# The Environmental Authorisations (Scotland) Regulations 2018, Paragraph 28: Formula


(1) The following formula is to be used to calculate the emission concentration at the standard percentage oxygen concentration—
ES=21-OS21-OM×EM
(2) In sub-paragraph (1)—
“ES” means calculated emission concentration at the standard percentage oxygen concentration,
“EM” means measured emission concentration,
“OS” means standard oxygen concentration,
“OM” means measured oxygen concentration.

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Source: https://www.legislation.gov.uk/ssi/2018/219/schedule/22/paragraph/28 (the official version)
Page: https://openlegislation.uk/environmental-authorisations-scotland-regulations-2018/schedule-22/paragraph-28
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.