2. The bonds shall be authorized by resolution of the authority and shall bear such date or dates, mature at such time or times not exceeding forty years from their respective dates, bear interest at the best possible interest rate per annum as may be obtainable, be in such denominations, be in such form either coupon or registered, carry such registration privileges, be executed in such manner, be payable in lawful money of the United States of America, at such place or places and be subject to such terms of redemption, as such resolution or resolutions may provide. All bonds of the authority shall be sold at public or private sale as the authority shall determine. No bonds of the authority may be sold at private sale, however, unless such sale and the terms thereof have been approved by the county legislature. If such bonds are sold at public sale, such sale shall be upon sealed bids to the bidder who shall offer the lowest interest cost to the authority to be determined by the authority. Notice of any public sale shall be published at least once, not less than ten nor more than forty days before the date of sale, in a financial newspaper published and circulated in the city of New York and designated by the authority. The notice shall call for the receipt of sealed bids and shall fix the date, time and place of sale.
7. In the discretion of the authority, the bonds may be secured by a trust indenture by and between the authority and a corporate trustee, which may be any trust company or bank having the powers of a trust company in the state of New York. Such trust indenture may contain such provisions for protecting and enforcing the rights and remedies of the bondholders as may be reasonable and proper and not in violation of law, including covenants setting forth the duties of the authority in relation to the construction, maintenance, operation, repair and insurance of the properties, and the custody, safeguarding and application of all moneys, and may provide that the properties shall be constructed and paid for under the supervision and approval of consulting engineers. The authority may provide by such trust indenture for the payment of the proceeds of the bonds and the revenues of the properties to the trustee under such trust indenture or other depository, and for the method of disbursement thereof, with such safeguards and restrictions as it may determine. All expenses incurred in carrying out such trust indenture may be treated as a part of the cost of maintenance, operation and repairs of the properties. If the bonds shall be secured by a trust indenture the bondholders shall have no authority to appoint a separate trustee to represent them. Notwithstanding any other provisions of this title, any resolution or resolutions authorizing bonds or notes of the authority shall contain a covenant by the authority that it will at all times maintain rates, fees, rentals and/or other charges sufficient to pay, and that any contracts entered into by the authority for the receipt and treatment and/or disposal of solid wastes shall contain rates, fees, rentals or other charges sufficient to pay, the cost of operation and maintenance of the properties, the principal of and interest on any obligation issued pursuant to such resolution or resolutions as the same severally become due and payable, and to maintain any reserves or other funds required by the terms of such resolution or resolutions.