# The Environmental Authorisations (Scotland) Regulations 2018, Paragraph 18


(1) All emission limit values are to be calculated—
(a) at a temperature of 273.15K,
(b) a pressure of 101.3kPa, and
(c) after correcting for the water vapour content of the waste gases.
(2) Emission limit values are standardised at 11% oxygen in waste gas unless sub-paragraph (3) applies.
(3) This sub-paragraph applies to—
(a) the incineration of mineral waste oil, in which case, they are standardised at 3% oxygen, and
(b) the circumstances referred to in paragraph 25(7)(c) and (8) of this schedule,
(4) Daily average emission limit values (mg/Nm3) for the polluting substances listed in column 1 of Table 2 are as listed in column 2.
Table 2
Total dust
10
Gaseous and vaporous organic substances, expressed as total organic
carbon (TOC)
10
Hydrogen chloride (HCl)
10
Hydrogen fluoride (HF)
1
Sulphur dioxide (SO2)
50
Nitrogen monoxide (NO) and nitrogen dioxide (NO2), expressed as NO2
for existing waste incineration plants with a nominal capacity exceeding
6 tonnes per hour or new waste incineration plants
200
Nitrogen monoxide (NO) and nitrogen dioxide (NO2), expressed as NO2
for existing waste incineration plants with a nominal capacity of
6 tonnes per hour or less
400
(5) Half-hourly average emission limit values (mg/Nm3) for the polluting substances listed in column 1 of Table 3 are as listed in columns 2 and 3.
Table 3
(100%) A
(97%) B
Total dust
30
10
Gaseous and vaporous organic substances, expressed
as total organic carbon (TOC)
20
10
Hydrogen chloride (HCl)
60
10
Hydrogen fluoride (HF)
4
2
Sulphur dioxide (SO2)
200
50
Nitrogen monoxide (NO) and nitrogen dioxide
(NO2), expressed as NO2 for existing waste incineration plants with a nominal capacity exceeding
6 tonnes per hour or new waste incineration plants
400
200
(6) Average emission limit values (mg/Nm3) for the heavy metals in column 1 of Table 4 are as listed in column 2 (over a sampling period of a minimum of 30 minutes and a maximum of 8 hours) and cover the gaseous and vapour forms of the relevant heavy metal emissions and their compounds.
Table 4
Cadmium and its compounds, expressed as cadmium (Cd)
Total of Cd + Tl and their compounds: 0.05
Thallium and its compounds, expressed as thallium (Tl)
Mercury and its compounds, expressed as mercury (Hg)
Total: 0.05
Antimony and its compounds, expressed as antimony (Sb)
Total of Sb + As + Pb + Cr + Co + Cu + Mn + Ni + V and their compounds: 0.5
Arsenic and its compounds, expressed as arsenic (As)
Lead and its compounds, expressed as lead (Pb)
Chromium and its compounds, expressed as chromium (Cr)
Cobalt and its compounds, expressed as cobalt (Co)
Copper and its compounds, expressed as copper (Cu)
Manganese and its compounds, expressed as manganese (Mn)
Nickel and its compounds, expressed as nickel (Ni)
Vanadium and its compounds, expressed as vanadium (V)
(7) The average emission limit value (ng/Nm3) for dioxins and furans over a sampling period of a minimum of 6 hours and a maximum of 8 hours is 0.1, which refers to the total concentration of dioxins and furans calculated in accordance with Chapter 2 of this schedule.
(8) Emission limit values (mg/Nm3) for carbon monoxide (CO) in the waste gases are—
(a) 50 as a daily average value,
(b) 100 as a half-hourly average value,
(c) 150 as a 10-minute average value,
(9) SEPA may grant exemptions from the emission limit values in sub-paragraph (8) for waste incineration plants using fluidised bed technology, in which case, the emission limit value for carbon monoxide (CO) must be set at no more than 100 mg/Nm3 as an hourly average value.
(10) Emission limit values applicable in the circumstances described in paragraphs 5(1)(g) and 6(k) and (l) of this schedule are—
(a) the total dust concentration in the emissions into the air of a waste incineration plant must not exceed 150 mg/Nm3 expressed as a half-hourly average,
(b) the air emission limit values for TOC and CO set out in sub-paragraph (5) and (8) must not be exceeded.

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Source: https://www.legislation.gov.uk/ssi/2018/219/schedule/22/paragraph/18 (the official version)
Page: https://openlegislation.uk/environmental-authorisations-scotland-regulations-2018/schedule-22/paragraph-18
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.