Guidance

TAG: environmental impacts worksheets

Software used to calculate the monetised impacts of noise, air quality, biodiversity, townscapes and greenhouse gas emissions in appraisal schemes.

• From: Department for Transport
• Published: 29 November 2018
• Last updated: 2 June 2026
  Show all updates

  1. 2 June 2026

     Updated air quality valuation workbook added.

  2. 28 May 2026

     Air quality valuation, greenhouse gases, landscape monetisation, noise and noise - aviation workbooks updated.

  3. 11 December 2025

     Greenhouse gases, air quality, landscape monetisation, noise and noise (aviation) workbooks updated.

  4. 29 May 2025

     Updated aviation noise, noise, landscape monetisation, air quality and greenhouse gases workbooks.

  5. 28 November 2024

     Air quality, greenhouse gases, landscape monetisation, noise and noise (aviation) workbooks updated and forthcoming changes for May 2025 added.

  6. 30 May 2024

     Updated aviation noise, noise, landscape, air quality and greenhouse gases workbooks.

  7. 30 November 2023

     Updated air quality, aviation noise, landscape monetisation and noise workbooks.

  8. 6 October 2023

     Added forthcoming change about carbon valuation.

  9. 31 May 2023

     Updated air quality, aviation noise, greenhouse gases, landscape monetisation and noise workbooks.

  10. 30 November 2022

      Updated aviation noise, noise, landscape, air quality and greenhouse gases workbooks.

  11. 30 May 2022

      Updated aviation noise, noise, landscape, air quality and greenhouse gases workbooks.

  12. 29 November 2021

      Updated aviation noise, noise, landscape, air quality and greenhouse gases workbooks.

  13. 11 October 2021

      Addition of forthcoming change greenhouse gas workbook with updated carbon values.

  14. 30 July 2021

      Added landscape monetisation worksheet and latest versions of air quality, greenhouse gases and noise worksheets. Removed sensitivity testing documents.

  15. 19 May 2021

      Added TAG environmental impact worksheets.

  16. 23 July 2020

      Added sensitivity testing workbooks for air quality valuation, greenhouse gases, noise and noise - aviation.

  17. 9 July 2020

      Changes to noise and noise aviation workbooks: annual parameters outturn data based on March 2020 publication, and corrected values of a 1Db change in noise (£/HH/annum) to match with July 2020 TAG Data Book. Changes to air quality and greenhouse gases workbook: annual parameters outturn data based on March 2020 publication.

  18. 29 May 2020

      Update to Air Quality Valuation, Greenhouse Gases, Noise, and Noise - Aviation workbooks. Including updates to GDP deflator and GDP per capita.

  19. 18 June 2019

      Error correction: spreadsheet altered to correct an assignment error previously attributing 'concentration other impacts' to incorrect pollutants.

  20. 31 May 2019

      Updated to implement the draft air quality valuation worksheets and for latest updated to annual parameters and removal of sensitivity worksheets.

  21. 1 May 2019

      Draft forthcoming change air quality valuation and local air quality workbook added.

  22. 29 November 2018

      First published.

Documents

Air quality valuation workbook

MS Excel Spreadsheet, 786 KB

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Local air quality workbook

66.1 KB

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Biodiversity worksheet

MS Excel Spreadsheet, 27.3 KB

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Greenhouses gases workbook

MS Excel Spreadsheet, 177 KB

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Historic environment worksheet

MS Excel Spreadsheet, 27.1 KB

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Landscape monetisation workbook

597 KB

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Landscape worksheet

MS Excel Spreadsheet, 25.9 KB

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Noise workbook

MS Excel Spreadsheet, 473 KB

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Noise workbook – aviation

MS Excel Spreadsheet, 1.64 MB

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Townscape worksheet

MS Excel Spreadsheet, 27.3 KB

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Water environment worksheet

MS Excel Spreadsheet, 27.2 KB

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Details

Worksheets supplying the software used to calculate the monetised impacts of the following factors in transport appraisal schemes:

• noise
• air quality
• biodiversity
• townscapes
• greenhouse gas emissions