law: Air (Prevention and Control of Pollution) Act, 1981
  31. Appeals.
  (1) Any person aggrieved by an order made by the State Board under this Act
  
  may, within thirty days from the date on which the order is communicated to
  
  him, prefer an appeal to such authority (hereinafter referred to as the
  
  Appellate Authority) as the State Government may think fit to constitute :
  Provided that
  
  the Appellate Authority may entertain the appeal after the expiry of the said
  
  period of thirty days if such authority is satisfied that the appellant was
  
  prevented by sufficient cause from filling the appeal in time.
  (2)
  
  The Appellate Authority shall consist of a single person or three persons as
  
  the State Government may think fit to be appointed by the State Government.
  (3)
  
  The form and the manner in which an appeal may be preferred under sub-section
  
  (1), the fees payable for such appeal and the procedure to be followed by the
  
  Appellate Authority shall be such as may be prescribed.
  (4)
  
  On receipt of an appeal preferred under sub-section (1), the Appellate
  
  Authority shall, after giving the appellant and the State Board an opportunity
  
  of being heard, dispose of the appeal as expeditiously as possible.