Which of the following materials would NOT typically be found in a spill response kit?

In a spill response kit, the inclusion of materials is focused on effectively managing and containing spills, particularly those involving hazardous substances like pesticides. Water is not typically included in a spill response kit because it can exacerbate the situation in many cases. For instance, adding water to a chemical spill can lead to the spread of the contaminant or create hazardous conditions, especially if the substance is reactive with water or is meant to be absorbed by absorbent materials instead.

In contrast, absorbent clay is designed specifically to absorb spills, thereby containing and preventing further contamination. Heavy-duty detergents may be included for cleaning surfaces after the initial containment and absorption have been managed, but they would only be used in non-toxic situations or after ensuring that any remaining risks are neutralized. Personal protective equipment (PPE) is critical for ensuring the safety of individuals managing a spill, protecting them from exposure to harmful chemicals. Thus, the choice to not include water highlights the need for careful handling of spills to mitigate risk.