law: Water (Prevention and Control of Pollution) Act, 1974
  8. Meeting of Board.
  
  A board shall meet at least once in every
  
  three months and shall observe such rules of procedure in regard to the
  
  transaction of business at its meetings as may be prescribed :
  
  Provided that if, in the opinion of the chairman, any business of an
  
  urgent nature is to be transacted, he may convene a meeting of the Board at
  
  such time as he thinks fit for the aforesaid purpose.