Final answer:
Small arms ammunition that were buried with intent to discard belong in the category of Hazardous Waste.
Step-by-step explanation:
The small arms ammunition that were buried with intent to discard belong in the category of Hazardous Waste.
Hazardous waste is defined as any solid waste or combination of solid waste that because of its quantity, concentration, or physical, chemical, or infectious characteristics may cause an increase in mortality or serious illness, or pose a substantial present or potential hazard to human health and the environment when improperly treated, stored, transported, or disposed of.
In the case of small arms ammunition, it could pose a potential hazard due to its composition, particularly if the ammunition contains potentially dangerous substances.