A development near a potential odour source needs a brief that explains both the proposed use and the surrounding activity. Bring the available information together without assuming that a source is harmless, unacceptable or responsible for every reported smell. A factual starting point helps the appointed assessor frame the site-specific questions.
Explain the receiving development
Provide the current site boundary, layout and intended uses. Identify relevant proposed occupied areas and outdoor spaces, while allowing the assessor to establish the receptors appropriate to the scope. Include the planning stage and any authority correspondence asking for information.
Describe which elements remain provisional. A change in layout or use can alter the assessment question, so it should be visible in the brief rather than buried in a drawing issued by another team.
Collect available source context carefully
Identify nearby activities that may be relevant and the sources of the information supplied. Separate verified operating information, public records and observations from assumptions. If access to operational details is unavailable, record that limitation for the assessor.
Avoid presenting a single visit or informal observation as proof of the longer-term odour environment. The Institute of Air Quality Management’s odour guidance provides professional assessment context; the appointed consultant should determine the appropriate evidence and method.
Turn uncertainty into assessment questions
Use a short questions log covering the proposed development, nearby activity, available records and missing information. State who can obtain further project or authority information. Ask the assessor to explain the agreed scope and relevant limitations before the team relies on the output.
This article does not determine statutory nuisance, diagnose health effects or supply a universal separation distance. Its purpose is to make the information behind the assessment brief clear and traceable, and to keep conclusions within the responsible specialist’s remit.
Information register
| Brief item | Information to assemble |
|---|---|
| Proposal | Current layout and intended occupation |
| Surroundings | Relevant activity and the source of that information |
| Authority context | Correspondence and assessment questions |
| Uncertainty | Missing records, assumptions and data owners |
A practical example
Illustrative example: An applicant has an informal report of odour near the site but no operating information. They identify the observation as limited, provide the current layout and ask the assessor what further evidence is appropriate. They do not turn that report into a conclusion about the source.
Before the next issue
- Describe the proposed uses clearly.
- Identify the information sources.
- Separate observations from assumptions.
- Include the authority’s questions.
- Agree the assessment scope and limitations with the assessor.
For the relevant specialist scope, see ACP’s specialist assessment service.
Professional context: IAQM odour guidance, Government air quality planning guidance.
To discuss the project information or review scope, contact ACP with the current proposal and the specific question that needs resolving.