Not less than 2 calendar days nor more than 5 calendar days prior to the commencement of blasting operations, the owner or the owner's blasting contractor shall provide written notice of same to each council member and community board whose respective districts include the job site or property within 100 feet (30 480 mm) thereof, and the local fire company. Such notice shall contain the date or dates on which blasting operations are anticipated to take place and telephone numbers for the blasting contractor and the department to which complaints and inquiries about the blasting operations may be made. The owner or the owner's blasting contractor shall in addition forward a copy of the written notice to the owners of all buildings within 100 feet (30 480 mm) of the job site. Owners of such buildings shall post such notice at a conspicuous location within each such building in a manner prescribed by the department to ensure adequate visibility. If blasting operations continue for a period of more than 1 month, additional notice shall be given to owners of such buildings and posted by such owners on a monthly basis for any month in which blasting operations are to be conducted.