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
Wells deeper than 1500 feet using Alternate I completion set a minimum surface casing of 500 feet in R.8E, 9E and 10E; 300 feet in R.11E; 225 feet in R.12E and 13E. Sec. 8-T.35S-R.10E set a minimum of 500 feet or to an elevation less than 600 feet mean sea level. All other wells shall use Alternate II rules, Appendix B, Area 3, Eastern Surface Casing order. In all cases, set surface casing through all unconsolidated material plus 20 or more feet into the underlying formation.