Minimum Surface Casing Requirements
Minimum surface casing requirements for protecting fresh and usable water and to meet alternate #1 on Intent to Drill cards, Form C-1
S=Section, T=Township, R=Range
In 17, 18 and 19E, when total depth is 1500 feet or greater and Alternate I is used, set a minimum of 150 feet surface casing. In 17, 18 and 19E, when total depth is less than 1500 feet, completion will be under Alternate II rules, Appendix B, Area 2, Eastern Surface Casing order. All wells drilled in 20 and 21E shall be completed under Alternate II rules, Appendix B, Area 1, Eastern Surface Casing order. In all cases, set surface casing through all unconsolidated material plus 20 or more feet into the underlying formation.