Paragraph 2.1 Limit values for nitrogen dioxide and oxides of nitrogen

Changes not yet applied. Later legislation changes this provision in ways not yet written into the text below:

Sch 1, Pt I, para 1.1 am (19.1.2003) by Air Quality Limit Values 2002 reg 2(1), (8)(a)
Sch 1, Pt II, para 2.1 am (19.1.2003) by Air Quality Limit Values 2002 reg 2(1), (8)(b)
Sch 1, Pt III am (19.1.2003) by Air Quality Limit Values 2002 reg 2(1), (8)(c)
Sch 1, Pt IV am (19.1.2003) by Air Quality Limit Values 2002 reg 2(1), (8)(d)
Sch 1, Pts V, VI added (19.1.2003) by Air Quality Limit Values 2002 reg 2(1), (8)(e)

	Averaging Period	Limit value	Margin of tolerance	Date by which limit value is to be met
1.Hourly limit value for the protection of human health	1 hour	200μg/m³ NO₂ not to be exceeded more than 18 times a calendar year	290μg/m³ on 19th July 2001, reducing on 1st January of each following year by 10μg/m³ to reach 200μg/m³ by 1st January 2010	1st January 2010
2.Annual limit value for the protection of human health	Calendar year	40μg/m³ NO₂	58μg/m³ on 19th July 2001 reducing on 1st January of each following year by 2μg/m³ to reach 40μg/m³ by 1st January 2010	1st January 2010
3.Annual limit value for the protection of vegetation	Calendar year	30μg/m³ NO_x	None	19th July 2001