True or False: The Britter-McQuaid puff model should not be applied to passive releases if the most conservative outcomes are required.

The statement is true because the Britter-McQuaid puff model is primarily designed for modeling buoyant, continuous releases rather than passive releases. In situations involving passive releases, where the plume behavior is influenced by factors like wind speed and atmospheric stability, using a model that is not specifically designed for such conditions can result in less conservative or accurate predictions.

This model may not adequately account for the dispersion dynamics that are typical of passive releases, which could lead to misestimations of concentration levels and potential exposure. Therefore, when conservative outcomes are crucial, relying on a model that does not appropriately fit the characteristics of the release scenario would likely yield results that aren’t as reliable for safety assessments or regulatory compliance. It's essential to apply the appropriate modeling approach that aligns with the nature of the release to ensure that risk assessments are appropriately conservative.