A governmental entity shall be exposed to liability for its negligent acts or omissions causing property damage, bodily injury or death in the following instances:

(1) In its ownership, maintenance or use of any motor vehicle, special mobile equipment, trailer, aircraft or other machinery or equipment, whether mobile or stationary.

(2) In the construction, operation or maintenance of any public building or the appurtenances thereto, except as to historic sites or buildings, structures, facilities or equipment designed for use primarily by the public in connection with public outdoor recreation.

(3) In the sudden and accidental discharge, dispersal, release or escape of smoke, vapors, soot, fumes, acids, alkalines and toxic chemicals, liquids or gases, waste materials or other irritants, contaminants or pollutants into or upon land, the atmosphere or any watercourse or body of water.

62 Del. Laws, c. 124, § ?2;