law: Air (Prevention and Control of Pollution) Act, 1981
  35. Annual Report.
  (1)
  
  The Central Board shall, during each financial year, prepare, in such form as
  
  may be prescribed, an annual report giving full account of its activities under
  
  this Act during the previous financial year and copies thereof shall be
  
  forwarded to the Central Government within four months from the last date of
  
  the previous financial year and that Government shall cause every such report
  
  to be laid before both Houses of Parliament within nine months of the last date
  
  of the previous financial year.
  (2)
  
  Every State Board shall, during each financial year, prepare, in such form as
  
  may be prescribed, an annual report giving full account of its activities under
  
  this Act during the previous financial year and copies thereof shall be
  
  forwarded to the State Government within four months from the last date of the
  
  previous financial year and that Government shall cause every such report to be
  
  laid before the State Legislature within a period of nine months from the last
  
  date of the previous financial year.