All environmental air exhaust outlets must be at least how far from property lines?

The correct answer is that all environmental air exhaust outlets must be at least 3 feet from property lines. This distance is set to ensure that exhaust gases, such as those from HVAC systems, do not negatively impact neighboring properties. The 3-foot distance allows for adequate dispersion of the exhaust air, reducing the risk of the exhaust re-entering open windows, doors, or any air intakes of adjacent buildings. Additionally, this requirement helps to mitigate potential health risks and unpleasant odors that may affect nearby residents.

The chosen distance of 3 feet is in line with safety and public health considerations, ensuring that environmental air is managed responsibly and effectively within residential and commercial areas.