The applicant for an operating permit shall notify the local municipality and county where the air pollution source is to be located that the applicant has applied for the operating permit. The notification shall clearly describe the source and modifications that are to take place. The notice shall state that there is a 30-day comment period which begins upon receipt of the notice by the municipality and county.
25 Pa. Code § 127.413
This section cited in 25 Pa. Code § 127.411 (relating to content of applications).