What is the required separation distance from the edge of a spray area for surface applications?

The correct answer is based on the regulations and guidance provided for surface applications, particularly in relation to minimizing potential off-target effects while ensuring effective application. The statement that there is no required separation distance from the edge of a spray area, with the exception of property lines and swimming pools, indicates that as long as the application adheres to those specific constraints, it can be conducted closer to other areas without set distances. This recognizes that factors like wind direction and application techniques can be controlled effectively, allowing for more flexible application zones.

The mention of property lines and swimming pools is critical because these represent areas where significant concerns about safety and compliance arise. Maintaining appropriate distances from potentially sensitive areas is essential for preventing adverse effects on neighboring properties and ensuring the safety of recreational water use. By specifying the exclusions to the general rule, it clarifies the focus on public safety while also allowing licensed applicators some discretion in managing their operations.