Paragraph 1 InterpretationI1
Northern Ireland Not yet in force
“PM10” means particulate matter, which passes through a size-selective inlet with a 50% efficiency cut-off at 10μm aerodynamic diameter.
Annotations
Commencement
- I1
Sch. para. 1n2 in operation at 1.9.2003, see reg. 1(1)
Notes on Schedule
Textual amendments
- F1
words in Sch. substituted (1.1.2004) by Air Quality (Amendment) Regulations (Northern Ireland) 2003 (S.R. 2003/543), regs. 1, 2
Footnotes
- f1
*
μg/m3: micrograms per cubic metre
ppb/ppm: parts per billion/million
mg/m3: milligrams per cubic metre