Paragraph 24 Measurement techniquesF1

(1)

Measurements for the determination of concentrations of air and water polluting substances must be carried out representatively.

(2)

The following assessments must be carried out in accordance with relevant British or CEN standards, or where those are not available, ISO or other international standards which ensure the provision of data of an equivalent scientific quality—

(a)

sampling and analysis of all polluting substances including dioxins and furans,

(b)

quality assurance of automated measuring systems,

(c)

reference measurement methods to calibrate the automated measuring systems referred to in head (b).

(3)

Automated measuring systems are to be subject to control by means of parallel measurements with the reference methods at least once per year.

(4)

At the daily emission limit value level, the values of the 95% confidence intervals of a single measured result must not exceed the following percentages of the emission limit values for—

(a)

carbon monoxide, 10%,

(b)

sulphur dioxide, 20%,

(c)

nitrogen dioxide, 20%,

(d)

total dust, 30%,

(e)

total organic carbon, 30%,

(f)

hydrogen chloride, 40%,

(g)

hydrogen fluoride, 40%.

(5)

Periodic measurements of the emissions into air and water must be carried out in accordance with sub-paragraphs (1), (2) and (3).

Annotations

Textual amendments

F1: Sch. 22 inserted (1.11.2025) by The Environmental Authorisations (Scotland) Amendment Regulations 2025 (S.S.I. 2025/165), reg. 1(2), sch. 13 (with sch. 23)