2006 New York Code - Protection Of Adjoining Property.

 
    § 27-481 Protection of adjoining property. (a) Curbs and bumpers. Open
  parking  lots shall be completely separated from adjoining land by curbs
  or bumpers of concrete, masonry, steel, heavy timber, or  other  similar
  and equally substantial materials, securely anchored so as to stop motor
  vehicles.  Curbs  and  bumpers  shall  be at least eight inches high and
  eight inches wide. The only openings permitted  in  required  curbs  and
  bumpers shall be for drainage and for motor vehicle entrances and exits,
  and  at pedestrian entrances. (b) Drainage.--Where the surface paving of
  an open parking lot is nonporous, such lot shall be drained as  required
  by  subdivisions (b), (c) or (d) of section P110.2 of reference standard
  RS-16, as applicable. An asphaltic concrete surface, not to  exceed  one
  and one-half inches in thickness after compaction, shall be considered a
  porous  surface  provided  such  surface  will  pass  an amount of water
  equivalent to one-half inch of  rainfall  per  hour  and  provided  such
  surface  is  underlaid  by  permeable  soil,  except  that  whenever  an
  off-street parking  facility  is  constructed  in  connection  with  the
  construction  of a new building, or whenever such parking facility falls
  within the definition of a substantial  horizontal  enlargement  as  set
  forth  in subdivision (a) of section P110.2 of reference standard RS-16,
  all storm water falling or coming to rest on such parking facility shall
  be disposed of as provided  in  section  P110.2  of  reference  standard
  RS-16.