law: Air (Prevention and Control of Pollution) Act, 1981
  4. State Pollution Control Board Constituted Under Section 4 of Act 6 of 1974 to be State Boards under this Act.
  In
  
  any State in which the Water (Prevention and Control of Pollution) Act, 1974,
  
  is in force and the State Government has constituted for that State a State
  
  Pollution Control Board under Section 4 of that Act such State Board shall be
  
  deemed to be the State Board for the Prevention and Control of Air Pollution
  
  constituted under Section 5 of this Act, and accordingly that State Pollution
  
  Control Board shall, without prejudice to the exercise and performance of its
  
  powers and functions under that Act, exercise the powers and perform the
  
  functions of the State Board for the prevention and control of air pollution
  
  under this Act.