OAR 690-240-0355: Monitoring Well Drilling Machines

(1) All monitoring well drilling machines being operated, other than under a landowner's permit, shall be plainly marked either with the bonded Monitoring Well Constructor's license number, the name of the bonded Monitoring Well Constructor, or the name of the well drilling business. The markings shall be permanently affixed on each side of the machine. Good quality paint or commercial decal numbers shall be used in placing the identification information on the drilling machine. In no case shall the constructor's license number, name, or business name, be inscribed with crayon, chalk, marking keel, pencil, or other temporary markings. (2) In all cases, the license number, name, or business name, of the bonded Monitoring Well Constructor shall be removed from the drilling machine immediately upon change of ownership or change of control of the drilling machine.