Guidance

Monitoring stack emissions: low risk MCPs and specified generators

How to monitor emissions from low risk medium combustion plants (MCPs) and specified generators (SGs). This document was previously known as TGN M5.

• From: Environment Agency
• Published: 16 February 2021
• Last updated: 4 June 2024 — See all updates

Applies to England

Documents

Monitoring stack emissions: low risk MCPs and specified generators

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This guidance provides a standardised approach to monitoring stack gas emissions from low risk plants regulated under the:

• Medium Combustion Plant Directive(MCPD) 2015/2193/EU Directive on the limitation of certain pollutants into the air from medium combustion plant
• Specified Generator Regulations (SGRs) EPR 2018 Schedule 25B 2 (1) – Specified Generators

This guidance is for operators of:

• low risk MCPs and SGs with standard rules permits
• MCPs and SGs that are not low risk but have a condition in their permit that says they must use this guidance when monitoring compliance with emissions limits

Published 16 February 2021
Last updated 4 June 2024 + show all updates

1. 4 June 2024

   Clarified in section 10 'If you are following the monitoring approach in this guidance, you must not exceed a expanded measurement uncertainty of ±20% for nitrogen oxides.' and 'When assessing compliance for nitrogen oxides, we will use a fixed expanded measurement uncertainty of ±20%.

2. 20 March 2024

   Removed reference to MCPD Help and replaced with MCP Returns.

3. 12 July 2022

   Certified range multiplier changed from 2.5 to 6.5.

4. 16 February 2021

   First published.