(a)Purpose of section. Sections 35.140 through 35.148 govern Air Pollution Control Grants to State, local, interstate, or intermunicipal air pollution control agencies (as defined in section 302(b) of the Clean Air Act) authorized under section 105 of the Act.(b)Purpose of program. Air Pollution Control Grants are awarded to administer programs that prevent and control air pollution or implement national ambient air quality standards.(c)Program regulations. Refer to 40 CFR parts 49, 50, 51, 52, 58, 60, 61, 62, and 81 for associated program regulations.