Yucaipa Municipal Code Art. 5 Noise Hazard (nh) Overlay

§ 85.020501. Intent.

The Noise Hazard (NH) Overlay District is created to provide greater public safety by establishing land use review procedures and requirements for land uses in areas with identified high noise levels.

§ 85.020505. Locational requirements.

(a) The Noise Hazard Overlay should be applied to those areas where the Average Day-Night Sound Level (Ldn) is 65 decibels, 65 dBA, or greater.

(b) The Noise Hazard Overlay District shall be designated by the symbol (NH) on the City of Yucaipa Official Land Use Plan.

§ 85.020510. Development standards.

When a land use application or development permit is proposed within the Noise Hazard Overlay District, the following standards shall apply with respect to residential uses.

(a) Noise levels shall be identified. An acoustical report shall be performed to identify noise impact, and any recommendation for noise attenuation or other mitigation measures shall be incorporated into the design standards or conditions of approval, as applicable.

(b) Interior noise levels in all single family and multi-family residences and educational institutions shall not exceed 45 dBA Ldn emanating from sources outside of the residential building.

(c) Exterior noise levels in all single family residential land use areas and multi-family residential land use areas should not exceed 65 dBA Ldn. Exterior noise levels shall not exceed 70 dBA for any residential use areas.

(d) Ability to mitigate exterior noises to the levels of 65 dBA Ldn and 70 dBA Ldn shall be considered by the reviewing authority when determining the actual Ldn level with which the land uses must comply.

(e) In areas where noise exceeds the noise standard, measures shall be taken to mitigate noise levels. An acoustical report identifying these mitigation measures shall be required and reviewed by the Community Development Department prior to issuance of any required development permits or approval of land use applications.

(f) All other structures shall be sound attenuated against the combined input of all present and projected exterior noise to not exceed the following criteria.

12-Hour Equivalent Sound Level (Interior)

Typical Uses	dBA Ldn
Educational, Institutions, Libraries, Churches, etc	45 dBA
General Office, Reception, etc.	50 dBA
Retail Stores, Restaurants, etc.	55 dBA
Other Areas for Manufacturing, Assembly, Test, Warehousing, etc.	65 dBA

In addition, the average of the maximum levels on the loudest of intrusive sounds occurring during a 24-hour period shall not exceed 65 dBA interior.