9-404.050 - NOISE EXPOSURE—LAND USE REQUIREMENTS AND LIMITATIONS — San Joaquin County Zoning Code

Table 9-404.050, Noise Exposure-Land Requirements and Limitations, describes the requirements and limitations of various land uses within the listed Day/Night Average Sound Level (Ldn) ranges that must be addressed in required acoustical studies.

TABLE 9-404.050: NOISE EXPOSURE - LAND USE REQUIREMENTS AND LIMITATIONS	TABLE 9-404.050: NOISE EXPOSURE - LAND USE REQUIREMENTS AND LIMITATIONS
Land Use	Day/Night Average Sound Level (Ldn)	Requirements and Limitations
Residential: Single Unit Dwelling, Duplex, Bungalow Court, and Townhouse	Less than 65	Normally acceptable
	65 to 75	Conditionally acceptable; acoustic study and noise attenuation measures required
	Over 75	Unacceptable; acoustic study and noise attenuation measures required
Residential Multi-family, Group Residential, and Transient Lodging	Less than 65	Normally acceptable
	Over 65	Conditionally acceptable; acoustic study and noise attenuation measures required
Schools, Libraries, Community Assembly, Hitl Rlii Abl Ridtil	Less than 65	Normally acceptable
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Care, Playgrounds, Parks, Commercial, and Ofce	65 and Over	Conditionally acceptable; acoustic study and noise attenuation measures required
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Agricultural, Industrial, and Utilities; golf courses, riding stables, water sports, and cemeteries	Less than 75	Normally acceptable
	75 and over	Conditionally acceptable; acoustic study and noise attenuation measures required; avoid uses involving concentrations of people
New residential development in noise impacted areas are subject to the following noise levels: 1. For new single-unit residential development, maintain a standard of 60 Ldn for exterior noise in private use areas. 2. For new multi-unit residential development maintain a standard of 65 Ldn in community outdoor recreation areas. Noise standards are not applied to private decks and balconies. 3. Where new residential units would be exposed to intermittent noise levels generated during train operations, maximum railroad noise levels inside homes shall not exceed 45 dBA in bedrooms or 55 dBA in other occupied spaces. These single event limits are only applicable where there are normally four or more train operations per day.