N.J. Stat. § 40:27-6.5
The county recording officer shall not accept for filing any subdivision plat unless it bears the certification of either approval or of review and exemption of the authorized county planning board officer or staff member indicating compliance with the provisions of this act and standards adopted pursuant thereto, in addition to all other requirements for filing a subdivision plat including compliance with the provisions of "The Map Filing Law" (P.L. 1960, c. 141). In the event the county planning board shall have waived its right to review, approve or disapprove a subdivision by failing to report to the municipal approval authority within the 30-day period or the mutually agreed upon 30-day extension period, as outlined in section 5 above, the subdivision shall be deemed to have county planning board approval, and at the request of the applicant, the secretary of the county planning board shall attest on the plat to the failure of the county planning board to report within the required time period, which shall be sufficient authorization for further action by the municipal planning board and acceptance thereof for filing by the county recording officer.
N.J.S. § 40:27-6.5