99.10.01

Noise

• Acoustical analysis required within 60 dB CNEL contour

  For any residential development within a sixty (60) decibel CNEL contour, an analysis by a professional architect, engineer or building designer shall demonstrate that the required noise levels will be achieved.

• Acoustical analysis required within 65 dB CNEL contour

  For any residential development within a sixty-five (65) decibel CNEL contour, an analysis by a professional mechanical or acoustical engineer shall demonstrate that the required noise levels will be achieved. Prior to issuing a certificate of occupancy, the building official may require tests by a qualified acoustical technician to confirm that the noise reduction achieved is sufficient to meet the requirements of this section.

• Maximum indoor community noise equivalent level45 dB

  Within each main building, a community noise equivalent level (CNEL) not exceeding forty-five (45) decibels.

• Maximum outdoor community noise equivalent level65 dB

  In outdoor areas, a community noise equivalent level (CNEL) not exceeding sixty-five (65) decibels, except that where it is not reasonably possible to achieve this objective, the development shall be designed to provide the lowest noise level reasonably possible within private open areas and/or common usable open areas of at least one hundred (100) square feet per unit, with access to such area available to the residents of each unit.

• Public address systems not disturbing

  Any public address systems, loudspeakers and other sound-producing equipment shall be designed, installed and operated in a manner which is not disturbing to the surrounding area.