Odour Impact Assessment

IAQM Odour Guidance — Source, Pathway, Receptor Analysis

IAQM Compliant
FIDOL Matrix
Effect Descriptor

Development Context

Odour Source Characteristics (FIDOL Factors)

Pathway Factors

Select all factors that apply to the pathway between source and receptor:

Existing or Proposed Mitigation

Select all mitigation measures that are in place or proposed:

Assessment Results

Source Odour Potential

0.0
FIDOL average score (0-5)

Receptor Sensitivity

0
Location sensitivity factor (1-5)

Pathway Multiplier

1.0
Based on distance & conditions

Mitigation Reduction

0%
Effectiveness of controls

Distance Decay Factor

1.0
Based on distance (m)

Final Risk Score

0.0
Adjusted impact rating

FIDOL Factor Breakdown

Frequency
0
0/5
Intensity
0
0/5
Duration
0
0/5
Offensiveness
0
0/5
Negligible:
No significant odour impact (< 2)
Slight Adverse:
Awareness but not objectionable (2-5)
Moderate Adverse:
Objectionable, likely complaints (5-10)
Substantial Adverse:
Unacceptable for planning (> 10)

About this tool: Odour Impact

IAQM odour screening — source-pathway-receptor analysis, separation distances, and sensitivity of proposed or surrounding uses.

When to use it

Use where the site is near a sewage works, food production, agriculture or waste facility, or where you are introducing odour-sensitive uses near an existing source.

Policy and guidance it draws on

IAQM Odour Guidance 2018, NPPF living conditions policy P3

Part of Environmental Intelligence

Use these tools when preparing technical reports and compliance documentation. Many of these are validation requirements — submit without them and your application will be returned. Use the Validation Pre-Flight tool to check which ones you actually need.

Related tools
Energy StatementSustainabilityDrainage StrategyFire SafetyWater EfficiencyWaste ManagementOverheatingVibration

Guidance to help you prepare — not formal planning advice. Check the current policy text and your council's local plan before relying on it.

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