Where a blasting permit is for an excavation, no permit shall be issued unless the applicant has first obtained a valid building permit for the proposed construction. The City Engineer shall have the power at any time to cancel or suspend any blasting permit if such blasting operations are carried on thereunder in an incompetent, dangerous or unsafe manner, by giving verbal or written notice thereof to the holder of such permit. Such permit shall thereupon be immediately cancelled and the holder thereof shall immediately return the same to the City Engineer and no person whose blasting permit has been cancelled or suspended shall engage in or carry on blasting in the City. A holder of a blasting permit may carry on blasting only on Monday to Friday inclusive between the hours of 8:00 a.m. to 4:00 p.m. and only when atmospheric or other conditions permit a clear observation at a distance of not less than 100m (328 ft.) from the place where the blasting is to be carried on. Any person to whom a blasting permit has been issued shall comply with and observe the following regulations: (a) blasting shall be carried on only under the immediate supervision of a person possessing a _ valid Blasting Certificate issued by the Workers' Compensation Board and blasting permit issued by the City Engineer} no blasting shall be carried on in dangerous proximity to any person, building, or property, or the works of any underground public utility liable to suffer injury from blasting unless and until precautions have been takem to prevent injury to any person, building, property or utility; a flagman with red flags or a minimum size of 45cm by 45cm (18 in. by 18 in.), or other Workers' Compensation Board approved signalling devices, shall be posted at every possible point where cars or pedestrians might enter the blasting area -~ when the blasting is completed, the normal vehicular and pedestrian traffic shall be restored as quickly as possible; and no blast shall be discharged by any person unless and until the material to be blasted shall first have been adequately covered with a suitable blasting mat or some material or device sufficient to provide precautions for adequately safeguarding life and property. ll. Prior to any charges being set off or discharged adjacent to any street where persons or vehicles may be, the person in charge shali give effective warning, in accordance with the current Workers' Compensation Board regulations, and sufficient time shall be given to enable persons oF vehicles to move to a safe distance from such blasting. When the blasting has taken place the person in charge shall inspect the area in the vicinity of the blasting and ensure that it is free of unexploded charges or explosive materials. When blasting is being carried on, the person in charge shall provide at least two assistants and as many additional assistants as circumstances may require to warn all occupants of buf{idings in the vicinity and to take all reasonable precautions to adequately safeguard. such occupants and also to prevent all persons and vehicles from approaching within the blasting area. osq, STEM | PAGE 25