Whenever review or approval of an application by the County Planning Board is required by Section 5 of P.L. 1968, c. 285 (N.J.S.A. 40:27-6.3), in the case of a subdivision, or Section 8 of P.L. 1968, c. 285 (N.J.S.A. 40:27-6.6), in the case of a site plan, the Planning Board or Board of Adjustment shall condition any approval that it grants upon timely receipt of a favorable report on the application by the County Planning Board or approval by the County Planning Board by its failure to report thereon within the required time. In the case of other variances, the County Planning Board shall be notified of any application which fronts on an existing or proposed county road, adjoins other county land or is within 200 feet of a municipal boundary.