Roadway access hole drill and a method of microtrenching using the drill to open an access hole in the roadway

A method of cutting an access hole in a roadway comprising:

• providing a roadway access drill comprising a down-the-hole hammer drill having a drill bit and a jack-hammer that vibrates the drill bit, and a motor attached to the down-the-hole hammer drill that rotates the drill bit;
• placing a debris containment collar on a roadway surface over a buried utility, the debris containment collar having a debris containment collar body defining a hollow chamber sized to accept the drill bit;
• inserting the drill bit into the hollow chamber of the debris containment collar so that the debris containment collar body surrounds the drill bit;
• activating the motor and jack-hammer to provide a rotating and vibrating drill bit;
• and
• drilling an access hole in the roadway by lowering the rotating and vibrating drill bit into the roadway, wherein the debris containment collar prevents debris formed during the drilling from flying away.