No pollution control equipment is used Any physical or operational limitation on the capacity of the source to emit an air pollutant, including air pollution control equipment and restrictions on hours of operation or on the type or amount of material combusted, stored, or processed, shall be treated as part of its design if the limitation is federally enforceable. Even if you never operate at your PTE, it is physically possible to do so. These include all emissions from vents and stacks, or emissions which could reasonably pass through a vent or stack. However, fugitive emissions must be calculated only for those pollutants that are regulated by the NSPS for that source category. For example, fugitive emissions of NOx and SOx from gas turbines must be included in determining whether a stationary source is required to obtain a Part 70 permit.
Fugitive emissions are usually particulate matter or VOCs.
They do not include emissions from emission units installed within a building. Fugitive emission sources can vary significantly even between similar plants or businesses. Therefore, every attempt should be made to quantify fugitive emissions through a source-specific engineering analysis. Not all emission sources are obvious. Besides stack and vents for manufacturing processes, attention must be paid to auxiliary activities at the plant.