(1) On receipt of information with respect to the fact or apprehension of any occurrence of contravention of the provisions of section 3, whether through intimation by some person or on a report of the inspector or otherwise, the Executive Authority shall, as early as practicable, besides taking any other action under this Act, direct the owner or occupier of the premises to take such remedial measures, as may be necessary, within such reasonable time as may be specified therein and in case the owner or occupier, as the case may be, fails to comply with such directions, cause such remedial measures to be taken as are necessary to prevent or mitigate the environmental pollution at the cost of such owner or occupier of the premises.
     (2) The expenses, if any, incurred by the Executive Authority with respect to the remedial measures referred to in sub-section (1), together with interest at such rate as the State Government may specify from the date when a demand for the expenses is made until it is paid, may be recovered by such authority or agency from the person concerned as arrears of land revenue or of public demand.