053-5 Wyo. Code R. § 5-3
(a) Foundation bases shall be of the appropriate size for well servicing units in operation on the location and shall be graded and drained. Location sites shall be made and maintained to a grade so that oil, substance from oil, water or other movable fluid will drain from working area. Such foundation bases shall be the responsibility of the well owner or operator.
(b) Footing shall be used as required by the existing conditions to provide a table base for the rig up, including mast erection, to support the mast during the most extreme load that will be encountered, and for pipe racking.
(c) If supplemental footing is used, it must be such that the safe bearing capacity of the soil on location is not exceeded and will carry the most extreme load. Supplemental footing is a foundation base other than cement or solid rock.
(d) Figures 1, 2, and 3, taken in part from API Standard 4E for Drilling and Well Servicing Structures, shall be used as a reference in preparing locations and repairing existing locations that are sub-standard.
053-5 Wyo. Code R. § 5-3