000
01
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02
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03
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04
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05
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09
/02
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10
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11
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12
/02
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09
13
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09
14
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15
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16
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17
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18
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19
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20
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21
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22
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09
25
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26
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09
27
/02
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09
28
/02
/20
09
Co
nce
ntr
atio
n (
µg/
m3)
Date
Bell Common Tunnel - February 2009 1-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Valid: peak traffic 4-5 pm
Valid data
Valid dataValid data
0
50
100
150
200
250
300
350
400
450
500
550
600
650
700
750
800
850
900
950
1000
01
/03
/20
09
02
/03
/20
09
03
/03
/20
09
04
/03
/20
09
05
/03
/20
09
06
/03
/20
09
07
/03
/20
09
08
/03
/20
09
09
/03
/20
09
10
/03
/20
09
11
/03
/20
09
12
/03
/20
09
13
/03
/20
09
14
/03
/20
09
15
/03
/20
09
16
/03
/20
09
17
/03
/20
09
18
/03
/20
09
19
/03
/20
09
20
/03
/20
09
21
/03
/20
09
22
/03
/20
09
23
/03
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09
24
/03
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09
25
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09
26
/03
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09
27
/03
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09
28
/03
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09
29
/03
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09
30
/03
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09
31
/03
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
Bell Common Tunnel - March 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Valid data
Invalid data
Client Project Report
TRL 9 CPR1094 (II)
Figure 1.16: Bell Common Tunnel 1-hour mean concentration of nitrogen
dioxide April 2009
Figure 1.17: Bell Common Tunnel 1-hour mean concentration of nitrogen
dioxide May 2009
0
50
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28
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/20
09
29
/04
/20
09
30
/04
/20
09
Co
nce
ntr
atio
n (
µg/
m3)
Date
Bell Common Tunnel - April 2009 1-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Span and zero calibration
Valid: peaktraffic 6-9 am
0
50
100
150
200
250
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450
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09
30
/05
/20
09
31
/05
/20
09
Co
nce
ntr
atio
n (
µg/
m3)
Date
Bell Common Tunnel - May 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Valid: peak traffic 9-10 am
Client Project Report
TRL 10 CPR1094 (II)
Figure 1.18: Bell Common Tunnel 1-hour mean concentration of nitrogen
dioxide June 2009
Figure 1.19: Bell Common Tunnel 1-hour mean concentration of nitrogen
dioxide July 2009
0
50
100
150
200
250
300
350
400
450
500
550
600
650
700
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20
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26
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09
27
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09
28
/06
/20
09
29
/06
/20
09
30
/06
/20
09
Co
nce
ntr
atio
n (
µg/
m3)
Date
Bell Common Tunnel - June 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Span and zero calibration
Valid: peak traffic 4-5pm
Valid: peak traffic 3-5 pm
0
50
100
150
200
250
300
350
400
450
500
550
600
650
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1000
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27
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28
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29
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09
30
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/20
09
31
/07
/20
09
Co
nce
ntr
atio
n (
µg/
m3)
Date
Bell Common Tunnel - July 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Instrument fault
Valid: peak traffic 4-5pm
Client Project Report
TRL 11 CPR1094 (II)
Figure 1.20: Bell Common Tunnel 1-hour mean concentration of nitrogen
dioxide August 2009
Figure 1.21: Bell Common Tunnel 1-hour mean concentration of nitrogen
dioxide September 2009
0
50
100
150
200
250
300
350
400
450
500
550
600
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700
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30
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09
31
/08
/20
09
Co
nce
ntr
atio
n (
µg/
m3)
Date
Bell Common Tunnel - August 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Valid: peak traffic 6-8 am
Instrument fault
Span and zero calibration
0
50
100
150
200
250
300
350
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450
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650
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27
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29
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09
30
/09
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
Bell Common Tunnel - September 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Power failure
Instrument removed from site
Client Project Report
TRL 12 CPR1094 (II)
1.3 M25 (B)
Figure 1.22: M25 (B) 1-hour mean concentration of nitrogen dioxide January
2009
0
20
40
60
80
100
120
140
160
180
200
220
240
01
/01
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09
02
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22
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29
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30
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09
31
/01
/20
09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - January 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Power failure
Client Project Report
TRL 13 CPR1094 (II)
Figure 1.23: M25 (B) 1-hour mean concentration of nitrogen dioxide February
2009
Figure 1.24: M25 (B) 1-hour mean concentration of nitrogen dioxide March
2009
0
20
40
60
80
100
120
140
160
180
200
220
240
01
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09
02
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03
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04
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27
/02
/20
09
28
/02
/20
09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - February 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Valid: high O3 concentrations observed
0
20
40
60
80
100
120
140
160
180
200
220
240
01
/03
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02
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30
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09
31
/03
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - March 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Valid: high O3
concentrations observed
Valid: high O3 concentrations observed
Client Project Report
TRL 14 CPR1094 (II)
Figure 1.25: M25 (B) 1-hour mean concentration of nitrogen dioxide April 2009
Figure 1.26: M25 (B) 1-hour mean concentration of nitrogen dioxide May 2009
0
20
40
60
80
100
120
140
160
180
200
220
240
01
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09
30
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/20
09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - April 2009 1-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Valid data
0
20
40
60
80
100
120
140
160
180
200
220
240
01
/05
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31
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - May 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Span and zero calibrationValid: high O3
concentrations observed
Client Project Report
TRL 15 CPR1094 (II)
Figure 1.27: M25 (B) 1-hour mean concentration of nitrogen dioxide June 2009
Figure 1.28: M25 (B) 1-hour mean concentration of nitrogen dioxide July 2009
0
20
40
60
80
100
120
140
160
180
200
220
240
01
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09
30
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/20
09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - June 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Valid: high O3 concentrations observed
Valid: low O3 concentrations observed
Valid: high O3 concentrations observed
0
20
40
60
80
100
120
140
160
180
200
220
240
01
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31
/07
/20
09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - July 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Span and zero calibration
Valid data
Valid: high O3 concentrations observed
Valid: high O3
concentrations observed
Client Project Report
TRL 16 CPR1094 (II)
Figure 1.29: M25 (B) 1-hour mean concentration of nitrogen dioxide August
2009
Figure 1.30: M25 (B) 1-hour mean concentration of nitrogen dioxide September
2009
0
20
40
60
80
100
120
140
160
180
200
220
240
01
/08
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09
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - August 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Valid: high O3 concentrations observed
0
20
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120
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240
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30
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - September 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Span and zero calibration
Valid: high O3
concentrations observed
Valid: low O3 concentrations observed
Client Project Report
TRL 17 CPR1094 (II)
Figure 1.31: M25 (B) 1-hour mean concentration of nitrogen dioxide October
2009
Figure 1.32: M25 (B) 1-hour mean concentration of nitrogen dioxide November
2009
0
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30
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09
31
/10
/20
09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - October 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3Valid: high O3
concentrations observed Valid: high O3 concentrations observed
Valid: low O3
concentrations observed
0
20
40
60
80
100
120
140
160
180
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220
240
01
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30
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - November 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Power failurePower failure
Client Project Report
TRL 18 CPR1094 (II)
Figure 1.33: M25 (B) 1-hour mean concentration of nitrogen dioxide December
2009
1.4 M60
Figure 1.34: M60 1-hour mean concentration of nitrogen dioxide January 2009
0
20
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100
120
140
160
180
200
220
240
01
/12
/20
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02
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30
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31
/12
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - December 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Power failurePower failure
Valid: low O3
concentrations observed
0
20
40
60
80
100
120
140
160
180
200
220
240
01
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31
/01
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - January 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Power failure
Client Project Report
TRL 19 CPR1094 (II)
Figure 1.35: M60 1-hour mean concentration of nitrogen dioxide February 2009
Figure 1.36: M60 1-hour mean concentration of nitrogen dioxide March 2009
0
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100
120
140
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180
200
220
240
01
/02
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/02
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09
27
/02
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28
/02
/20
09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - February 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Span and zero calibration
0
20
40
60
80
100
120
140
160
180
200
220
240
01
/03
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31
/03
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - March 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Client Project Report
TRL 20 CPR1094 (II)
Figure 1.37: M60 1-hour mean concentration of nitrogen dioxide April 2009
Figure 1.38: M60 1-hour mean concentration of nitrogen dioxide May 2009
0
20
40
60
80
100
120
140
160
180
200
220
240
01
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/20
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02
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29
/04
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09
30
/04
/20
09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - April 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Valid: low O3 concentrations observed
Valid: high O3 concentrations observed
0
20
40
60
80
100
120
140
160
180
200
220
240
01
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31
/05
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - May 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Span and zero calibration
Client Project Report
TRL 21 CPR1094 (II)
Figure 1.39: M60 1-hour mean concentration of nitrogen dioxide June 2009
Figure 1.40: M60 1-hour mean concentration of nitrogen dioxide July 2009
0
20
40
60
80
100
120
140
160
180
200
220
240
01
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02
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30
/06
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - June 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Span and zero calibration
0
20
40
60
80
100
120
140
160
180
200
220
240
01
/07
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31
/07
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - July 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Span and zero calibration
Valid: high O3 concentrations observed
Client Project Report
TRL 22 CPR1094 (II)
Figure 1.41: M60 1-hour mean concentration of nitrogen dioxide August 2009
Figure 1.42: M60 1-hour mean concentration of nitrogen dioxide September
2009
0
20
40
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80
100
120
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160
180
200
220
240
01
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31
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - August 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
0
20
40
60
80
100
120
140
160
180
200
220
240
01
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02
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30
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - September 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Span and zero calibration Span and zero calibration
Client Project Report
TRL 23 CPR1094 (II)
Figure 1.43: M60 1-hour mean concentration of nitrogen dioxide October 2009
Figure 1.44: M60 1-hour mean concentration of nitrogen dioxide November
2009
0
20
40
60
80
100
120
140
160
180
200
220
240
01
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09
02
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30
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09
31
/10
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - October 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
0
20
40
60
80
100
120
140
160
180
200
220
240
01
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09
02
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - November 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3
Span and zero calibrationSpan and zero calibration
Valid: high O3 concentrations observed
Client Project Report
TRL 24 CPR1094 (II)
Figure 1.45: M60 1-hour mean concentration of nitrogen dioxide December
2009
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31
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - December 20091-hour mean concentration of nitrogen dioxide
UK Air Quality objective: 200 µg/m3Valid: high O3 concentrations observed
Client Project Report
TRL 25 CPR1094 (II)
2 Ozone
2.1 M4 (Theale 2)
Figure 2.1: M4 (Theale 2) running 8-hour mean concentration of ozone January
2009
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M4 (Theale 2) - January 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3
Client Project Report
TRL 26 CPR1094 (II)
Figure 2.2: M4 (Theale 2) running 8-hour mean concentration of ozone
February 2009
Figure 2.3: M4 (Theale 2) running 8-hour mean concentration of ozone March
2009
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120
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M4 (Theale 2) - February 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3
0
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120
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M4 (Theale 2) - March 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3
Valid: low NOx concentrations observed
Client Project Report
TRL 27 CPR1094 (II)
Figure 2.4: M4 (Theale 2) running 8-hour mean concentration of ozone April
2009
Figure 2.5: M4 (Theale 2) running 8-hour mean concentration of ozone May
2009
0
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M4 (Theale 2) - April 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3
Valid: low NOx concentrations observed
0
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60
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100
120
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M4 (Theale 2) - May 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3
Valid: low NOx concentrations observed
Client Project Report
TRL 28 CPR1094 (II)
Figure 2.6: M4 (Theale 2) running 8-hour mean concentration of ozone June
2009
Figure 2.7: M4 (Theale 2) running 8-hour mean concentration of ozone July
2009
0
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M4 (Theale 2) - June 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3Valid: low NOx concentrations observed
0
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60
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100
120
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M4 (Theale 2) - July 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3
Valid: low NOx concentrations observed
Client Project Report
TRL 29 CPR1094 (II)
Figure 2.8: M4 (Theale 2) running 8-hour mean concentration of ozone August
2009
Figure 2.9: M4 (Theale 2) running 8-hour mean concentration of ozone
September 2009
0
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M4 (Theale 2) - August 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3
0
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M4 (Theale 2) - September 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3
Valid: high NOx concentrations observed
Valid: low NOx concentrations observed
Client Project Report
TRL 30 CPR1094 (II)
Figure 2.10: M4 (Theale 2) running 8-hour mean concentration of ozone
October 2009
Figure 2.11: M4 (Theale 2) running 8-hour mean concentration of ozone
November 2009
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Co
nce
ntr
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n (
µg/
m3)
Date
M4 (Theale 2) - October 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3
Valid: high NOx concentrations observed
0
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Co
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atio
n (
µg/
m3)
Date
M4 (Theale 2) - November 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3
Client Project Report
TRL 31 CPR1094 (II)
Figure 2.12: M4 (Theale 2) running 8-hour mean concentration of ozone
December 2009
0
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Co
nce
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atio
n (
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m3)
Date
M4 (Theale 2) - December 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3
Valid: low NOx concentrations observed
Client Project Report
TRL 32 CPR1094 (II)
2.2 Bell Common Tunnel
Figure 2.13: Bell Common Tunnel running 8-hour mean concentration of ozone
January 2009
0
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Co
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atio
n (
µg/
m3)
Date
