Virtually every state has enacted air quality regulations that require facilities with the potential to emit air pollutants above specified levels to obtain construction and/or operating permits. State regulations may vary in terms of permit requirements and the time-frame for authorizing and issuing permits. The project development team will confirm that the engineering firm or permit consultant with whom they may contract for these services is properly licensed in the state. The project development team should also review applicable work of the prospective firm(s) to determine relevant experience in these important areas. The project team should maintain an awareness of permit conditions and requirements that may affect plant operations initially, and in the future if plant expansion is contemplated.