4. Pumpout facilities and dump stations required on the Hudson River. The commissioner shall require that marinas located on the navigable waters of the Hudson River shall provide pumpout facilities and dump stations for the transfer and disposal of sewage and gray water from marine holding tanks and portable toilets in accordance with the requirements contained in subdivision three of this section.

1. (a) The commissioner shall authorize a grant from funds made available in accordance with the clean vessel act of 1992 for the purchase and installation of pumpout facilities and dump stations at public marinas in accordance with the New York state clean vessel act plan.
2. (b) The commissioner shall authorize a grant from funds made available in accordance with the clean vessel act of 1992 for the purchase and installation of a pumpout facility and dump station at a commercial marina, provided the owner or operator of such commercial marina agrees to maintain the pumpout facility and dump station at no charge to the state and provides pumpout and dump station services to the public at a charge to be established by the commissioner in accordance with federal guidelines as required by the clean water act.
3. (c) Nothing in this subdivision shall restrict the use of any public funding source for the purchase and installation of a pumpout facility and dump station at any public or commercial marina.