law: Right to Fair Compensation and Transparency in Land Acquisition, Rehabilitation and Resettlement Act, 2013 
  12. Preliminary
  
  survey of land and power of officers to carry out survey.
  For the purposes of
  
  enabling the appropriate Government to determine the extent of land to be
  
  acquired, it shall be lawful for any officer, either generally or specially authorized
  
  by such Government in this behalf, and for his servants and workmen,—
  a.     
  
    to
  
  enter upon and survey and take levels of any land in such locality;
  b.    
  
    to
  
  dig or bore into the sub-soil;
  c.     
  
    to
  
  do all other acts necessary to ascertain whether the land is adapted for such purpose;
  d.    
  
    to
  
  set out the boundaries of the land proposed to be taken and the intended line
  
  of the work (if any) proposed to be made thereon; and
  e.     
  
    to
  
  mark such levels, boundaries and line by placing marks and cutting trenches and
  
  where otherwise the survey cannot be completed and the levels taken and the
  
  boundaries and line marked, to cut down and clear away any part of any standing
  
  crop, fence or jungle:
  Provided that no act
  
  under clauses (a) to (e) in respect of land shall be conducted in the absence
  
  of the owner of the land or in the absence of any person authorised in writing
  
  by the owner:
  Provided further that
  
  the acts specified under the first proviso may be undertaken in the absence of
  
  the owner, if the owner has been afforded a reasonable opportunity to be
  
  present during the survey, by giving a notice of at least sixty days prior to
  
  such survey:
  Provided also that no
  
  person shall enter into any building or upon any enclosed court or garden
  
  attached to a dwelling-house (unless with the consent of the occupier thereof)
  
  without previously giving such occupier at least seven days’ notice in writing
  
  of his intention to do so.