Per the Allegheny County Code, recreational burning is permitted, however the fire must meet the following conditions: the fire must be controlled in an area no bigger than 4 feet by 4 feet, the materials being burnt must be clean, natural woods - no garbage, treated / painted lumber, plastics. Also per the County Code, the odor and smoke from the fire must be contained within your property limits. If the smoke or odor travel onto neighboring properties and the neighbors do not wish to have the smoke and/or odor within their property, the fire can be ordered to be extinguished by a Borough Official (Police Officer, Fire Officer,etc.).
