National Environment Appellate Authority was established under the provision of the National Environment Appellate Authority Act, 1997 to hear appeals with respect to restriction of areas in which any industries, operations or processes or class of industries, operations or processes shall not be carried out or shall be carried out subject to certain safeguards under the Environment (Protection) Act, 1986 and for connected and incidental matters. The act provides that if any person aggrieved by an order which has granted environmental clearance in the areas in which any industries, operations or processes or class of industries, operations and processes are prohibited or are permitted to be carried out subject to certain safeguards may, within thirty days from the date of such order, prefer an appeal to the Authority in such form as may be prescribed subject to the provision that on the satisfaction of the Authority that the appellant was prevented by sufficient cause from filing the appeal in time, the Authority may entertain such appeal after the expiry of the said period of thirty days but not after ninety days from the aforesaid date.
