20. Replacement of or increase in production: In the case of replacement of or increase in production of a crushing or screening process in a quarry within the meaning of the third paragraph of section 2, such equipment must be located at the same place as before or at a greater distance from any residential, commercial or mixed zone referred to in section 10 or from any structure or immovable referred to in section 11, except in the case where the location of such equipment is beyond the siting distances prescribed in the said sections.
In the case of an applicant who, in the past, under section 12, already obtained a certificate of authorization for a quarry where the crushing or screening processes were located in accordance with the siting standards prescribed in sections 10 and 11, he shall further comply with the requirements of section 22 of the Act for an increase of production in the crushing and screening processes, unless the location of such equipment complies with the aforementioned siting standards.
R.R.Q., 1981, c. Q-2, r. 2, s. 20.