Vt. Stat. tit. 30 § 7006
A company notified in accordance with section 7005 of this title shall, within 48 hours, exclusive of Saturdays, Sundays, and legal holidays, of the receipt of the notice, mark the approximate location of its underground utility facilities in the area of the proposed excavation activities; provided, however, if the company advises the person that the proposed excavation area is of such length or size that the company cannot reasonably mark all of the underground utility facilities within 48 hours, the person shall notify the company of the specific locations in which the excavation activities will first occur and the company shall mark facilities in those locations within 48 hours and the remaining facilities within a reasonable time thereafter. A company and an excavator may by agreement fix a later time for the company's marking of the facilities, provided the marking is made prior to excavation activities. For the purposes of this chapter, the approximate location of underground facilities shall be marked with stakes, paint, or other physical means as designated by the Commission.
30 V.S.A. § 7006