A number of federal, state, and local regulations are designed to control fugitive emissions of volatile organic compounds (VOCs) and hazardous air pollutants (HAPs). API sponsored this project to present options and recommendations on procedures for obtaining inspection and maintenance (I/M) data from certain process equipment with the potential to leak fugitive emissions. The two resulting manuals focus on the recommended fugitive emission practices in the petroleum industry, specifically for refineries, marketing terminals, and the oil and gas production industries.