The siting of a structure or equipment required for groundwater remedial action approved by the New Jersey Department of Environmental Protection pursuant to P.L. 1977, c. 74 (N.J.S.A. 58:10A-1 et seq.), is essential to the continuation of an existing structure or use of a use or to development of a property. As such, a groundwater remedial action, including the structures and equipment required for the remedial action, shall be an accessory use or structure, shall be a permitted use in all zoning districts, and shall not require a use variance. A zoning permit is required for groundwater remediation facilities. Should the Zoning Officer determine that a "c" or bulk variance is required, the Zoning Board or Planning Board shall hear the application and, if required, establish reasonable terms and conditions for issuance of the variance.