Bell Common Tunnel - January 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3
Client Project Report
TRL 33 CPR1094 (II)
Figure 2.14: Bell Common Tunnel running 8-hour mean concentration of ozone
February 2009
Figure 2.15: Bell Common Tunnel running 8-hour mean concentration of ozone
March 2009
0
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Co
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ntr
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m3)
Date
Bell Common Tunnel - February 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3
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Co
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ntr
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n (
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m3)
Date
Bell Common Tunnel - March 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3
Client Project Report
TRL 34 CPR1094 (II)
Figure 2.16: Bell Common Tunnel running 8-hour mean concentration of ozone
April 2009
Figure 2.17: Bell Common Tunnel running 8-hour mean concentration of ozone
May 2009
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Co
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ntr
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n (
µg/
m3)
Date
Bell Common Tunnel - April 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3
0
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Co
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ntr
atio
n (
µg/
m3)
Date
Bell Common Tunnel - May 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3
Client Project Report
TRL 35 CPR1094 (II)
Figure 2.18: Bell Common Tunnel running 8-hour mean concentration of ozone
June 2009
Figure 2.19: Bell Common Tunnel running 8-hour mean concentration of ozone
July 2009
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Co
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ntr
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n (
µg/
m3)
Date
Bell Common Tunnel - June 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3
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Co
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ntr
atio
n (
µg/
m3)
Date
Bell Common Tunnel - July 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3
Instrument fault
Client Project Report
TRL 36 CPR1094 (II)
Figure 2.20: Bell Common Tunnel running 8-hour mean concentration of ozone
August 2009
Figure 2.21: Bell Common Tunnel running 8-hour mean concentration of ozone
September 2009
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Co
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ntr
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µg/
m3)
Date
Bell Common Tunnel - August 2009Running 8-hour mean concentration of ozone
UK Air Quality objective:100 µg/m3
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Co
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ntr
atio
n (
µg/
m3)
Date
Bell Common Tunnel - September 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3
Instrument removed from site
Client Project Report
TRL 37 CPR1094 (II)
2.3 M25 (B)
Figure 2.22: M25 (B) running 8-hour mean concentration of ozone January
2009
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Co
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ntr
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n (
µg/
m3)
Date
M25 (B) - January 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3
Power failureValid: low NOx concentrations observed
Valid: low NOx concentrations observed
Client Project Report
TRL 38 CPR1094 (II)
Figure 2.23: M25 (B) running 8-hour mean concentration of ozone February
2009
Figure 2.24: M25 (B) running 8-hour mean concentration of ozone March 2009
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Co
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m3)
Date
M25 (B) - February 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3
Valid: low NOx concentrations observed
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Co
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n (
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Date
M25 (B) - March 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3
Valid: low NOx concentrations observedValid: low NOx concentrations observed
Client Project Report
TRL 39 CPR1094 (II)
Figure 2.25: M25 (B) running 8-hour mean concentration of ozone April 2009
Figure 2.26: M25 (B) running 8-hour mean concentration of ozone May 2009
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Co
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Date
M25 (B) - April 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3Valid: low NOx concentrations observed
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Co
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Date
M25 (B) - May 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3Valid: low NOx concentrations observed
Client Project Report
TRL 40 CPR1094 (II)
Figure 2.27: M25 (B) running 8-hour mean concentration of ozone June 2009
Figure 2.28: M25 (B) running 8-hour mean concentration of ozone July 2009
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Co
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Date
M25 (B) - June 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3 Valid: low NOx concentrations observed
0
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Co
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Date
M25 (B) - July 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3
Valid: low NOx concentrations observed
Client Project Report
TRL 41 CPR1094 (II)
Figure 2.29: M25 (B) running 8-hour mean concentration of ozone August 2009
Figure 2.30: M25 (B) running 8-hour mean concentration of ozone September
2009
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Co
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ntr
atio
n (
µg/
m3)
Date
M25 (B) - August 2009Running 8-hour mean concentration of ozone
UK Air Quality objective:100 µg/m3
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Co
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ntr
atio
n (
µg/
m3)
Date
M25 (B) - September 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3
Valid: low NOx concentrations observed
Valid: high NOx concentrations observed
Client Project Report
TRL 42 CPR1094 (II)
Figure 2.31: M25 (B) running 8-hour mean concentration of ozone October
2009
Figure 2.32: M25 (B) running 8-hour mean concentration of ozone November
2009
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Co
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ntr
atio
n (
µg/
m3)
Date
M25 (B) - October 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3
Valid: low NOx concentrations observedValid: low NOx concentrations observed
Valid: high NOx concentrations observedValid: high NOx concentrations observed
0
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Co
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ntr
atio
n (
µg/
m3)
Date
M25 (B) - November 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3
Power failure
Power failure
Valid: high NOx concentrations observed
Client Project Report
TRL 43 CPR1094 (II)
Figure 2.33: M25 (B) running 8-hour mean concentration of ozone December
2009
2.4 M60
Figure 2.34: M60 running 8-hour mean concentration of ozone January 2009
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - December 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3
Power failure Power failure
Valid: high NOx concentrations observed
Valid: high NOx concentrations observed
0
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - January 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3
Power failureValid: high NOx concentrations observed
Client Project Report
TRL 44 CPR1094 (II)
Figure 2.35: M60 running 8-hour mean concentration of ozone February 2009
Figure 2.36: M60 running 8-hour mean concentration of ozone March 2009
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - February 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3
0
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180
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - March 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3
Client Project Report
TRL 45 CPR1094 (II)
Figure 2.37: M60 running 8-hour mean concentration of ozone April 2009
Figure 2.38: M60 running 8-hour mean concentration of ozone May 2009
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - April 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3
Valid: low NOx concentrations observed
0
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - May 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3Valid: low NOx concentrations observed
Client Project Report
TRL 46 CPR1094 (II)
Figure 2.39: M60 running 8-hour mean concentration of ozone June 2009
Figure 2.40: M60 running 8-hour mean concentration of ozone July 2009
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - June 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3
Valid: low NOx concentrations observed
0
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - July 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3
Valid: low NOx concentrations observed
Client Project Report
TRL 47 CPR1094 (II)
Figure 2.41: M60 running 8-hour mean concentration of ozone August 2009
Figure 2.42: M60 running 8-hour mean concentration of ozone September 2009
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - August 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3
0
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - September 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3
Client Project Report
TRL 48 CPR1094 (II)
Figure 2.43: M60 running 8-hour mean concentration of ozone October 2009
Figure 2.44: M60 running 8-hour mean concentration of ozone November 2009
0
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - October 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3
0
20
40
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Date
M60 - November 2009Running 8-hour mean concentration of ozone
UK Air Quality objective: 100 µg/m3
Valid: low NOx concentrations observed
Client Project Report
TRL 49 CPR1094 (II)
Figure 2.45: M60 running 8-hour mean concentration of ozone December 2009
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M60 - December 2009Running 8-hour mean concentration of ozone
Valid: low NOx concentrations observed
UK Air Quality objective: 100 µg/m3
Valid: low NOx concentrations observed
Client Project Report
TRL 50 CPR1094 (II)
3 Sulphur dioxide
3.1 15-minute mean
3.1.1 M25 (B)
Figure 3.1: M25 (B) 15-minute mean concentration of sulphur dioxide January
2009
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Date
M25(B) - January 200915-minute mean concentration of sulphur dioxide
UK Air Quality objective: 266 µg/m3
Power failure
Client Project Report
TRL 51 CPR1094 (II)
Figure 3.2: M25 (B) 15-minute mean concentration of sulphur dioxide February
2009
Figure 3.3: M25 (B) 15-minute mean concentration of sulphur dioxide March
2009
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n (
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Date
M25 (B) - February 200915-minute mean concentration of sulphur dioxide
UK Air Quality objective: 266 µg/m3
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Date
M25 (B) - March 200915-minute mean concentration of sulphur dioxide
UK Air Quality objective: 266 µg/m3
Client Project Report
TRL 52 CPR1094 (II)
Figure 3.4: M25 (B) 15-minute mean concentration of sulphur dioxide April
2009
Figure 3.5: M25 (B) 15-minute mean concentration of sulphur dioxide May 2009
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n (
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Date
M25 (B) - April 200915-minute mean concentration of sulphur dioxide
UK Air Quality objective: 266 µg/m3
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n (
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Date
M25 (B) - May 200915-minute mean concentration of sulphur dioxide
UK Air Quality objective: 266 µg/m3
Client Project Report
TRL 53 CPR1094 (II)
Figure 3.6: M25 (B) 15-minute mean concentration of sulphur dioxide June
2009
Figure 3.7: M25 (B) 15-minute mean concentration of sulphur dioxide July 2009
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Date
M25 (B) - June 200915-minute mean concentration of sulphur dioxide
UK Air Quality objective: 266 µg/m3
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n (
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Date
M25 (B) - July 200915-minute mean concentration of sulphur dioxide
UK Air Quality objective: 266 µg/m3
Client Project Report
TRL 54 CPR1094 (II)
Figure 3.8: M25 (B) 15-minute mean concentration of sulphur dioxide August
2009
Figure 3.9: M25 (B) 15-minute mean concentration of sulphur dioxide
September 2009
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Co
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)
Date
M25 (B) - August 200915-minute mean concentration of sulphur dioxide
UK Air Quality objective: 266 µg/m3
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Co
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Date
M25 (B) - September 200915-minute mean concentration of sulphur dioxide
UK Air Quality objective: 266 µg/m3
Client Project Report
TRL 55 CPR1094 (II)
Figure 3.10: M25 (B) 15-minute mean concentration of sulphur dioxide October
2009
Figure 3.11: M25 (B) 15-minute mean concentration of sulphur dioxide
November 2009
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Date
M25 (B) - October 200915-minute mean concentration of sulphur dioxide
UK Air Quality objective: 266 µg/m3
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Co
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Date
M25 (B) - November 200915-minute mean concentration of sulphur dioxide
UK Air Quality objective: 266 µg/m3
Power failurePower failure
Client Project Report
TRL 56 CPR1094 (II)
Figure 3.12: M25 (B) 15-minute mean concentration of sulphur dioxide
December 2009
3.1.2 M60
Figure 3.13: M60 15-minute mean concentration of sulphur dioxide January
2009
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Date
M25 (B) - December 200915-minute mean concentration of sulphur dioxide
UK Air Quality objective: 266 µg/m3
Power failure Power failure
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Date
M60 - January 200915-minute mean concentration of sulphur dioxide
UK Air Quality objective: 266 µg/m3
Instrument faulltPower failure
Client Project Report
TRL 57 CPR1094 (II)
Figure 3.14: M60 15-minute mean concentration of sulphur dioxide February
2009
Figure 3.15: M60 15-minute mean concentration of sulphur dioxide March 2009
014284256708498
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Date
M60 - February 200915-minute mean concentration of sulphur dioxide
UK Air Quality objective: 266 µg/m3
Span and zero calibration
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Co
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Date
M60 - March 200915-minute mean concentration of sulphur dioxide
UK Air Quality objective: 266 µg/m3
Client Project Report
TRL 58 CPR1094 (II)
Figure 3.16: M60 15-minute mean concentration of sulphur dioxide April 2009
Figure 3.17: M60 15-minute mean concentration of sulphur dioxide May 2009
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Co
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Date
M60 - April 200915-minute mean concentration of sulphur dioxide
UK Air Quality objective: 266 µg/m3
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Co
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ntr
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n (
µg/
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Date
M60 - May 200915-minute mean concentration of sulphur dioxide
UK Air Quality objective: 266 µg/m3
Client Project Report
TRL 59 CPR1094 (II)
Figure 3.18: M60 15-minute mean concentration of sulphur dioxide June 2009
Figure 3.19: M60 15-minute mean concentration of sulphur dioxide July 2009
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Co
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ntr
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Date
M60 - June 200915-minute mean concentration of sulphur dioxide
UK Air Quality objective: 266 µg/m3
Instrument fault
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Co
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ntr
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n (
µg/
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Date
M60 - July 200915-minute mean concentration of sulphur dioxide
UK Air Quality objective: 266 µg/m3
Client Project Report
TRL 60 CPR1094 (II)
Figure 3.20: M60 15-minute mean concentration of sulphur dioxide August
2009
Figure 3.21: M60 15-minute mean concentration of sulphur dioxide September
2009
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Co
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ntr
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n (
µg/
m3)
Date
M60 - August 200915-minute mean concentration of sulphur dioxide
UK Air Quality objective: 266 µg/m3
Instrument fault
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Co
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ntr
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n (
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3)
Date
M60 - September 200915-minute mean concentration of sulphur dioxide
UK Air Quality objective: 266 µg/m3
Instrument fault
Span and zero calibration
Client Project Report
TRL 61 CPR1094 (II)
Figure 3.22: M60 15-minute mean concentration of sulphur dioxide October
2009
Figure 3.23: M60 15-minute mean concentration of sulphur dioxide November
2009
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Co
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ntr
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n (
g/m
3)
Date
M60 - October 200915-minute mean concentration of sulphur dioxide
UK Air Quality objective: 266 µg/m3
Instrument fault
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Co
nce
ntr
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n (
g/m
3)
Date
M60 - November 200915-minute mean concentration of sulphur dioxide
UK Air Quality objective: 266 µg/m3
Client Project Report
TRL 62 CPR1094 (II)
Figure 3.24: M60 15-minute mean concentration of sulphur dioxide December
2009
3.2 1-hour mean
3.2.1 M25 (B)
Figure 3.25: M25 (B) 1-hour mean concentration of sulphur dioxide January
2009
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Co
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Date
M25 (B) - January 20091-hour mean concentration of sulphur dioxide
UK Air Quality objective: 350 µg/m3
Power failure
Client Project Report
TRL 63 CPR1094 (II)
Figure 3.26: M25 (B) 1-hour mean concentration of sulphur dioxide February
2009
Figure 3.27: M25 (B) 1-hour mean concentration of sulphur dioxide March 2009
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Co
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m3)
Date
M25 (B) - February 20091-hour mean concentration of sulphur dioxide
UK Air Quality objective: 350 µg/m3
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Co
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n (
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m3)
Date
M25 (B) - March 20091-hour mean concentration of sulphur dioxide
UK Air Quality objective: 350 µg/m3
Client Project Report
TRL 64 CPR1094 (II)
Figure 3.28: M25 (B) 1-hour mean concentration of sulphur dioxide April 2009
Figure 3.29: M25 (B) 1-hour mean concentration of sulphur dioxide May 2009
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Co
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ntr
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m3)
Date
M25 (B) - April 20091-hour mean concentration of sulphur dioxide
UK Air Quality objective: 350 µg/m3
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Co
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ntr
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n (
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m3)
Date
M25 (B) - May 20091-hour mean concentration of sulphur dioxide
UK Air Quality objective: 350 µg/m3
Client Project Report
TRL 65 CPR1094 (II)
Figure 3.30: M25 (B) 1-hour mean concentration of sulphur dioxide June 2009
Figure 3.31: M25 (B) 1-hour mean concentration of sulphur dioxide July 2009
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - June 20091-hour mean concentration of sulphur dioxide
UK Air Quality objective: 350 µg/m3
0
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - July 20091-hour mean concentration of sulphur dioxide
