Section 280-S. Increase and improvement of facilities

Whenever  the
  governing body shall determine it necessary to acquire additional  lands
  or  interests  in  lands  or  to  acquire or to construct dunes, bluffs,
  bulkheads, dikes, groins, jetties, fills or other  works  including  all
  necessary  facilities and equipment appurtenant thereto; or whenever the
  governing body shall determine it necessary for the  proper  maintenance
  and  service  of such facilities to increase, improve or reconstruct the
  facilities thereof, including the acquisition of  additional  lands,  or
  interests  in  land  therefor,  it may cause the same to be accomplished
  without further authorization, provided, however, that if it is proposed
  to finance any part of the cost thereof by  the  issuance  and  sale  of
  capital  notes or serial bonds, such improvement shall not be undertaken
  unless authorized by  proceedings  taken  in  the  same  manner  as  the
  proceedings taken for the original establishment of the district, except
  that  the  sole  determination  which  the  governing body shall make is
  whether such improvement is in the public  interest,  and  if  zones  of
  assessment  have  been  established,  said  governing body shall further
  determine the allocation of the cost thereof as between such zones.