Except as required for safe aircraft takeoff and landing operations, airspace activity associated with coastal development shall not impose an increase in average noise exceeding 10 dBA above background levels.  Noise measurements shall be normalized Ldn as set forth by the Environmental Protection Agency in its report 550/9‑74‑004 entitled Information on Levels of Environmental Noise Requisite to Protect the Public Health and Welfare with an Adequate Margin of Safety.  The maximum noise level associated with any single event shall not exceed 85 dBA.  These limits shall not apply where noise impacts are confined to surface areas owned or controlled by the project's proponent.  Any noise monitoring required to ensure compliance with this Rule shall be the responsibility of the proponent.


History Note:        Authority G.S. 113A‑107(a),(b);

Eff. March 1, 1990.