UK Air Quality objective: 350 µg/m3
Client Project Report
TRL 66 CPR1094 (II)
Figure 3.32: M25 (B) 1-hour mean concentration of sulphur dioxide August
2009
Figure 3.33: M25 (B) 1-hour mean concentration of sulphur dioxide September
2009
0
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - August 20091-hour mean concentration of sulphur dioxide
UK Air Quality objective: 350 µg/m3
0
50
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400
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - September 20091-hour mean concentration of sulphur dioxide
UK Air Quality objective: 350 µg/m3
Client Project Report
TRL 67 CPR1094 (II)
Figure 3.34: M25 (B) 1-hour mean concentration of sulphur dioxide October
2009
Figure 3.35: M25 (B) 1-hour mean concentration of sulphur dioxide November
2009
0
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - October 20091-hour mean concentration of sulphur dioxide
UK Air Quality objective: 350 µg/m3
0
50
100
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400
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - November 20091-hour mean concentration of sulphur dioxide
UK Air Quality objective: 350 µg/m3
Power failure Power failure
Client Project Report
TRL 68 CPR1094 (II)
Figure 3.36: M25 (B) 1-hour mean concentration of sulphur dioxide December
2009
3.2.2 M60
Figure 3.37: M60 1-hour mean concentration of sulphur dioxide January 2009
0
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400
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31
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - December 20091-hour mean concentration of sulphurdioxide
UK Air Quality objective: 350 µg/m3
Power failure Power failure
0
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31
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - January 20091-hour mean concentration of sulphur dioxide
UK Air Quality objective: 350 µg/m3
Power failureInstrument fault
Client Project Report
TRL 69 CPR1094 (II)
Figure 3.38: M60 1-hour mean concentration of sulphur dioxide February 2009
Figure 3.39: M60 1-hour mean concentration of sulphur dioxide March 2009
0
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400
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - February 20091-hour mean concentration of sulphur dioxide
UK Air Quality objective: 350 µg/m3
Span and zero calibration
0
50
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400
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31
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - March 20091-hour mean concentration of sulphur dioxide
UK Air Quality objective: 350 µg/m3
Span and zero calibration
Client Project Report
TRL 70 CPR1094 (II)
Figure 3.40: M60 1-hour mean concentration of sulphur dioxide April 2009
Figure 3.41: M60 1-hour mean concentration of sulphur dioxide May 2009
0
50
100
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400
01
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - April 20091-hour mean concentration of sulphur dioxide
UK Air Quality objective: 350 µg/m3
Span and zero calibration
0
50
100
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400
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31
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - May 20091-hour mean concentration of sulphur dioxide
UK Air Quality objective: 350 µg/m3
Client Project Report
TRL 71 CPR1094 (II)
Figure 3.42: M60 1-hour mean concentration of sulphur dioxide June 2009
Figure 3.43: M60 1-hour mean concentration of sulphur dioxide July 2009
0
50
100
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200
250
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350
400
01
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - June 20091-hour mean concentration of sulphur dioxide
UK Air Quality objective: 350 µg/m3
Instrument faultSpan and zero calibration
0
50
100
150
200
250
300
350
400
01
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31
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - July 20091-hour mean concentration of sulphur dioxide
UK Air Quality objective: 350 µg/m3
Client Project Report
TRL 72 CPR1094 (II)
Figure 3.44: M60 1-hour mean concentration of sulphur dioxide August 2009
Figure 3.45: M60 1-hour mean concentration of sulphur dioxide September
2009
0
50
100
150
200
250
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350
400
01
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31
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - August 20091-hour mean concentration of sulphur dioxide
UK Air Quality objective: 350 µg/m3
Instrument fault
0
50
100
150
200
250
300
350
400
01
/09
/20
09
02
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - September 20091-hour mean concentration of sulphur dioxide
UK Air Quality objective: 350 µg/m3
Instrument faultSpan and zero calibration
Client Project Report
TRL 73 CPR1094 (II)
Figure 3.46: M60 1-hour mean concentration of sulphur dioxide October 2009
Figure 3.47: M60 1-hour mean concentration of sulphur dioxide November 2009
0
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - October 20091-hour mean concentration of sulphur dioxide
UK Air Quality objective: 350 µg/m3
0
50
100
150
200
250
300
350
400
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - November 20091-hour mean concentration of sulphur dioxide
UK Air Quality objective: 350 µg/m3
Client Project Report
TRL 74 CPR1094 (II)
Figure 3.48: M60 1-hour mean concentration of sulphur dioxide December 2009
0
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400
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - December 20091-hour mean concentration of sulphurdioxide
UK Air Quality objective: 350 µg/m3
Client Project Report
TRL 75 CPR1094 (II)
3.3 24-hour mean
3.3.1 M25 (B)
Figure 3.49: M25 (B) 24-hour mean concentration of sulphur dioxide January
2009
0
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100
125
1500
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - January 200924-hour mean concentration of sulphur dioxide
UK Air Quality objective: 125 µg/m3
Power failure
Client Project Report
TRL 76 CPR1094 (II)
Figure 3.50: M25 (B) 24-hour mean concentration of sulphur dioxide February
2009
Figure 3.51: M25 (B) 24-hour mean concentration of sulphur dioxide March
2009
0
25
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75
100
125
150
01
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28
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - February 200924-hour mean concentration of sulphur dioxide
UK Air Quality objective: 125 µg/m3
0
25
50
75
100
125
150
01
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31
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - March 200924-hour mean concentration of sulphur dioxide
UK Air Quality objective: 125 µg/m3
Client Project Report
TRL 77 CPR1094 (II)
Figure 3.52: M25 (B) 24-hour mean concentration of sulphur dioxide April 2009
Figure 3.53: M25 (B) 24-hour mean concentration of sulphur dioxide May 2009
0
25
50
75
100
125
150
01
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - April 200924-hour mean concentration of sulphur dioxide
UK Air Quality objective: 125 µg/m3
0
25
50
75
100
125
150
01
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31
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - May 200924-hour mean concentration of sulphur dioxide
UK Air Quality objective: 125 µg/m3
Client Project Report
TRL 78 CPR1094 (II)
Figure 3.54: M25 (B) 24-hour mean concentration of sulphur dioxide June 2009
Figure 3.55: M25 (B) 24-hour mean concentration of sulphur dioxide July 2009
0
25
50
75
100
125
150
01
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - June 200924-hour mean concentration of sulphur dioxide
UK Air Quality objective: 125 µg/m3
0
25
50
75
100
125
150
01
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31
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - July 200924-hour mean concentration of sulphur dioxide
UK Air Quality objective: 125 µg/m3
Client Project Report
TRL 79 CPR1094 (II)
Figure 3.56: M25 (B) 24-hour mean concentration of sulphur dioxide August
2009
Figure 3.57: M25 (B) 24-hour mean concentration of sulphur dioxide September
2009
0
25
50
75
100
125
150
01
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31
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - August 200924-hour mean concentration of sulphur dioxide
UK Air Quality objective: 125 µg/m3
0
25
50
75
100
125
150
01
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02
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30
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - September 200924-hour mean concentration of sulphur dioxide
UK Air Quality objective: 125 µg/m3
Client Project Report
TRL 80 CPR1094 (II)
Figure 3.58: M25 (B) 24-hour mean concentration of sulphur dioxide October
2009
Figure 3.59: M25 (B) 24-hour mean concentration of sulphur dioxide November
2009
0
25
50
75
100
125
150
01
/10
/20
09
02
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09
03
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30
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31
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - October 200924-hour mean concentration of sulphur dioxide
UK Air Quality objective: 125 µg/m3
0
25
50
75
100
125
150
01
/11
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09
02
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09
03
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30
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - November 200924-hour mean concentration of sulphur dioxide
UK Air Quality objective: 125 µg/m3
Power failure
Client Project Report
TRL 81 CPR1094 (II)
Figure 3.60: M25 (B) 24-hour mean concentration of sulphur dioxide December
2009
3.3.2 M60
Figure 3.61: M60 24-hour mean concentration of sulphur dioxide January 2009
0
25
50
75
100
125
150
01
/12
/20
09
02
/12
/20
09
03
/12
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - December 200924-hour mean concentration of sulphur dioxide
UK Air Quality objective: 125 µg/m3
Power failure
0
25
50
75
100
125
150
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - January 200924-hour mean concentration of sulphur dioxide
UK Air Quality objective: 125 µg/m3
Power failure
Client Project Report
TRL 82 CPR1094 (II)
Figure 3.62: M60 24-hour mean concentration of sulphur dioxide February 2009
Figure 3.63: M60 24-hour mean concentration of sulphur dioxide March 2009
0
25
50
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100
125
150
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - February 200924-hour mean concentration of sulphur dioxide
UK Air Quality objective: 125 µg/m3
0
25
50
75
100
125
150
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - March 200924-hour mean concentration of sulphur dioxide
UK Air Quality objective: 125 µg/m3
Client Project Report
TRL 83 CPR1094 (II)
Figure 3.64: M60 24-hour mean concentration of sulphur dioxide April 2009
Figure 3.65: M60 24-hour mean concentration of sulphur dioxide May 2009
0
25
50
75
100
125
150
01
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30
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - April 200924-hour mean concentration of sulphur dioxide
UK Air Quality objective: 125 µg/m3
0
25
50
75
100
125
150
01
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31
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - May 200924-hour mean concentration of sulphur dioxide
UK Air Quality objective: 125 µg/m3
Client Project Report
TRL 84 CPR1094 (II)
Figure 3.66: M60 24-hour mean concentration of sulphur dioxide June 2009
Figure 3.67: M60 24-hour mean concentration of sulphur dioxide July 2009
0
25
50
75
100
125
150
01
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30
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - June 200924-hour mean concentration of sulphur dioxide
UK Air Quality objective: 125 µg/m3
Instrument fault
0
25
50
75
100
125
150
01
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02
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31
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - July 200924-hour mean concentration of sulphur dioxide
UK Air Quality objective: 125 µg/m3
Client Project Report
TRL 85 CPR1094 (II)
Figure 3.68: M60 24-hour mean concentration of sulphur dioxide August 2009
Figure 3.69: M60 24-hour mean concentration of sulphur dioxide September
2009
0
25
50
75
100
125
150
01
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02
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31
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - August 200924-hour mean concentration of sulphur dioxide
UK Air Quality objective: 125 µg/m3
Instrument fault
0
25
50
75
100
125
150
01
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02
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - September 200924-hour mean concentration of sulphur dioxide
UK Air Quality objective: 125 µg/m3
Instrument fault
Client Project Report
TRL 86 CPR1094 (II)
Figure 3.70: M60 24-hour mean concentration of sulphur dioxide October 2009
Figure 3.71: M60 24-hour mean concentration of sulphur dioxide November
2009
0
25
50
75
100
125
150
01
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02
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31
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - October 200924-hour mean concentration of sulphur dioxide
UK Air Quality objective: 125 µg/m3
0
25
50
75
100
125
150
01
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02
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - November 200924-hour mean concentration of sulphur dioxide
UK Air Quality objective: 125 µg/m3
Client Project Report
TRL 87 CPR1094 (II)
Figure 3.72: M60 24-hour mean concentration of sulphur dioxide December
2009
0
25
50
75
100
125
150
01
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09
02
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03
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31
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - December 200924-hour mean concentration of sulphur dioxide
UK Air Quality objective: 125 µg/m3
Client Project Report
TRL 88 CPR1094 (II)
4 Carbon monoxide
4.1 M4 (Theale 2)
Figure 4.1: M4 (Theale 2) running 8-hour mean concentration of carbon
monoxide January 2009
0
1
2
3
4
5
6
7
8
9
10
11
12
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09
Co
nce
ntr
atio
n (
mg/
m3)
Date
M4 (Theale 2) - January 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
Instrument fault - removed from site for repairInstrument re-installed
Client Project Report
TRL 89 CPR1094 (II)
Figure 4.2: M4 (Theale 2) running 8-hour mean concentration of carbon
monoxide February 2009
Figure 4.3: M4 (Theale 2) running 8-hour mean concentration of carbon
monoxide March 2009
0
1
2
3
4
5
6
7
8
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12
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28
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09
Co
nce
ntr
atio
n (
mg/
m3)
Date
M4 (Theale 2) - February 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
0
1
2
3
4
5
6
7
8
9
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11
12
01
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Co
nce
ntr
atio
n (
mg/
m3)
Date
M4 (Theale 2) - March 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
Client Project Report
TRL 90 CPR1094 (II)
Figure 4.4: M4 (Theale 2) running 8-hour mean concentration of carbon
monoxide April 2009
Figure 4.5: M4 (Theale 2) running 8-hour mean concentration of carbon
monoxide May 2009
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Co
nce
ntr
atio
n (
mg/
m3)
Date
M4 (Theale 2) - April 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
0
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Co
nce
ntr
atio
n (
mg/
m3)
Date
M4 (Theale 2) - May 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
Client Project Report
TRL 91 CPR1094 (II)
Figure 4.6: M4 (Theale 2) running 8-hour mean concentration of carbon
monoxide June 2009
Figure 4.7: M4 (Theale 2) running 8-hour mean concentration of carbon
monoxide July 2009
0
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Co
nce
ntr
atio
n (
mg/
m3)
Date
M4 (Theale 2) - June 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
0
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Co
nce
ntr
atio
n (
mg/
m3)
Date
M4 (Theale 2) - July 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
Instrument fault
Client Project Report
TRL 92 CPR1094 (II)
Figure 4.8: M4 (Theale 2) running 8-hour mean concentration of carbon
monoxide August 2009
Figure 4.9: M4 (Theale 2) running 8-hour mean concentration of carbon
monoxide September 2009
0
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Co
nce
ntr
atio
n (
mg/
m3)
Date
M4 (Theale 2) - August 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
0
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Co
nce
ntr
atio
n (
mg/
m3)
Date
M4 (Theale 2) - September 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
Client Project Report
TRL 93 CPR1094 (II)
Figure 4.10: M4 (Theale 2) running 8-hour mean concentration of carbon
monoxide October 2009
Figure 4.11: M4 (Theale 2) running 8-hour mean concentration of carbon
monoxide November 2009
0
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Co
nce
ntr
atio
n (
mg/
m3)
Date
M4 (Theale 2) - October 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
Instrument fault
0
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Co
nce
ntr
atio
n (
mg/
m3)
Date
M4 (Theale 2) - November 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
Client Project Report
TRL 94 CPR1094 (II)
Figure 4.12: M4 (Theale 2) running 8-hour mean concentration of carbon
monoxide December 2009
4.2 Bell Common Tunnel
Figure 4.13: Bell Common Tunnel running 8-hour mean concentration of carbon
monoxide January 2009
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Co
nce
ntr
atio
n (
mg/
m3)
Date
M4 (Theale 2) - December 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
0
1
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Co
nce
ntr
atio
n (
mg/
m3)
Date
Bell Common Tunnel - January 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
Client Project Report
TRL 95 CPR1094 (II)
Figure 4.14: Bell Common Tunnel running 8-hour mean concentration of carbon
monoxide February 2009
Figure 4.15: Bell Common Tunnel running 8-hour mean concentration of carbon
monoxide March 2009
0
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09
Co
nce
ntr
atio
n (
mg/
m3)
Date
Bell Common Tunnel - February 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
0
1
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09
Co
nce
ntr
atio
n (
mg/
m3)
Date
Bell Common Tunnel - March 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
Instrument faultRemoved from site for repair
Client Project Report
TRL 96 CPR1094 (II)
Figure 4.16: Bell Common Tunnel running 8-hour mean concentration of carbon
monoxide April 2009
Figure 4.17: Bell Common Tunnel running 8-hour mean concentration of carbon
monoxide May 2009
0
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Co
nce
ntr
atio
n (
mg/
m3)
Date
Bell Common Tunnel - April 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
Instrument faultInstrument re-installed
0
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Date
Bell Common Tunnel - May 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
Instrument faultRemoved from site for repair
Client Project Report
TRL 97 CPR1094 (II)
Figure 4.18: Bell Common Tunnel running 8-hour mean concentration of carbon
monoxide June 2009
Figure 4.19: Bell Common Tunnel running 8-hour mean concentration of carbon
monoxide July 2009
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Date
Bell Common Tunnel - June 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
Instrument removed from site
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Date
Bell Common Tunnel - July 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
Instrument removed from site
Client Project Report
TRL 98 CPR1094 (II)
Figure 4.20: Bell Common Tunnel running 8-hour mean concentration of carbon
monoxide August 2009
Figure 4.21: Bell Common Tunnel running 8-hour mean concentration of carbon
monoxide September 2009
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Co
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ntr
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n (
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Date
Bell Common Tunnel - August 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
Instrument re-installed
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Co
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ntr
