Section 303. Standard test and storage of refined petroleum and kerosene oil

Refined petroleum or kerosene oil shall not  be  kept  on  sale  or
  stored  in  any such city, the fire test of which shall be less than one
  hundred and ten degrees Fahrenheit, determined by authorized  inspectors
  using  G.  Tagliabue's or other improved instruments; and the barrels or
  packages containing the same shall be legibly stamped or marked with the
  inspector's official stamp or  mark.  If  stored  above  the  cellar  or
  basement  of  any building and in barrels of not over forty-five gallons
  each, or in metallic vessels or tanks for the convenience of  retailing,
  the  quantity  so  stored  shall not exceed the contents of ten barrels,
  unless packed  in  hermetically  sealed  metallic  packages,  when  such
  quantity  shall  not exceed one hundred barrels. If stored in cellars or
  basements surrounded by walls of brick or stone, and at least  two  feet
  below  the level of the sidewalk, street or adjacent land, such quantity
  shall not exceed the contents of one hundred and fifty  barrels,  unless
  stored  in warehouses specially adapted for the purpose pursuant to this
  article. No more than five barrels thereof shall be kept  or  stored  in
  any building occupied wholly or in part as a dwelling.
    Not  more  than  ten  barrels  of  benzine or naphtha shall be kept or
  stored in any building, and not more than three barrels thereof  in  any
  building any part of which is occupied as a dwelling.
    This  and the preceding section shall not prevent the storage of crude
  or refined petroleum in wrought-iron tanks detached  from  any  building
  and   especially  adapted  for  that  purpose,  or  in  other  tanks  so
  constructed that the top is at least two feet below the  street  or  the
  adjoining  land  and  covered  with  at  least  one  foot  of earth, and
  appurtenant to or connected with a refinery, with the  approval  of  the
  inspectors of buildings, fire marshal or other proper authorities.