Maryland Maryland-National Capital Park and Planning Commission Section 7-113

      The Commission may establish grades for all roads within the regional district, but in Montgomery County all road grades established shall be established within the tolerances set forth in the provisions of the Montgomery County Road Code. In Prince George's County, the authority to establish road grades shall be administered by the county department of public works and transportation. Until a grade has been established by the Commission, or the county department as appropriate, no grading of a permanent nature shall be made. Any unauthorized grading of a permanent nature by any State, municipal or county officer or employee or by any private person is declared to be a misdemeanor and punishable as such under the provisions of this article.