Which of the following is NOT a way chemical trespass can occur?

Chemical trespass refers to the unintended movement of herbicides or other chemicals from their intended application site to a different area. Understanding the various ways that this can occur is key to managing agricultural practices and ensuring compliance with regulations.

Improper storage is not classified as a method of chemical trespass. While it is a critical aspect of ensuring safety and efficacy in herbicide use, it does not involve the physical movement of chemicals across property lines or to unintended locations after they have been applied.

In contrast, spray drift occurs when droplets of herbicide are carried away from the target area by wind, which can result in the application reaching unintended areas. Vapor drift involves the movement of pesticide vapors that can travel away from the application site, especially under certain environmental conditions, leading to unintended exposure in surrounding areas. Water runoff happens when rain or irrigation causes the pesticide from the treated area to wash into nearby water bodies or onto neighboring properties.

Each of these scenarios illustrates a pathway by which herbicides can unintentionally impact areas beyond their intended use, emphasizing the importance of careful application techniques and planning.