Section 34

If the Director General is satisfied on the application of any person interested that it is expedient to do so for the purpose of enabling investigation or research relevant to the problem of pollution to be

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carried out without rendering the applicant liable to proceedings under this Act or the regulations made thereunder, the Director General may by notice in writing to the applicant exempt, wholly or to a limited extent any premises or any equipment or industrial plant, subject to such conditions and for such period as may be specified in the notice.