(a) An agreement to make and keep the lands accessible to the public unless the not-for-profit corporation can demonstrate to the commissioner's satisfaction that public accessibility would be detrimental to the lands or any natural resources associated therewith;

(b) An agreement not to sell, lease, exchange or donate the lands except to the state, a local government unit or another qualifying tax exempt non-profit organization for recreation and conservation purposes consistent with this title and approved by the commissioner; and

(c) An agreement to execute and convey to the state at no charge a conservation easement, pursuant to title three of article forty-nine of this chapter, over the lands to be acquired with state assistance payments. 12. Real property acquired, developed, improved, restored or rehabilitated by or through a municipality for park projects undertaken pursuant to this section with funds made available pursuant to this section shall not be sold, leased, exchanged, donated or otherwise disposed of or used for other than public park purposes without the express authority of an act of the legislature, which shall provide for the substitution of other lands of equal environmental value and fair market value and reasonably equivalent usefulness and location to those to be discontinued, sold or disposed of, and such other requirements as shall be approved by the commissioner. 13. Real property acquired by a not-for-profit organization with funds made available pursuant to this section for park projects undertaken pursuant to this section shall not be used in violation of an agreement entered into pursuant to this section, or sold, leased, exchanged, donated or otherwise disposed of without the express authority of an act of the legislature. 14. The commissioner shall adopt, prior to the acceptance of applications for park, historic preservation and heritage area projects, rules and regulations which shall include eligibility requirements, application procedures, office ranking and review processes, project approval guidelines and criteria, and funding distribution necessary for all state assistance payment programs established pursuant to this title. 15. Notwithstanding any other provision of law, no state assistance payment under this article may be applied, with respect to any project located within the area of New York county bounded by (a) the northern boundary of Fifty-ninth street and Fifty-ninth street extended; (b) the United States pierhead line; (c) the northern boundary of the area known as Battery Park City; and (d) eight hundred feet inland easterly from the United States bulkhead line:

(i) for, other than for recreational use or access inland of the existing bulkhead line, any roads, bridges, ramps or parking facilities or sewers or water mains;

(ii) for any site improvement, including sewers, or water mains, to support residential, industrial or commercial development;

(iii) to excavate, place fill or plantings in, or place any piling, platform or structure, including a floating structure, in the Hudson river; or

(iv) to plan, evaluate or study any project involving such excavation or placement as described in subparagraph (iii) of this paragraph; and provided further that no contract, or subcontract, with a public benefit corporation, public authority, or any other person or entity, or municipality other than the city of New York shall be entered into for any state assistance payments under this article with respect to any project, or portion thereof, located in the area described in this subdivision without the affirmative approval of the community board or boards wherein the project, or portion thereof, will be located. 16. Notwithstanding the provisions of this section, moneys received from the sale of bonds pursuant to the Clean Water/Clean Air Bond Act of 1996, and available for disbursements for projects developed pursuant to this section, shall also be available for state assistance payments to municipalities and not-for-profit corporations for the capital cost of projects described in subdivision nine of section 44-0119 of this chapter and subject to the review delineated in subdivision ten of section 44-0119 of this chapter. Such monies shall be subject to appropriation.