atio
n (
mg/
m3)
Date
Bell Common Tunnel - September 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
Client Project Report
TRL 99 CPR1094 (II)
4.3 M25 (B)
Figure 4.22: M25 (B) running 8-hour mean concentration of carbon monoxide
January 2009
Figure 4.23: M25 (B) running 8-hour mean concentration of carbon monoxide
February 2009
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Co
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ntr
atio
n (
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Date
M25 (B) - January 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
Power failure
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Co
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ntr
atio
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m3)
Date
M25 (B) - February 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
Client Project Report
TRL 100 CPR1094 (II)
Figure 4.24: M25 (B) running 8-hour mean concentration of carbon monoxide
March 2009
Figure 4.25: M25 (B) running 8-hour mean concentration of carbon monoxide
April 2009
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Co
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atio
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Date
M25 (B) - March 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
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Co
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ntr
atio
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Date
M25 (B) - April 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
Client Project Report
TRL 101 CPR1094 (II)
Figure 4.26: M25 (B) running 8-hour mean concentration of carbon monoxide
May 2009
Figure 4.27: M25 (B) running 8-hour mean concentration of carbon monoxide
June 2009
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Co
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atio
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Date
M25 (B) - May 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
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Co
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atio
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Date
M25 (B) - June 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
Client Project Report
TRL 102 CPR1094 (II)
Figure 4.28: M25 (B) running 8-hour mean concentration of carbon monoxide
July 2009
Figure 4.29: M25 (B) running 8-hour mean concentration of carbon monoxide
August 2009
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Co
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atio
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Date
M25 (B) - July 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
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Co
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ntr
atio
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Date
M25 (B) - August 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
Client Project Report
TRL 103 CPR1094 (II)
Figure 4.30: M25 (B) running 8-hour mean concentration of carbon monoxide
September 2009
Figure 4.31: M25 (B) running 8-hour mean concentration of carbon monoxide
October 2009
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Co
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atio
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Date
M25 (B) - September 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
0
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Co
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ntr
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Date
M25 (B) - October 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
Client Project Report
TRL 104 CPR1094 (II)
Figure 4.32: M25 (B) running 8-hour mean concentration of carbon monoxide
November 2009
Figure 4.33: M25 (B) running 8-hour mean concentration of carbon monoxide
December 2009
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Date
M25 (B) - November 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
Power failurePower failure
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ntr
atio
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Date
M25 (B) - December 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
Power failure
Power failure
Client Project Report
TRL 105 CPR1094 (II)
4.4 M60
Figure 4.34: M60 running 8-hour mean concentration of carbon monoxide
January 2009
Figure 4.35: M60 running 8-hour mean concentration of carbon monoxide
February 2009
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Co
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ntr
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n (
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Date
M60 - January 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
Power failure
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Co
nce
ntr
atio
n (
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Date
M60 - February 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
Client Project Report
TRL 106 CPR1094 (II)
Figure 4.36: M60 running 8-hour mean concentration of carbon monoxide
March 2009
Figure 4.37: M60 running 8-hour mean concentration of carbon monoxide April
2009
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Co
nce
ntr
atio
n (
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Date
M60 - March 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
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Co
nce
ntr
atio
n (
mg/
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Date
M60 - April 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
Client Project Report
TRL 107 CPR1094 (II)
Figure 4.38: M60 running 8-hour mean concentration of carbon monoxide May
2009
Figure 4.39: M60 running 8-hour mean concentration of carbon monoxide June
2009
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Co
nce
ntr
atio
n (
mg/
m3)
Date
M60 - May 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
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Co
nce
ntr
atio
n (
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m3)
Date
M60 - June 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
Client Project Report
TRL 108 CPR1094 (II)
Figure 4.40: M60 running 8-hour mean concentration of carbon monoxide July
2009
Figure 4.41: M60 running 8-hour mean concentration of carbon monoxide
August 2009
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Co
nce
ntr
atio
n (
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m3)
Date
M60 - July 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
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Co
nce
ntr
atio
n (
mg/
m3)
Date
M60 - August 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
Client Project Report
TRL 109 CPR1094 (II)
Figure 4.42: M60 running 8-hour mean concentration of carbon monoxide
September 2009
Figure 4.43: M60 running 8-hour mean concentration of carbon monoxide
October 2009
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Co
nce
ntr
atio
n (
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m3)
Date
M60 - September 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
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Co
nce
ntr
atio
n (
mg/
m3)
Date
M60 - October 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
Client Project Report
TRL 110 CPR1094 (II)
Figure 4.44: M60 running 8-hour mean concentration of carbon monoxide
November 2009
Figure 4.45: M60 running 8-hour mean concentration of carbon monoxide
December 2009
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Co
nce
ntr
atio
n (
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Date
M60 - November 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
0
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Co
nce
ntr
atio
n (
mg/
m3)
Date
M60 - December 2009Running 8-hour mean concentration of carbon dioxide
UK Air Quality objective: 10 mg/m3
Client Project Report
TRL 111 CPR1094 (II)
5 Particulate Matter
5.1 M4 (Theale 2)
Figure 5.1: M4 (Theale 2) 24-hour mean concentration of particulate matter
January 2009
0
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M4 (Theale 2) - January 200924-hour mean concentration of PM10
UK Air Quality objective: 50 µg/m3
Client Project Report
TRL 112 CPR1094 (II)
Figure 5.2: M4 (Theale 2) 24-hour mean concentration of particulate matter
February 2009
Figure 5.3: M4 (Theale 2) 24-hour mean concentration of particulate matter
March 2009
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M4 (Theale 2) - February 200924-hour mean concentration of PM10
UK Air Quality objective: 50 µg/m3
0
10
20
30
40
50
60
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90
100
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31
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M4 (Theale 2) - March 200924-hour mean concentration of PM10
UK Air Quality objective: 50 µg/m3
Client Project Report
TRL 113 CPR1094 (II)
Figure 5.4: M4 (Theale 2) 24-hour mean concentration of particulate matter
April 2009
Figure 5.5: M4 (Theale 2) 24-hour mean concentration of particulate matter
May 2009
0
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20
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90
100
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30
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/20
09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M4 (Theale 2) - April 200924-hour mean concentration of PM10
UK Air Quality objective: 50 µg/m3
0
10
20
30
40
50
60
70
80
90
100
01
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31
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M4 (Theale 2) - May 200924-hour mean concentration of PM10
UK Air Quality objective: 50 µg/m3
Instrument fault
Client Project Report
TRL 114 CPR1094 (II)
Figure 5.6: M4 (Theale 2) 24-hour mean concentration of particulate matter
June 2009
Figure 5.7: M4 (Theale 2) 24-hour mean concentration of particulate matter
July 2009
0
10
20
30
40
50
60
70
80
90
100
01
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30
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M4 (Theale 2) - June 200924-hour mean concentration of PM10
UK Air Quality objective: 50 µg/m3
0
10
20
30
40
50
60
70
80
90
100
01
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31
/07
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M4 (Theale 2) - July 200924-hour mean concentration of PM10
UK Air Quality objective: 50 µg/m3
Client Project Report
TRL 115 CPR1094 (II)
Figure 5.8: M4 (Theale 2) 24-hour mean concentration of particulate matter
August 2009
Figure 5.9: M4 (Theale 2) 24-hour mean concentration of particulate matter
September 2009
0
10
20
30
40
50
60
70
80
90
100
01
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02
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31
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M4 (Theale 2) - August 200924-hour mean concentration of PM10
UK Air Quality objective: 50 µg/m3
0
10
20
30
40
50
60
70
80
90
100
01
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30
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M4 (Theale 2) - September 200924-hour mean concentration of PM10
UK Air Quality objective: 50 µg/m3
Client Project Report
TRL 116 CPR1094 (II)
Figure 5.10: M4 (Theale 2) 24-hour mean concentration of particulate matter
October 2009
Figure 5.11: M4 (Theale 2) 24-hour mean concentration of particulate matter
November 2009
0
10
20
30
40
50
60
70
80
90
100
01
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02
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31
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M4 (Theale 2) - October 200924-hour mean concentration of PM10
UK Air Quality objective: 50 µg/m3
0
10
20
30
40
50
60
70
80
90
100
01
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02
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M4 (Theale 2) - November 200924-hour mean concentration of PM10
UK Air Quality objective: 50 µg/m3
Client Project Report
TRL 117 CPR1094 (II)
Figure 5.12: M4 (Theale 2) 24-hour mean concentration of particulate matter
December 2009
0
10
20
30
40
50
60
70
80
90
100
01
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02
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31
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M4 (Theale 2) - December 200924-hour mean concentration of PM10
UK Air Quality objective: 50 µg/m3
Client Project Report
TRL 118 CPR1094 (II)
5.2 M25 (B)
Figure 5.13: M25 (B) 24-hour mean concentration of particulate matter January
2009
0
10
20
30
40
50
60
70
80
90
100
01
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02
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - January 200924-hour mean concentration of PM10
UK Air Quality objective: 50 µg/m3
Power failure
Client Project Report
TRL 119 CPR1094 (II)
Figure 5.14: M25 (B) 24-hour mean concentration of particulate matter
February 2009
Figure 5.15: M25 (B) 24-hour mean concentration of particulate matter March
2009
0
10
20
30
40
50
60
70
80
90
100
01
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27
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09
28
/02
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - February 200924-hour mean concentration of PM10
UK Air Quality objective: 50 µg/m3
0
10
20
30
40
50
60
70
80
90
100
01
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30
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31
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - March 200924-hour mean concentration of PM10
UK Air Quality objective: 50 µg/m3
Client Project Report
TRL 120 CPR1094 (II)
Figure 5.16: M25 (B) 24-hour mean concentration of particulate matter April
2009
Figure 5.17: M25 (B) 24-hour mean concentration of particulate matter May
2009
0
10
20
30
40
50
60
70
80
90
100
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - April 200924-hour mean concentration of PM10
UK Air Quality objective: 50 µg/m3
0
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - May 200924-hour mean concentration of PM10
UK Air Quality objective: 50 µg/m3
Client Project Report
TRL 121 CPR1094 (II)
Figure 5.18: M25 (B) 24-hour mean concentration of particulate matter June
2009
Figure 5.19: M25 (B) 24-hour mean concentration of particulate matter July
2009
0
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20
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40
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90
100
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - June 200924-hour mean concentration of PM10
UK Air Quality objective: 50 µg/m3
0
10
20
30
40
50
60
70
80
90
100
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31
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - July 200924-hour mean concentration of PM10
UK Air Quality objective: 50 µg/m3
Client Project Report
TRL 122 CPR1094 (II)
Figure 5.20: M25 (B) 24-hour mean concentration of particulate matter August
2009
Figure 5.21: M25 (B) 24-hour mean concentration of particulate matter
September 2009
0
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20
30
40
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90
100
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31
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - August 200924-hour mean concentration of PM10
UK Air Quality objective: 50 µg/m3
0
10
20
30
40
50
60
70
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90
100
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30
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - September 200924-hour mean concentration of PM10
UK Air Quality objective: 50 µg/m3
Client Project Report
TRL 123 CPR1094 (II)
Figure 5.22: M25 (B) 24-hour mean concentration of particulate matter October
2009
Figure 5.23: M25 (B) 24-hour mean concentration of particulate matter
November 2009
0
10
20
30
40
50
60
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80
90
100
01
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31
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - October 200924-hour mean concentration of PM10
UK Air Quality objective: 50 µg/m3
0
10
20
30
40
50
60
70
80
90
100
01
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - November 200924-hour mean concentration of PM10
UK Air Quality objective: 50 µg/m3
Power failure
Client Project Report
TRL 124 CPR1094 (II)
Figure 5.24: M25 (B) 24-hour mean concentration of particulate matter
December 2009
0
10
20
30
40
50
60
70
80
90
100
01
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M25 (B) - December 200924-hour mean concentration of PM10
UK Air Quality objective: 50 µg/m3
Power failure
Client Project Report
TRL 125 CPR1094 (II)
5.3 M60
Figure 5.25: M60 24-hour mean concentration of particulate matter January
2009
0
10
20
30
40
50
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90
100
01
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - January 200924-hour mean concentration of PM10
UK Air Quality objective: 50 µg/m3
Power failure
Client Project Report
TRL 126 CPR1094 (II)
Figure 5.26: M60 24-hour mean concentration of particulate matter February
2009
Figure 5.27: M60 24-hour mean concentration of particulate matter March 2009
0
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100
01
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28
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - February 200924-hour mean concentration of PM10
UK Air Quality objective: 50 µg/m3
0
10
20
30
40
50
60
70
80
90
100
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31
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - March 200924-hour mean concentration of PM10
UK Air Quality objective: 50 µg/m3
Instrument fault
Client Project Report
TRL 127 CPR1094 (II)
Figure 5.28: M60 24-hour mean concentration of particulate matter April 2009
Figure 5.29: M60 24-hour mean concentration of particulate matter May 2009
0
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100
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - April 200924-hour mean concentration of PM10
UK Air Quality objective: 50 µg/m3
0
10
20
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40
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60
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90
100
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - May 200924-hour mean concentration of PM10
UK Air Quality objective: 50 µg/m3
Client Project Report
TRL 128 CPR1094 (II)
Figure 5.30: M60 24-hour mean concentration of particulate matter June 2009
Figure 5.31: M60 24-hour mean concentration of particulate matter July 2009
0
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100
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09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - June 200924-hour mean concentration of PM10
UK Air Quality objective: 50 µg/m3
0
10
20
30
40
50
60
70
80
90
100
01
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31
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/20
09
Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - July 200924-hour mean concentration of PM10
UK Air Quality objective: 50 µg/m3
Client Project Report
TRL 129 CPR1094 (II)
Figure 5.32: M60 24-hour mean concentration of particulate matter August
2009
Figure 5.33: M60 24-hour mean concentration of particulate matter September
2009
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n (
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m3)
Date
M60 - August 200924-hour mean concentration of PM10
UK Air Quality objective: 50 µg/m3
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - September 200924-hour mean concentration of PM10
UK Air Quality objective: 50 µg/m3
Client Project Report
TRL 130 CPR1094 (II)
Figure 5.34: M60 24-hour mean concentration of particulate matter October
2009
Figure 5.35: M60 24-hour mean concentration of particulate matter November
2009
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - October 200924-hour mean concentration of PM10
UK Air Quality objective: 50 µg/m3
0
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - November 200924-hour mean concentration of PM10
UK Air Quality objective: 50 µg/m3
Client Project Report
TRL 131 CPR1094 (II)
Figure 5.36: M60 24-hour mean concentration of particulate matter December
2009
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Co
nce
ntr
atio
n (
µg/
m3)
Date
M60 - December 200924-hour mean concentration of PM10
UK Air Quality objective: 50 µg/m3
Client Project Report
TRL 132 CPR1094 (II)
6 Historical compliance with air quality standards,
limits and objectives
6.1: Comparison with UK Air Quality Strategy objectives, M4 site
Pollutant CO NO2 O3 PM10 (TEOM*1.3) ▲
PM2.5
UK Air Quality
Objective
(Conc.
