A.
On file in the office of the City Engineer. The grades of all streets, alleys and sidewalks as established by the Common Council shall be kept on file in the office of the City Engineer.
B.
Recorded by the City Clerk. The grades of all streets, alleys and sidewalks shall be established and described and the adoption of such grades and all alterations shall be recorded by the City Clerk. No street, alley or sidewalk shall be worked until the grade thereof is established.
C.
Altering grades prohibited. All persons are prohibited from altering the grade of any street, alley, sidewalk or public ground, or any part thereof in the City by taking from or adding to the surface of such street, alley, sidewalk or public ground, and from digging, plowing or otherwise changing or disturbing the surface thereof unless authorized or instructed to do so by the City Engineer.
