law: National Environment Appellate Authority Act, 1997
  21. Power to remove difficulties. – 
  (1) If any difficulty arises in giving effect
  
  to the provisions of this Act, the Central Government may, by order published in
  
  the Official Gazette, make such provisions, not inconsistent with the
  
  provisions of this Act, as appear to it to be necessary or expedient for
  
  removing the difficulty :
  Provided  that no such order shall be made after
  
  the expiry of the period of three years from the date on which this Act
  
  receives the assent of the President.
  (2) Every order made under this section shall,
  
  as soon as may be after it is made, be laid before each House of Parliament.