Threshold)
Max daily running
8-hr
mean (10
mg/m3
Maximum of 18
exceedances of
1-hr mean (200
µg/m3)
Annual
mean
(40
µg/m3)
Maximum of 10 exceedances of
running 8-hr
mean (100
µg/m3)
Maximum of 35
exceedances
of 24-hr mean
(50 μg/m3)
Annual
mean
(40
μg/m3)
Annual
mean
(25
μg/m3)
1992
(Aug – Dec) 0 17.9 - - -
1993 0 18.8 - - -
1994
(Jan to June) 3.6 0 32.6 3 - - -
1995 (Apr to Dec)
2.8 2 32.0 6 - - -
1996 3.5 8 48.3 0 48 36.1 -
1997 3.8 47 54.8 61 39 34.0 -
1998 2.2 90 49.1 0 36 32.3 -
1999 1.7 3 57.2 34 25 27.7 -
2000 1.8 0 48.6 34 7 23.9 -
2001 2.1 0 44.2 174 21 31.6 -
2002 3.4 0 41.5 4 30 32.3 -
2003 3.2 72 60.2 30 46 32.7 -
2004 2.6 0 52.2 0 15 30.2 -
2005 2.3 0 57.1 0 9 28.2 -
2006 1.1 0 50.7 0 14 28.0 14.8
2007 1.8 1 41.3 0 9 28.6 14.2
2008 1.6 0 42.8 9 11 27.7 13.6
2009 1.6 2 50.5 3 2 26.3 12.6
▲ In order to maintain the long term comparisons of PM10 data, a 1.3 correction factor has been applied to data
collected by TEOM analysers across the Highways Agency network in 2009 in this summary table.
6.2: Comparison with UK Air Quality Strategy objectives, Bell Common Tunnel
site
Pollutant CO NO2 O3 PM10 (Osiris) PM2.5
UK Air
Quality
Objective
(Conc. Threshold)
Max daily
running
8-hr
mean (10 mg/m3
Maximum of 18
exceedances of
1-hr mean (200
µg/m3)
Annual
mean
(40
µg/m3)
Maximum of 10
exceedances of
running 8-hr
mean (100 µg/m3)
Maximum of
35
exceedances
of 24-hr mean (50 μg/m3)
Annual
mean
(40
μg/m3)
Annual
mean
(25
μg/m3)
2007 2.4 736 139.9 0 714 44.8 17.0
2008 2.1 1976 158.6 0 50 45.0 16.4
2009 5.9 4022 241.4 0 - - -
Client Project Report
TRL 133 CPR1094 (II)
6.3: Comparison with UK Air Quality Strategy objectives, M25 site
Pollutant CO NO2 O3 PM10 (TEOM*1.3) ▲
SO2 PM2.5
UK Air Quality
Objective (Conc.
Threshold)
Max daily
running 8-hr
mean (10
mg/m3
Maximum of 18
exceedances of
1-hr mean (200
µg/m3)
Annual
mean (40
µg/m3)
Maximum of 10
exceedances of
running 8-hr mean
(100 µg/m3)
Maximum of 35
exceedances of 24-
hr mean (50
μg/m3)
Annual
mean (40
μg/m3)
Max. 24-hr
mean (125
μg/m3)
Max. 15-min
mean (266
μg/m3)
Annual
mean (25
μg/m3)
1995
(May – Dec) 4.6 7 50.2 0 3 44.2 - - -
1996 3.8 5 57.1 38 90 40.5 - - -
1997 6.8 2 49.5 2 54 35.1 58.1 150.0 -
1998 5.1 0 38.6 12 22 28.1 44.2 102.9 -
1999 3.1 0 43.9 83 25 25.0 41.7 136.6 -
2000 2.3 0 40.9 0 17 27.6 38.6 69.2 -
2001 3.1 0 38.8 18 26 27.3 35.1 79.5 -
2002 2.6 0 39.1 0 27 25.0 27.4 67.8 -
2003 3.4 0 54.6 15 26 27.6 48.4 104.3 -
2004 1.8 21 56.1 0 19 28.0 40.0 58.5 -
2005 1.9 0 42.7 0 8 23.6 45.0 52.0 -
2006 1.2 9 59.3 0 29 29.4 27.7 64.5 14.7
2007 2.0 32 57.3 0 21 28.3 28.2 48.0 15.3
2008 1.3 12 52.4 7 18 26.3 30.1 96.7 14.9
2009 1.1 7 57.0 0 7 26.1 17.9 13.9
▲ In order to maintain the long term comparisons of PM10 data, a 1.3 correction factor has been applied to data collected by TEOM analysers across the Highways Agency
network in 2009 in this summary table.
Client Project Report
TRL 134 CPR1094 (II)
6.4: Comparison with UK Air Quality Strategy objectives, M60 site
Pollutant CO NO2 O3 PM10 (TEOM x1.3) ▲ SO2 PM2.5
UK Air
Quality
Objective
(conc. Threshold)
Max daily
running 8-hr
mean (10
mg/m3
Maximum of 18
exceedances of
1-hr mean (200
µg/m3)
Annual mean
(40 µg/m3)
Maximum of 10
exceedances of
running 8-hr mean
(100 µg/m3)
Maximum of 35
exceedances of 24-
hr mean (50 μg/m3)
Annual mean
(40 μg/m3)
Max. 24-hr
mean (125
μg/m3)
Max. 15-
min mean
(266
μg/m3)
Annual mean
(25 μg/m3)
1999
(May – Dec) 2.2 0 41.6 65 1 22.6 - - -
2000 5.0 0 44.1 29 5 21.4 - - -
UK Air
Quality
Objective
(conc.
Threshold)
Max daily
running 8-hr
mean (10
mg/m3
Maximum of 18
exceedances of
1-hr mean (200
µg/m3)
Annual
mean (40
µg/m3)
Maximum of 10
exceedances of
running 8-hr mean
(100 µg/m3)
Maximum of 35
exceedances of 24-
hr mean (50 μg/m3)
Annual mean
(40 μg/m3)
Max. 24-hr
mean (125
μg/m3)
Max. 15-
min mean
(266
μg/m3)
Annual mean
(25 μg/m3)
2001 3.0 0 37.7 17 9 23.9 - - -
2002 2.6 0 42.5 16 10 24.6 - - -
2003 3.9 0 53.6 159 55 35.0 22.5 50.6 -
2004 2.4 1 48.9 31 10 25.9 27.1 89.4 -
2005 3.4 2 46.1 20 10 27.6 22.2 51.8 -
2006 2.2 0 45.3 87 21 27.7 27.7 96.1 13.0
2007 1.9 30 51.5 0 13 27.0 23.0 47.2 13.5
2008 2.0 0 44.6 17 7 22.9 16.8 44.7 10.7
2009 1.3 0 44.8 316 0 19.8 40.8 13.1
▲ In order to maintain the long term comparisons of PM10 data, a 1.3 correction factor has been applied to data collected by TEOM analysers across the Highways Agency
network in 2009 in this summary table.
Client Project Report
TRL 135 CPR1094 (II)
7 Historical hourly data summary statistics
7.1: M4 summary statistics of hourly data, 1992 to 2009
Pollutant Min. Med. Avg. Max. Std. dev.
Data capture (% of
calendar
year)
19
92
(A
ug
to
Dec)
CO (mg/m3) 0.0 0.8 1.0 6.8 0.8 36
NO (μg/m3) 1.0 229.0 274.0 1175.0 237.0 28
NO2 (μg/m3) 0.7 17.3 17.9 85.9 9.5 28
NOX (μg/m3) 2.0 247.4 291.6 1195.5 240.0 28
O3 (μg/m3) 0.0 2.7 5.8 54.4 7.1 23
CH4 (mg/m3) 1.7 2.0 2.2 6.6 0.6 23
NMHC (mg/m3) 0.0 0.2 0.3 2.7 0.3 36
19
93
CO (mg/m3) 0.0 0.6 0.8 5.6 0.7 85
NO (μg/m3) 0.0 187.0 216.0 1067.0 180.0 92
NO2 (μg/m3) 0.1 17.8 18.8 77.3 10.1 89
NOX (μg/m3) 2.7 199.4 226.6 1098.2 178.2 86
O3 (μg/m3) 0.0 5.0 8.7 52.9 9.6 92
CH4 (mg/m3) 1.7 2.0 2.2 7.9 0.6 34
NMHC (mg/m3) 0.0 0.2 0.3 2.9 0.2 58
Total traffic (veh/hr) 155 4556 3950 10445 17
Annual average daily traffic
(veh/day) 94782 17
19
94
(Jan
to
Ju
ne)
CO (mg/m3) 0.0 0.6 0.8 4.3 0.6 99
NO (μg/m3) 1.25 183.75 217.23 1138.75 183.99 99
NO2 (μg/m3) 1.34 31.13 32.62 117.08 16.58 99
NOX (μg/m3) 4.78 318.40 364.55 1761.02 285.63 99
O3 (μg/m3) 0.2 17.2 21.6 121.6 18.7 76
CH4 (mg/m3) 1.15 1.30 1.36 4.05 0.22 74
NMHC (mg/m3) 0.00 0.10 0.12 1.14 0.10 86
19
95
(A
pr t
o D
ec)
CO (mg/m3) 0.0 0.5 0.6 3.0 0.4 62
NO (μg/m3) 1.25 150.00 195.74 905.00 165.80 57
NO2 (μg/m3) 0.00 29.22 32.02 233.40 23.11 52
NOX (μg/m3) 1.91 252.41 324.56 1401.94 259.37 52
O3 (μg/m3) 0.2 9.0 18.4 121.6 21.2 62
CH4 (mg/m3) 1.13 1.38 1.50 3.81 0.37 33
NMHC (mg/m3) 0.01 0.10 0.13 0.87 0.10 33
Total traffic (veh/hr) 89 3773 3763 9573 15
Annual average daily traffic
(veh/day) 94704 15
Client Project Report
TRL 136 CPR1094 (II)
Pollutant Min. Med. Avg. Max. Std. dev.
Data capture (% of
calendar
year)
19
96
CO (mg/m3) 0.0 0.6 0.7 5.6 0.6 98
NO (μg/m3) 0.00 102.50 147.24 1022.50 147.28 87
NO2 (μg/m3) 0.57 44.50 48.28 266.06 26.89 87
NOX (μg/m3) 3.82 209.72 272.41 1583.96 231.39 87
O3 (μg/m3) 0.2 10.0 18.3 100.4 19.3 91
PM10 (μg/m3)
(TEOM, unadjusted) 0.3 24.1 27.8 172.5 17.1 83
PM10 (μg/m3)
(TEOM, data x 1.3) 0.4 31.3 36.1 224.3 22.2 83
CH4 (mg/m3) 1.01 1.39 1.54 5.73 0.50 89
NMHC (mg/m3) 0.00 0.10 0.13 1.55 0.11 86
Total traffic (veh/hr) 73 4516 4101 10761 77
Annual average daily traffic
(veh/day) 98417 69
19
97
CO (mg/m3) 0.0 0.5 0.7 6.1 0.6 94
NO (μg/m3) 0.00 87.50 119.70 882.50 117.57 94
NO2 (μg/m3) 0.00 47.75 54.78 297.96 35.85 92
NOX (μg/m3) 7.64 198.64 236.94 1298.8 187.34 92
O3 (μg/m3) 0.2 11.0 21.97 177.0 25.2 95
PM10 (μg/m3)
(TEOM, unadjusted) 1.0 23.0 26.1 152.0 15.5 93
PM10 (μg/m3) (TEOM, data x 1.3)
1.3 29.9 34.0 197.6 20.2 94
CH4 (mg/m3) 1.00 1.40 1.60 6.20 0.70 66
NMHC (mg/m3) 0.00 0.10 0.10 1.00 0.10 66
Total traffic (veh/hr) 84 4834 4326 10967 70
Annual average daily traffic
(veh/day) 103718 69
19
98
CO (mg/m3) 0.0 0.4 0.5 2.9 0.4 95
NO (μg/m3) 0.00 62.50 96.34 815.00 99.53 86
NO2 (μg/m3) 0.00 38.77 49.15 281.73 40.24 87
NOX (μg/m3) 0.96 154.43 197.27 1292.12 164.53 85
O3 (μg/m3) 0.0 7.0 12.7 96.6 13.4 85
PM10 (μg/m3)
(TEOM, unadjusted) 0.5 21.5 24.8 186.6 15.3 93
PM10 (μg/m3)
(TEOM, data x 1.3) 0.7 28.0 32.3 242.6 19.9 93
CH4 (mg/m3) 1.06 1.37 1.50 5.87 0.51 71
NMHC (mg/m3) 0.00 0.05 0.07 0.79 0.07 69
Total traffic (veh/hr) 4464 31
Annual average daily traffic (veh/day)
107019 31
Client Project Report
TRL 137 CPR1094 (II)
Pollutant Min. Med. Avg. Max. Std. dev.
