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16.—(1) When the Scottish Ministers undertake assessments by methods other than fixed measurement, they shall comply with the requirements of the relevant Part of Schedule 7 when using those other methods.
(2) When conducting any assessment under this Chapter, the Scottish Ministers shall have regard to the relevant data quality objectives set out in Schedule 8.
(3) The Scottish Ministers shall undertake assessments in accordance with–
(a)the relevant reference methods required by Schedule 9; or
(b)any alternative reference methods, where–
(i)they consider that the method in question can be determined to give equivalent results to the relevant method required by Schedule 9; or
(ii)in the case of the sampling and measurement of PM10 only, they consider that the method in question can be demonstrated to display a consistent relationship to the reference method required by Schedule 9.
(4) Measurements of volume of benzene, carbon monoxide, nitrogen dioxide, oxides of nitrogen, ozone and sulphur dioxide shall be standardised at a temperature of 293K and a pressure of 101.3 kPa.