Gasoline Dispensing Facility Emissions

The Environmental Quality Commission adopted rules related to vapor control requirements for gasoline dispensing facilities. Air pollutant emissions from GDFs include volatile organic compounds, which can contribute to ozone, or smog, formation, and toxic air contaminants such as benzene. Ground level ozone is a respiratory irritant and can exacerbate conditions such as asthma. GDFs use vapor control devices at two stages of the gasoline dispensing process to capture such emissions. Stage I gasoline vapor systems capture vapors expelled from underground storage tanks at gas stations when being refilled by tank trucks. Stage II vapor recovery systems capture gasoline vapors generated during the dispensing of gasoline to individual motor vehicles or other similar tanks. Enhanced Vapor Recovery systems further capture gasoline vapor emissions at GDFs.