The county councils of Montgomery County and Prince George’s County shall approve, disapprove, or modify a Program. The county councils of Montgomery County and Prince George’s County shall seek the advice and recommendation of the Maryland–National Capital Park and Planning Commission in reviewing a Program. The county councils of Montgomery County and Prince George’s County may designate a water or sewer main for controlled or limited access for service to designated areas within the respective county. A modification to a Program by the county council of Montgomery County or Prince George’s County is not final until the modification is submitted to the Commission for written comment. The Commission has at least 30 days to comment on the modification.