129. The noise emitted by a plant referred to in section 127, represented by the reference noise level measured at the dwelling or public institution, must not exceed, over any 1-hour period, the higher of the following levels:(1) the residual noise level;
(2) 40 dBA between 7:00 p.m. and 7:00 a.m., and 45 dBA between 7:00 a.m. and 7:00 p.m.
The first paragraph does not apply to(1) a dwelling owned by or rented to the owner or operator of the plant;
(2) a dwelling in a temporary industrial camp;
(3) educational institutions and tourist establishments when they are closed.