The Air Quality Standards (Scotland) Regulations 2007

PART 2Alert and information thresholds for ozone

ParameterThreshold
(1)

For the purposes of regulation 11 (action plans), exceedance of the 1 hour average in respect of the alert threshold is to be measured or predicted for three consecutive hours.

Alert threshold1 hour average(1)240 μg/m3
Information threshold1 hour average180 μg/m3