Title V operating permits

 
In November 1990 Congress completed a major redrafting of the federal Clean Air Act. Many of these changes dealt with stationary sources of air pollution. One of the most significant changes was the creation of the operating permit program in Title V of the Clean Air Act.

Title V operating permit forms | In MS Word

About operating permits

Sources requiring operating permits
Any source that emits or has the potential to emit more than 100 tons of any regulated air pollutant per year must have an operating permit.