Data capture
(% of calendar
year)
19
99
CO (mg/m3) 0.0 0.5 0.6 2.4 0.4 73
NO (μg/m3) 0.00 57.50 85.80 743.75 88.83 73
NO2 (μg/m3) 0.00 55.96 57.15 234.55 29.82 74
NOX (μg/m3) 2.67 148.98 188.67 1253.53 151.75 73
O3 (μg/m3) 0.0 8.6 19.6 144.4 24.3 74
PM10 (μg/m3)
(TEOM, unadjusted) 0.0 16.5 21.3 222.9 19.3 63
PM10 (μg/m3)
(TEOM, data x 1.3) 0.0 21.5 27.7 289.8 25.1 63
CH4 (mg/m3) 0.95 1.33 1.45 5.75 0.44 32
NMHC (mg/m3) 0.00 0.06 0.09 0.79 0.09 32
Total traffic (veh/hr) 128 4735 4403 10972 25
Annual average daily
traffic (veh/day) 105804 25
20
00
CO (mg/m3) 0.0 0.5 0.6 2.4 0.4 96
NO (μg/m3) 0.00 81.25 100.09 672.50 86.32 88
NO2 (μg/m3) 1.53 48.32 48.58 166.17 25.43 88
NOX (μg/m3) 3.44 178.20 201.51 1097.30 148.89 88
O3 (μg/m3) 0.6 10.6 23.2 132.2 25.9 61
PM10 (μg/m3)
(TEOM, unadjusted) 0.0 15.8 18.4 125.9 12.1 96
PM10 (μg/m3)
(TEOM, data x 1.3) 0.0 20.5 23.9 163.7 15.7 96
CH4 (mg/m3) 1.08 1.37 1.53 5.67 0.52 66
NMHC (mg/m3) 0.01 0.08 0.09 0.54 0.05 61
Total traffic (veh/hr) 192 5313.5 4670 11686 53
Annual average daily
traffic (veh/day) 112033 53
20
01
CO (mg/m3) 0.0 0.6 0.7 2.8 0.4 90
NO (μg/m3) 0.00 55.00 80.72 581.25 80.87 92
NO2 (μg/m3) 0.57 42.98 44.22 154.71 22.26 92
NOX (μg/m3) 3.44 133.70 167.56 959.78 134.15 92
O3 (μg/m3) 0.0 9.0 23.2 162.6 30.15 84
PM10 (μg/m3)
(TEOM, unadjusted) 0.0 20.6 24.3 163.4 15.4 82
PM10 (μg/m3) (TEOM, data x 1.3)
0.0 26.8 31.6 212.4 20.1 82
Total traffic (veh/hr) 95 5287 4739 15553 87
Annual average daily
traffic (veh/day) 113662 88
Client Project Report
TRL 138 CPR1094 (II)
Pollutant Min. Med. Avg. Max. Std. dev. Data capture
(% of calendar
year)
20
02
CO (mg/m3) 0.0 0.6 0.7 3.9 0.5 89
NO (μg/m3) 0.02 54.72 91.90 813.13 103.75 84
NO2 (μg/m3) 0.49 35.36 41.54 171.26 26.35 84
NOX (μg/m3) 2.70 121.92 181.96 1317.98 174.52 84
O3 (μg/m3) 0.1 15.6 21.4 138.5 19.5 89
PM10 (μg/m3)
(TEOM, unadjusted) 0.1 21.6 24.8 336.4 16.4 93
PM10 (μg/m3)
(TEOM, data x 1.3) 0.1 28.1 32.3 437.3 21.3 93
Total traffic (veh/hr) 4794 76
Annual average daily traffic (veh/day)
114974 76
20
03
CO (mg/m3) 0.0 0.5 0.6 3.9 0.5 99
NO (μg/m3) 0.00 44.00 90.52 1073.44 120.37 93
NO2 (μg/m3) 0.00 53.00 60.20 471.77 39.61 93
NOX (μg/m3) 2.87 135.82 198.41 1739.88 200.42 93
O3 (μg/m3) 0.2 14.4 21.8 290.2 22.0 53
PM10 (μg/m3)
(TEOM, unadjusted) 0.0 21.2 25.1 134.5 15.9 90
PM10 (μg/m3)
(TEOM, data x 1.3) 0.0 27.6 32.7 174.9 20.7 90
Total Traffic Flow (veh/hr)
0 5452 4768 11854 3273 92
Annual average daily
traffic (veh/day) 114425 92
20
04
CO (mg/m3) 0.0 0.7 0.8 3.9 0.5 85
NO (μg/m3) 0.00 54.38 72.57 480.75 70.70 87
NO2 (μg/m3) 0.00 50.04 52.21 152.61 25.47 87
NOX (μg/m3) 2.48 136.95 163.27 843.07 127.29 87
O3 (μg/m3) 0.4 13.8 19.3 95.2 16.7 99
PM10 (μg/m3)
(TEOM, unadjusted) 0.0 20.8 23.2 153.3 12.6 99
PM10 (μg/m3)
(TEOM, data x 1.3) 0.0 27.0 30.2 199.3 16.4 99
Total Traffic Flow
(veh/hr) 160 5324 4718 11216 3273 63
Annual average daily
traffic (veh/day) 113215 63
Client Project Report
TRL 139 CPR1094 (II)
Pollutant Min. Med. Avg. Max. Std. dev. Data capture (% of
calendar year)
20
05
CO (mg/m3) 0.0 0.1 0.2 3.3 0.3 96
NO (μg/m3) 0.00 62.49 81.02 543.90 73.55 92
NO2 (μg/m3) 1.49 54.51 57.05 195.66 28.44 92
NOX (μg/m3) 2.98 153.62 180.83 980.52 134.17 92
O3 (μg/m3) 0.6 11.7 15.8 70.0 12.8 97
PM10 (μg/m3)
(TEOM, unadjusted) 0.0 19.1 21.7 134.1 12.4 94
PM10 (μg/m3)
(TEOM, data x 1.3) 0.0 24.9 28.2 174.4 16.1 94
CH4 (mg/m3) 1.17 1.51 1.62 6.91 0.38 26
NMHC (mg/m3) 0.00 0.14 0.14 0.39 0.07 22
Total traffic (veh/hr) 0 5599 4915 11481 3329 79
Annual average daily traffic
(veh/day) 117962 79
20
06
CO (mg/m3) 0.0 0.2 0.2 1.5 0.2 95
NO (μg/m3) 0.67 53.39 71.42 721.91 69.13 95
NO2 (μg/m3) 0.39 47.16 50.67 165.91 28.43 95
NOX (μg/m3) 4.00 134.25 161.73 1329.09 131.54 95
O3 (μg/m3) 0.4 12.8 17.2 109.4 14.1 98
PM10 (μg/m3)
(TEOM, unadjusted) 0.0 19.0 21.5 140.6 12.1 92
PM10 (μg/m3)
(TEOM, data x 1.3) 0.0 24.7 28.0 182.8 15.8 92
PM2.5 (μg/m3)
(TEOM, unadjusted) 0.0 12.9 14.8 69.8 8.4 55
CH4 (mg/m3) 1.07 1.47 1.56 5.53 0.34 19
NMHC (mg/m3) 0.00 0.05 0.06 0.34 0.05 19
Total traffic (veh/hr) 159 5505 4859 11722 3341 84
Annual average daily traffic
(veh/day) 116573 84
Client Project Report
TRL 140 CPR1094 (II)
Pollutant Min. Med. Avg. Max. Std. dev. Data capture (% of calendar year)
20
07
CO (mg/m3) 0.0 0.2 0.2 2.2 0.2 91
NO (μg/m3) 0.14 40.13 63.54 764.99 73.15 89
NO2 (μg/m3) 0.57 35.33 41.32 207.77 27.21 89
NOX (μg/m3) 1.15 100.48 138.40 1368.08 131.22 89
O3 (μg/m3) 1.60 15.84 19.73 111.76 14.69 90
PM10 (μg/m3)
(TEOM, unadjusted) 0.9 19.7 22.0 176.5 11.5 89
PM10 (μg/m3)
(TEOM, data x 1.3) 1.2 25.6 28.6 229.5 15.0 89
PM10 (μg/m3)
(VCM adjusted) 0.11 21.16 24.86 203.84 15.11 89
PM2.5 (μg/m3)
(TEOM, unadjusted) 0.8 12.3 14.2 118.7 8.2 89
CH4 (mg/m3) 0.95 1.40 1.62 9.96 0.79 61
NMHC (mg/m3) 0.00 0.02 0.04 1.01 0.07 61
Total traffic (veh/hr) 196 5514 4843 11910 3327 100
Annual average daily traffic
(veh/day) 116225 100
20
08
CO (mg/m3) 0.01 0.29 0.31 1.62 0.19 99
NO (μg/m3) 0.07 58.33 83.02 864.58 86.62 99
NO2 (μg/m3) 1.00 40.02 42.83 126.54 23.17 99
NOX (μg/m3) 1.52 102.09 125.84 895.16 100.17 99
O3 (μg/m3) 4.01 26.60 29.23 108.32 15.14 99
PM10 (μg/m3)
(TEOM, unadjusted) 1.19 18.94 21.28 239.78 12.24 99
PM10 (μg/m3)
(TEOM, data x 1.3) 1.55 24.62 27.69 311.71 15.91 99
PM10 (μg/m3)
(VCM) 8.8 22.8 25.6 75.8 11.0 96
PM2.5 (μg/m3)
(TEOM) 0.99 12.13 13.56 71.50 7.07 99
CH4 (mg/m3) 0.7 1.4 1.5 11.8 0.7 88
Total traffic (veh/hr) 269 5702 4889 11598 3309 54
Annual average daily traffic
(veh/day) 117334 54
20
09
CO (mg/m3) 0.00 0.35 0.37 3.42 0.23 96
NO (μg/m3) 0.83 72.73 93.81 1132.41 83.60 99
NO2 (μg/m3) 1.14 45.75 50.51 226.86 27.40 99
NOX (μg/m3) 3.92 122.33 144.32 1359.26 104.44 99
O3 (μg/m3) 0.14 15.08 21.51 107.94 18.92 100
PM10 (μg/m3)
(TEOM, unadjusted) 0.42 18.08 20.20 181.33 11.14 99
PM10 (μg/m3)
(TEOM, data x 1.3) 0.55 23.50 26.26 235.72 14.48 99
PM10 (μg/m3)
(VCM) 0.35 20.87 24.03 198.93 13.61 99
PM2.5 (μg/m3)
(TEOM) 0.27 11.03 12.58 141.92 7.42 98
CH4 (mg/m3) 0.68 1.32 1.46 15.32 0.77 25
Total traffic (veh/hr) 18 2442 2261 6437 1634 71
Annual average daily traffic
(veh/day) 108516
Client Project Report
TRL 141 CPR1094 (II)
7.2: Bell Common summary statistics of hourly data, 2007 to 2009 Pollutant Min. Med. Avg. Max. Std. dev.
Data capture (%
of calendar year)
20
07
CO (mg/m3) 0.1 0.7 0.8 5.0 0.4 93
NO (μg/m3) 4.39 499.95 542.15 3189.35 296.09 100
NO2 (μg/m3) 15.26 135.28 139.85 544.46 46.69 100
NOX (μg/m3) 22.96 894.76 968.24 4937.35 486.37 100
O3 (μg/m3) 0.1 1.3 1.5 14.9 1.3 92
PM10 (μg/m3) (Osiris)
2.2 39.1 44.8 376.2 27.2 32
PM2.5 (μg/m3)
(Osiris) 1.0 14.5 17.0 136.9 10.7 32
PM1 (μg/m3) (Osiris) 0.2 4.0 5.2 49.5 4.3 32
Total traffic (veh/hr) 6 5729 5063 11308 2970 98
Annual average daily
traffic (veh/day) 121507 98
20
08
CO (mg/m3) 0.04 0.77 0.78 2.08 0.29 79
NO (μg/m3) 13.93 764.08 814.33 6723.54 413.45 98
NO2 (μg/m3) 32.81 150.47 158.57 750.35 57.92 98
NOX (μg/m3) 59.87 908.19 972.88 7123.97 456.04 98
O3 (μg/m3) 0.29 1.23 1.36 8.06 0.65 100
PM10 (μg/m3) (Osiris)
8.10 38.10 44.99 589.90 30.56 52
PM2.5 (μg/m3) (Osiris)
3.05 14.31 16.38 178.50 11.44 52
PM1 (μg/m3) (Osiris) 0.98 3.88 4.80 58.76 4.33 52
TSP (μg/m3) (Osiris) 10.13 52.20 61.04 720.08 43.31 52
Total traffic (veh/hr) 192 5874 5289 11824 3066 n/a
Annual average daily
traffic (veh/day) 126929 n/a
20
09
CO (mg/m3) 0.00 1.10 1.29
(annualised) 7.37 0.75 48
NO (μg/m3) 5.04 1160.07 1481.52
(annualised) 8141.29 791.30 71
NO2 (μg/m3) 3.07 230.63 254.58
(annualised) 1070.85 101.55 71
NOX (μg/m3) 34.06 1389.07 1645.10
(annualised) 8652.06 862.70 71
O3 (μg/m3) 0.00 2.56 2.43
(annualised) 10.98 0.88 74
PM10 (μg/m3)
(Osiris) - - - - - -
PM2.5 (μg/m3)
(Osiris) - - - - - -
PM1 (μg/m3) (Osiris) - - - - - -
TSP (μg/m3) (Osiris) - - - - - -
Total traffic (veh/hr) - - - - - -
Annual average daily
traffic (veh/day) -
Client Project Report
TRL 142 CPR1094 (II)
7.3: M25 summary statistics of hourly data, 1995 to 2009
(Note: from 2004, the M25 site was relocated approx 100m to the north)
Pollutant Min. Med. Avg. Max. Std.
dev.
Data capture
(% of calendar year)
19
95
(M
ay t
o D
ec)
CO (mg/m3) 0.0 0.9 1.1 7.1 0.9 84
NO (μg/m3) 0.00 200.00 243.50 968.75 203.21 83
NO2 (μg/m3) 0.19 45.46 50.22 235.31 30.41 78
NOX (μg/m3) 5.35 341.70 411.20 1454.83 321.43 78
O3 (μg/m3) 0.4 13.2 18.4 104.4 15.4 82
PM10 (μg/m3)
(TEOM, unadjusted) 2.7 28.1 34.0 191.1 25.3 4
PM10 (μg/m3)
(TEOM, data x 1.3) 3.5 36.5 44.2 248.4 32.9 4
CH4 (mg/m3) 1.15 1.35 1.41 3.69 0.26 5
NMHC (mg/m3) 0.00 0.10 0.13 0.49 0.10 4
Total traffic (veh/hr) 285 9015 7511 15864 44
Annual average daily traffic
(veh/day) 180368 44
19
96
CO (mg/m3) 0.0 0.9 1.0 5.5 0.8 95
NO (μg/m3) 0.00 160.00 215.12 1432.50 193.99 97
NO2 (μg/m3) 0.96 53.86 57.08 239.90 29.66 91
NOX (μg/m3) 2.87 308.66 387.15 2207.96 307.84 91
O3 (μg/m3) 0.0 13.0 22.9 172.4 23.8 94
PM10 (μg/m3)
(TEOM, unadjusted) 1.3 25.3 31.2 251.7 22.1 96
PM10 (μg/m3)
(TEOM, data x 1.3) 1.7 32.9 40.5 327.2 28.7 96
CH4 (mg/m3) 0.80 1.35 1.42 5.50 0.39 79
NMHC (mg/m3) 0.00 0.13 0.17 2.04 0.15 78
Total traffic (veh/hr) 170 9050 7530 15889 86
Annual average daily traffic
(veh/day) 180670 86
19
97
CO (mg/m3) 0.0 0.8 1.1 9.5 0.9 99
NO (μg/m3) 0.00 137.50 184.85 1152.50 173.32 94
NO2 (μg/m3) 0.00 48.32 49.46 213.92 28.69 94
NOX (μg/m3) 0.57 259.76 331.91 1974.94 285.16 94
O3 (μg/m3) 0.0 10.6 20.2 174.2 21.1 98
PM10 (μg/m3)
(TEOM, unadjusted) 0.9 23.3 27.0 164.4 16.6 92
PM10 (μg/m3)
(TEOM, data x 1.3) 1.2 30.3 35.1 213.7 21.6 92
CH4 (mg/m3) 0.99 1.39 1.51 5.54 0.43 83
NMHC (mg/m3) 0.01 0.13 0.17 1.93 0.16 83
H2S (μg/m3) 0.18 10.92 13.15 55.38 10.13 34
SO2 (μg/m3) 0.00 16.97 21.99 149.97 18.18 34
Total traffic (veh/hr) 412 9296 7647 15820 90
Annual average daily traffic (veh/day)
182625 89
Client Project Report
TRL 143 CPR1094 (II)
Pollutant Min. Med. Avg. Max. Std.
dev.
