N.Y. Public Authorities Law § 1209
2. Any purchase contract, including but not limited to contracts for the purchase of equipment, materials or supplies, the estimated cost of which exceeds the sum of ten thousand dollars, shall be made by the authority only upon public letting founded on sealed bids, except in a case where the authority, by resolution, declares the existence of an emergency or the existence of other circumstances making competitive bidding impracticable or inappropriate, except in no instance other than in circumstances such as described in paragraph (g) hereof, shall the authority declare that competitive bidding is inappropriate with respect to purchase contracts for omnibuses. In each instance when the authority declares competitive bidding inappropriate it shall state the reasons therefor. Competitive bidding may be declared inappropriate by the authority in instances (a) where the item to be purchased is available only from a single source; or (b) where professional engineering or architectural services are solicited; or (c) where only a single bid is received in response to an invitation for competitive bids; or (d) where the authority has chosen to standardize a component on the basis of compatibility or maintenance reliability; or (e) where the apparent low bidder is declared by the authority to be not qualified to perform the terms of the contract; or (f) where the authority wishes to experiment with or test a new product or technology or evaluate the service or reliability of a new source for a particular product or component; or (g) where the authority by a vote of two-thirds of its members then in office determines that its prior experience with a potential source or contractor has been such as to require, in the public interest, that such source or contractor not be considered eligible to bid and that after the elimination of said source or contractor from the bidding process there would effectively remain only a single source for the item to be purchased and the authority purchases the item from such source; or (h) where the authority by a two-thirds vote of its members determines, on the basis of its analysis of the competitive situation among potential sources for the item to be purchased, is such that it is in the public interest to encourage new sources of manufacture or supply by awarding a contract by negotiation and without competitive bidding. Notice of the invitation for such bidding shall state the time and place of the receipt and opening of bids and shall be published in the city record in five successive issues at least ten days preceding such opening. The authority may reject all such bids and readvertise for new bids if it shall deem it for the public interest so to do. If not, it shall award the contract to the lowest responsible bidder unless the authority, by unanimous vote, shall determine that it is for the public interest that a bid other than that of the lowest responsible bidder shall be accepted. * 3. A contract for the purchase of rapid transit cars or components of rapid transit cars in furtherance or implementation of a capital program plan approved pursuant to section twelve hundred sixty-nine-b of this article may also be awarded by the authority by negotiation without competitive bidding provided the following standards and procedures are complied with:
4. Notwithstanding the provisions of subdivision two of this section, a contract for the purchase of omnibuses or components of omnibuses in furtherance or implementation of a capital program plan approved pursuant to section twelve hundred sixty-nine-b of this article may also be awarded by the authority by negotiation without competitive bidding provided the following standards and procedures are complied with:
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