Guidance

Use of waste clay in the construction of slurry lagoons or water storage reservoirs: RPS 91

Environment Agency regulatory position on using waste clay in the construction of slurry lagoons or water storage reservoirs

• From: Environment Agency
• Published: 5 December 2017
• Last updated: 13 October 2026
  Show all updates

  1. 13 October 2026

     RPS 91 has been reviewed and extended to 14 October 2027.

  2. 16 October 2023

     Updated the regulatory position statement (RPS) to use the latest version of the RPS template.

  3. 5 December 2017

     First published.

Documents

Use of waste clay in the construction of slurry lagoons or water storage reservoirs: RPS 91

Ref: LIT 10931

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Details

This regulatory position statement (RPS) does not change your legal requirement to have an environmental permit where one is required.

However, the Environment Agency will not normally take enforcement action if you do not comply with this legal requirement if you meet the requirements in the RPS.

The regulatory position does not apply to any other legal requirements.