AR HB1505

Amends Arkansas Code § 8-4-303(11) to clarify the definition of "NAAQS state implementation plan" by specifying it must implement duties under the Clean Air Act, 42 U.S.C. § 7410, for attainment and maintenance of National Ambient Air Quality Standards.

Requires written explanations in the record for any emission limits, work practices, operational standards, environmental standards, analytical methods, air dispersion modeling requirements, or monitoring requirements incorporated into a proposed state implementation plan.

Written explanations must demonstrate reasoned consideration of applicable factors, the need for each measure in attaining or maintaining National Ambient Air Quality Standards, and that requirements are based on generally accepted scientific knowledge and engineering practices.

Allows departments to satisfy documentation requirements by reference to regulation when standards or requirements are identical to Arkansas Pollution Control and Ecology Commission regulations or federal regulations.

In all other cases, the department must provide its own justification with appropriate reference to scientific and engineering literature or written studies conducted by the department.