31.39. In the following cases, the Minister may amend a depollution attestation issued by him or on his behalf:
(1) where the holder of the attestation submits an application for amendment to him;
(2) where the standards prescribed by the Minister with respect to the installation and operation of any apparatus or equipment utilized for the purposes of abating or eliminating the emission, deposit, release or discharge of any contaminant must be amended in order to permit better control over the operation of municipal wastewater treatment works;
(3) where the methods or standards prescribed by the Minister with respect to the control and monitoring of the discharge of contaminants, including the procedure for transmitting the statements of the results obtained, must be amended to permit better control over the sources of contamination.
Where the Government amends any of the contaminant discharge standards referred to in paragraph 3 of section 31.34 and considers that failure to include any one of them in the depollution attestation could threaten public health and safety, the Minister shall include the discharge standards so amended in the attestation and adjust the corrective programme accordingly.
Before rendering his decision, the Minister shall transmit notice of the amendment to the holder of the depollution attestation and allow him the opportunity to present his point of view within a period of 30 days following reception of the amendment notice.