New Jersey Statutes Title 13. Conservation and Development Parks and Reservations 13 § 1E-44

a. “Sludge” means the solids, precipitates and liquids, other than effluent, which are produced as a result of the storage or treatment of domestic or industrial sewage;  provided, however, that any waste material which is disposed of in accordance with the provisions of a special permit issued by the Administrator of the U.S. Environmental Protection Agency pursuant to the provisions of section 102 of the “Marine Protection, Research and Sanctuaries Act of 1972” (P.L. 92-532, 33 U.S.C. s. 1412), as implemented by 40 CFR 220.3 shall not be considered sludge for the purposes of this supplementary act.

b. “Processing of sludge” means the use of sludge for the production of energy, fertilizer or other useful materials.

c. “Land disposal” means the disposal of sludge at a sanitary landfill or the application of wet or dry sludge on agricultural, park or institutional lands in a manner which conforms to the Statewide solid waste management plan and the solid waste management plan for the district wherein such disposal or application occurs.

d. “Effluent” means liquids which are treated in, and discharged by, public sewage treatment plants.