Such designation shall be made and a list of all such environmental zones shall be established by the commissioner of economic development no later than December thirty-first, two thousand four provided, however, that a qualified site shall only be deemed to be located in an environmental zone under subparagraph (B) of this paragraph if such site was the subject of a brownfield site cleanup agreement pursuant to section 27-1409 of the environmental conservation law that was entered into prior to September first, two thousand ten.
N.Y. Tax Law § 22