Colorado Revised Statutes Title 29. Government Local § 29-8-133. Conversion costs and service connection

(1) The public utility performing the conversion shall, at the expense of the property owner, convert to underground all electric and communication service facilities located upon any lot or parcel of land within the improvement district and not within the easement for distribution. This shall include the digging and the back filling of a trench upon such lot or parcel, unless the owner executes a written objection thereto and files the same with the clerk of the governing body not later than the date set for hearing objections to the improvement district as provided by law. Failure to file such written objection shall be taken as a consent and grant of easement to the public utility and shall be construed as express authority to the public utility and their respective officers, agents, and employees to enter upon such lot or parcel for such purpose, and, through failure to object, any right of protest or objection with respect to the doing of such work shall be waived. If an owner does file such written objection, he shall then be responsible for providing a trench which is in accordance with applicable rules, regulations, or tariffs from the owner's service entrance to a point designated by the public utility and for back filling a trench following installation of the underground service by the public utility involved.

(2) In any event, the cost of any work done by the public utility shall be included in the assessment to be levied upon such lot or parcel. Should a written objection be filed as provided in subsection (1) of this section, the owner involved shall be obligated for and the public utility involved shall be entitled to payment for the actual cost for such work accomplished upon the owner's property by the public utility;  such amount shall be less than the cost if the public utility had performed the trenching and back filling.

(3) The owner shall, at his expense, make all necessary changes in the service entrance equipment to accept underground service.