N.J. Stat. § 13:1D-105

1. Within 120 days of the effective date of this act, the Department of Environmental Protection shall establish classes or categories (hereinafter referred to as a "classification system") for all permits, as defined pursuant to section 1 of P.L.1991, c.421 (C.13:1D-101), issued by the department, authorizing an applicant to engage in a regulated activity. The classification system shall be based upon: the nature and complexity of an application and of the supportive documentation or other information required therefor; and the nature and magnitude of potential environmental or health impacts that could result from issuance of a permit approval. L.1991,c.423,s.1.