Regulation 16 Other assessment requirements
When the National Assembly undertakes assessments as respects—
Group A pollutants or Group B pollutants, by the methods other than fixed measurement which are permitted by regulation 13(3) or 14(3); or
ozone, by methods other than fixed continuous measurement which are permitted by regulations 13(7) and 14(4),
it must comply with the requirements of the relevant Part of Schedule 7 when using those other methods.
When conducting any assessment under this Chapter, the National Assembly must have regard to the relevant data quality objectives set out in Schedule 8.
The National Assembly must undertake assessments in accordance with—
the relevant reference methods required by Schedule 9; or
any alternative reference methods, where it considers that the method in question gives equivalent results to the relevant method required by Schedule 9.
Measurements of volume of benzene, carbon monoxide, nitrogen dioxide, oxides of nitrogen, ozone and sulphur dioxide are to be standardised at a temperature of 293K and a pressure of 101.3 kPa.