The total of all air pollution releases that did not come confined process streams such as factory or car exhausts. Fugitive release come from small leaks but when combined contribute significantly to greenhouse gas emissions. Fugitive equipment leaks come from valves, pump seals, flanges, compressors, sampling connections, and open-ended lines. It also includes releases from building ventilation systems, and  any other fugitive or non-point air emissions from land treatment, mine tailings, storage piles, etc.