9-2-13: FIRING REGULATIONS:
   A.   General:
      1.   Prior to the firing of a shot, all persons in the danger area shall be warned of the blast and ordered to a safe distance from the area. The blast shall not be fired until it is absolutely certain that every person has retreated to a safe distance and that no one remains on a dangerous location.
      2.   All blasting operations shall use blasting signals specified by the state or, in the absence of state requirements, the following signals shall be used:
         a.   Warning signal: a one minute series of long whistles five (5) minutes prior to the blast signal;
         b.   Blast signal: a series of short whistles one minute prior to the shot;
         c.   All clear signal: a prolonged whistle following the inspection of the blast area.
Signals for blasting shall be conspicuously posted. Competent flaggers shall be posted at all access points to danger areas such as roads, walkways, railroads and water routes.
   B.   Marine Firing:
      1.   Prior to firing, the drill boat or vessel on the work shall be moved a safe distance from the blasting range or area. Prior to, and while the drill boat or vessel is being moved from the blasting area, a series of short signals by horn or whistle, similar to the usual navigation warning signals, shall be given. On the completion of the firing of the blast, a long whistle or horn signal shall be given.
      2.   No blast shall be fired while any vessel under way is closer than one thousand five hundred feet (1,500') to the blasting area and those on board vessels or craft moored or anchored within one thousand five hundred feet (1,500') must be notified before a blast is fired.
      3.   No blast shall be fired closer than two hundred fifty feet (250') to another boat or vessel containing an explosive magazine. Persons engaged in drilling operations on another drill boat within five hundred feet (500') shall leave the drill frames for cover in the event that any complete holes in their vicinity have been loaded.
      4.   No blast shall be fired while any swimming or diving operations are in progress in the vicinity of the blasting area. If such operations are in progress, signals and arrangements shall be agreed upon to assure that no blast will be fired while a diver or other person is in the water. (Ord. A-348, 6-4-1979)