s 37 Self-monitoring and submission of results
37.—(1) The Director-General may, by written notice, require the owner or occupier of any premises from which any air impurity, trade effluent or hazardous substance is generated and emitted into the atmosphere, discharged into the public sewerage system or any land, drain or inland waters to install suitable monitoring equipment or systems at any point along the line of discharge, to monitor the quality or quantity of such emission or discharge or both. (2) The owner or occupier of any premises with monitoring equipment or systems installed must —(a) ensure that the equipment or systems are working in a proper and efficient manner; (b) keep a proper record of all monitoring results; and (c) submit the records to the Director‑General as the Director‑General may require. (3) Any monitoring result which shows that any standard prescribed in the regulations has not been complied with is, until the contrary is proved, admissible as evidence in any proceedings against the owner or occupier of the premises for failure to comply with any provision of this Act. (4) Without limiting subsection (3), the Director‑General may, by written notice, require the owner or occupier of the premises to install further suitable devices or systems to prevent the emission of air impurities, discharge of trade effluent or emission or discharge of any hazardous substance, if the level of emission or discharge fails to comply with the prescribed standards or requirements. (5) Any person who, without the written consent of the Director‑General, alters or causes to be altered any monitoring equipment or system mentioned in subsection (1) shall be guilty of an offence.