Section 33(3) in The Water (Prevention And Control Of Pollution) Rules, 1975
(3)An officer of the Central Board may, before or after carrying out an inspection under sub-rule (1) above, require the applicant to furnish to him, orally or in writing such additional information or clarification, or to produce before him such documents, as he may consider necessary for the purpose of investigation of the application and may, for that purpose, summon the applicant or his authorised agent to the office of the Central Board.
