The minimum liquid depth of a type III interceptor is _______ inches.

The minimum liquid depth of a type III interceptor is specified to be 24 inches. This depth is significant because it ensures that the interceptor can effectively separate and retain heavier contaminants, such as oils and grease, from the wastewater that enters the system. The design of these interceptors involves considerations around the flow rates and the specific gravity of the contaminants to ensure proper functionality.

Having a minimum depth of 24 inches contributes to the proper performance of the interceptor, allowing sufficient space for sedimentation and flotation processes to occur. This is essential for maintaining water quality and compliance with environmental regulations, ensuring that discharged water meets appropriate standards before entering sewer systems or natural bodies of water.