The Air Quality Limit Values (Wales) Regulations 2002

PART V BENZENE

	Averaging period	Limit value	Margin of tolerance	Date by which limit value is to be met
Limit value for the protection of human health	Calendar year	5μg/m3	5μg/m3 on 1st January 2003, reducing on 1st January 2006 and every 12 months thereafter by 1 μg/m3 to reach 0 μg/m3 by 1st January 2010	1st January 2010