Data capture (%
of calendar
year)
19
98
CO (mg/m3) 0.0 0.4 0.6 6.9 0.6 84
NO (μg/m3) 0.00 63.75 120.56 922.50 135.92 84
NO2 (μg/m3) 1.91 36.86 38.61 159.10 23.12 84
NOX (μg/m3) 2.48 135.61 222.82 1503.17 224.88 84
O3 (μg/m3) 0.0 21.0 29.0 176.8 25.2 68
PM10 (μg/m3)
(TEOM, unadjusted) 0.0 18.2 21.6 127.0 13.8 83
PM10 (μg/m3) (TEOM, data x 1.3)
0.0 23.7 28.1 165.1 18.0 83
CH4 (mg/m3) 0.94 1.27 1.32 4.08 0.27 65
NMHC (mg/m3) 0.00 0.12 0.15 1.29 0.13 65
H2S (μg/m3) 0.00 2.67 4.46 33.91 4.35 68
SO2 (μg/m3) 0.00 8.80 12.48 102.92 11.13 68
Total traffic (veh/hr) 358 8475 7208 15262 15
Annual average daily traffic
(veh/day) 171838 15
19
99
CO (mg/m3) 0.0 0.5 0.7 4.1 0.6 82
NO (μg/m3) 0.00 101.25 150.08 958.75 152.23 82
NO2 (μg/m3) 0.96 42.02 46.49 194.44 29.12 82
NOX (μg/m3) 2.87 208.48 275.81 1470.32 245.92 82
O3 (μg/m3) 0.0 23.8 32.9 198.8 28.7 75
PM10 (μg/m3)
(TEOM, unadjusted) 0.1 19.4 22.2 116.5 13.2 82
PM10 (μg/m3)
(TEOM, data x 1.3) 0.1 25.2 28.9 151.5 17.2 82
PM2.5 (μg/m3)
(TEOM, unadjusted) 0.0 13.1 15.4 71.9 9.2 57
CH4 (mg/m3) 0.76 1.19 1.29 5.69 0.37 78
NMHC (mg/m3) 0.01 0.12 0.14 0.95 0.10 75
H2S (μg/m3) 0.00 4.17 5.56 37.01 4.62 82
SO2 (μg/m3) 0.00 9.82 13.41 136.64 11.99 82
Total traffic (veh/hr) 288 9675 7844 15943 85
Annual average daily traffic
(veh/day) 188225 84
20
00
CO (mg/m3) 0.0 0.4 0.5 4.2 0.4 97
NO (μg/m3) 1.25 101.25 134.45 950.00 120.37 100
NO2 (μg/m3) 0.57 38.77 40.94 154.33 24.68 100
NOX (μg/m3) 4.39 197.98 246.38 1596.76 201.54 100
O3 (μg/m3) 0.0 18.4 25.1 95.8 22.2 100
PM10 (μg/m3)
(TEOM, unadjusted) 0.4 18.4 21.2 135.0 12.4 94
PM10 (μg/m3)
(TEOM, data x 1.3) 0.5 23.9 27.6 175.5 16.1 94
PM2.5 (μg/m3)
(TEOM, unadjusted) 0.3 12.2 14.4 91.3 8.9 100
CH4 (mg/m3) 1.02 1.38 1.44 3.56 0.22 33
NMHC (mg/m3) 0.00 0.06 0.08 0.42 0.06 33
H2S (μg/m3) 0.00 3.69 4.76 28.40 3.54 50
SO2 (μg/m3) 0.00 8.78 10.93 69.16 7.90 100
Total traffic (veh/hr) 238 9323 7761 15910 88
Annual average daily traffic
(veh/day) 184466 86
Client Project Report
TRL 144 CPR1094 (II)
Pollutant Min. Med. Avg. Max. Std.
dev.
Data capture (%
of calendar
year)
20
01
CO (mg/m3) 0.0 0.6 0.7 4.0 0.5 96
NO (μg/m3) 0.00 65.00 102.08 636.25 104.66 98
NO2 (μg/m3) 0.57 36.29 39.72 152.42 25.78 98
NOX (μg/m3) 0.00 138.09 195.56 1078.77 179.62 98
O3 (μg/m3) 0.0 19.0 25.4 141.2 23.6 98
PM10 (μg/m3)
(TEOM, unadjusted) 0.1 17.1 21.0 193.3 14.4 91
PM10 (μg/m3)
(TEOM, data x 1.3) 0.1 22.2 27.3 251.3 18.8 91
PM2.5 (μg/m3)
(TEOM, unadjusted) 0.1 10.7 13.6 176.6 10.5 91
CH4 (mg/m3) 1.10 1.40 1.47 4.52 0.27 57
NMHC (mg/m3) 0.00 0.04 0.06 0.53 0.06 56
H2S (μg/m3) 0.00 3.83 4.65 21.73 3.31 75
SO2 (μg/m3) 0.00 8.25 10.55 79.53 8.71 75
Total traffic (veh/hr) 255 9570 7802 16204 95
Annual average daily traffic
(veh/day) 185733 94
20
02
CO (mg/m3) 0.0 0.70 0.8 3.0 0.4 92
NO (μg/m3) 0.00 69.07 102.60 632.39 101.95 96
NO2 (μg/m3) 1.00 35.10 39.07 150.91 24.05 96
NOX (μg/m3) 2.95 145.14 195.82 1003.40 173.15 96
O3 (μg/m3) 0.3 18.6 26.8 117.3 24.3 97
PM10 (μg/m3)
(TEOM, unadjusted) 0.1 19.4 23.0 143.1 14.1 83
PM10 (μg/m3)
(TEOM, data x 1.3) 0.1 25.3 30.0 186.0 18.3 83
PM2.5 (μg/m3)
(TEOM, unadjusted) 0.0 10.3 12.5 63.1 7.9 97
CH4 (mg/m3) 1.13 1.36 1.43 4.40 0.25 88
NMHC (mg/m3) 0.00 0.04 0.06 0.61 0.06 88
H2S (μg/m3) 0.00 3.64 4.34 18.34 2.77 95
SO2 (μg/m3) 0.00 9.81 11.32 67.75 7.17 96
Total traffic (veh/hr) 16 9756 7925 16229 96
Annual average daily traffic
(veh/day) 188543 96
20
03
CO (mg/m3) 0.0 0.7 0.8 4.3 0.5 94
NO (μg/m3) 0.00 75.00 100.96 672.50 95.30 94
NO2 (μg/m3) 0.96 51.57 54.56 195.78 32.29 94
NOX (μg/m3) 5.16 172.19 208.82 1186.11 170.64 94
O3 (μg/m3) 0.8 14.0 23.1 142.6 22.5 94
PM10 (μg/m3)
(TEOM, unadjusted) 0.8 18.0 21.2 126.8 13.4 89
PM10 (μg/m3) (TEOM, data x 1.3)
1.0 23.4 27.6 164.8 17.4 89
PM2.5 (μg/m3) (TEOM, unadjusted)
0.3 12.6 15.3 84.8 10.2 78
CH4 (mg/m3) 1.14 1.41 1.47 4.76 0.28 85
NMHC (mg/m3) 0.00 0.06 0.08 0.93 0.07 88
H2S (μg/m3) 0.14 5.11 5.46 20.45 2.84 94
SO2 (μg/m3) 0.27 10.64 13.03 104.27 9.58 94
Total traffic (veh/hr) 304 9687 7856 15942 4754 81
Annual average daily traffic
(veh/day)
188376
81
Client Project Report
TRL 145 CPR1094 (II)
Pollutant Min. Med. Avg. Max. Std.
dev.
Data capture (% of
calendar
year)
20
04
CO (mg/m3) 0.0 0.3 0.4 2.1 0.3 68
NO (μg/m3) 0.00 47.13 85.68 610.00 101.55 70
NO2 (μg/m3) 0.00 48.13 56.10 278.86 43.96 70
NOX (μg/m3) 1.34 122.24 187.13 1097.49 194.27 70
O3 (μg/m3) 0.0 19.6 23.4 94.8 19.9 66
PM10 (μg/m3) (TEOM, unadjusted)
0.1 17.0 21.6 178.7 15.7 55
PM10 (μg/m3)
(TEOM, data x 1.3) 0.1 22.1 28.1 232.2 20.4 55
PM2.5 (μg/m3) (TEOM, unadjusted)
0.2 13.4 16.8 170.0 11.9 66
CH4 (mg/m3) 0.90 1.30 1.35 3.97 0.27 44
NMHC (mg/m3) 0..00 0.09 0.12 1.06 0.10 39
H2S (μg/m3) 0.14 4.83 5.41 23.57 3.16 55
SO2 (μg/m3) 0.27 10.64 12.14 58.52 7.59 56
Total traffic (veh/hr) 391 9758 7828 15208 4651 98
Annual average daily traffic (veh/day)
187872 98
20
05
CO (mg/m3) 0.0 0.2 0.3 1.9 0.2 98
NO (μg/m3) 0.00 48.96 74.10 516.96 73.53 93
NO2 (μg/m3) 1.45 37.80 42.70 162.10 26.13 93
NOX (μg/m3) 3.30 114.38 155.94 936.72 132.05 93
O3 (μg/m3) 0.3 14.9 20.2 80.2 18.3 50
PM10 (μg/m3) (TEOM, unadjusted)
1.2 15.4 18.2 129.7 11.2 92
PM10 (μg/m3)
(TEOM, data x 1.3) 1.5 20.0 23.6 168.6 14.5 92
PM2.5 (μg/m3)
(TEOM, unadjusted) 0.7 9.9 12.0 73.8 7.7 90
CH4 (mg/m3) 1.14 1.35 1.40 3.61 0.20 87
NMHC (mg/m3) 0.00 0.06 0.08 0.60 0.07 87
H2S (μg/m3) 0.21 9.95 10.71 34.39 5.12 99
SO2 (μg/m3) 0.50 15.20 15.91 52.00 7.05 93
NH3 (μg/m3) 0.12 6.19 6.77 28.75 3.76 75
Total traffic (veh/hr) 317 9854 7967 15816 4771 72
Annual average daily traffic
(veh/day) 191219 72
Client Project Report
TRL 146 CPR1094 (II)
Pollutant Min. Med. Avg. Max. Std.
dev.
Data capture
(% of
calendar
year)
20
06
CO (mg/m3) 0.0 0.2 0.3 1.6 0.2 100
NO (μg/m3) 0.69 47.13 72.03 614.58 76.73 100
NO2 (μg/m3) 0.70 55.70 59.33 269.43 39.41 100
NOX (μg/m3) 3.16 131.96 169.39 1062.64 150.86 100
O3 (μg/m3) 0.1 21.5 27.1 112.9 23.2 100
PM10 (μg/m3)
(TEOM, unadjusted) 2.0 20.2 22.6 259.5 13.3 99
PM10 (μg/m3)
(TEOM, data x 1.3) 2.6 26.2 29.4 337.4 17.3 99
PM2.5 (μg/m3)
(TEOM, unadjusted) 1.1 12.9 14.7 107.7 8.2 93
CH4 (mg/m3) 1.24 1.46 1.50 3.11 0.18 66
NMHC (mg/m3) 0.00 0.04 0.05 0.63 0.03 66
H2S (μg/m3) 0.00 3.00 3.71 20.86 3.05 100
SO2 (μg/m3) 0.00 6.40 7.40 64.50 5.97 99
NH3 (μg/m3) 0.05 10.48 10.80 48.68 6.41 61
Total traffic (veh/hr) 303 9620 8007 16716 4830 88
Annual average daily
traffic (veh/day) 192030 88
20
07
CO (mg/m3) 0.0 0.2 0.3 2.8 0.3 100
NO (μg/m3) 0.25 50.22 79.89 878.38 91.19 100
NO2 (μg/m3) 1.36 51.70 57.32 319.26 40.63 99
NOX (μg/m3) 2.81 130.68 179.69 1622.09 175.71 99
O3 (μg/m3) 0.1 18.2 23.2 90.9 19.7 99
PM10 (μg/m3)
(TEOM, unadjusted) 1.1 19.2 21.7 136.2 12.9 98
PM10 (μg/m3)
(TEOM, data x 1.3) 1.4 24.9 28.3 177.1 16.7 98
PM10 (μg/m3)
(VCM adjusted) 0.14 20.79 24.89 155.82 17.23 98
PM2.5 (μg/m3)
(TEOM, unadjusted) 0.9 13.2 15.3 71.8 9.1 99
CH4 (mg/m3) 1.20 1.43 1.52 3.72 0.29 53
NMHC (mg/m3) 0.00 0.05 0.07 1.05 0.09 53
H2S (μg/m3) 0.00 2.02 3.03 36.98 3.33 99
SO2 (μg/m3) 0.10 3.40 5.19 48.00 5.35 99
Total traffic (veh/hr) 369 9900 8290 17230 5017 91
Annual average daily
traffic (veh/day) 198958 91
Client Project Report
TRL 147 CPR1094 (II)
Pollutant Min. Med. Avg. Max. Std.
dev.
Data capture
(% of
calendar
year)
20
08
CO (mg/m3) 0.01 0.17 0.22 1.34 0.18 98
NO (μg/m3) 0.01 54.77 102.63 938.73 120.62 96
NO2 (μg/m3) 0.40 41.33 52.36 228.08 42.24 96
NOX (μg/m3) 1.76 97.34 155.05 1156.92 158.68 96
O3 (μg/m3) 0.63 24.90 29.56 112.67 22.17 98
PM10 (μg/m3) (TEOM, unadjusted)
1.26 17.14 20.20 159.65 12.12 97
PM10 (μg/m3) (TEOM, data x 1.3)
1.63 22.28 26.30 207.55 15.76 97
PM10 (μg/m3)
(VCM) 5.3 18.6 23.2 80.4 13.8 95
PM2.5 (μg/m3)
(TEOM) 0.46 12.42 14.92 130.12 8.95 96
PM10 (μg/m3) (Partisol) 5.21 19.94 24.48 82.88 14.80 75
CH4 (mg/m3) 0.3 1.2 1.2 5.3 0.3 91
H2S (μg/m3) 0.0 2.4 3.2 18.0 2.5 97
SO2 (μg/m3) 0.06 3.00 4.50 85.20 4.65 98
Total traffic (veh/hr) 525 100053 8355 17942 5064 54
Annual average daily
traffic (veh/day) 200525 54
20
09
CO (mg/m3) 0.00 0.27 0.30 1.57 0.16 98
NO (μg/m3) 0.61 61.85 100.81 839.14 108.70 98
NO2 (μg/m3) 1.26 50.17 57.03 231.90 42.16 98
NOX (μg/m3) 3.70 112.78 157.84 1026.94 147.38 98
O3 (μg/m3) 0.27 24.42 28.70 104.38 22.23 98
PM10 (μg/m3)
(TEOM, unadjusted) 0.69 17.67 20.10 230.94 12.05 98
PM10 (μg/m3) (TEOM, data x 1.3)
0.90 22.97 26.13 300.22 15.67 98
PM10 (μg/m3) (VCM)
0.09 20.51 23.90 253.91 15.12 98
PM2.5 (μg/m3)
(TEOM) 0.02 12.21 13.88 67.18 7.28 96
CH4 (mg/m3) 0.02 0.89 0.95 4.09 0.31 95
H2S (μg/m3) 0.00 2.14 2.70 15.60 2.08 98
SO2 (μg/m3) 0.04 2.85 3.95 33.11 3.39 98
Total traffic (veh/hr) 1 4928 4184 9655 2586 86
Annual average daily
traffic (veh/day) 200783
Client Project Report
TRL 148 CPR1094 (II)
7.4: M60 summary statistics of hourly data, 1999 to 2009
Pollutant Min. Med. Avg. Max. Std. dev.
