(A)   The city shall be responsible for the development and maintenance of land and park infrastructure that has been dedicated to satisfy the requirements of this chapter, for its perpetual use by and availability to the public recreational purposes or open space. The City Council shall have the sole discretion and authority to determine the specific manner and extent of such public utilization and access, commensurate with the character and composition of such land and its natural resources.
   (B)   The developer shall not be responsible for its maintenance or any liability thereon, except for any ground water contamination or hazard that was caused or knowingly allowed to exist by said person.