306.05: NOISE: — Porterville Zoning Code

A. General Requirements. No use may generate noise that is in violation of the City’s Noise Standards contained in Chapter 18, Article IX, of the Porterville Municipal Code or other standards as may be adopted by the City Council.
B. Acoustic Study. An acoustic study shall be required for any proposed project which could create or be subject to a noise exposure greater than that deemed “normally acceptable” by the General Plan.
C. Noise Attenuation Measures. Noise attenuation measures necessary to reduce noise impacts to acceptable levels to the extent feasible may be required to be incorporated into a project in accordance with the following:

All new residential development shall achieve interior noise level reductions through sound insulation and other measures to meet the General Plan land use compatibility standards by acoustical design and construction of the structure and building elements.
New dwelling units exposed to an exterior DNL above sixty-five (65) dB shall incorporate the following noise reduction measures:

a. All facades shall be constructed with substantial weight and insulation;
b. Sound-rated windows providing noise reduction performance similar to that of the façade shall be included for all exterior entries;
c. Acoustic baffling of vents is required for chimneys, fans, and gable ends; and
d. Installation of a mechanical ventilation system affording comfort under closed window conditions.

Sound walls or other attenuation measures designed to reduce noise by a minimum of ten (10) dB in residential areas adjacent to State highways when additional lanes are added or when new residential development or sensitive receptors would be exposed to noise above sixty-five (65) dB.
Other measures identified in an acoustic study conducted for the proposed project as necessary to reduce noise levels to “normally acceptable” levels. (Ord. 1866, 11-19-2019)