N.Y.C. Admin. Code § 4-114: § 4-114 Boundary disputes; power to settle.

The board of estimate shall have power, by three-fourths vote, to settle and adjust by mutual conveyances or otherwise, and upon such terms and conditions as may seem to them proper, disputes existing between the city and private owners of real property, in respect to boundary lines, and to release such interest of the city in real property as the corporation counsel shall certify in writing to be mere clouds upon titles of private owners, in such manner and upon such terms and conditions as in its judgment shall seem proper.