N.J. Stat. Ann. § 48:13A-7.5

5. The board may direct any applicant to furnish proof that the rates or charges to be received for solid waste collection services do not exceed just and reasonable rates or charges. Should the board find, subsequent to the issuance of a certificate of public convenience and necessity, that the rates or charges received for solid waste collection services are excessive, then it may order the solid waste collector charging such excessive rates or charges to make an adjustment in the tariff or contract to a sum which shall result in just and reasonable rates or charges.