1 and the standard values of five types of urban environmental noise are as follows
2. The noise standard values at the boundary of each factory are as follows
A, urban regional environmental noise standards
1, scope of application of various standards
(1) Level 0 standard is applicable to areas that need to be quiet, such as convalescent areas, senior villa areas and senior hotel areas. Located in the suburbs and rural areas, such areas shall be implemented according to the standard of 5 decibels stricter than Class 0.
The first category of standards is applicable to areas with residential, cultural and educational institutions as the mainstay. Rural living environment can be implemented with reference to such standards.
The secondary standard is applicable to residential, commercial and industrial mixed areas.
Three standards are applicable to industrial zones.
The four standards are applicable to the areas on both sides of urban road traffic trunk lines and the areas on both sides of inland waterways passing through urban areas. This kind of standard is also applicable to the limits of background noise (which refers to the noise level of outdated trains) on both sides of the main and secondary lines of railways passing through cities.
2. Sudden noise at night
The maximum value of sudden noise at night shall not exceed the standard value 15 dB.
Second, the noise standard at the boundary of industrial enterprises
1, which defines the applicable scope of various standards.
The first category of standards is applicable to areas with residential, cultural and educational institutions as the mainstay.
Class II standards are applicable to residential areas, industrial and commercial mixed areas and commercial center areas.
Three standards are applicable to industrial zones.
The four types of standards are applicable to the areas on both sides of main roads.
2, frequent sudden noise at night (such as exhaust noise). Its peak value is not allowed to exceed the standard value 10 dB, and the peak value of occasional sudden noise (such as short whistle sound) at night is not allowed to exceed the standard value 15 dB.
reference data
Link to the webpage of People's Republic of China (PRC) Environmental Noise Pollution Prevention Law.