Section 15-123. Limited mutual aid agreement with city of Mount Vernon

a.
  Subject to the limitations contained in subdivision b of  this  section,
  the  commissioner  is  hereby  empowered  to  enter  into  a  mutual aid
  agreement with the fire commissioner of the city of Mount  Vernon.  Such
  agreement  shall  authorize  the  dispatching of fire fighting equipment
  from the city of New York to the city of Mount Vernon when so  requested
  by the commissioner of the city of Mount Vernon.
    b.  The  scope  of any agreement entered into pursuant to this section
  shall be limited in that fire fighting  equipment  dispatched  from  the
  city  of  New  York  shall  only  respond  to fires or other emergencies
  occurring in that part of the city of Mount Vernon  which  contains  the
  bulk  oil storage installations located on the boundary line of the city
  of New York and within the confines of  the  city  of  Mount  Vernon  on
  either side of Eastchester creek.