A. Fasten any sign, card, poster, wire, rope or other material to or around or through any public tree or shrub, or its guard, in the city without a written permit of the city superintendent except in emergencies such as storms or accidents;

B. Deposit, place, store or maintain upon any public area of the city, any stone, brick, sand, concrete or other materials which may impede the free passage of water, air and fertilizer to the roots of any tree or shrub growing therein;

C. Break, injure, mutilate, kill or destroy any tree or shrub, or permit any fire to burn where such fire will injure any portion of any tree or shrub in any public area; no person shall permit any toxic chemical to seep, drain or be emptied on or about any public tree or shrub; no person shall knowingly permit electric wires to come in contact with any public trees or shrubs unless protected by approved methods; and no person shall attach any electrical insulation to any public tree or shall excavate any ditches, tunnels or trenches, or lay any drive within a radius of ten feet from any public tree or shrub without first obtaining permission from the city superintendent. During building operations the builder shall erect suitable protective barriers around public trees or shrubs apt to be injured.