Odor screening tool
Affected-zone screening
Estimate the maximum distance from a stack where the odor assessment criterion may not be met.

Use this as a first-pass screening tool. Complex cases need a dispersion modeling study.
Limits
A screening value, not a permitting model.
This procedure is intended for simple situations. Complex orography, several nearby buildings, non-standard sources, or permitting questions require a documented dispersion modeling study.
- 01Simple sources
Use this for preliminary screening, not for complex source layouts. - 02Site effects
Complex terrain and multiple buildings require dispersion modeling.