For commercial land clearing using an Air Curtain Incinerator, the burn must be at least how many feet away from occupied buildings?

• A. 300 feet
• B. 600 feet
• C. 1000 feet
• D. 1500 feet

Answer: (C)

When evaluating setbacks for a burn with an Air Curtain Incinerator during commercial land clearing, the key idea is protecting occupied buildings from heat and smoke. The required separation from occupied structures is one thousand feet. That distance creates a protective buffer against radiant heat and nuisance smoke, and it also accounts for variable wind and ember drift, reducing the chance that smoke or embers reach nearby buildings or people. Smaller setbacks—three hundred or six hundred feet—pose more risk of exposure, while a much larger distance like fifteen hundred feet goes beyond what's typically required. Always verify local regulations, but the standard guidance for this scenario is one thousand feet.