§ 3 Noise pollution from wind turbines may not exceed the following limits:
1) At the most affected point outdoors at a maximum 15 m from nearby accommodations in the open countryside:
a) 44 dB(A) at a wind speed of 8 m/s.
b) 42 dB(A) at a wind speed of 6 m/s.
2) At the most affected point outdoors in areas of noise-sensitive land use:
a) 39 dB(A) at a wind speed of 8 m/s.
b) 37 dB(A) at a wind speed of 6 m/s.
In this Order shall apply:
1) Nearby accommodations: Any other than residential wind turbine owner’s private living quarters.
2) Noise-sensitive land use: Areas to be used for or planning designated for residential, institutional, cottage or colony purpose or recreational areas.
Environment Ministry, 14 December 2006
(translation mostly automated via Google)