Under operating conditions, a grease interceptor may not be located in an area where surrounding temperatures are below what threshold?

• A. Below 40°F
• B. Below 32°F
• C. Below 50°F
• D. Below 60°F

Answer: (A)

Ambient temperature affects how a grease interceptor functions. When the surrounding area gets cold, fats and oils in the wastewater can begin to solidify or thicken, and solids may cling to the interior surfaces. This makes the trap less effective at separating grease, increases maintenance needs, and raises the risk of blockages and odors. To keep the device performing as intended, it should be located in a space that stays above that cold threshold, preventing grease from hardening and reducing the chance of freezing in the trap and pipes. That’s why it’s not placed in areas that get too cold. The other temperature ranges described would not pose the same risk of grease solidification or freezing to the same degree.