Data capture
(% of
calendar year)
19
99
(M
ay t
o D
ec)
CO (mg/m3) 0.0 0.3 0.4 4.2 0.4 57
NO (μg/m3) 0.00 38.75 67.29 802.50 78.20 57
NO2 (μg/m3) 0.38 41.26 41.58 148.79 19.46 57
NOX (μg/m3) 2.67 105.05 144.00 1332.99 129.44 57
O3 (μg/m3) 1.6 20.0 26.7 194.8 25.1 53
PM10 (μg/m3)
(TEOM, unadjusted) 0.9 15.3 17.4 80.4 9.6 35
PM10 (μg/m3)
(TEOM, data x 1.3) 1.2 19.9 22.6 104.5 12.4 35
20
00
CO (mg/m3) 0.0 0.4 0.6 6.0 0.5 56
NO (μg/m3) 0.00 36.25 58.57 555.00 64.64 85
NO2 (μg/m3) 0.96 42.78 44.05 137.71 19.58 85
NOX (μg/m3) 1.72 100.47 133.68 985.37 111.85 85
O3 (μg/m3) 0.0 21.6 26.7 150.8 21.8 94
PM10 (μg/m3)
(TEOM, unadjusted) 0.2 14.2 16.5 137.7 10.3 72
PM10 (μg/m3)
(TEOM, data x 1.3) 0.3 18.5 21.4 179.0 13.4 72
Total traffic (veh/hr) 151 5924 5693 13450 59
Annual average daily traffic (veh/day)
135428 57
20
01
CO (mg/m3) 0.0 0.5 0.5 3.8 0.3 83
NO (μg/m3) 0.00 37.50 67.91 1032.50 89.41 91
NO2 (μg/m3) 0.57 36.48 37.68 126.06 18.42 91
NOX (μg/m3) 0.96 95.12 141.45 1693.41 148.50 91
O3 (μg/m3) 0.0 18.2 23.2 147.0 20.5 95
PM10 (μg/m3)
(TEOM, unadjusted) 1.6 16.1 18.4 131.6 11.0 68
PM10 (μg/m3) (TEOM, data x 1.3)
2.1 20.9 23.9 171.1 14.3 68
Total traffic (veh/hr) 138 5696 5504 13611 78
Annual average daily
traffic (veh/day) 131184 75
20
02
CO (mg/m3) 0.00 0.30 0.39 3.40 0.29 90
NO (μg/m3) 0.00 30.81 56.77 895.36 70.09 98
NO2 (μg/m3) 0.17 41.69 42.51 163.79 21.25 98
NOX (μg/m3) 4.20 90.61 129.25 1519.80 121.86 98
O3 (μg/m3) 0.1 21.7 26.0 134.4 21.4 95
PM10 (μg/m3) (TEOM, unadjusted)
0.3 17.1 19.0 139.8 10.1 99
PM10 (μg/m3)
(TEOM, data x 1.3) 0.3 22.2 24.6 181.8 13.2 99
Total traffic (veh/hr) 143 6041 5676 13952 69
Annual average daily traffic (veh/day)
134377 69
Client Project Report
TRL 149 CPR1094 (II)
Pollutant Min. Med. Avg. Max. Std. dev. Data capture
(% of calendar
year)
20
03
CO (mg/m3) 0.0 0.3 0.4 4.7 0.4 96
NO (μg/m3) 0.00 31.05 62.08 833.62 83.16 98
NO2 (μg/m3) 2.97 52.17 53.57 176.42 25.55 98
NOX (μg/m3) 7.17 100.86 148.43 1416.79 145.49 98
O3 (μg/m3) 0.2 27.2 33.6 207.8 29.1 91
CH4 (mg/m3) 1.14 1.30 1.41 2.98 0.31 8
NMHC (mg/m3) 0.00 0.07 0.10 0.69 0.10 8
H2S (μg/m3) 0.25 4.03 5.94 34.78 5.55 15
SO2 (μg/m3) 0.00 6.58 9.02 50.57 7.26 15
PM10 (μg/m3)
(TEOM, unadjusted) 0.0 23.1 27 141.8 17.5 80
PM10 (μg/m3)
(TEOM, data x 1.3) 0.0 30.0 35.0 184.3 22.8 80
Total traffic (veh/hr) 342 5946 5626 14174 1987.7 39
Annual average daily
traffic (veh/day) 134559 39
20
04
CO (mg/m3) 0.0 0.3 0.4 3.6 0.3 97
NO (μg/m3) 0.00 30.07 50.46 683.25 57.73 87
NO2 (μg/m3) 0.57 46.99 48.94 201.70 24.41 87
NOX (μg/m3) 0.76 95.12 126.04 1245.70 107.79 87
O3 (μg/m3) 0.0 24.4 28.6 158.8 23.1 91
CH4 (mg/m3) 1.10 1.50 2.53 7.40 1.52 71
NMHC (mg/m3) 0.00 0.06 0.08 0.64 0.07 57
H2S (μg/m3) 0.00 6.39 7.20 34.51 4.26 85
SO2 (μg/m3) 0.27 10.64 11.22 89.38 6.17 78
PM10 (μg/m3)
(TEOM, unadjusted) 0.1 17.9 19.9 87.8 10.6 93
PM10 (μg/m3)
(TEOM, data x 1.3) 0.1 23.3 25.9 114.1 13.7 93
Total traffic
(veh/hr) 397 6538 6064 14062 4159 43
Annual average
daily traffic
(veh/day)
145290 43
Client Project Report
TRL 150 CPR1094 (II)
Pollutant Min. Med. Avg. Max. Std. dev. Data capture (%
of calendar
year)
20
05
CO (mg/m3) 0.0 0.2 0.3 4.8 0.3 98
NO (μg/m3) 0.50 27.20 51.11 768.41 65.15 97
NO2 (μg/m3) 0.59 42.90 46.10 229.87 24.32 97
NOX (μg/m3) 2.62 84.94 124.20 1373.63 119.73 97
O3 (μg/m3) 0.0 22.2 27.4 125.0 22.8 85
CH4 (mg/m3) 1.14 1.37 1.41 3.39 0.18 86
NMHC (mg/m3) 0.01 0.07 0.07 0.37 0.03 75
H2S (μg/m3) 0.00 5.68 6.34 41.73 4.21 74
SO2 (μg/m3) 0.00 7.85 8.34 51.84 5.76 78
PM10 (μg/m3)
(TEOM, unadjusted) 0.1 19.3 21.2 126.8 11.0 98
PM10 (μg/m3)
(TEOM, data x 1.3) 0.1 25.0 27.6 164.9 14.2 98
PM10 (μg/m3)
(Partisol) 1.9 23.3 29.5 386.4 41.2 47
PM2.5 (μg/m3) Partisol 0.0 14.2 20.4 374.4 40.1 47
Total traffic (veh/hr)
145 4305 5171 14413 4066 98
Annual average
daily traffic
(veh/day)
- - 122467 - - 98
20
06
CO (mg/m3) 0.0 0.3 0.4 3.3 0.3 98
NO (μg/m3) 0.00 21.88 41.64 530.42 51.08 87
NO2 (μg/m3) 0.00 40.93 45.26 184.63 25.94 87
NOX (μg/m3) 0.00 87.67 108.85 963.47 94.76 87
O3 (μg/m3) 0.0 22.8 27.0 162.0 23.0 98
CH4 (mg/m3) 1.02 1.38 1.45 6.27 0.26 85
NMHC (mg/m3) 0.00 0.06 0.06 0.84 0.04 85
H2S (μg/m3) 0.00 3.37 4.24 29.43 3.23 76
SO2 (μg/m3) 0.00 6.84 7.90 96.12 5.47 82
PM10 (μg/m3) (TEOM, unadjusted)
0.3 18.5 21.3 129.3 12.3 97
PM10 (μg/m3)
(TEOM, data x 1.3) 0.3 24.1 24.7 168.1 16.0 97
PM2.5 (μg/m3)
(TEOM, unadjusted) 0.1 9.9 11.9 122.8 8.4 93
PM10 (μg/m3)
(Partisol) 5.6 18.4 21.2 142.4 12.0 94
PM2.5 (μg/m3)
(Partisol) 0.0 10.5 13.0 67.2 8.5 94
Total traffic
(veh/hr) 152 6786 6363 14841 4339 90
Annual average
daily traffic
(veh/day)
144658 90
Client Project Report
TRL 151 CPR1094 (II)
Pollutant Min. Med. Avg. Max. Std. dev. Data capture (% of calendar year)
20
07
CO (mg/m3) 0.0 0.3 0.4 2.9 0.2 99
NO (μg/m3) 0.00 35.73 58.98 705.70 70.12 80
NO2 (μg/m3) 0.26 47.54 51.49 299.70 31.51 80
NOX (μg/m3) 1.06 104.34 141.64 1314.34 133.72 80
O3 (μg/m3) 0.0 17.4 21.5 117.6 18.3 99
CH4 (mg/m3) 1.11 1.38 1.45 3.54 0.22 81
NMHC (mg/m3) 0.00 0.05 0.06 0.52 0.05 81
H2S (μg/m3) 0.00 3.42 4.22 28.27 2.95 71
SO2 (μg/m3) 0.00 5.09 6.02 47.19 4.25 87
PM10 (μg/m3)
(TEOM, unadjusted) 0.0 18.3 20.7 229.8 12.6 93
PM10 (μg/m3)
(TEOM, data x 1.3) 0.0 23.7 26.9 298.8 16.4 93
PM10 (μg/m3)
(VCM adjusted) 0.03 18.66 22.55 243.66 16.48 76
PM2.5 (μg/m3)
(TEOM, unadjusted) 0.0 10.9 13.2 207.3 9.9 92
PM10 (μg/m3)
(Partisol) 3.0 19.0 22.6 116.3 14.2 65
PM2.5 (μg/m3)
(Partisol) 1.6 10.9 13.6 86.7 9.5 65
Total traffic (veh/hr) 136 6870 6489 15880 4431 84
Annual average daily traffic (veh/day)
155720 84
20
08
CO (mg/m3) 0.02 0.32 0.36 2.02 0.22 98
NO (μg/m3) 0.01 53.41 80.01 1232.20 94.65 97
NO2 (μg/m3) 0.01 41.98 44.56 187.50 25.05 97
NOX (μg/m3) 0.48 79.09 115.84 1380.08 123.35 97
O3 (μg/m3) 1.81 28.74 32.19 114.68 20.21 94
CH4 (mg/m3) 1.06 1.50 1.57 4.42 0.28 94
NMHC (mg/m3) 0.00 0.07 0.10 0.73 0.09 83
H2S (μg/m3) 0.00 4.95 5.71 35.92 3.85 95
SO2 (μg/m3) 0.00 3.51 4.09 34.62 3.51 96
PM10 (μg/m3)
(TEOM, unadjusted) 0.13 15.81 17.71 145.88 10.49 97
PM10 (μg/m3)
(TEOM, data x 1.3) 0.16 20.56 22.91 189.64 13.64 97
PM10 (μg/m3)
(VCM) 5.5 17.4 20.0 104.8 11.5 95
PM2.5 (μg/m3)
(TEOM) 0.06 9.44 10.72 130.75 6.91 98
PM10 (μg/m3)
(Partisol) 5.87 20.56 23.65 91.68 13.06 63
PM2.5 (μg/m3)
(Partisol) 1.44 10.60 13.52 70.56 9.64 63
Total traffic (veh/hr) 198 6796 6474 15302 4396 95
Annual average daily
traffic (veh/day) 152739 95
Client Project Report
TRL 153 CPR1094 (II)
Pollutant Min. Med. Avg. Max. Std. dev. Data capture (% of calendar year)
20
09
CO (mg/m3) 0.00 0.29 0.33 1.90 0.20 100
NO (μg/m3) 0.00 26.72 54.68 867.89 72.87 99
NO2 (μg/m3) 0.55 41.97 44.79 178.99 25.11 99
NOX (μg/m3) 0.57 69.86 99.48 1046.88 93.51 99
O3 (μg/m3) 0.61 29.13 36.76 172.99 30.97 100
CH4 (mg/m3) 0.01 1.50 1.55 4.30 0.29 98
NMHC (mg/m3) 0.01 0.08 0.09 0.87 0.06 98
H2S (μg/m3) 0.00 5.07 6.48 187.38 5.50 99
SO2 (μg/m3) 0.00 4.67 5.93 37.42 4.30 94
PM10 (μg/m3)
(TEOM, unadjusted) 0.00 13.63 15.24 161.75 8.51 99
PM10 (μg/m3)
(TEOM, data x 1.3) 0.00 17.71 19.81 210.28 11.06 99
PM10 (μg/m3)
(VCM) 0.12 15.96 18.48 154.87 11.17 99
PM2.5 (μg/m3)
(TEOM) 0.00 12.13 13.09 105.69 6.47 99
Total traffic (veh/hr) 94 3483 3319 8378 2277 71
Annual average daily
traffic (veh/day) 159226
Client Project Report
TRL 154 CPR1094 (II)
8 Historical traffic flow summary statistics
8.1: M4 traffic characteristics
Year M4
AAHT AADT %change in AADT Data capture (%)
1993 3950 94782 n/a 17
1994 n/a n/a n/a n/a
1995 3763 94704 n/a 15
1996 4101 98417 3.9 69
1997 4326 103718 5.4 69
1998 4464 107019 3.2 31
1999 4403 105804 -1.1 25
2000 4670 112033 5.9 53
2001 4739 113662 1.5 88
2002 4794 114974 1.2 76
2003 4768 114425 -0.5 92
2004 4718 113215 -1.1 63
2005 4915 117962 4.2 79
2006 4859 116573 -1.2 84
2007 4843 116565 -0.01 40
2008 4889 117334 0.7 54
2009 4522 108516 -7.5 71
Average 4545 109356 n/a n/a
8.2: Bell Common traffic characteristics
Year Bell Common
AAHT AADT %change in AADT Data capture (%)
2007 5063 121507 n/a 98
2008 5289 126929 4.5 n/a
2009 - - - -
Average 5176 124218 n/a n/a
8.3: M25 traffic characteristics
Year M25
AAHT AADT %change in AADT Data capture (%)
1995 7511 180368 n/a 44
1996 7530 180670 0.2 86
1997 7647 182625 1.1 89
1998 7208 171838 -5.9 15
1999 7844 188225 9.5 84
2000 7760 184466 -2 86
2001 7802 185733 0.7 94
2002 7920 188543 1.5 96
2003 7856 188377 -0.1 81
2004 7828 187872 -0.3 98
2005 7967 191219 1.8 72
2006 8007 192030 0.4 88
2007 8290 198958 3.5 91
2008 8355 200525 0.8 100
2009 8366 200783 0.1 86
Average 7859 188149 n/a n/a
Client Project Report
TRL 155 CPR1094 (II)
8.4: M60 traffic characteristics
Year M60
AAHT AADT %change in AADT Data capture (%)
2000 5693 135428 n/a 57
2001 5503 131184 -3.1 75
2002 5676 134377 2.4 69
2003 5626 134559 0.1 39
2004 6064 145290 8.0 43
2005 5171 122467 -15.7 98
2006 6363 144658 18.1 90
2007 6489 155720 7.5 84
2008 6474 152739 -1.8 95
2009 6636 159266 4.3 71
Average 5970 141569 n/a n/a