N.J. Stat. § 40:66A-20
Any incinerator or environmental services authority and any municipality within the district by ordinance of its governing body may enter into a contract or contracts providing for or relating to the collection, treatment and disposal of garbage and refuse originating in the district or in such municipality by means of the garbage disposal system, and the cost and expense of such collection, treatment and disposal. Such contract or contracts may provide for the payment to the incinerator or environmental services authority by such municipality annually or otherwise of such sum or sums of money, computed at fixed amounts or by a formula based on any factors or other matters described in subsection (b) of section 8 of this act or in any other manner, as said contract or contracts may provide, and the sum or sums so payable may include provision for all or any part or a share of the amounts necessary (1) to pay or provide for the expenses of operation and maintenance of the garbage disposal system, including without limitation insurance, extensions, betterments and replacements and the principal of and interest on any bonds, and (2) to provide for any deficits resulting from failure to receive sums payable to the incinerator or environmental services authority by such municipality, any other municipality, or any person, or from any other cause, and (3) to maintain such reserves or sinking funds for any of the foregoing as may be required by the terms of any contract of the incinerator or environmental services authority or as may be deemed necessary or desirable by the incinerator or environmental services authority. Any such contract may provide that the sum or sums so payable to the incinerator or environmental services authority shall be in lieu of all or any part of the service charges which would otherwise be charged and collected by the incinerator or environmental services authority with regard to persons or real property within such municipality. Such contract or contracts may also contain provisions as to the financing and payment of expenses to be incurred by the incinerator or environmental services authority and determined by it to be necessary for its purposes prior to the placing in operation of the garbage disposal system and may provide for the payment by such municipality to the incinerator or environmental services authority for application to such expenses or indebtedness therefor such sum or sums of money, not in the aggregate exceeding an amount stated or otherwise limited in said contract or contracts plus interest thereon, as said contract or contracts may provide and as the governing body of said municipality shall, by virtue of its authorization of and entry into said contract or contracts, determine to be necessary for the purposes of the incinerator or environmental services authority. Any such contract may be made with or without consideration and for a specified or an unlimited time and on any terms and conditions which may be approved by such municipality and which may be agreed to by the incinerator or environmental services authority in conformity with its contracts with the holders of any bonds, and shall be valid whether or not an appropriation with respect thereto is made by such municipality prior to authorization or execution thereof. Subject to any such contracts with the holders of bonds, such municipality is hereby authorized and directed to do and perform any and all acts or things necessary, convenient or desirable to carry out and perform every such contract and to provide for the payment or discharge of any obligation thereunder in the same manner as other obligations of such municipality and, in accordance with any such contract, to waive, modify, suspend or reduce the service charges which would otherwise be charged and collected by the incinerator or environmental services authority with regard to persons or real property within such municipality. Nothing in this section, however, shall prevent the incinerator or environmental services authority from collecting additional fees and charges from the owners or occupants of all parcels of real estate served by it within such municipality if for any reason such additional fees or charges shall be necessary in order for the incinerator or environmental services authority to pay all operating expenses, debt service and other payments required pursuant to contracts with bondholders; and notwithstanding such contracts with such municipalities, the incinerator or environmental services authority shall at all times have power and be obligated to collect sufficient additional fees and charges whenever necessary to pay all operating costs, debt service and all other payments required by contracts with bondholders.
N.J.S. § 40:66A-20