Eagle will work with your personnel to develop an air permit application that accurately reflects site operating conditions while allowing for optimum flexibility during day-to-day operations. We prepare permits and exemption documentation for our clients in various fields, which include chemical and petrochemical plants, refineries, oil and gas production sites, electric utilities and military bases. Major Source (Title V/Part 70 Operating Permit). Minor Source (State Permit and Exemption). Acid Rain (Title IV). Prevention of Significant Deterioration (PSD).