In connection with any construction, but prior to the issuance of demolition permits or building permits or start of construction, whichever is first applicable, heavy duty plastic fencing or other protective barriers acceptable to the municipal official charged with the administration and enforcement of this section, shall be placed around trees that are six inches and over in diameter and that are not to be removed. The protective barriers shall be placed at least five feet from the trunk of any tree and shall remain in place until all construction activity is terminated. This area shall be mulched with a minimum of four inch wood chips. No equipment, chemicals, soil deposit or construction materials shall be placed within any area so protected by barriers. Any landscaping activities subsequent to the removal of the barriers shall be accomplished with light machinery or hand labor.