| a) | Group I and Group II hazardous substances; or |
| b) | Group III and Group IV hazardous substances, |
and any such inspector shall, in respect of any substance in respect of which he has been so appointed, and subject to the control of the Director-General, be vested with the powers, duties and functions conferred or imposed on an inspector by this Act.
| 2) | Each person appointed under subsection (1) shall be provided with a letter of authority signed by or on behalf of the Director-General and certifying that such person has been appointed as an inspector in terms of this Act and indicating for which groups of hazardous substances he has been so appointed. |
| 3) | The powers, duties and functions of an inspector for Group I and Group II hazardous substances may also be exercised or performed— |
| a) | by an officer of the Office of the Commissioner for Customs and Excise authorized thereto in writing by the Commissioner for Customs and Excise; |
| b) | for the purposes of the enforcement of any provision of this Act, by a local authority under the provisions of section 24, by any person employed by such local authority and authorized thereto in writing by such local authority; |
| c) | by any member of the South African Police of or above the rank of sergeant; |
| d) | by any member of the South African Police below the rank of sergeant authorised thereto in writing by a member referred to in paragraph (c). |
