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Subpart 1.


These standards describe the limiting levels of sound established on the basis of present knowledge for the preservation of public health and welfare. These standards are consistent with speech, sleep, annoyance, and hearing conservation requirements for receivers within areas grouped according to land activities by the noise area classification (NAC) system established in part 7030.0050. However, these standards do not, by themselves, identify the limiting levels of impulsive noise needed for the preservation of public health and welfare. Noise standards in subpart 2 apply to all sources.

Subp. 2.

Noise standards.

Noise Area Classification Daytime Nighttime
L50 L10 L50 L10
1 60 65 50 55
2 65 70 65 70
3 75 80 75 80

Statutory Authority:

MS s 116.07


11 SR 43; 18 SR 614

Published Electronically:

December 12, 2003

Official Publication of the State of Minnesota
Revisor of Statutes