Understanding Air Pollution from Induced Traffic during and after the Construction of a New Highway: Case Study of Highway 25 in Montreal
Table 1
Average hourly concentration of nitrogen dioxide (ppb) at four stations near construction site during off-peak hour traffic.
Months
Off-peak hour traffic
Station 1
Station 3
Station
Station 29
2003
2008
2013
2003
2008
2013
2008
2013
2003
2008
2013
January
22.6
17.47
16.9
18.5
14
14.6
15.6
17.9
19.4
20.3
February
24.6
19.10
22.10
20.2
15.2
14
16.8
18.4
21.6
17.8
18.7
March
26
18.37
21.37
22.6
14.9
13.6
17.9
18.4
24.7
19
20.4
April
17.3
13.29
16.29
14.6
11.9
11.4
15.3
16.7
19.6
16.1
16.6
May
16.1
12.57
15.57
13.3
10.9
14.3
10.8
12.3
21.6
12.3
15
June
17.5
10.46
13.46
15.4
10.3
11.3
10
12
16.6
10.9
12.6
July
14.5
10.86
13.86
13.6
9.86
11.3
9.78
10.9
13.4
8.74
10.3
August
14.2
11.53
14.53
11.6
9.23
11.5
9.61
10.9
13.5
10.6
11.3
September
15.7
11.27
14.27
12.2
9.81
10.7
9.89
10.1
15.1
11.1
12.1
October
17.2
14.40
17.40
13.6
10.9
11.7
13.1
14.2
16.3
12.5
14.1
November
19.2
15.31
18.31
12.6
10.5
11.5
12.5
13.1
16.5
14.3
16.1
December
17.75
20.75
18.1
12.2
13.7
13.6
17.1
20.4
14.8
17.8
Average
18.6
14.37
17.1
15.5
11.7
12.5
12.7
14.1
18.1
14
15.4
Missing data on average hourly concentration of nitrogen dioxide (ppb); Réseau de surveillance de la qualité de l’air of the City of Montreal has no record of nitrogen dioxide (ppb) data at station 7 for the year 2003.
